Thermochemical thermal storage vehicle, thermal storage vehicle heat storage system, heat recovery energy storage power generation system

Through the design of the thermal chemical heat storage truck, heat is stored and released when needed by using the endothermic and exothermic reaction of the reaction medium, which solves the problem of mismatch between heat energy supply and demand and achieves efficient matching and storage of heat.

CN114838610BActive Publication Date: 2025-05-06INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202210550515.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-05-18
Publication Date
2025-05-06
Estimated Expiration
2042-05-18

AI Technical Summary

Technical Problem

The existing mobile thermal storage technology is difficult to effectively solve the problem of mismatch between heat supply and demand, and there is a lack of a tool that can store energy and move it.

Method used

A thermal chemical heat storage vehicle is provided, including a vehicle body, a reaction cylinder and a heat transfer pipeline. The reaction medium in the reaction cylinder stores and releases heat through endothermic reactions and exothermic reactions.

Benefits of technology

The matching of heat supply and demand in terms of time, location and intensity between heat supply and demand has been achieved, which has alleviated the tension between energy supply and demand, and is in line with the national policy of clean heating.

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Abstract

The present invention provides a thermochemical heat storage vehicle, a heat storage vehicle heat storage system, and a heat recovery energy storage power generation system, which belong to the field of energy storage technology. The thermochemical heat storage vehicle includes: a vehicle body with drive wheels; a reaction cylinder; a heat transfer pipeline; the heat transfer pipeline has at least a first interface and a second interface; in the thermochemical heat storage vehicle of the present invention, the reaction medium in the reaction cylinder absorbs the waste heat of the factory, and an endothermic reaction occurs in the reaction chamber, thereby storing the heat through the thermochemical reaction, and after reaching the specified position, an exothermic reaction occurs to release the heat, which is applied to the required scene, thereby realizing heat storage and release; the heat storage vehicle can achieve matching between heat supply and demand in rooms and locations, alleviate the tension between energy supply and demand to a certain extent, and comply with the national clean heating policy.
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Description

Technical Field

[0001] The present invention relates to the technical field of energy storage, and in particular to a thermochemical heat storage vehicle, a heat storage system for a heat storage vehicle, and a heat recovery energy storage power generation system. Background Art

[0002] Thermal storage technology has broad application prospects in the fields of electricity peak shaving, grid load balancing, and waste heat recovery. Mobile thermal storage technology is gaining increasing attention because it can effectively resolve the contradiction between thermal energy supply and demand. Mobile thermal storage technology can collect and store waste heat from heat sources (such as industrial wastewater, steam, flue gas, etc.) in thermal storage materials, and transport it to nearby heat users by trucks to provide hot water, heating, and even thermal power generation. It can alleviate the tension between energy supply and demand in my country to a certain extent, and is in line with the national policy of clean heating.

[0003] Mobile thermal storage technology can store energy in a thermal storage medium at the heat source, and ultimately achieve stable heat output at the heat user by matching the heat supply and demand sides in terms of time, location and intensity.

[0004] Therefore, mobile heat storage technology requires a tool that can store energy and is movable. The present invention provides a thermochemical heat storage vehicle. Summary of the invention

[0005] Therefore, the present invention provides a thermochemical heat storage vehicle.

[0006] The invention also provides a heat storage system for a heat storage vehicle.

[0007] The present invention also provides a heat recovery energy storage power generation system.

[0008] In order to solve the above technical problems, the present invention provides a thermochemical heat storage vehicle, comprising:

[0009] a vehicle body having drive wheels;

[0010] A reaction cylinder is arranged on the vehicle body; the reaction cylinder has a reaction cavity; a reaction medium is arranged in the reaction cavity; the reaction medium is suitable for endothermic reaction and exothermic reaction;

[0011] The heat transfer pipeline is arranged in the reaction chamber; the outer surface of the heat transfer pipeline is suitable for contacting with the reaction medium to complete the heat transfer; the heat transfer pipeline has a containing cavity, and the heat transfer medium is arranged in the containing cavity; the heat transfer pipeline has at least a first interface and a second interface.

