阅读说明：本技术 一种储热棒长距离移动储能系统及其运行方法 (Long-distance mobile energy storage system of heat storage rod and operation method thereof ) 是由 黄云 宋民航 刘文巍 靳星 于 2021-08-23 设计创作，主要内容包括：本发明提供了一种储热棒长距离移动储能系统及其运行方法,所述移动储能系统包括储热单元、输送单元、释热单元以及储热棒；所述储热单元包括第一换热腔、输送腔、出口气流腔以及入口气流腔；所述输送单元包括可移动设备以及设置于所述可移动设备上的存储腔；所述释热单元包括第一换热腔、第二换热腔、输送腔、出口气流腔以及入口气流腔；所述第一换热腔以及存储腔均用于存储所述储热棒；所述输送单元在储热单元与释热单元之间移动用于运输储热棒,并与所述输送腔进行对接；所述移动储能系统具有储热单元模块化、储释热过程无需储热车长时间等待、日储释热循环效率高及综合运行成本低的优点,适用于余废热利用等领域。(The invention provides a long-distance mobile energy storage system of a heat storage rod and an operation method thereof, wherein the mobile energy storage system comprises a heat storage unit, a conveying unit, a heat release unit and a heat storage rod; the heat storage unit comprises a first heat exchange cavity, a conveying cavity, an outlet airflow cavity and an inlet airflow cavity; the conveying unit comprises a movable device and a storage cavity arranged on the movable device; the heat release unit comprises a first heat exchange cavity, a second heat exchange cavity, a conveying cavity, an outlet airflow cavity and an inlet airflow cavity; the first heat exchange cavity and the storage cavity are used for storing the heat storage rod; the conveying unit moves between the heat storage unit and the heat release unit, is used for conveying the heat storage rod, and is in butt joint with the conveying cavity; the mobile energy storage system has the advantages of modularization of the heat storage unit, no need of long-time waiting of a heat storage vehicle in the heat storage and release process, high daily heat storage and release cycle efficiency and low comprehensive operation cost, and is suitable for the fields of utilization of waste heat and the like.)

1. A long-distance mobile energy storage system with a heat storage rod is characterized by comprising a heat storage unit, a conveying unit, a heat release unit and a heat storage rod;

the heat storage unit comprises a first heat exchange cavity and a conveying cavity arranged on one side of the first heat exchange cavity in parallel; the top end and the bottom end of the first heat exchange cavity are also provided with airflow cavities independently;

the conveying unit comprises a movable device and a storage cavity arranged on the movable device;

the heat release unit comprises a first heat exchange cavity and a conveying cavity arranged on one side of the first heat exchange cavity in parallel; a second heat exchange cavity is arranged on the other side of the first heat exchange cavity in parallel; the top end and the bottom end of the first heat exchange cavity are also provided with airflow cavities independently;

the first heat exchange cavity and the storage cavity are used for storing the heat storage rod;

the conveying unit moves between the heat storage unit and the heat release unit, is used for conveying the heat storage rod, and is in butt joint with the conveying cavity.

2. The mobile energy storage system of claim 1, wherein the airflow chamber at the top end of the first heat exchange chamber is an outlet airflow chamber and the airflow chamber at the bottom end is an inlet airflow chamber;

preferably, the outlet airflow chamber of the heat storage unit comprises an airflow chamber outlet baffle plate arranged inside the gas outlet and a gas outlet pipe penetrating through the bottom of the outlet airflow chamber and the top of the first heat exchange chamber;

preferably, the outlet airflow chamber of the cartridge comprises a gas outlet tube extending through the bottom of the outlet airflow chamber and the top of the first heat exchange chamber;

preferably, the number of the gas outlet pipes is not less than 2, and the gas outlet pipes are uniformly arranged;

preferably, the inlet gas flow chamber comprises a gas flow chamber inlet baffle plate arranged inside the gas inlet and a gas inlet pipe penetrating the top of the inlet gas flow chamber and the bottom of the first heat exchange chamber;

preferably, the number of the gas inlet pipes is not less than 2, and the gas inlet pipes are uniformly arranged;

preferably, the length of the gas inlet pipe is gradually longer along the gas inlet direction in the inlet gas flow cavity;

preferably, the inner wall of the inlet airflow cavity is provided with an insulating layer.

3. The mobile energy storage system of claim 1 or 2, wherein a top end of a side wall of the first heat exchange cavity is provided with a first heat exchange cavity inlet penetrating the conveying cavity;

preferably, an upper lifting plate is arranged at the lower edge of the inlet of the first heat exchange cavity;

preferably, the upper lifting plate is inclined downwards towards the first heat exchange cavity, and the inclination angle is 2-8 degrees;

preferably, rails are symmetrically arranged on two side walls, adjacent to the side wall provided with the inlet of the first heat exchange cavity, inside the first heat exchange cavity, and the symmetrically arranged rails are specified to be 1 group;

preferably, the rail is an elongated flat plate structure;

preferably, the track is used for placing a heat storage rod;

preferably, at least 2 groups of rails are arranged along the height direction of the first heat exchange cavity;

preferably, each group of tracks inclines downwards, the downward inclination directions of the tracks are consistent, and the inclination angles are independently 2-8 degrees;

preferably, two adjacent groups of tracks are arranged in a staggered manner to form a serpentine channel for the heat storage rods to pass through;

preferably, a first heat exchange cavity outlet penetrating through the conveying cavity is formed in the bottom end of the side wall of the first heat exchange cavity;

preferably, a first heat exchange cavity outlet moving vertical plate is arranged on the upper edge of the first heat exchange cavity outlet;

preferably, a lower lifting plate is arranged on the lower edge of the outlet of the first heat exchange cavity;

preferably, the lower lifting plate is inclined downwards towards the conveying cavity, and the inclination angle is 2-8 degrees;

preferably, the inner wall of the first heat exchange cavity is provided with an insulating layer.

4. A mobile energy storage system according to any of claims 1 to 3, wherein a heat storage rod transfer device is arranged in the delivery cavity;

preferably, the heat storage rod conveying device comprises an upper roller, a lower roller, a chain and lifting teeth, wherein the chain is sleeved between two ends of the upper roller and the lower roller respectively, and the lifting teeth are arranged on the chain;

preferably, the end surfaces of the upper end and the lower end of the lifting tooth are arc-shaped, the sections of the left end and the right end are fan-shaped with different sizes, and one end of each fan-shaped with a small size is connected with the chain;

preferably, a conveying cavity inlet is arranged at the middle upper part of the side wall of the conveying cavity and used for being butted with the conveying unit;

preferably, a conveying cavity inlet baffle is arranged at the conveying cavity inlet;

preferably, a conveying cavity outlet is arranged at the lower part of the side wall of the conveying cavity and used for being butted with the conveying unit;

preferably, a conveying cavity outlet baffle is arranged at the conveying cavity outlet;

preferably, the inner wall of the conveying cavity is provided with an insulating layer.

