Integrated energy storage and heat exchange gas storage device

Abstract

The present invention discloses an integrated gas storage and heat exchange gas storage device, which includes a housing provided with a gas inlet and a gas outlet. An inner part of the housing forms a gas storage cavity for storing gas, and a wall temperature protection module and a heat storage and heat exchange module are arranged in the gas storage cavity; the wall temperature protection module is arranged along an inner wall surface of the housing, and the heat storage and heat exchange module covers an inner port of the gas outlet; the heat storage and heat exchange module and / or the wall temperature protection module is a three-dimensional network structure composed of filamentous metals, and channels for storing gas and forming gas flow are arranged inside. During operation, the device can achieve instant response, supply a large amount of gas with very little temperature change in a short time, and achieve constant temperature gas supply. When there are temperature fluctuations and flow pulsations in the gas source, it can compensate for temperature changes and suppress flow pulsations. Moreover, all the above heat exchange processes can occur spontaneously without an additional control system, and the system structure is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage, and particularly to a gas storage device integrating heat storage and heat exchange. Background Art

[0002] At present, clean energy power generation such as solar power generation, wind power generation, and hydropower generation has developed rapidly. The above-mentioned clean energy power generation is affected by seasons, climate, and weather. Especially solar power generation and wind power generation are characterized by strong volatility and drastic load changes. With the increasing proportion of their power generation, this characteristic will have a more obvious impact on the power grid load.

[0003] Conventional power generation technologies generate high-temperature and high-pressure superheated steam by burning fossil energy and enter a steam turbine to drive a generator to generate electricity. For example, coal-fired power generation technology generally operates under a relatively stable load and has a poor ability to quickly increase the load. Currently, the load change rate of coal-fired units is 1.5%-2.0%Pe / min.

[0004] High-efficiency and flexible coal-fired power generation technology is a forward-looking coal-fired power generation technology, which can solve the problems of spatio-temporal instability caused by weather, climate, etc. in the increasing solar power generation, wind power generation, and hydropower generation, absorb their grid-connected power, and increase the high-proportion access of renewable energy.

[0005] The molten salt steam generation system is one of the core components of high-efficiency and flexible coal-fired power generation technology. The superheated steam generated by it with a superheat degree exceeding 100°C enters the steam turbine to do work and generate electricity, improving the rapid load increase ability of the unit. The process has the characteristics of short time (in minutes) and fast load change (load change rate > 20% / min), and is a steam generation process that requires instant response and strong transient changes.

[0006] When the molten salt steam generation system generates steam, it is affected by factors such as the start-up and switching response time of pumps and valves, the heat transfer delay of metals, heat transfer characteristics, and liquid level fluctuations, and there will be phenomena such as time delay, insufficient steam generation, temperature fluctuations, and flow pulsations, which are contradictory to the actual system requirements.

[0007] In this regard, a steam storage device can be set between the molten salt steam generation system and the steam turbine. When there is a time delay in quickly increasing the load or reaching the peak load and insufficient steam generation, the gas storage device can directly supply the superheated steam stored in it to solve the above problems.

[0008] However, the steam supplied by traditional gas storage devices only has sufficient superheat degree in the initial stage. In the subsequent stage, the steam temperature will gradually decrease, and during the entire process of external steam supply, constant-temperature steam supply cannot be achieved, and it is difficult to be at the same temperature level as the steam generated by the molten salt steam generation system. In addition, when the steam generated by the steam generation system shows temperature fluctuations and flow pulsations with load changes, the gas storage device cannot suppress the temperature fluctuations and flow pulsations. Summary of the Invention

[0009] The object of the present invention is to provide an integrated gas storage and heat exchange gas storage device to solve the above technical problems.

[0010] To achieve the above object, the integrated gas storage and heat exchange gas storage device provided by the present invention includes a housing provided with a gas inlet and a gas outlet. A gas storage cavity for storing gas is formed inside the housing. A wall temperature protection module and a heat exchange module are arranged in the gas storage cavity. The wall temperature protection module is arranged along the inner wall surface of the housing, and the heat exchange module covers the inner port of the gas outlet. The heat exchange module and / or the wall temperature protection module is a three-dimensional network structure composed of filamentous metal, and has channels inside for storing gas and forming gas flow.

[0011] Optionally, the porosity ε of the heat exchange module and / or the wall temperature protection module is ≥0.9.