[0012] As a preferred solution, it also includes:

[0013] The gas storage bin is arranged outside the reaction cylinder; the gas storage bin is connected to the reaction chamber through a regulating valve.

[0014] As a preferred solution, the gas storage bin is an annular structure, which is sleeved on the outer surface of the reaction cylinder;

[0015] The gas storage bin is provided with a plurality of first gas outlets spaced apart in the circumferential direction, the reaction cylinder is provided with a plurality of second gas outlets correspondingly connected to the first gas outlets; and a regulating valve is provided on the first gas outlet.

[0016] As a preferred solution, the reaction cylinder is rotatably connected to the vehicle body via a rotary bearing;

[0017] The reaction cylinder is connected to the outer ring of the rotating bearing; the inner ring of the rotating bearing is connected to the vehicle body through a bearing support; and the heat transfer pipeline is fixedly connected to the inner ring of the rotating bearing.

[0018] As a preferred solution, it also includes:

[0019] A driving motor is fixedly arranged on the vehicle body; a driving end of the driving motor is fixedly connected to the reaction cylinder.

[0020] As a preferred embodiment, the reaction medium is one or more of calcium carbonate, calcium oxide, calcium hydroxide, magnesium carbonate, magnesium oxide, magnesium hydroxide, lead carbonate, barium oxide, cobalt oxide and aluminum oxide;

[0021] The heat transfer medium is one or more of potassium nitrate, calcium nitrate, sodium nitrate, sodium nitrite, lithium nitrate, chloride salt, fluoride salt, heat transfer oil, compressed gas, liquid metal and water.

[0022] The present invention also provides a thermal storage vehicle heat storage system, characterized in that it comprises any of the above-mentioned thermochemical thermal storage vehicles; and further comprises:

[0023] Industrial waste heat exchanger, the high temperature side is suitable for connecting with the waste heat pipeline of the factory, and the low temperature side is connected with the heat transfer pipeline of the thermochemical heat storage vehicle.

[0024] The present invention also provides a regenerative energy storage power generation system, characterized in that it comprises the thermochemical heat storage vehicle described in any one of the above items; and further comprises:

[0025] The energy-release expansion unit is drivingly connected to the power generation unit;

[0026] A high-temperature heat exchanger, wherein the high-temperature side of the high-temperature heat exchanger is connected to the heat transfer pipeline of the thermochemical heat storage vehicle, and the low-temperature side is connected to the energy release expansion unit.

[0027] As a preferred solution, it also includes:

[0028] The energy-releasing compressor unit is drivingly connected to the power generation unit;

[0029] Refrigeration circuit, generating cold energy;

[0030] A low-temperature heat exchanger, wherein the low-temperature side of the low-temperature heat exchanger is connected to the refrigeration circuit, and the high-temperature side of the low-temperature heat exchanger is connected to the energy-releasing compressor unit.

[0031] As a preferred solution, the refrigeration circuit includes: a low-temperature liquid cold storage tank, a normal-temperature liquid storage tank, a cold storage drive pump, a cold energy absorption heat exchanger and a refrigeration component;

[0032] The liquid cold storage medium is driven to flow out of the normal temperature liquid storage tank, flow into the cold energy absorption heat exchanger to absorb the cold energy generated by the refrigeration component to a low temperature state, and then enter the low temperature liquid cold storage tank along the pipeline for storage.

[0033] The technical solution of the present invention has the following advantages:

[0034] 1. The thermochemical heat storage vehicle provided by the present invention comprises: a vehicle body, a reaction tube and a heat transfer pipeline; the reaction medium in the reaction tube absorbs the waste heat of the factory, and an endothermic reaction occurs in the reaction chamber, thereby storing the heat through the thermochemical reaction, and after reaching the designated position, an exothermic reaction occurs to release the heat, which is applied to the required scene, thereby realizing heat storage and release; the heat storage vehicle can achieve the matching of heat supply and demand in the room and location, alleviate the tension between energy supply and demand to a certain extent, and comply with the national clean heating policy.