5. The mobile energy storage system of any of claims 1-4, wherein the mobile device comprises a heat transport vehicle;

preferably, the top end of the side wall of the tail part of the storage cavity is provided with a conveying unit inlet;

preferably, a conveying unit inlet baffle is arranged at the conveying unit inlet;

preferably, the bottom end of the side wall of the tail part of the storage cavity is provided with a conveying unit outlet;

preferably, a conveying unit outlet baffle is arranged at the conveying unit outlet;

preferably, the inner wall of the storage cavity is provided with an insulating layer;

preferably, a conveying unit inner baffle is arranged between the inner wall of the storage cavity at the upper part of the conveying unit outlet and the heat insulation layer;

preferably, rails are symmetrically arranged on two side walls adjacent to the side wall provided with the inlet of the conveying unit in the storage cavity, and 1 group of symmetrically arranged rails is defined;

preferably, the rail is an elongated flat plate structure;

preferably, the track is used for placing a heat storage rod;

preferably, at least 2 sets of rails are provided in the height direction of the storage chamber;

preferably, each group of tracks inclines downwards, the downward inclination directions of the tracks are consistent, and the inclination angles are independently 2-8 degrees;

preferably, the two adjacent groups of tracks are arranged in a staggered mode to form a serpentine channel for the heat storage rods to pass through.

6. The mobile energy storage system of any one of claims 1-5, wherein an insulating layer is disposed on an inner wall of the outlet airflow cavity of the heat release unit.

7. A mobile energy storage system according to any of claims 1 to 6, wherein a divider plate is provided within the second heat exchange chamber;

preferably, when the partition plate is a vertical partition plate arranged in the middle of the top end of the second heat exchange cavity, the interior of the second heat exchange cavity is partitioned into a U-shaped cavity;

preferably, a U-shaped pipe penetrating through the top end of the second heat exchange cavity is arranged in the U-shaped cavity;

preferably, when the partition plate is a horizontal partition plate which is arranged on the side wall of the second heat exchange cavity in a vertically staggered manner along the horizontal direction, the interior of the second heat exchange cavity is partitioned into a snake-shaped cavity;

preferably, a coiled pipe adapted to the horizontal partition plate is arranged in the coiled chamber, and two end parts of the coiled pipe penetrate through the top end of the second heat exchange cavity;

preferably, the top end of the side wall of the second heat exchange cavity close to one side of the first heat exchange cavity is communicated with the outlet airflow cavity;

preferably, a gas outlet of the heat release unit is arranged at the top end of the side wall of the second heat exchange cavity, which is far away from one side of the first heat exchange cavity;

preferably, a heat releasing unit outlet baffle is arranged close to the heat releasing unit gas outlet;

preferably, the inner wall of the second heat exchange cavity is provided with an insulating layer.

8. The mobile energy storage system of any one of claims 1 to 7, wherein the heat storage rod comprises rolling ends symmetrically arranged at two ends and necking sections connected with the rolling ends;

preferably, the diameter of the rolling end is 0.5-0.8 times of the maximum diameter of the heat storage rod;

preferably, the axial length of the rolling end is equal to the width of the track;

preferably, an annular groove or a through hole is arranged between the necking sections at the two ends of the heat storage rod;

preferably, the number of the annular grooves is not less than 8;

preferably, the width and the depth of two adjacent annular grooves are different;

preferably, an axial rib plate or a radial rib plate is arranged inside the heat storage rod.

9. The mobile energy storage system of any of claims 1-8, wherein the heat storage rod is filled with a heat storage material;

preferably, the heat storage material comprises a phase change material and/or a thermochemical material;

preferably, the phase change material comprises a hydrated salt and/or a paraffin;

preferably, the thermochemical material comprises lime and/or aluminum powder.

10. A method of operating a mobile energy storage system according to any of claims 1 to 9, the method comprising the steps of:

(1) filling a heat storage rod in a first heat exchange cavity of the heat storage unit; gas at 300-1100 ℃ from an industrial system enters a first heat exchange cavity through an airflow cavity at the bottom end of the first heat exchange cavity of the heat storage unit, exchanges heat with a heat storage rod, and is discharged through the airflow cavity at the top end of the first heat exchange cavity of the heat storage unit;

(2) conveying the heat storage rod subjected to heat exchange in the step (1) into a storage cavity of a conveying unit through a conveying cavity of the heat storage unit, and then conveying the heat storage rod into a heat release unit through the conveying unit;

(3) the heat storage rod in the storage cavity of the conveying unit is conveyed into a first heat exchange cavity of the heat releasing unit through the conveying cavity of the heat releasing unit; air at the temperature of-10-30 ℃ enters the first heat exchange cavity through the airflow cavity at the bottom end of the first heat exchange cavity of the heat release unit and exchanges heat with the heat storage rod for the first time; the temperature of the air after heat exchange is increased to 250-1050 ℃, then the air enters a second heat exchange cavity through an airflow cavity at the top end of a first heat exchange cavity of a heat release unit for secondary heat exchange, and the air after secondary heat exchange is discharged for subsequent utilization;

(4) the heat storage rod subjected to the primary heat exchange in the step (3) is transported back to the storage cavity of the conveying unit through the conveying cavity of the heat release unit; and (3) conveying the heat storage rod back to the heat storage unit by the conveying unit to perform the heat storage operation in the step (1) so as to realize circulation.

Technical Field

The invention belongs to the technical field of energy conservation, and particularly relates to a long-distance mobile energy storage system of a heat storage rod and an operation method thereof.

Background

The heat storage technology is one of the important means for solving the problem of utilizing the residual heat and improving the energy utilization efficiency. The technology absorbs heat in industrial waste heat by means of heat storage materials, and realizes storage or release of the heat. For the problem of remote heat energy storage and utilization, a mobile energy storage technology is often adopted to store the residual and waste heat of high-energy-consumption industrial systems such as chemical plants, thermal power plants and the like, and then the residual and waste heat is transported to a remote heat utilization unit for utilization, such as central heating, hot water supply, standby heat sources and the like. In summary, the main advantage of the mobile energy storage technology is to recover and utilize the industrial waste heat, thereby improving the energy utilization rate. However, the mobile energy storage technology at the present stage still has certain defects: the vehicle is adopted for long-distance transportation, namely, the vehicle provided with the energy storage device is used for heat charging, transportation and heat release, and the energy storage device is usually integrated and fixed on the vehicle, so that the heat storage vehicle and a driver need to wait for a long time (about 3-4 hours) in the heat charging and heat release process, the heat recycling efficiency is reduced, the flexibility is low, the comprehensive operation maintenance and labor cost are increased, and the popularization and application of the mobile heat storage technology in the utilization of residual heat and waste heat are restricted.