[0012] Optionally, a gas space is left between the inner port of the gas outlet and the heat exchange module. The gas discharged from the gas storage cavity first converges in the gas space after passing through the heat exchange module, and then enters the gas outlet.

[0013] Optionally, the housing includes a first head, a second head and a cylinder body, and the first head and the second head are respectively located at both ends of the cylinder body.

[0014] Optionally, the gas outlet and the gas inlet are respectively arranged on the first head and the second head. The heat exchange module is arranged closely against the inner port of the gas outlet and fills the gas flow cross-section of the gas storage cavity.

[0015] Optionally, the gas inlet can also be located on the side wall of the cylinder body and is arranged far away from the gas outlet. An anti-impact baffle corresponding to the inner port of the gas inlet is arranged in the gas storage cavity.

[0016] Optionally, the gas outlet can also be located on the side wall of the cylinder body and is arranged far away from the gas inlet.

[0017] Optionally, both the gas inlet and the gas outlet can be located on the side wall of the cylinder body and are arranged oppositely. An anti-impact baffle corresponding to the inner port of the gas inlet is arranged in the gas storage cavity.

[0018] Optionally, the heat exchange module and the wall temperature protection module are fixed by screws and nuts. One end of the screw is welded to the inner wall of the housing, and the other end of the screw passes through the heat exchange module and the wall temperature protection module and is fixed by the nut through threaded connection.

[0019] Optionally, a pressure relief plate and a gasket are provided between the nut, the heat storage and heat exchange module, and the wall temperature protection module.

[0020] Optionally, the heat storage and heat exchange module and the wall temperature protection module are arranged in a short - circuit prevention structure that prevents the occurrence of through - seams.

[0021] Optionally, a heat insulation structure is provided on the outside of the housing.

[0022] Optionally, fixed supports and sliding supports are provided on the outside of the housing.

[0023] Optionally, the housing is provided with an accessory system, and the accessory system includes a safety valve, a vent valve, a drain valve, a remote - transmission pressure gauge, and a remote - transmission temperature gauge provided on the housing.

[0024] The integrated heat storage and gas storage device provided by the present invention at least has a gas - discharging condition, a gas - filling condition, and a condition of gas - filling and gas - discharging simultaneously, which will be described separately below.

[0025] Under the gas - filling condition, high - temperature and high - pressure gas enters the device from the gas inlet, increasing the pressure and temperature of the internal gas. It exchanges heat with the low - temperature heat storage and heat exchange module and the wall temperature protection module to increase their temperatures, and at the same time prevents the device from being damaged due to over - temperature.

[0026] Under the gas - discharging condition, the internally depressurized and cooled gas flows through the heat storage and heat exchange module for convective heat exchange. After the gas temperature rises, it flows out from the gas outlet to achieve constant - temperature external supply. At the same time, the gas at the wall surface exchanges heat with the wall temperature protection module arranged near it, and the temperature only changes slightly, avoiding large thermal stresses generated in the housing due to temperature changes.

[0027] Under the condition of gas - filling and gas - discharging simultaneously, gas with continuously fluctuating temperature or pulsating flow enters the device from the gas inlet. When flowing through the heat storage and heat exchange module, the gas with fluctuating temperature exchanges heat with the heat storage and heat exchange module due to the temperature difference. After heat exchange, the gas with stable temperature flows out from the gas outlet to achieve constant - temperature external supply. The gas with pulsating flow is broken and homogenized by the filamentous metal and its gaps in the heat storage and heat exchange module, and finally the gas with stable flow flows out from the gas outlet for external supply.

[0028] Through the above analysis, it can be seen that the present invention can achieve instant response during operation, supply a large amount of gas with very small temperature changes in a short time to achieve constant - temperature gas supply. When the temperature of the steam source fluctuates and the flow pulsates, it can compensate for the temperature change and suppress the flow pulsation. Moreover, all the above heat - exchange processes can occur spontaneously without an additional control system, and the system structure is simple. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the first integrated heat storage and gas storage device provided by the embodiment of the present invention;

[0030] Figure 2 For Figure 1 the A-A view of the integrated energy storage and heat exchange gas storage device shown;

[0031] Figure 3 is a schematic structural diagram of the integrated energy storage and heat exchange module and the wall temperature protection module fixed by screws and nuts;

[0032] Figure 4 is a partial structural schematic diagram of the pressure reducing plate;