[0035] 2. The thermochemical heat storage vehicle provided by the present invention also includes: a gas storage bin; the gas storage bin is used to store the gas generated by the reaction medium in the reaction chamber during the endothermic reaction; and regulating valves are arranged in the gas storage bin and the reaction chamber to control the occurrence and stopping of the reaction.

[0036] 3. In the thermochemical heat storage vehicle provided by the present invention, the reaction tube and the vehicle body are rotatably connected, which can make the reaction medium react more fully, and at the same time, can also achieve sufficient heat exchange between the reaction medium in the reaction tube and the heat transfer medium in the heat transfer pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a structural schematic diagram of the thermochemical heat storage vehicle of the present invention.

[0039] Figure 2 It is a structural schematic diagram of the heat storage system of the heat storage vehicle of the present invention.

[0040] Figure 3 It is a structural schematic diagram of the heat recovery energy storage power generation system of the present invention.

[0041] Description of reference numerals:

[0042] 1. Low temperature heat exchanger; 2. Energy release compressor unit; 3. Intermediate heat exchanger; 4. High temperature heat exchanger; 5. Energy release expansion unit; 6. Power generation unit; 7. Low temperature liquid cold storage tank; 8. Cold release drive pump; 9. Dissipation heat exchanger; 10. Normal temperature liquid storage tank; 11. Cold storage drive pump; 12. Cold energy absorption heat exchanger; 13. Drive unit; 14. First stage refrigeration expansion unit; 15. Second stage refrigeration expansion unit; 16. First stage refrigeration compressor unit; 17. Second stage refrigeration compressor unit; 18. First stage refrigeration Cooler; 19. Second stage cooler; 20. Third stage cooler; 21. Fourth stage cooler; 22. Control valve; 23. Filter; 24. Heat release fluid driving device; 25. Thermochemical heat storage vehicle; 26. Heat storage fluid driving device; 27. Industrial waste heat absorption heat exchanger; 28. Heat absorption fluid driving device; 29. ​​Vehicle body; 30. Reaction cylinder; 31. Heat transfer pipeline; 32. Gas storage bin; 33. Regulating valve; 34. Bearing support; 35. Driving motor; 36. First interface; 37. Second interface. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Example 1

[0048] The present embodiment provides a thermochemical heat storage vehicle 25, comprising a vehicle body 29, a reaction cylinder 30 and a heat transfer pipeline 31; the vehicle body 29 is provided with a plurality of driving wheels, which are spaced apart on both sides of the vehicle body 29; a reaction cylinder 30 is arranged on the vehicle body 29, and the reaction cylinder 30 has a reaction cavity, in which a reaction medium is placed, and the reaction medium can undergo endothermic reaction and exothermic reaction; a heat transfer pipeline 31 is arranged in the reaction cavity, and the outer surface of the heat transfer pipeline 31 is suitable for contacting with the reaction medium to complete heat transfer; a containing cavity is arranged in the heat transfer pipeline 31, and a heat transfer medium for heat transfer is arranged in the containing cavity; at least a first interface 36 and a second interface 37 for the heat transfer medium to flow in and out are arranged on the heat transfer pipeline 31.

[0049] The reaction medium in the reaction tube 30 absorbs the waste heat from the factory, and an endothermic reaction occurs in the reaction chamber, thereby storing the heat through a thermochemical reaction. After reaching the designated position, an exothermic reaction occurs to release the heat, which is applied to the required scene, thereby realizing heat storage and release. The heat storage vehicle can achieve matching between the supply and demand of heat in rooms and locations, alleviating the tension between energy supply and demand to a certain extent, and complying with the national clean heating policy.

[0050] An air storage bin 32 is arranged outside the reaction cylinder 30, and the air storage bin 32 is connected to the reaction cylinder through a regulating valve 33; the air storage bin 32 is an annular structure, which is sleeved on the outer surface of the reaction cylinder 30; the air storage bin 32 is provided with a plurality of first air outlets spaced apart in the circumferential direction, and the reaction cylinder 30 is provided with a plurality of second air outlets corresponding to and connected to the first air outlets; a regulating valve 33 is arranged on the first air outlet.