Aiming at the problems of long heat storage and release time, low daily cycle utilization rate of energy storage vehicles and high operation cost in the existing mobile energy storage technology, how to provide a long-distance mobile energy storage system and an operation method which have the advantages of no need of long-time waiting of heat storage vehicles in the heat storage and release process, high heat cycle efficiency and reduction of comprehensive operation cost becomes an important problem to be solved urgently at present.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a long-distance mobile energy storage system with a heat storage rod and an operation method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, the invention provides a long-distance mobile energy storage system with a heat storage rod, which comprises a heat storage unit, a conveying unit, a heat release unit and a heat storage rod;

the heat storage unit comprises a first heat exchange cavity and a conveying cavity arranged on one side of the first heat cavity in parallel; the top end and the bottom end of the first heat exchange cavity are also provided with airflow cavities independently;

the conveying unit comprises a movable device and a storage cavity arranged on the movable device;

the heat release unit comprises a first heat exchange cavity and a conveying cavity arranged on one side of the first heat exchange cavity in parallel; a second heat exchange cavity is arranged on the other side of the first heat exchange cavity in parallel; the top end and the bottom end of the first heat exchange cavity are also provided with airflow cavities independently;

the first heat exchange cavity and the storage cavity are used for storing the heat storage rod;

the conveying unit moves between the heat storage unit and the heat release unit, is used for conveying the heat storage rod, and is in butt joint with the conveying cavity.

In the invention, the heat storage unit and the heat release unit respectively comprise a first heat exchange cavity, a conveying cavity and 2 airflow cavities, and the 4 cavities have compact structures and save occupied space; the design of the conveying cavity greatly improves the recycling efficiency of the heat storage rod and saves the waiting time; in addition, the heat release unit also comprises a second heat exchange cavity which can be used by other systems for utilizing the recovered heat, thereby having better economic benefit.

The following technical solutions are preferred technical solutions of the present invention, but not limited to the technical solutions provided by the present invention, and technical objects and advantageous effects of the present invention can be better achieved and achieved by the following technical solutions.

As a preferable technical scheme of the invention, the airflow cavity at the top end of the first heat exchange cavity is an outlet airflow cavity, and the airflow cavity at the bottom end of the first heat exchange cavity is an inlet airflow cavity.

Preferably, the outlet airflow chamber of the heat storage unit comprises an airflow chamber outlet baffle plate arranged inside the gas outlet and a gas outlet pipe penetrating through the bottom of the outlet airflow chamber and the top of the first heat exchange chamber.

Preferably, the outlet airflow chamber of the cartridge includes a gas outlet tube that extends through the bottom of the outlet airflow chamber and the top of the first heat exchange chamber.

Preferably, the number of gas outlet pipes is not less than 2, and the gas outlet pipes are uniformly arranged, for example, 2, 3, 4, 5, 6, 7 or 8, etc., but not limited to the recited values, and other values not recited in the range of the values are also applicable.

Preferably, the inlet gas flow chamber comprises a gas flow chamber inlet baffle plate disposed inside the gas inlet and a gas inlet pipe penetrating the top of the inlet gas flow chamber and the bottom of the first heat exchange chamber.

In the invention, the inlet and outlet baffle plates of the airflow cavity are used for adjusting the gas flow.

Preferably, the gas inlet pipes are not less than 2 and are uniformly arranged, such as 2, 3, 4, 5, 6, 7 or 8, etc., but not limited to the recited values, and other values not recited in the range of values are equally applicable.

Preferably, the length of the gas inlet pipe is gradually longer along the gas inlet direction in the inlet gas flow cavity.

According to the invention, the structural design of the gas inlet pipes can ensure that the gas flow passing through each gas inlet pipe is relatively uniform, so that the problem of uneven heat distribution caused by uneven gas flow entering is avoided.

Preferably, the inner wall of the inlet airflow cavity is provided with an insulating layer.

In the invention, the design of each heat-insulating layer can avoid heat loss in the heat storage and release process.

As a preferable technical scheme of the invention, the top end of the side wall of the first heat exchange cavity is provided with a first heat exchange cavity inlet which penetrates through the conveying cavity.

Preferably, an upper lifting plate is arranged at the lower edge of the inlet of the first heat exchange cavity.

Preferably, the upper lifting plate is inclined downwards towards the first heat exchange chamber by an angle of 2-8 °, such as 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, or 8 °, but not limited to the values listed, and other values not listed in this range are also applicable.

Preferably, the tracks are symmetrically arranged on two side walls, adjacent to the side wall provided with the inlet of the first heat exchange cavity, inside the first heat exchange cavity, and the number of the symmetrically arranged tracks is 1.

Preferably, the rail is an elongated flat plate structure.

Preferably, the track is used for placing the heat storage rod.

Preferably, at least 2 sets of tracks, such as 2, 3, 4, 5, 6, 7 or 8 sets, etc., are provided along the height direction of the first heat exchange chamber, but not limited to the recited values, and other values not recited in the range of the values are also applicable.

Preferably, each set of tracks is inclined downwardly and in a uniform direction, but the angle of inclination is independently 2 to 8 °, such as 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, or 8 °, but not limited to the recited values, and other values not recited in this range are equally applicable.

In the present invention, the uniform downward inclination of the rails means that the same ends of the rails are inclined in the same direction.

Preferably, the two adjacent groups of tracks are arranged in a staggered mode to form a serpentine channel for the heat storage rods to pass through.

Preferably, a first heat exchange cavity outlet penetrating through the conveying cavity is formed in the bottom end of the side wall of the first heat exchange cavity.

Preferably, the upper edge of the first heat exchange cavity outlet is provided with a first heat exchange cavity outlet moving vertical plate.

According to the invention, the movable vertical plate at the outlet of the first heat exchange cavity can move up and down along the vertical direction, when the vertical plate moves downwards, the heat storage rod is prevented from rolling, and when the vertical plate moves upwards, the heat storage rod rolls into the conveying cavity through the outlet of the first heat exchange cavity.

Preferably, a lower lifting plate is arranged on the lower edge of the outlet of the first heat exchange cavity.

Preferably, the lower lift plate is inclined downward toward the conveying cavity at an angle of 2 to 8 °, for example, 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, or 8 °, but not limited to the values listed, and other values not listed in the range of values are also applicable.

Preferably, the inner wall of the first heat exchange cavity is provided with an insulating layer.

In the invention, the declination direction of the rail at the topmost end is consistent with the declination direction of the upper lifting plate, the declination direction of the rail at the bottommost end is consistent with the declination direction of the lower lifting plate, and one end of the rail is adjacent to the end part of the upper lifting plate or the lower lifting plate in order to transport the heat storage rod and avoid the heat storage rod from being damaged and falling.

As a preferable technical scheme of the invention, a heat storage rod conveying device is arranged in the conveying cavity.

Preferably, the heat storage rod conveying device comprises an upper roller, a lower roller, a chain and lifting teeth, wherein the chain is sleeved between two ends of the upper roller and the lower roller respectively, and the lifting teeth are arranged on the chain.

In the invention, the lower roller is connected with the external transmission device, and the external transmission device is started to rotate the lower roller, so that the chain can be driven to rotate, and the conveying function is realized.

Preferably, the end faces of the upper end and the lower end of the lifting tooth are arc-shaped, the cross sections of the left end and the right end are fans with different sizes, and one end of each fan with a small size is connected with the chain.