[0033] Figure 5 is a schematic diagram of the heating process in which low-temperature gas becomes high-temperature gas after flowing through a three-dimensional network structure composed of filamentous metal;

[0034] Figure 6 is a schematic diagram of heat exchange between a three-dimensional network structure composed of filamentous metal and gas;

[0035] Figure 7 is a schematic structural diagram of the second integrated energy storage and heat exchange gas storage device provided by an embodiment of the present invention;

[0036] Figure 8 is a schematic structural diagram of the third integrated energy storage and heat exchange gas storage device provided by an embodiment of the present invention;

[0037] Figure 9 is a schematic structural diagram of the fourth integrated energy storage and heat exchange gas storage device provided by an embodiment of the present invention;

[0038] Figure 10 is a schematic structural diagram of the fifth integrated energy storage and heat exchange gas storage device provided by an embodiment of the present invention.

[0039] In the figure:

[0040] 1. First head 2. Cylinder 3. Second head 4. Gas outlet 5. Gas inlet 6. Manhole 7. Fixed support 8. Sliding support 9. Integrated energy storage and heat exchange module 10. Wall temperature protection module 11. Screw 12. Nut 13. Gasket 14. Pressure reducing plate 15. Thermal insulation structure 16. Safety valve 17. Vent valve 18. Drain valve 19. Remote pressure gauge 20. Remote temperature gauge 21. Impact baffle. Detailed implementation manners

[0041] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0042] In this text, terms such as "upper, lower, inner, outer" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they should not be understood as absolute limitations on the protection scope. Moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any actual relationship or order between these components.

[0043] Please refer to Figures 1 to 4 , Figure 1 which is a schematic structural view of the first integrated heat storage and heat exchange gas storage device provided by an embodiment of the present invention; Figure 2 is Figure 1 the A-A view of the shown integrated heat storage and heat exchange gas storage device; Figure 3 is a schematic structural view of the heat storage and heat exchange module and the wall temperature protection module fixed by screws and nuts; Figure 4 is a partial structural view of the pressure relief plate.

[0044] As shown in the figure, in a specific embodiment, the integrated heat storage and heat exchange gas storage device provided by the present invention mainly consists of a housing, a heat storage and heat exchange module 9, a wall temperature protection module 10, a thermal insulation structure 15, and an auxiliary system, etc.

[0045] In this embodiment, the housing is a horizontal container structure, mainly composed of a first head 1, a cylinder 2, and a second head 3, etc. The first head 1 and the second head 3 are respectively located at the left end and the right end of the cylinder 2, forming a gas storage cavity inside. A gas inlet 5 is machined along the axial direction on the second head 3, and a gas outlet 4 is machined along the axial direction on the first head 2. The gas inlet 5 and the gas outlet 4 are the channels for gas to enter and exit. A manhole 6 is located on the side wall of the cylinder 2, constituting an entrance for personnel installation and maintenance. A fixed support 7 is installed on the left side of the cylinder 2, playing a role in fixing and supporting the equipment. A sliding support 8 is installed on the right side of the cylinder 2, which can ensure that the equipment can slide along the axial direction when heated, playing a role in supporting the equipment and absorbing thermal displacement.

[0046] The heat storage and heat exchange module 9 with a thickness b is arranged closely against the inner port of the gas outlet 4 and fills the entire flow cross-section of the cylinder 2. The value of the thickness b of the heat storage and heat exchange module 9 can be determined according to the heat storage requirement. Since it only occupies a small space inside the device, it can ensure the gas storage capacity.

[0047] When the cooling air flow or the gas with temperature fluctuations flows through the heat storage and heat exchange module 9, after heat exchange with it, it directly flows out of the device, avoiding secondary expansion and cooling, etc., and realizing the functions of constant-temperature gas supply and suppressing temperature fluctuations; in addition, after the air flow enters from the gas inlet 5, it is a free submerged jet, and the heat storage and heat exchange module 9 is arranged far from the gas inlet 5, so that the air flow velocity entering the heat storage and heat exchange module 9 is as small as possible, reducing the erosion of the components by the air flow and also reducing the resistance in the flow process.

[0048] The heat storage and heat exchange module 9 leaves a cylindrical gas space at the position corresponding to the inner port of the gas outlet 4. After the gas discharged from the gas storage cavity passes through the heat storage and heat exchange module 9, it first converges in the gas space and then enters the gas outlet 4. The flow velocity in this area is relatively large, and the cylindrical width a and diameter dg can be determined according to the air flow velocity distribution, reducing the air flow resistance on the one hand and reducing the erosion effect of the air flow on the heat storage and heat exchange module 9 on the other hand.