[0051] The gas generated by the reaction medium in the reaction cylinder 30 is introduced into the gas storage bin 32. By adjusting the closing of the regulating valve 33, the connection and disconnection between the reaction cylinder 30 and the gas storage bin 32 are realized, thereby controlling the start, stop and reaction efficiency of the chemical reaction in the reaction cylinder 30.

[0052] The reaction tube 30 and the vehicle body 29 are rotationally connected via a rotating bearing; specifically, the reaction tube 30 is connected to the outer ring of the rotating bearing, the inner ring of the rotating bearing is connected to the vehicle body 29 via a bearing support 34, and the inner ring of the rotating bearing is fixedly connected to the heat transfer pipeline 31.

[0053] The reaction tube 30 and the vehicle body 29 are rotatably connected, so that the reaction medium can react more fully, and at the same time, sufficient heat exchange between the reaction medium in the reaction tube 30 and the heat transfer medium in the heat transfer pipeline 31 can be achieved.

[0054] In order to drive the cylinder to rotate, a driving motor 35 is installed on the vehicle body 29, and the driving end of the driving motor 35 is fixedly connected to the reaction cylinder. During the rotation process, the inner ring of the rotating bearing is relatively fixed relative to the vehicle body 29, that is, the heat transfer pipeline 31 rotates relative to the reaction cylinder 30.

[0055] The outer shell shape of the heat transfer pipeline 31 is a combination of a cylinder and a hemispherical shape; an axial section is provided inside the heat transfer pipeline 31, and the axial section divides the cylindrical part of the heat transfer pipeline 31 into two, forming a U-shaped pipeline with a semicircular fluid flow section; further, the two pipelines in the heat transfer pipeline 31 are respectively connected to the first interface 36 and the second interface 37, and can form a loop with the external heat exchanger.

[0056] The reaction medium in the reaction chamber of the thermochemical heat storage vehicle 25 is one or a mixture of at least two of chemical heat storage materials such as calcium carbonate, calcium oxide, calcium hydroxide, magnesium carbonate, magnesium oxide, magnesium hydroxide, lead carbonate, barium oxide, cobalt oxide, and aluminum oxide.

[0057] The reaction medium in the heat transfer pipeline 31 of the thermochemical heat storage vehicle 25 is composed of one or more of potassium nitrate, calcium nitrate, sodium nitrate, sodium nitrite, lithium nitrate, chloride salt, fluoride salt, heat transfer oil, compressed gas, liquid metal, and water, and can also be composed of one or more gases, such as: air, nitrogen, argon, helium, etc.

[0058] The liquid cold storage working fluid is composed of one or more of alkanes: propane, butane, pentane, hexane, heptane, isohexane, etc., alcohols: methanol, ethanol, etc., liquid gases: nitrogen, helium, neon, argon, krypton, air, hydrogen, methane, etc., and liquefied natural gas.

[0059] The thermochemical heat storage vehicle 25 includes at least one temperature detection device, at least one pressure detection device, and at least one safety valve.

[0060] Usage and principle

[0061] When the factory produces high-grade waste heat, the thermochemical heat storage vehicle 25 is moved to the front of the factory, and the waste heat generated in the factory is transferred to the heat transfer medium in the heat transfer pipeline 31. The heat transfer medium transfers the heat to the reaction medium in the reaction cylinder 30. After the reaction medium absorbs the heat, an endothermic reaction occurs. The reaction medium decomposes to generate solid products and gas. The generated reaction gas flows out from the regulating valve 33 and enters the gas storage bin 32 for storage. When the heat is stored, the heat storage ends, and the regulating valve 33 is closed to isolate the decomposition product.

[0062] During peak electricity consumption, the thermochemical heat storage vehicle 25 is moved to the power generation unit 6, and the regulating valve 33 is opened to allow the reaction gas to enter the reaction chamber of the reaction tube 30, so that the reaction gas and the solid product undergo an exothermic reaction. The heat released by the reaction is transferred to the heat transfer medium in the heat transfer pipeline 31, thereby driving the power generation unit 6 to generate electricity; the opening of the regulating valve 33 can also be adjusted to adjust the reaction rate.