Preferably, a conveying cavity inlet is arranged at the middle upper part of the side wall of the conveying cavity and used for being butted with the conveying unit.

Preferably, a conveying cavity inlet baffle is arranged at the conveying cavity inlet.

Preferably, a conveying cavity outlet is arranged at the lower part of the side wall of the conveying cavity and used for being butted with the conveying unit.

Preferably, a conveying cavity outlet baffle is arranged at the conveying cavity outlet.

Preferably, the inner wall of the conveying cavity is provided with an insulating layer.

As a preferred technical scheme of the invention, the movable equipment comprises a heat transport vehicle.

Preferably, the top end of the side wall of the tail part of the storage cavity is provided with a conveying unit inlet.

In the invention, the storage cavity is arranged on the body of the heat transport vehicle, so that the tail part refers to the direction of the tail part of the vehicle.

Preferably, a conveying unit inlet baffle is arranged at the conveying unit inlet.

Preferably, the bottom end of the side wall of the tail part of the storage cavity is provided with a conveying unit outlet.

Preferably, a conveying unit outlet baffle is arranged at the conveying unit outlet.

Preferably, the inner wall of the storage cavity is provided with an insulating layer.

Preferably, a conveying unit inner baffle is arranged between the inner wall of the storage cavity at the upper part of the conveying unit outlet and the heat insulation layer.

In the invention, the inner baffle of the conveying unit can move up and down along the vertical direction, when the inner baffle moves down, the rolling of the heat storage rod is blocked, and when the inner baffle moves up, the heat storage rod does not roll out through the outlet of the heat transport vehicle without being blocked by the inner baffle.

Preferably, the tracks are symmetrically arranged on two side walls adjacent to the side wall provided with the inlet of the conveying unit in the storage cavity, and 1 group of symmetrically arranged tracks is defined.

Preferably, the rail is an elongated flat plate structure.

Preferably, the track is used for placing the heat storage rod.

Preferably, at least 2 sets of tracks, for example 2, 3, 4, 5, 6, 7 or 8 sets, etc., are provided in the height direction of the storage chamber, but not limited to the values listed, and other values not listed in this range of values are equally applicable. .

Preferably, each set of tracks is inclined downwardly and in a uniform direction, but the angle of inclination is independently 2 to 8 °, such as 2 °, 3 °, 4 °, 5 °, 6 °, 7 °, or 8 °, but not limited to the recited values, and other values not recited in this range are equally applicable.

Preferably, the adjacent two groups of tracks are arranged in a staggered manner to form a serpentine channel for the heat storage rods to pass through

As a preferable technical scheme of the invention, the inner wall of the outlet airflow cavity of the heat release unit is provided with an insulating layer.

As the preferable technical scheme of the invention, a partition plate is arranged in the second heat exchange cavity.

Preferably, when the partition plate is a vertical partition plate arranged in the middle of the top end of the second heat exchange cavity, the partition plate divides the interior of the second heat exchange cavity into U-shaped cavities.

Preferably, a U-shaped pipe penetrating through the top end of the second heat exchange cavity is arranged in the U-shaped cavity.

Preferably, when the partition plate is a horizontal partition plate which is arranged on the side wall of the second heat exchange cavity in a vertically staggered manner along the horizontal direction, the interior of the second heat exchange cavity is partitioned into a snake-shaped cavity.

Preferably, a coiled pipe adapted to the horizontal partition plate is arranged in the coiled chamber, and two end portions of the coiled pipe penetrate through the top end of the second heat exchange cavity.

Preferably, the top end of the side wall of the second heat exchange cavity close to one side of the first heat exchange cavity is communicated with the outlet airflow cavity.

Preferably, a gas outlet of the heat release unit is arranged at the top end of the side wall of the second heat exchange cavity far away from the first heat exchange cavity.

Preferably, a heat release unit outlet baffle is arranged close to the heat release unit gas outlet.

Preferably, the inner wall of the second heat exchange cavity is provided with an insulating layer.

As a preferable technical scheme of the invention, the heat storage rod comprises rolling ends symmetrically arranged at two ends and necking sections connected with the rolling ends.

According to the invention, the rolling ends at the two ends and the necking sections are arranged, so that the heat storage rod can stably roll along the track, and the problems of left and right deflection and jamming in the rolling process of the heat storage rod are avoided.

Preferably, the diameter of the rolling end is 0.5 to 0.8 times, for example 0.5 times, 0.6 times, 0.7 times or 0.8 times the maximum diameter of the heat storage rod, but not limited to the recited values, and other values not recited in the range of the recited values are also applicable.

Preferably, the axial length of the rolling end is equal to the width of the track.

Preferably, an annular groove or a through hole is arranged between the necking sections at the two ends of the heat storage rod.

Preferably, the annular groove is not less than 8, such as 8, 9, 10, 11, 12, 13, or 14, etc., but is not limited to the recited values, and other values not recited within the range are equally applicable.

Preferably, the width and depth of two adjacent annular grooves are not equal.

In the invention, the annular grooves on the same heating rod are not uniformly arranged, the width and the depth of two adjacent annular grooves are different, furthermore, the annular grooves between the adjacent heat storage rods cannot correspond to each other one by one, and a disordered distribution mode is adopted to promote heat exchange.

According to the invention, when the plurality of heat storage rods are adjacent, the annular grooves form airflow channels between the adjacent heat storage rods, and meanwhile, the contact area between high-temperature gas and the heat storage rods is increased, so that heat exchange is promoted; in addition, because the depth and the width of adjacent annular grooves are unequal, airflow channels with different sizes are formed, turbulent flow generated after high-temperature gas flows through the annular grooves is promoted, sufficient contact between the high-temperature gas and the heat storage rods is further promoted, and the heat exchange process is promoted.

In the present invention, the through-holes play the same role as the annular grooves, and thus the arrangement directions of the through-holes are different.

Preferably, an axial rib plate or a radial rib plate is arranged inside the heat storage rod.

As a preferable technical scheme of the invention, the heat storage rod is filled with a heat storage material.

Preferably, the heat storage material comprises a phase change material and/or a thermochemical material.

Preferably, the phase-changeable material comprises a hydrated salt and/or a paraffin.

Preferably, the thermochemical material comprises lime and/or aluminum powder.

In the invention, the heat storage material is not limited to the above materials, and may also include other materials with higher energy storage density.