[0049] The wall temperature protection module 10 is arranged closely against the inner wall surfaces of the first head 1, the cylinder 2, and the second head 3. When the internal gas temperature changes violently due to rapid charging and discharging of gas, it can compensate for the temperature change, reduce the temperature change rate and thermal stress at the inner wall surface, and its thickness c can be determined according to the temperature change rate.

[0050] The heat storage and heat exchange module 9 and the wall temperature protection module 10 together constitute a heat storage and heat exchange functional component, and their arrangement method occupies as little space inside the device shell as possible to ensure that the effective available volume of the device is as large as possible, but at the same time does not affect the functions of constant-temperature gas supply and suppressing temperature fluctuations during gas discharge; during the rapid charging and discharging process, the gas temperature will rise or fall sharply. The heat storage and heat exchange functional component is arranged against the wall, which can reduce the temperature change rate of the inner wall surface of the shell and the thermal stress generated by it, and ensure the safety of the equipment; during the process of charging and discharging simultaneously, a large flow of air enters from the inlet, and the flow velocity is relatively large. By reasonable arrangement, the impact of the air flow on the component can be avoided as much as possible, the flow velocity can be reduced, and the resistance loss can be reduced.

[0051] Specifically, the heat storage and heat exchange module 9 and the wall temperature protection module 10 can be fixed by screws and nuts. One end of the screw 11 is welded to the inner wall of the shell, and the other end of the screw 11 passes through the corresponding heat storage and heat exchange module 9 and wall temperature protection module 10 and is fixed by the nut 12 through threaded connection, which is convenient for installation, disassembly and maintenance. A gasket 13 and a pressure relief plate 14 are arranged between the nut 12 and the heat storage and heat exchange module 9 and the wall temperature protection module 10. The pressure relief plate 14 has a relatively large area, which can prevent the nut 12 from crushing the heat storage and heat exchange module 9 and the wall temperature protection module 10.

[0052] When the heat storage and heat exchange module 9 and the wall temperature protection module 10 are arranged, a method of preventing continuous seams is adopted to avoid short-circuiting of the gas flow and failure to play a heating role. In this embodiment, it is a staggered arrangement structure, or it can be an integral arrangement structure, or a loop mechanical seal arrangement structure, or other arrangement structures.

[0053] When the gas temperature inside the gas storage device is higher than the ambient temperature, heat insulation materials should also be provided outside the device shell to minimize heat loss as much as possible.

[0054] Specifically, the heat insulation structure 15 is installed outside the shell. The heat insulation structure 15 can be composed of heat insulation materials, outer protection plates and support and fixing structures. The heat insulation materials can be heat insulation materials such as rock wool, aluminum silicate, and aerogel, which play a role in reducing heat dissipation loss. The heat insulation materials have a certain thickness, which is determined according to the amount of heat dissipation and the temperature reduction value.

[0055] To ensure the safe and reliable operation of the equipment, an auxiliary system is also provided. The main components constituting the auxiliary system are a safety valve 16, a vent valve 17, a drain valve 18, a remote pressure gauge 19, a remote temperature gauge 20, etc. Among them, the safety valve 16 is installed on the upper part of the cylinder body 2, which plays a role in overpressure protection during equipment operation and ensures the safe operation of the equipment; the vent valve 17 is installed on the upper part of the cylinder body 2, which plays a role in venting the air and protective gases in the equipment; the drain valve 18 is installed on the lower part of the cylinder body 2, which plays a role in draining the liquid in the device; the remote pressure gauge 19 is installed on the cylinder body 2, which plays a role in monitoring the gas pressure; the remote temperature gauge 20 is installed on the cylinder body 2, which plays a role in monitoring the temperature of the gas and the heat storage material area.

[0056] Please refer to Figure 5 、 Figure 6 , Figure 5 is a schematic diagram of the heating process in which low-temperature gas becomes high-temperature gas after flowing through a three-dimensional network structure composed of filamentous metal; Figure 6 is a schematic diagram of heat exchange between a three-dimensional network structure composed of filamentous metal and gas.