[0063] Example 2

[0064] This embodiment provides a thermal storage vehicle heat storage system, including the thermochemical thermal storage vehicle 25 in Embodiment 1; and also including: an industrial waste heat exchanger, a thermal storage fluid driving device 26 and a heat absorption fluid driving device 28;

[0065] The high temperature side of the industrial waste heat exchanger is connected to the waste heat pipeline of the factory, and a heat absorption fluid driving device 28 is arranged between them; the low temperature side of the industrial waste heat exchanger is connected to the heat transfer pipeline 31 of the thermochemical heat storage vehicle 25, and a heat storage fluid driving device 26 is arranged between them.

[0066] When the factory produces high-grade waste heat, the thermochemical heat storage vehicle 25 moves to the front of the factory, connects the first interface 36 and the second interface 37 to the high-temperature side of the industrial waste heat exchanger, and on the factory side, the heat absorption fluid driving device 28 drives the heat transfer fluid to flow into the factory to absorb heat energy, and then flows along the pipeline into the industrial waste heat absorption heat exchanger 27 to release heat energy. After releasing the heat energy, the heat transfer fluid flows to the driving device again to participate in the circulation again.

[0067] On the side of the thermochemical heat storage vehicle 25, the heat storage fluid driving device 26 drives the heat transfer medium to flow into the industrial waste heat absorption heat exchanger 27 to absorb heat energy to a high temperature state, and then flows along the pipeline to the first interface 36 of the thermochemical heat storage vehicle 25, and enters the thermochemical heat storage vehicle 25 to release heat energy.

[0068] Among them, the flowing working fluid that absorbs industrial waste heat from the factory can be one or more components of potassium nitrate, calcium nitrate, sodium nitrate, sodium nitrite, lithium nitrate, chloride salts, fluoride salts, heat transfer oil, compressed gas, liquid metal, water, or one or more components of gas, such as: air, nitrogen, argon, helium, etc.

[0069] When using molten salt, it is necessary to note that the temperature of the flowing fluid in the circuit cannot be lower than its freezing point.

[0070] Example 3

[0071] This embodiment provides a regenerative energy storage power generation system, including: an energy release expansion unit 5 and a high-temperature heat exchanger 4; the energy release expansion unit 5 is drivingly connected to a power generation unit 6, the high-temperature side of the high-temperature heat exchanger 4 is connected to the heat transfer pipeline 31 of the thermochemical heat storage vehicle 25 in Embodiment 1, and the low-temperature side is connected to the energy release expansion unit 5;

[0072] Furthermore, it also includes: an energy-releasing compressor unit 2, a refrigeration circuit and a low-temperature heat exchanger 1; the energy-releasing compressor unit 2 is transmission-connected with the energy-releasing expansion unit 5; the energy-releasing expansion unit 5 and the energy-releasing compressor unit 2 drive the power generation unit 6 to generate electricity, converting kinetic energy into electrical energy for release.

[0073] The low-temperature side of the low-temperature heat exchanger 1 is connected to a refrigeration circuit that generates cold energy, and the high-temperature side is connected to an energy-releasing compressor unit 2 .

[0074] The refrigeration circuit includes the refrigeration process and the cold storage process;

[0075] The refrigeration process includes: a drive unit 13, a first-stage refrigeration expansion unit 14, a second-stage refrigeration expansion unit 15, a first-stage refrigeration compressor unit 16, a second-stage refrigeration compressor unit 17, a first-stage cooler 18, a second-stage cooler 19, a third-stage cooler 20, a fourth-stage cooler 21, a control valve 22, and a filter 23.

