Distributed energy system heat storage technology

Abstract

The invention discloses a distributed energy system heat storage technology. A container, a heat conduction oil inlet and outlet pipe, a heat storage rod, a heat flow pipe evaporation section, a heat flow pipe flow collecting and distributing device, a heat flow pipe cooling condensation section, an efficient heat preservation material and a separated heat flow pipe are included. The separated heat flow pipes and the heat absorption rods are regularly mixed and inserted; the heat-conducting oil inlet pipe is connected with the right lower side of the container body, and the heat-conducting oil outlet pipe is connected with the left upper side of the container body; the separated heat flow pipe comprises a heat flow pipe evaporation section and a cooling condensation section, the heat flow pipe evaporation section is connected with the heat flow pipe cooling condensation section through a heat flow pipe flow dividing device on the lower portion, and the heat flow pipe evaporation section is connected with the heat flow pipe condensation section through a heat flow pipe flow collecting device on the upper portion; the outer surface of the container body is wrapped by a heat-insulating layer made of efficient heat-insulating materials. The problems that a traditional renewable energy supply system is difficult to design, high in cost, low in efficiency and small in use site are effectively solved.

Description

Technical Field

[0001] The present invention relates to the application field of solar thermal technology, and in particular to a distributed energy system heat storage technology. Background Art

[0002] The current method of supplying renewable energy is to build a renewable energy station in a site that meets the requirements. The station uses local wind energy, water energy or other forms of energy to provide ideal energy such as solar thermal energy. However, this renewable energy station has the following problems: (1) end users have different requirements for the form and quality of terminal heat; (2) efficient heat storage methods are required between sites capable of building renewable energy and places using the energy; (3) wind, light, water, electricity, etc. as a single energy supply are easily affected and restricted by the environment. As a renewable energy supply unit, the stability of the energy source is not enough. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a distributed energy system heat storage technology, which separates the energy generation system from the storage and use system, and effectively solves the problems of difficult design, high cost, low efficiency and limited use site of traditional renewable energy supply system.

[0004] In order to solve the above technical problems, the present invention provides a distributed energy system heat storage technology, including: a container body, a heat flow tube condensing section, a heat transfer oil inlet pipe, a heat transfer oil outlet pipe, a heat flow tube shunt device, a heat flow tube collecting device, a heat flow tube evaporating section, a heat storage rod, a separate heat pipe and a high-efficiency thermal insulation material; the separate heat flow tube and the heat absorption rod are mixed and inserted regularly; the heat transfer oil inlet pipe is connected to the lower right side of the container body, and the heat transfer oil outlet pipe is connected to the upper left side of the container body; the separate heat flow tube includes a heat flow tube evaporating section and a cooling condensing section, at the bottom, the heat flow tube evaporating section and the heat flow tube cooling condensing section are connected through the heat flow tube shunt device, and at the top, the heat flow tube evaporating section and the heat flow tube condensing section are connected through the heat flow tube collecting device; the outer surface of the container body is wrapped with a high-efficiency thermal insulation material as an insulation layer.

[0005] Preferably, the heat storage rods adopt a regular hexagonal structure, and the distance between the heat storage rods is 0.1-10 cm.

[0006] Preferably, the diameter of the inscribed circle of the heat storage rod is in the range of 1-50 cm.

[0007] Preferably, an evaporation section valve is installed at the inlet of the evaporation section of the heat flow tube of the separate heat flow tube, and the valve is closed during heat storage.

[0008] Preferably, the heat flow pipe diverter device is equipped with a drain valve, and when the medium in the heat flow pipe does not reach the boiling point, the medium in the heat flow pipe diverter will be discharged through the drain valve.