In another aspect, the present invention provides an operation method of the above mobile energy storage system, where the operation method includes the following steps:

(1) filling a heat storage rod in a first heat exchange cavity of the heat storage unit; gas at 300-1100 ℃ from an industrial system enters a first heat exchange cavity through an airflow cavity at the bottom end of the first heat exchange cavity of the heat storage unit, exchanges heat with a heat storage rod, and is discharged through the airflow cavity at the top end of the first heat exchange cavity of the heat storage unit;

(2) conveying the heat storage rod subjected to heat exchange in the step (1) into a storage cavity of a conveying unit through a conveying cavity of the heat storage unit, and then conveying the heat storage rod into a heat release unit through the conveying unit;

(3) the heat storage rod in the storage cavity of the conveying unit is conveyed into a first heat exchange cavity of the heat releasing unit through the conveying cavity of the heat releasing unit; air at the temperature of-10-30 ℃ enters the first heat exchange cavity through the airflow cavity at the bottom end of the first heat exchange cavity of the heat release unit and exchanges heat with the heat storage rod for the first time; the temperature of the air after heat exchange is increased to 250-1050 ℃, then the air enters a second heat exchange cavity through an airflow cavity at the top end of a first heat exchange cavity of a heat release unit for secondary heat exchange, and the air after secondary heat exchange is discharged for subsequent utilization;

(4) the heat storage rod subjected to the primary heat exchange in the step (3) is transported back to the storage cavity of the conveying unit through the conveying cavity of the heat release unit; and (3) conveying the heat storage rod back to the heat storage unit by the conveying unit to perform the heat storage operation in the step (1) so as to realize circulation.

More specifically, the operating method further comprises the steps of:

the first stage is as follows: when the heat storage rods in each layer in the heat storage unit and the high-temperature gas reach or approach thermal balance, the heat charging process of the heat storage rods is completed; then, the conveying process of the heat storage rod is carried out, and the conveying process comprises the following operations:

a) closing the airflow cavity outlet baffle and the airflow cavity inlet baffle;

b) opening a conveying cavity inlet baffle and a conveying unit inlet baffle, and simultaneously moving down a conveying unit inner baffle; one end of the inlet baffle of the conveying unit extends into the lower edge of the inlet of the conveying cavity by adjusting the position of the heat conveying vehicle;

c) starting an external transmission mechanism connected with the lower roller to enable the lower roller to rotate clockwise, wherein the rotating lower roller drives a chain matched with the upper roller and the lower roller and lifting teeth on the chain to move clockwise;

d) move up and open first heat transfer chamber export and remove the riser, be located first heat transfer intracavity, and do not have the heat-retaining stick that first heat transfer chamber export removed the riser and blockked, will receive the effect of gravity, roll downwards along the track that each layer has a down dip. Then, the water flows out from the outlet of the first heat exchange cavity in sequence;

e) each rolled heat storage rod is further lifted and guided by the lower lifting plate, and the heat storage rod is sent into the circular arc-shaped groove at the upper end of the lifting tooth. The lifting teeth are driven by the chain to move clockwise, so that the effect of conveying the heat storage rods clockwise is achieved;

f) when the heat storage rods are conveyed to the conveying unit inlet baffle, under the supporting and declination guiding effects of the conveying unit inlet baffle, the heat storage rods roll to enter the heat transport vehicle storage cavity, then roll downwards along each layer of track, and fill the heat transport vehicle storage cavity from bottom to top in sequence;

g) closing the inlet baffle of the conveying cavity and the inlet baffle of the conveying unit after the step f) is finished.

Through the steps, the quick filling and transportation of each heat storage rod in the conveying unit are realized.

And a second stage: when the heat transport vehicle transports the full-hot heat storage rods to the heat release unit, the full-hot heat storage rods need to be transported into the heat release unit, and the operation steps are as follows:

a) closing the outlet baffle of the heat release unit and the inlet baffle of the airflow cavity;

b) opening the outlet baffle of the conveying cavity and the outlet baffle of the conveying unit, and enabling one end of the outlet baffle of the conveying unit to extend into the lower edge of the outlet of the conveying cavity by adjusting the position of the heat transport vehicle;

c) starting an external transmission mechanism connected with the lower roller to enable the lower roller to rotate clockwise, wherein the rotating lower roller drives a chain matched with the upper roller and the lower roller and lifting teeth on the chain to move clockwise;

d) the upward moving conveying unit inner baffle is positioned in the heat conveying vehicle storage cavity, and the heat storage rod which is not blocked by the conveying unit inner baffle rolls downwards along the track with each layer declined under the action of gravity. Then, the materials roll out from the outlet of the conveying unit in sequence;

e) each rolled heat storage rod is further lifted and guided by the outlet baffle of the conveying unit, and the heat storage rods are conveyed into the circular arc-shaped grooves at the upper ends of the lifting teeth. The lifting teeth are driven by the chain to move clockwise, so that the effect of conveying each heat storage rod clockwise is achieved;

f) when the heat storage rods are conveyed to the inlet of the first heat exchange cavity, under the lifting and declination guiding effects of the upper lifting plate, each heat storage rod rolls from the inlet of the first heat exchange cavity into the first heat exchange cavity, then rolls downwards along each layer of track, and fills the first heat exchange cavity from bottom to top in sequence;

g) closing the inlet baffle of the conveying cavity and the outlet baffle of the conveying unit after the step f) is finished.

Through the steps, the quick filling of each heat storage rod in the heat release unit is realized.

And a third stage: when each layer of heat storage rod in the heat release unit exchanges heat with surrounding gas to finish the heat release process, the heat storage rods after heat release are required to be conveyed back to the heat storage unit for heat storage again, and the operation steps are as follows:

a) closing the outlet baffle of the heat release unit and the inlet baffle of the airflow cavity;

b) opening a conveying cavity inlet baffle and a conveying unit inlet baffle, and simultaneously moving down a conveying unit inner baffle; one end of the inlet baffle of the conveying unit extends into the lower edge of the inlet of the conveying cavity by adjusting the position of the heat conveying vehicle;

c) starting an external transmission mechanism connected with the lower roller to enable the lower roller to rotate anticlockwise, wherein the rotating lower roller drives a chain matched with the upper roller and the lower roller and lifting teeth on the chain to move anticlockwise;

d) move up and open first heat transfer chamber export and remove the riser, be located first heat transfer intracavity, and do not have the heat-retaining stick that first heat transfer chamber export removed the riser and blockked, will receive the effect of gravity, roll downwards along the track that each layer has a down dip. Then, the water flows out from the outlet of the first heat exchange cavity positioned at the lower part in sequence;

e) each rolled heat storage rod is further lifted and guided by the lower lifting plate, and the heat storage rod is sent into the circular arc-shaped groove at the upper end of the lifting tooth. The lifting teeth are driven by the chain to move anticlockwise, so that the effect of conveying each heat storage rod anticlockwise is achieved;

f) when the heat storage rods are conveyed to the inlet baffle of the conveying unit, under the lifting and declination guiding effects of the inlet baffle of the heat transport vehicle, all the heat storage rods roll from the inlet of the conveying unit to enter the storage cavity of the heat transport vehicle, then roll downwards along each layer of track, and fill the storage cavity of the heat transport vehicle from bottom to top in sequence;

g) closing the inlet baffle of the conveying cavity and the inlet baffle of the conveying unit after the step f) is finished.

Through the steps, the quick filling and transportation of each heat storage rod in the heat transport vehicle are realized.