[0076] The specific flow of the refrigeration process is as follows: the flowing medium in the refrigeration circuit is air. The filter 23 is started to filter out dust in the air and dehumidify the air at the same time. The dehumidified dry air enters the first-stage refrigeration compressor unit 16 for compression, then enters the first-stage cooler 18 for cooling to room temperature, enters the second-stage refrigeration compressor unit 17 for compression again, and then enters the second-stage cooler 19 for cooling to room temperature high pressure. The first-stage cooler 18 and the second-stage cooler 19 dissipate heat from the environment, and can be cooled by water or air.

[0077] The room temperature and high pressure air enters the third stage cooler 20 for further cooling and then enters the first stage refrigeration expander for expansion, then flows into the fourth stage cooler 21 for further cooling and then enters the second stage refrigeration expander for expansion to low temperature and normal pressure.

[0078] The low-temperature, normal-pressure air is divided into two paths, one of which flows into the fourth-stage cooler 21 and the third-stage cooler 20 in sequence along the pipeline to release cold energy. The other path enters the cold energy absorption heat exchanger 12 to release cold energy. The air flow of the two paths is allocated by the control valve 22.

[0079] The cold storage process includes: a low-temperature liquid cold storage tank 7, a normal temperature liquid storage tank 10, a cold storage drive pump 11, and a cold energy absorption heat exchanger 12.

[0080] The specific flow of the cold storage process is: start the cold storage drive pump 11 to drive the liquid cold storage medium to flow out of the normal temperature liquid storage tank 10, flow into the cold energy absorption heat exchanger 12 to absorb cold energy to a low temperature state, and then enter the low-temperature liquid cold storage tank 7 along the pipeline for storage.

[0081] The cold release driving pump 8 is started to drive the liquid cold storage medium to flow out of the low-temperature liquid cold storage tank 7 and enter the low-temperature heat exchanger 1 to release cold energy. The liquid cold storage medium that has released the cold energy returns to the normal temperature liquid storage tank 10 for storage.

[0082] Furthermore, an intermediate heat exchanger 3 is installed between the low-temperature heat exchanger 1 and the high-temperature heat exchanger 4. The sub-high-temperature, normal-pressure gas flowing out of the energy-releasing expansion unit 5 flows into the second passage of the intermediate heat exchanger 3 to release heat energy and reach room temperature and normal pressure. The gas working fluid at room temperature and normal pressure reenters the low-temperature heat exchanger 1 to absorb cold energy. In this way, the cold and heat energy is converted into electrical energy and released repeatedly.

[0083] The irreversible loss generated by the system during the power release process is transferred to the cold release system through the low-temperature heat exchanger 1 and is dissipated into the environment through the waste heat dissipation heat exchanger 9.

[0084] Furthermore, the driving unit 13 is a driving motor or an electric machine. When the driving unit 13 is a driving motor, the power source is one or more of conventional power station off-peak electricity, nuclear power, wind power, solar power, hydropower or tidal power.

[0085] The total pressure ratio of the compressor unit in the refrigeration circuit and the cold and heat energy heat engine power generation circuit is between 3-40. When the compressor unit consists of multiple compressors, the multiple compressors are in a coaxial series form or a split-shaft parallel form. In the parallel form, each split shaft is dynamically connected to the main drive shaft; the expansion unit in the refrigeration circuit and the cold and heat energy heat engine power generation circuit has a total expansion ratio between 3-40; when the expansion unit consists of multiple expanders, the multiple expanders are in a coaxial series form or a split-shaft parallel form; in the parallel form, each split shaft is dynamically connected to the main drive shaft.

[0086] The number of stages of the compressor group of the refrigeration circuit takes a two-stage compressor as an example in the above description, but it can actually be 2, 3, 4, 5, or 6 stages.

[0087] The number of expansion units in the refrigeration circuit takes a two-stage compressor as an example in the above description, but it can actually be 2, 3, 4, 5, or 6 stages.

[0088] When the flowing working medium in the heat transfer fluid flow pipeline of the heat storage vehicle is a liquid working medium, the heat releasing fluid driving device 24 and the heat storage fluid driving device 26 are one or more booster pumps used in parallel or in series; when the flowing working medium in the circuit is a gas working medium, the heat releasing fluid driving device 24 and the heat storage fluid driving device 26 are one or more circulating fans used in parallel or in series.