[0057] As shown in the figure, the heat storage and heat exchange module 9 and the wall temperature protection module 10 are three-dimensional network structures composed of filamentous metal, the volume occupied by the pores is greater than 0.9 of the total volume, and channels for storing gas and forming gas flow are formed inside.

[0058] Taking the cubic network structure as an example, the equivalent diameter d of the filamentous metal and the equivalent spacing L between the filamentous metals should satisfy L≥5d and L≤5mm. On the one hand, it ensures that the unit has a sufficiently large specific surface area to guarantee a sufficiently large heat transfer amount. When the air flow passes between the filamentous metals, heat exchange can be quickly completed by means of heat convection. On the other hand, sufficient gaps can ensure that more gas can be stored and the resistance when the air flow passes through can be reduced. The pulsating air flow will be broken and homogenized after entering the filamentous network structure and flow out with a relatively stable flow rate. Through the layout structure of the heat storage and heat exchange module 9 or the wall temperature protection module 10 and the filamentous network structure of the unit, finally, the ratio of the effectively utilized volume to the total volume of the gas storage device, that is, the effective volume coefficient ≥0.95, is achieved. The space utilization rate is extremely high, and a large amount of gas can be effectively stored. Figure 6 The basic unit of the three-dimensional network structure composed of the shown filamentous metals can be a hexahedron, or can be polyhedron basic units such as an octahedron or a tetradecahedron.

[0059] The unit body constituting the heat storage and heat exchange module 9 or the wall temperature protection module 10 should have a sufficiently large specific surface area and pores to ensure a sufficiently large heat transfer amount, quickly complete the heat exchange process with the gas, and reduce the resistance loss. The material should be a material with a large heat storage density and have a certain strength to store more heat with a relatively small volume as much as possible. The unit body of the heat storage and heat exchange functional component adopts a filamentous network structure, which is composed of filamentous metals to form a three-dimensional network structure, has a sufficiently large specific surface area, and directly contacts with heat convection as the main heat transfer method to ensure a sufficiently large heat transfer amount to quickly heat the gas to the required temperature when supplying gas; the heat storage density of the metal material is large and the strength is relatively high; there is a sufficiently large gap between the filamentous metals to ensure that the effectively utilized space or the effective volume coefficient of the container is sufficiently large to store more gas, so as to quickly supply a large amount of gas, and at the same time, the pressure loss is relatively small.

[0060] The metal can be composed of ferrous metals or non-ferrous metals such as Fe, Cu, Al, Ni, Cr, etc., or can be their alloys or other non-metallic solid heat storage materials; the cross-sectional shape of the filamentous metal can be circular, or can be square, or other polygons and irregular shapes. The connection between the filamentous metals can be integrally formed, or can be welded, lapped or even not connected. The gap shape between the filamentous metals can be square, circular, polygonal or irregular.

[0061] When the filamentous metals form the heat storage and heat exchange module 9 and the wall temperature protection module 10, it can be formed at one time, or can be formed into sheets, plates or blocks and then assembled and formed.

[0062] During inflation, the air flow enters from the gas inlet 5 and enters the cylinder 2 in the form of a free submerged jet. The velocity gradually decreases and shows a conical diffusion trend. Most of the air flow will first enter the storage heat exchange module 9. As the gas enters, the temperature of the gas in the device shows an upward trend. The surplus heat of the gas in the storage heat exchange module 9 and the wall temperature protection module 10 will be absorbed by the filamentous metal in the filamentous network structure. On the one hand, the heat storage process is completed, and on the other hand, it ensures that the temperature only changes slightly to guarantee the safety of the equipment. When the pressure reaches the set pressure, the inflation process ends. Since the gas temperature in the area without the filamentous network structure in the device is higher than that in the area with the filamentous network structure, convection and heat conduction will occur inside and finally tend to temperature uniformity. During this process, due to the large heat storage density of the filamentous network structure, the temperature change in the filamentous network structure area is relatively small.

[0063] During deflation, the air flow flows out from the gas outlet 4. The temperature of the gas in the area without the filamentous network structure in the device shows a downward trend due to pressure reduction and expansion. The cooled gas is heated after flowing through the storage heat exchange module 9. Since the filamentous network structure has a large heat storage density, a large specific surface area, a large heat transfer amount, and a fast heating speed, the temperature only changes slightly to ensure that the gas flows out at the same temperature as the storage heat exchange module 9, realizing the process of rapid constant-temperature gas supply. When a sufficient amount of gas is supplied or the pressure reaches the set value, the deflation process ends. At this time, the gas temperature in the area without the filamentous network structure in the device is lower than that in the area with the filamentous network structure, and convection and heat conduction will occur inside and finally tend to temperature uniformity. During this process, due to the large heat storage density of the filamentous network structure, the temperature change in the filamentous network structure area is relatively small.