A fourth stage: after the heat transport vehicle transports each heat storage rod after heat release to the heat storage unit, each heat storage rod after heat release is transported into the heat storage unit, and the method comprises the following operations:

a) closing the airflow cavity outlet baffle and the airflow cavity inlet baffle;

b) opening the outlet baffle of the conveying cavity and the outlet baffle of the conveying unit, and enabling one end of the outlet baffle of the conveying unit to extend into the lower edge of the outlet of the conveying cavity by adjusting the position of the heat transport vehicle;

c) starting an external transmission mechanism connected with the lower roller to enable the lower roller to rotate anticlockwise, wherein the rotating lower roller drives a chain matched with the upper roller and the lower roller and lifting teeth on the chain to move anticlockwise;

d) the upward moving conveying unit inner baffle is positioned in the heat conveying vehicle storage cavity, and the heat storage rod which is not blocked by the conveying unit inner baffle rolls downwards along the track with each layer declined under the action of gravity. Then, the materials roll out from the outlet of the conveying unit in sequence;

e) each rolled heat storage rod is further lifted and guided by the outlet baffle of the conveying unit, and the heat storage rods are conveyed into the circular arc-shaped grooves at the upper ends of the lifting teeth. The lifting teeth move anticlockwise under the driving of the chain, so that the effect of conveying each heat storage rod anticlockwise is achieved;

f) when the heat storage rods are conveyed to the inlet of the first heat exchange cavity, under the lifting and downward inclination guiding effects of the upper lifting plate, each heat storage rod rolls from the inlet of the first heat exchange cavity into the first heat exchange cavity, then rolls downwards along each layer of track, and fills the first heat exchange cavity of the heat storage end from bottom to top in sequence;

g) and f), closing the outlet baffle of the conveying cavity and the outlet baffle of the conveying unit after the step f) is finished.

Through the steps, the quick filling of each heat storage rod in the heat storage unit is realized.

And then the first to fourth stages are circulated, and the long-distance continuous and rapid heat storage and release process of each heat storage rod is realized.

Compared with the prior art, the invention has the following beneficial effects:

(1) the mobile energy storage system adopts the heat storage rod as the heat storage element, and the waiting time of the conveying unit in the heat charging and releasing process is greatly reduced by flexibly loading and unloading the heat storage rod among the heat storage unit, the conveying unit and the heat releasing unit;

(2) according to the mobile energy storage system, the cylindrical heat storage rods with rolling advantages and the obliquely arranged rails are adopted in the heat storage units, the conveying units and the heat release units, and the heat storage rods are enabled to fall freely along the rails by means of the gravity effect, so that the heat storage rods are rapidly and orderly filled into the heat storage units, the conveying units and the heat release units, and the heat storage and release efficiency of the mobile heat storage system is further improved;

(3) the mobile energy storage system comprehensively optimizes the structure of the energy storage system, effectively improves the daily storage and heat release circulation efficiency of the mobile heat storage system, reduces the comprehensive operation cost, and has better industrial application prospect.

Drawings

Fig. 1 is a schematic structural diagram of a heat storage unit in a mobile energy storage system according to embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a conveying unit in a mobile energy storage system provided in embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of a heat release unit in the mobile energy storage system according to embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a heat storage rod in a mobile energy storage system according to embodiment 1 of the present invention;

fig. 5 is a radial cross-sectional view of a heat storage rod at the maximum diameter in a mobile energy storage system provided in embodiment 1 of the present invention;

fig. 6 is a radial cross-sectional view of a heat storage rod in a mobile energy storage system provided in embodiment 2 of the invention at the maximum diameter;

fig. 7 is a radial sectional view of a heat storage rod in a mobile energy storage system according to embodiment 3 of the present invention at the maximum diameter;

fig. 8 is a schematic arrangement diagram of a plurality of heat storage rods in the mobile energy storage system provided in embodiment 1 of the present invention;

fig. 9 is a schematic side view of an arrangement of heat storage rods and rails in the mobile energy storage system according to embodiment 1 of the present invention;

fig. 10 is a schematic top view of a heat storage rod and a track arrangement in the mobile energy storage system according to embodiment 1 of the present invention;

fig. 11 is a schematic perspective view of a heat storage rod transfer device in a mobile energy storage system according to embodiment 1 of the present invention;

fig. 12 is a schematic flow chart illustrating the process of unloading a heat storage rod from a heat storage unit in a mobile energy storage system according to embodiment 1 of the present invention;

fig. 13 is a schematic flow chart of a heat release unit loading heat storage rod in the mobile energy storage system according to embodiment 1 of the present invention;

fig. 14 is a schematic flow chart of unloading a heat-releasing unit from a heat-storing rod in a mobile energy-storing system according to embodiment 1 of the present invention;

fig. 15 is a schematic flow chart illustrating a process of loading a heat storage rod on a heat storage unit in the mobile energy storage system according to embodiment 1 of the present invention.

Wherein, 1-heat storage unit, 2-conveying unit, 3-heat release unit, 4-heat storage rod, 5-first heat exchange cavity, 6-conveying cavity, 7-outlet airflow cavity, 8-inlet airflow cavity, 9-heat conveying vehicle, 10-storage cavity, 11-second heat exchange cavity, 12-airflow cavity outlet baffle, 13-gas outlet pipe, 14-airflow cavity inlet baffle, 15-gas inlet pipe, 16-heat insulation layer, 17-first heat exchange cavity inlet, 18-upper lifting plate, 19-rail, 20-first heat exchange cavity outlet, 21-first heat exchange cavity outlet moving vertical plate, 22-lower lifting plate, 23-heat storage rod conveying device, 24-upper rolling shaft, 25-lower rolling shaft, 26-chain, 27-lifting teeth, 28-conveying cavity inlet, 29-conveying cavity inlet baffle, 30-conveying cavity outlet, 31-conveying cavity outlet baffle, 32-conveying unit inlet, 33-conveying unit inlet baffle, 34-conveying unit outlet, 35-conveying unit outlet baffle, 36-conveying unit inner baffle, 37-separation plate, 38-U-shaped pipe, 39-heat release unit gas outlet, 40-heat release unit outlet baffle, 41-rolling end, 42-necking section, 43-annular groove, 44-axial rib plate, 45-radial rib plate and 46-heat storage material.

Detailed Description

In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. However, the following examples are only simple examples of the present invention and do not represent or limit the scope of the present invention, which is defined by the claims.