[0089] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A thermochemical heat storage vehicle, characterized in that: include: a vehicle body having drive wheels; A reaction cylinder is arranged on the vehicle body; the reaction cylinder has a reaction cavity; a reaction medium is arranged in the reaction cavity; the reaction medium is suitable for endothermic reaction and exothermic reaction; A heat transfer pipeline is arranged in the reaction chamber; the outer surface of the heat transfer pipeline is suitable for contacting with the reaction medium to complete the heat transfer; the heat transfer pipeline has a containing cavity, and the heat transfer medium is arranged in the containing cavity; the heat transfer pipeline has at least a first interface and a second interface; A gas storage bin is arranged outside the reaction cylinder; the gas storage bin is connected to the reaction chamber through a regulating valve; The reaction cylinder is rotatably connected to the vehicle body via a rotary bearing; The reaction cylinder is connected to the outer ring of the rotating bearing; the inner ring of the rotating bearing is connected to the vehicle body through a bearing support; and the heat transfer pipeline is fixedly connected to the inner ring of the rotating bearing.

2. The thermochemical heat storage vehicle according to claim 1, characterized in that: The gas storage bin is an annular structure, which is sleeved on the outer surface of the reaction cylinder; The gas storage bin is provided with a plurality of first gas outlets spaced apart in the circumferential direction, the reaction cylinder is provided with a plurality of second gas outlets correspondingly connected to the first gas outlets; and a regulating valve is provided on the first gas outlet.

3. The thermochemical heat storage vehicle according to claim 1, characterized in that: Also includes: A driving motor is fixedly arranged on the vehicle body; a driving end of the driving motor is fixedly connected to the reaction cylinder.

4. The thermochemical heat storage vehicle according to claim 1, characterized in that: The reaction medium is one or more of calcium carbonate, calcium oxide, calcium hydroxide, magnesium carbonate, magnesium oxide, magnesium hydroxide, lead carbonate, barium oxide, cobalt oxide and aluminum oxide; The heat transfer medium is one or more of potassium nitrate, calcium nitrate, sodium nitrate, sodium nitrite, lithium nitrate, chloride salt, fluoride salt, heat transfer oil, compressed gas, liquid metal and water.

5. The heat storage vehicle heat storage system is characterized by: The thermochemical heat storage vehicle comprises any one of claims 1 to 4; and further comprises: Industrial waste heat exchanger, the high temperature side is suitable for connecting with the waste heat pipeline of the factory, and the low temperature side is connected with the heat transfer pipeline of the thermochemical heat storage vehicle.

6. A heat recovery energy storage power generation system, characterized in that: A thermochemical heat storage vehicle comprising any one of claims 1 to 4; Also includes: The energy-release expansion unit is drivingly connected to the power generation unit; A high-temperature heat exchanger, wherein the high-temperature side of the high-temperature heat exchanger is connected to the heat transfer pipeline of the thermochemical heat storage vehicle, and the low-temperature side is connected to the energy release expansion unit.

7. The heat recovery energy storage power generation system according to claim 6, characterized in that: Also includes: The energy-releasing compressor unit is transmission-connected to the energy-releasing expander unit; Refrigeration circuit, generating cold energy; A low-temperature heat exchanger, wherein the low-temperature side of the low-temperature heat exchanger is connected to the refrigeration circuit, and the high-temperature side of the low-temperature heat exchanger is connected to the energy-releasing compressor unit.

8. The heat recovery energy storage power generation system according to claim 7, characterized in that: The refrigeration circuit includes: a low-temperature liquid cold storage tank, a normal-temperature liquid storage tank, a cold storage drive pump, a cold energy absorption heat exchanger and a refrigeration component; The liquid cold storage medium is driven to flow out of the normal temperature liquid storage tank, flow into the cold energy absorption heat exchanger to absorb the cold energy generated by the refrigeration component to a low temperature state, and then enter the low temperature liquid cold storage tank along the pipeline for storage.

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