[0009] The beneficial effects of the present invention are as follows: (1) The heat storage density per unit volume is high, which can be easily transported, and the unit heat energy transportation cost is very low; (2) The heat energy supply is stable, and it is not discontinuous or unstable due to weather during use; (3) It is safer, and leakage will not have a major impact on environmental hygiene; (4) The production site is free and the method is not limited. The same system can be compatible with solar, wind, water, biomass and electricity during off-peak hours, and can store heat through multi-energy complementation; (5) The terminal user can determine the terminal heat form and quality by the user, which is flexible and convenient to use and low cost; (6) The control difficulty is low and the heat release is stable; (7) The medium inside the heat storage rod can be flexibly selected according to user needs, and the corresponding medium can be filled according to user needs to meet user needs. For example, when the user needs high-temperature steam, molten salt can be filled to generate high-temperature steam using the phase change heat of the molten salt. When the user needs hot water, concrete can be filled into the heat storage rod to generate hot water for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a simplified diagram of the internal layout of the container body of the present invention.

[0011] Figure 2 This is a working principle diagram of the heat flow tube of the container box of the present invention.

[0012] Figure 3 It is a top view of the container body of the present invention.

[0013] Figure 4 It is a structural diagram of the heat flow tube of the present invention.

[0014] Figure 5 The figure is a schematic diagram of the inlet pipe of the heat pipe splitter of the present invention.

[0015] Figure 6 It is a front cross-sectional view of the container body of the present invention.

[0016] Among them, 1. evaporation section of heat flow tube; 2. heat storage rod; 3. heat flow tube diversion device; 4. heat flow tube collecting device; 5. heat transfer oil inlet pipe; 6. heat transfer oil outlet pipe; 7. condensation section of heat flow tube; 8. inlet pipe of heat flow tube diversion device; 9. valve of evaporation section of heat flow tube; 10. valve of condensation section of heat flow tube; 11. container body; 12. heat flow tube; 13. high-efficiency thermal insulation material. DETAILED DESCRIPTION

[0017] like Figure 1-6As shown, a distributed energy system heat storage technology includes: a container body, a heat flow tube condensing section, a heat transfer oil inlet pipe, a heat transfer oil outlet pipe, a heat flow tube shunt device, a heat flow tube collecting device, a heat flow tube evaporating section, a heat storage rod, a separate heat pipe and a high-efficiency thermal insulation material; the separate heat flow tube and the heat absorption rod are mixed and inserted in a regular pattern; the heat transfer oil inlet pipe is connected to the lower right side of the container body, and the heat transfer oil outlet pipe is connected to the upper left side of the container body; the separate heat flow tube includes a heat flow tube evaporating section and a cooling condensing section, at the bottom, the heat flow tube evaporating section and the heat flow tube cooling condensing section are connected through the heat flow tube shunt device, and at the top, the heat flow tube evaporating section and the heat flow tube condensing section are connected through the heat flow tube collecting device; the outer surface of the container body is wrapped with a high-efficiency thermal insulation material as an insulation layer.

[0018] In this example, the heat flow tube has a diameter of 5 cm and a height of 100 cm, the inscribed circle diameter of the regular hexagonal heat storage rod is 7 cm and the height is 130 cm, the spacing between the heat storage rods is 0.3 cm, the container size is 1.6 m × 1.6 m × 1.6 m, and the heat transfer oil pipeline has a diameter of 3 cm.

[0019] During the heat storage process, the heat transfer oil is input from the two inlets on the lower right side through the high-temperature pump, flows through the gap between the heat storage rods, and then the heat is transferred to the inside of the heat storage rod. At this time, the heat transfer oil will flow out from the upper left outlet, and the heat storage process is completed. In this process, the valve for the heat flow tube medium to enter the heat flow tube is closed, so that the medium in the heat flow tube is completely evaporated. Then, when the heat flow tube is in a dry burning state, the drain valve is opened when necessary to discharge the medium in the heat flow tube diversion device in time, which can effectively avoid excessive pressure in the heat flow tube. At the same time, a pressure gauge is added to the system to timely detect the size of the air pressure in the heat flow tube. When it exceeds the threshold, the pressure is released in time to ensure safety.