[0064] During simultaneous inflation and deflation, the air flow enters from the gas inlet, enters the cylinder 2 in the form of a free submerged jet, and flows out from the gas outlet 4 after passing through the storage heat exchange module 9. During this process, the gas temperature in the device changes relatively small. When the temperature of the gas source fluctuates, the gas with continuously changing temperature will exchange heat with the storage heat exchange module 9 due to the temperature difference between them and is quickly heated to the same temperature as it and then flows out, realizing the function of suppressing temperature fluctuations. When there is a flow pulsation in the gas source, the gas with flow pulsation enters the cylinder and shows a pulsation attenuation due to the decrease in speed and the diffusion trend to the surrounding. When it enters the storage heat exchange module 9, it will be broken and homogenized by the filamentous network structure and finally flow out in a stable state, realizing the function of suppressing flow pulsation.

[0065] That is to say, during inflation, compression heat is generated as the pressure rises, and the gas temperature tends to increase. The excess heat is absorbed by the heat storage and heat exchange module 9 and the wall temperature protection module 10 to keep the gas temperature and the equipment temperature from exceeding the temperature limit. At the same time, it also ensures that the stored gas has sufficient superheat. During deflation, as the pressure decreases and the gas expands and cools, the gas temperature tends to decrease. The cooled gas flows through the heat storage and heat exchange module 9 arranged near the gas outlet 4 and exchanges convective heat with it. Since the heat storage density of the metal is high, only a very small temperature reduction is required to ensure the heat required for gas heating, ensuring that the gas is supplied at a constant temperature. The heated gas is supplied to the outside almost at the same temperature as the heat storage and heat exchange module 9, maintaining a stable temperature gas output. When the gas near the inner wall of the shell shows a temperature decrease trend due to expansion and cooling, it will also exchange heat with the wall temperature protection module 10 arranged near it, and the temperature will only change slightly, avoiding large thermal stress in the shell due to temperature change. During the process of inflation and deflation, when the gas source has a temperature fluctuation, the gas with temperature fluctuation exchanges heat with the heat storage and heat exchange module 9 due to the temperature difference to compensate for the temperature change and suppress the temperature fluctuation. When the gas source has a flow pulsation, the pulsating air flow enters the large space of the shell of the device. On the one hand, the pulsation will decay due to the reduction in speed and the action of the viscous force between the gases. On the other hand, after entering the heat storage and heat exchange module 9, it is broken and homogenized by the network structure and finally flows out at a stable flow rate, suppressing the flow pulsation.

[0066] Please continue to refer to Figure 7 , Figure 7 which is a schematic structural diagram of the second integrated heat storage and heat exchange gas storage device provided by the embodiment of the present invention.

[0067] As shown in the figure, compared with the first embodiment, the difference in this embodiment is that: the gas inlet 5 in this embodiment is located on the cylinder body 2 and is arranged far away from the gas outlet 4 so that the air flow decelerates before entering the heat storage and heat exchange module 9.

[0068] To avoid the impact of the air flow on the wall temperature protection module 10 in the direction of the gas inlet 5, an anti-impact baffle 21 is arranged at a certain distance above the gas inlet 5. During inflation, the air flow enters from the gas inlet 5, encounters the anti-impact baffle 21 and then diverges and diffuses in all directions to decelerate.

[0069] When the gas inlet 5 is located directly below the cylinder body 2, the drain valve 18 can be cancelled. When the gas inlet 5 is located directly above the cylinder body 2, the vent valve 17 can be cancelled.

[0070] In this embodiment, the same parts as in the first embodiment are given the same reference numerals and the same textual descriptions are omitted.

[0071] Please then refer to Figure 8 , Figure 8 which is a schematic structural diagram of the third integrated heat storage and heat exchange gas storage device provided by the embodiment of the present invention.

[0072] As shown in the figure, compared with the first embodiment, the difference in this embodiment is that the gas outlet 4 is located on the cylinder body 2 and is arranged away from the gas inlet 5, so that the air flow decelerates and then enters the storage heat exchange module 9.