The following are typical but non-limiting examples of the invention:

example 1:

the embodiment provides a long-distance mobile energy storage system of a heat storage rod and an operation method thereof, wherein the mobile energy storage system comprises a heat storage unit 1, a conveying unit 2, a heat release unit 3 and a heat storage rod 4;

the heat storage unit 1 comprises a first heat exchange cavity 5 and a conveying cavity 6 arranged on one side of the first heat exchange cavity 5 in parallel; the top end and the bottom end of the first heat exchange cavity 5 are also provided with airflow cavities independently; the structural schematic diagram of the heat storage unit 1 is shown in fig. 1;

the conveying unit 2 comprises a heat conveying vehicle 9 and a storage cavity 10 arranged on the heat conveying vehicle 9; the structure of the conveying unit 2 is schematically shown in fig. 2;

the heat release unit 3 comprises a first heat exchange cavity 5 and a conveying cavity 6 which is arranged on one side of the first heat exchange cavity 5 in parallel; a second heat exchange cavity 11 is arranged on the other side of the first heat exchange cavity 5 in parallel; the top end and the bottom end of the first heat exchange cavity 5 are also provided with airflow cavities independently; the structure of the heat release unit 3 is schematically shown in FIG. 3;

the structural schematic diagram of the heat storage rod 4 is shown in fig. 4; and the radial section view of the heat storage rod 4 at the maximum diameter is shown in FIG. 5;

the first heat exchange cavity 5 and the storage cavity 10 are used for storing the heat storage rod 4;

the conveying unit 2 moves between the heat storage unit 1 and the heat release unit 3 for conveying the heat storage rod 4 and is in butt joint with the conveying cavity 6.

The airflow cavity at the top end of the first heat exchange cavity 5 is an outlet airflow cavity 7, and the airflow cavity at the bottom end is an inlet airflow cavity 8; the outlet airflow cavity 7 of the heat storage unit 1 comprises an airflow cavity outlet baffle plate 12 arranged inside the gas outlet and a gas outlet pipe 13 penetrating the bottom of the outlet airflow cavity 7 and the top of the first heat exchange cavity 5; the outlet airflow cavity 7 of the heat release unit 3 comprises a gas outlet pipe 13 penetrating the bottom of the outlet airflow cavity 7 and the top of the first heat exchange cavity 5; the number of the gas outlet pipes 13 is 6, and the gas outlet pipes are uniformly arranged;

the inlet gas flow chamber 8 comprises a gas flow chamber inlet baffle 14 arranged inside the gas inlet and a gas inlet pipe 15 penetrating the top of the inlet gas flow chamber 8 and the bottom of the first heat exchange chamber 5; the number of the gas inlet pipes 15 is 6, and the gas inlet pipes are uniformly arranged; the length of the gas inlet pipe 15 is gradually increased along the gas inlet direction in the inlet airflow chamber 8; the inner wall of the inlet airflow chamber 8 is provided with an insulating layer 16.

The top end of the side wall of the first heat exchange cavity 5 is provided with a first heat exchange cavity inlet 17 which penetrates through the conveying cavity 6; the lower edge of the inlet 17 of the first heat exchange cavity is provided with an upper lifting plate 18; the upper lifting plate 18 is inclined downwards towards the first heat exchange cavity 5, and the inclination angle is 6 degrees;

rails 19 with long strip-shaped flat plate structures are symmetrically arranged on two side walls adjacent to the side wall provided with the first heat exchange cavity inlet 17 in the first heat exchange cavity 5, and the symmetrically arranged rails 19 are defined as 1 group; 8 groups of rails 19 are arranged along the height direction of the first heat exchange cavity 5; each group of tracks 19 is inclined downwards in the same downward inclination direction, and the inclination angle is 6 degrees; the two adjacent groups of tracks 19 are arranged in a staggered manner to form a snake-shaped channel for the heat storage rods 4 to pass through; the track 19 is used for placing the heat storage rods 4, and the arrangement schematic diagram of a plurality of heat storage rods 4 is shown in FIG. 8; fig. 9 shows a side view of the heat storage rod 4 and the track 19, and fig. 10 shows a top view of the heat storage rod;

a first heat exchange cavity outlet 20 which penetrates through the conveying cavity 6 is formed in the bottom end of the side wall of the first heat exchange cavity 5; a first heat exchange cavity outlet moving vertical plate 21 is arranged on the upper edge of the first heat exchange cavity outlet 20; a lower lifting plate 22 is arranged at the lower edge of the outlet 20 of the first heat exchange cavity; the lower lifting plate 22 is inclined downwards towards the direction of the conveying cavity 6, and the inclination angle is 6 degrees; and an insulating layer 16 is arranged on the inner wall of the first heat exchange cavity 5.

A heat storage rod conveying device 23 is arranged in the conveying cavity 6; the schematic perspective structure of the heat storage rod conveying device 23 is shown in fig. 11; the heat storage rod conveying device 23 comprises an upper roller 24, a lower roller 25, a chain 26 and lifting teeth 27, wherein the chain 26 is sleeved between two ends of the upper roller 24 and the lower roller 25 respectively, and the lifting teeth 27 are arranged on the chain 26; the end surfaces of the upper end and the lower end of the lifting tooth 27 are arc-shaped, the sections of the left end and the right end are in fan shapes with different sizes, and one end of the fan shape with the small size is connected with the chain 26;

a conveying cavity inlet 28 is arranged at the middle upper part of the side wall of the conveying cavity 6; a conveying cavity inlet baffle plate 29 is arranged at the conveying cavity inlet 28; a conveying cavity outlet 30 is arranged at the lower part of the side wall of the conveying cavity 6; a conveying cavity outlet baffle 31 is arranged at the conveying cavity outlet 30; the inner wall of the conveying cavity 6 is provided with an insulating layer 16.

The movable equipment comprises a heat transport vehicle 9; the top end of the side wall at the tail part of the storage cavity 10 is provided with a conveying unit inlet 32; a conveying unit inlet baffle 33 is arranged at the conveying unit inlet 32; a conveying unit outlet 34 is formed at the bottom end of the side wall at the tail part of the storage cavity 10; a conveying unit outlet baffle 35 is arranged at the conveying unit outlet 34; the inner wall of the storage cavity 10 is provided with a heat-insulating layer 16;

a conveying unit inner baffle 36 is arranged between the inner wall of the storage cavity 10 at the upper part of the conveying unit outlet 34 and the heat-insulating layer 16; the two side walls in the storage cavity 10, which are adjacent to the side wall provided with the conveying unit inlet 32, are symmetrically provided with long-strip-shaped flat plate structure rails 19, and the symmetrically provided rails 19 are specified to be 1 group; 6 sets of rails 19 are provided in the height direction of the storage chamber 10; each group of tracks 19 is inclined downwards, the downward inclination directions are consistent, and the inclination angles are all 6 degrees; the two adjacent groups of tracks 19 are arranged in a staggered way to form a serpentine channel for the heat storage rods 4 to pass through.

And the inner walls of the outlet airflow cavity 7 of the heat release unit 3 and the second heat exchange cavity 11 are both provided with an insulating layer 16. A partition plate 37 is arranged in the second heat exchange cavity 11; the partition plate 37 is a vertical partition plate arranged in the middle of the top end of the second heat exchange cavity 11, and divides the interior of the second heat exchange cavity 11 into a U-shaped cavity; a U-shaped pipe 38 penetrating through the top end of the second heat exchange cavity 11 is arranged in the U-shaped cavity;

the top end of the side wall of the second heat exchange cavity 11 close to one side of the first heat exchange cavity 5 is communicated with the outlet airflow cavity 7; the top end of the side wall of the second heat exchange cavity 11 far away from the first heat exchange cavity 5 is provided with a heat release unit gas outlet 39; a heat-releasing unit outlet baffle 40 is disposed adjacent the heat-releasing unit gas outlet 39.