[0020] During the heat release process, the heat flow tube is first evacuated, and then the valves at the inlet and outlet of the evaporation section of the heat flow tube are opened, and the medium enters the heat flow tube. The medium vapor generated in the heat flow tube enters the condensation section, and after being cooled by water, the condensed liquid enters the heat flow tube diversion device, and the heat release process is completed. The water in the condensation section of the heat flow tube is heated and turned into hot water or steam for users to use. There is an operation terminal on the user side to operate the heat release process, allowing the medium to slowly flow into the heat flow tube to prevent the equipment from being damaged due to excessive cooling.

[0021] The present invention separates the production system from the storage and use system, and can be modularly composed to transport heat. The construction site of the thermal energy production system can be freely selected, and the energy system can be built in places with conditions to produce heat storage modules. We can use idle land near rural areas, urban expressways, and highway entrances and exits, and we can also consume excess solar, wind, hydropower, and electricity during off-peak hours.

[0022] The present invention can be transported in modular form, and can be transported to a user-specified location and assembled according to user needs. The transported modules can be used to allow the solar energy system to target different terminal markets, allowing units without sites to utilize solar energy.

[0023] The heat storage technology of the distributed energy system of the present invention can provide standardized heat storage modules in a unified manner, regardless of the form (water, steam) and temperature of the user's terminal heat energy, by ensuring the setting of the initial temperature, setting different heat transfer oil flow rates, and providing hot water or steam to meet the needs of users. In the present invention, users only need to pay according to the size and temperature of the heat storage module, without installing a heat meter and a remote reading system, and the manufacturer only needs to ensure the temperature and quantity of the heat storage module.

Claims

1. A distributed energy system heat storage technology, characterized in that: include: A container body (1), a heat flow tube condensing section (2), a heat transfer oil inlet pipe (3), a heat transfer oil outlet pipe (4), a heat flow tube flow dividing device (5), a heat flow tube flow collecting device (6), a heat flow tube evaporating section (7), a heat storage rod (11), a separate heat pipe (12) and a high-efficiency thermal insulation material (13); a plurality of separate heat flow tubes (12) and a plurality of heat storage rods (11) are mixed and inserted in a regular manner; the heat transfer oil inlet pipe (3) is connected to the lower right side of the container body (11), and the heat transfer oil outlet pipe (4) is connected to the lower right side of the container body (11). The tube (4) is connected to the upper left side of the container body (11); the separated heat flow tube (13) comprises a heat pipe evaporation section (2) and a heat flow tube condensation section (7); at the bottom, the heat flow tube evaporation section (2) and the heat flow tube condensation section (7) are connected through a heat flow tube flow dividing device (5); at the top, the heat flow tube evaporation section (2) and the heat flow tube condensation section (7) are connected through a heat flow tube flow collecting device (6); the outer surface of the container body (1) is wrapped with a high-efficiency thermal insulation material (13).

2. A distributed energy system heat storage technology as claimed in claim 1, characterized in that: The heat storage rods (1) adopt a regular hexagonal structure, and the distance between the heat storage rods (1) is 0.1-1 cm.

3. A distributed energy system heat storage technology as claimed in claim 1, characterized in that: The diameter of the inscribed circle of the heat storage rod (1) ranges from 1 to 50 cm.

4. A distributed energy system heat storage technology as claimed in claim 1, characterized in that: A valve (9) is installed at the inlet of the evaporation section (2) of the heat flow tube of the separated heat flow tube (13), and the valve (9) of this section is closed during heat storage.

5. A distributed energy system heat storage technology as claimed in claim 1, characterized in that: The heat flow pipe shunt device (5) is equipped with a drain valve. When the medium in the heat flow pipe (13) does not reach the boiling point, the medium in the heat flow pipe shunt device (5) will be discharged through the drain valve.

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