[0073] The storage heat exchange module 9 is arranged close to the gas outlet 4. The thickness b can be determined according to the heat required by the process and the allowable temperature drop. There is a gas space on the side close to the gas outlet 4, with a height of a and an equivalent diameter of dg, which can be determined according to the velocity field distribution, so that the air flow velocity in the storage heat exchange module 9 is as small as possible while ensuring the external gas supply temperature.

[0074] When the gas outlet 4 is located directly below the cylinder body 2, the drain valve 18 can be cancelled. When the gas outlet 4 is located directly above the cylinder body 2, the vent valve 17 can be cancelled.

[0075] In this embodiment, the parts that are the same as those in the first embodiment are given the same reference numerals, and the same textual descriptions are omitted.

[0076] Please refer to Figure 9 , Figure 9 which is a schematic structural diagram of the fourth integrated storage and heat exchange gas storage device provided by the embodiment of the present invention.

[0077] As shown in the figure, compared with the first embodiment, the difference in this embodiment is that both the gas inlet 5 and the gas outlet 4 are installed on the cylinder body 2 and are arranged opposite to each other.

[0078] The storage heat exchange module 9 is arranged close to the gas outlet 4. The thickness b can be determined according to the heat required by the process and the allowable temperature drop. There is a gas space on the side close to the gas outlet 4, with a height of a and an equivalent diameter of dg, which can be determined according to the velocity field distribution, so that the air flow velocity in the storage heat exchange module 9 is as small as possible while ensuring the external gas supply temperature.

[0079] To avoid the impact of the air flow on the storage heat exchange module 9 in the direction of the gas inlet 5, an impact prevention baffle 21 is arranged at a certain distance above the gas inlet 5. When inflating, the air flow enters from the gas inlet 5, and after encountering the impact prevention baffle 21, it is diverted and diffused in all directions to decelerate.

[0080] When the gas inlet 5 and the gas outlet 4 are located directly below and above the cylinder body 2, the drain valve 18 and the vent valve 17 can be cancelled.

[0081] In this embodiment, the parts that are the same as those in the first embodiment are given the same reference numerals, and the same textual descriptions are omitted.

[0082] Please refer to Figure 10 , Figure 10 which is a schematic structural diagram of the fifth integrated storage and heat exchange gas storage device provided by the embodiment of the present invention.

[0083] As shown in the figure, compared with the first, second, third, and fourth embodiments, the difference in this embodiment is that: the housing is a vertical container structure, the first head 1 is located at the upper end of the cylinder 2, the second head 3 is located at the lower end of the cylinder 1, the gas inlet 5 is located on the second head 3, the gas outlet 4 is located on the first head 1, the safety valve 16 is installed on the first head 1, and the support is only the fixed support 7.

[0084] The storage and heat exchange module 9 is arranged closely to the gas outlet 4. The thickness b can be determined according to the heat required in the process and the allowable temperature drop. A gas space is left on the side close to the gas outlet 4, with a height of a and an equivalent diameter of dg, which can be determined according to the velocity field distribution, so as to minimize the gas flow velocity in the storage and heat exchange module 9 while ensuring the external gas supply temperature.

[0085] Since the housing is a vertical container structure, as long as there is a nozzle on the first head 1, whether it is provided with a gas outlet 4 or a gas inlet 5, the vent valve 17 can be cancelled. Similarly, as long as there is a nozzle on the second head 3, whether it is provided with a gas inlet 5 or a gas outlet 4, the drain valve 18 can be cancelled.

[0086] In this embodiment, the parts that are the same as those in the first embodiment are given the same reference numerals and the same textual descriptions are omitted.

[0087] The above embodiments are only the preferred solutions of the present invention, and are not specifically limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation manners. For example, the housing can be horizontal or vertical; the shape of the housing can be cylindrical or spherical; the gas can be gaseous gases such as steam, air, carbon dioxide, nitrogen, oxygen, hydrogen, etc., or supercritical fluids, etc. Since there are many possible implementation manners, they will not be listed one by one here.

[0088] This device has the following advantages:

[0089] 1) It can achieve instant response gas supply. The gas can be directly stored in the housing of the gas storage device without additional equipment and processes, and can immediately supply gas externally when the command is issued to achieve instant response gas supply.