The heat storage rod 4 comprises rolling ends 41 symmetrically arranged at two ends and necking sections 42 connected with the rolling ends 41; the diameter of the rolling end 41 is 0.5 times of the maximum diameter of the heat storage rod 4; the axial length of the rolling end 41 is equal to the width of the track 19; an annular groove 43 is arranged between the necking sections 42 at the two ends of the heat storage rod 4; the width and depth of two adjacent annular grooves 43 are not equal; the heat storage material 46 filled in the heat storage rod 4 is paraffin.

The operation method of the mobile energy storage mobile device comprises the following steps:

(1) filling a heat storage rod 4 into a first heat exchange cavity 5 of the heat storage unit 1; gas at 1100 ℃ from an industrial system enters the first heat exchange cavity 5 through the inlet airflow cavity 8 of the heat storage unit 1 to exchange heat with the heat storage rod 4, and the gas after heat exchange is discharged through the outlet airflow cavity 7 of the heat storage unit 1;

(2) conveying the heat storage rod 4 subjected to heat exchange in the step (1) into a storage cavity 10 of a heat conveying vehicle 9 through a conveying cavity 6 of the heat storage unit 1, wherein the unloading process of the heat storage rod 4 in the heat storage unit 1 is shown in fig. 12; then transported to the heat release unit 3 by the heat transport vehicle 9;

(3) the heat storage rods 4 in the storage cavity 10 are conveyed into the first heat exchange cavity 5 of the heat release unit 3 through the conveying cavity 6 of the heat release unit 3, wherein the process of loading the heat release unit 3 with the heat storage rods 4 is shown in FIG. 13;

air with the temperature of 10 ℃ enters the first heat exchange cavity 5 through the inlet airflow cavity 8 of the heat release unit 3 and exchanges heat with the heat storage rod 4 for the first time; the temperature of the air after heat exchange is raised to 380 ℃, then the air enters the second heat exchange cavity 11 through the outlet airflow cavity 7 of the heat release unit 3 to perform secondary heat exchange with cold water in the U-shaped pipe 38, and the air after secondary heat exchange is discharged through the gas outlet 39 of the heat release unit;

(4) the heat storage rod 4 subjected to the primary heat exchange in the step (3) is transported back to the storage cavity 10 of the heat transport vehicle 9 through the transport cavity 6 of the heat release unit 3, wherein the unloading process of the heat storage rod 4 in the heat release unit 3 is shown in fig. 14; then, the heat storage rod 4 is transported back to the heat storage unit 1 by the heat transport vehicle 9 to perform the heat storage operation of step (1), so as to realize a cycle, wherein the process of loading the heat storage rod 4 into the heat storage unit 1 is shown in fig. 15.

Example 2:

the embodiment provides a long-distance mobile energy storage system with a heat storage rod and an operation method thereof, and the mobile energy storage system is different from the mobile energy storage system in embodiment 1 in that:

the inclination angles of the upper lifting plate 18 and the lower lifting plate 22 of the heat storage unit 1 and the heat release unit 3 are both 2 degrees, and the inclination angles of all the rails 19 are also 2 degrees;

the diameter of the rolling end 41 is 0.8 times of the maximum diameter of the heat storage rod 4;

and thirdly, an axial rib plate 44 is arranged inside the heat storage rod 4, and the radial section of the position of the maximum diameter of the heat storage rod 4 is shown in figure 6.

The operating method is referred to the operating method in example 1, with the difference that: the temperature of the industrial gas in the step (1) is 600 ℃; in the step (3), 30 ℃ air is adopted for primary heat exchange, and the temperature of the air after the primary heat exchange reaches 300 ℃.

Example 3:

the embodiment provides a long-distance mobile energy storage system with a heat storage rod and an operation method thereof, and the mobile energy storage system is different from the mobile energy storage system in embodiment 1 in that:

the inclination angles of the upper lifting plate 18 and the lower lifting plate 22 of the heat storage unit 1 and the heat release unit 3 are both 8 degrees, and the inclination angles of all the rails 19 are also 8 degrees;

the diameter of the rolling end 41 is 0.6 times of the maximum diameter of the heat storage rod 4;

and thirdly, a radial rib plate 45 is arranged inside the heat storage rod 4, and the radial section of the position with the largest diameter of the heat storage rod 4 is shown in figure 7.

The operating method is referred to the operating method in example 1, with the difference that: the temperature of the industrial gas in the step (1) is 800 ℃; in the step (3), air at minus 10 ℃ is adopted for primary heat exchange, and the temperature of the air after the primary heat exchange reaches 380 ℃.

Example 4:

the embodiment provides a long-distance mobile energy storage system with a heat storage rod and an operation method thereof, and the mobile energy storage system is as follows, with reference to the mobile energy storage system in embodiment 1, and the difference is only that: and no annular groove 43 is arranged between the necking sections 42 at the two ends of the heat storage rod 4.

The operating method is referred to the operating method in example 1, with the difference that: and (4) raising the temperature of the air subjected to the primary heat exchange in the step (3) to 100 ℃.

The heat storage rod in the embodiment is not provided with the annular groove, so that the heat exchange efficiency is low.

Example 5:

the embodiment provides a long-distance mobile energy storage system with a heat storage rod and an operation method thereof, and the mobile energy storage system is as follows, with reference to the mobile energy storage system in embodiment 1, and the difference is only that: the annular grooves 43 between the necking sections 42 at the two ends of the heat storage rod 4 are uniformly distributed, and all the annular grooves 43 have the same width and the same depth.

The operating method is referred to the operating method in example 1, with the difference that: and (4) raising the temperature of the air subjected to the primary heat exchange in the step (3) to 200 ℃.

The homogenization setting of annular groove in this embodiment leads to heat exchange efficiency to be lower.

It can be seen from the above embodiments that the mobile energy storage system of the invention adopts the heat storage rod as the heat storage element, and the waiting time of the conveying unit in the processes of heat charging and heat releasing is greatly reduced by flexibly loading and unloading the heat storage rod among the heat storage unit, the conveying unit and the heat releasing unit; the mobile energy storage system adopts cylindrical heat storage rods with rolling advantages and obliquely arranged rails, each heat storage rod freely falls along the rails by means of the gravity effect, the heat storage rods are rapidly and orderly filled into the heat storage units, the conveying units and the heat release units, and the heat storage and release efficiency of the mobile heat storage system is further improved; the mobile energy storage system comprehensively optimizes the structure of the energy storage system, effectively improves the daily storage and heat release circulation efficiency of the mobile heat storage system, reduces the comprehensive operation cost, and has better industrial application prospect.

The applicant states that the present invention is illustrated by the above embodiments, but the present invention is not limited to the above systems and detailed methods, i.e. it is not meant that the present invention must rely on the above systems and detailed methods for implementation. It will be apparent to those skilled in the art that any modifications to the present invention, equivalents thereof, additions of additional operations, selection of specific ways, etc., are within the scope and disclosure of the present invention.