[0090] 2) It is equipped with an internal storage and heat exchange module and a wall protection module, and can quickly perform constant-temperature gas charging and discharging, and the device is safe and reliable.

[0091] 3) It has temperature compensation and flow rate homogenization functions, and can suppress temperature fluctuations and flow rate pulsations.

[0092] 4) It adopts a filamentous network structure, with fast heat transfer, small resistance, and small occupied space.

[0093] 5) The effective space ratio of the device for storing gas is high, and the effective volume coefficient is large.

[0094] 6) The storage and heat exchange module and the wall protection module adopt a threaded connection structure, which is convenient for installation and disassembly.

[0095] 7) One device combines the functions of gas storage, heat storage and heat exchange, without additional equipment and processes, and the system is simple.

[0096] 8) During the entire gas charging and discharging process, gas charging and discharging and heat transfer occur spontaneously without manual intervention or control. The system and control are simple, and the energy-saving and carbon-reducing effect is excellent.

[0097] The gas storage device with the above functions can not only be applied to the thermal power field for rapid load increase, but also be used in situations such as rapid peak load of power plants, industrial steam supply, and compressed air energy storage for gas medium storage and constant temperature rapid supply.

[0098] The above has introduced the integrated gas storage, heat storage and heat exchange device provided by the present invention in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A heat storage and exchange integrated gas storage device, comprising a shell provided with a gas inlet and a gas outlet, wherein a gas storage chamber for storing gas is formed inside the shell, characterized in that: A wall temperature protection module and a heat storage and exchange module are provided in the gas storage cavity; the wall temperature protection module is arranged along the inner wall surface of the shell, and the heat storage and exchange module covers the inner port of the gas outlet; the heat storage and exchange module and the wall temperature protection module are a three-dimensional network structure composed of filamentary metal, and the interior of the three-dimensional network structure has a channel for storing gas and forming gas circulation.

2. The heat storage and exchange integrated gas storage device according to claim 1, characterized in that: The porosity ε of the heat storage and exchange module and / or the wall temperature protection module is ≥ 0.

9.

3. The heat storage and exchange integrated gas storage device according to claim 2, characterized in that: A gas space is left between the inner port of the gas outlet and the heat storage and exchange module. After passing through the heat storage and exchange module, the gas discharged from the gas storage cavity is first collected in the gas space and then enters the gas outlet.

4. The heat storage and exchange integrated gas storage device according to claim 1, characterized in that: The shell includes a first end cap, a second end cap and a cylinder; the first end cap and the second end cap are respectively located at the left and right ends of the cylinder, or the first end cap and the second end cap are respectively located at the upper and lower ends of the cylinder.

5. The heat storage and exchange integrated gas storage device according to claim 4, characterized in that: The gas outlet and the gas inlet are respectively arranged at the first end cap and the second end cap, and the heat storage and exchange module is arranged close to the inner port of the gas outlet and fills the gas flow cross section of the gas storage cavity.

6. The heat storage and exchange integrated gas storage device according to claim 4, characterized in that: The gas inlet is located on the side wall of the cylinder and is arranged away from the gas outlet. An impact baffle corresponding to the inner port of the gas inlet is arranged in the gas storage cavity.

7. The heat storage and exchange integrated gas storage device according to claim 4, characterized in that: The gas outlet is located on the side wall of the cylinder and is arranged away from the gas inlet.

8. The heat storage and exchange integrated gas storage device according to claim 4, characterized in that: The gas inlet and the gas outlet are both located on the side wall of the cylinder and arranged opposite to each other, and an impact baffle corresponding to the inner port of the gas inlet is arranged in the gas storage cavity.

9. The heat storage and exchange integrated gas storage device according to claim 1, characterized in that: The heat storage and exchange module and the wall temperature protection module are fixed by screws and nuts. One end of the screw is welded to the inner wall of the shell, and the other end of the screw passes through the heat storage and exchange module and the wall temperature protection module and is fixed by the nut through threaded connection.

10. The heat storage and exchange integrated gas storage device according to claim 9, characterized in that: A pressure reducing plate and a gasket are provided between the nut and the heat storage and exchange module and the wall temperature protection module.

11. The heat storage and exchange integrated gas storage device according to claim 1, characterized in that: The heat storage and exchange module and the wall temperature protection module are arranged in an anti-short circuit structure to prevent the occurrence of through cracks.

12. The heat storage and exchange integrated gas storage device according to any one of claims 1 to 11, characterized in that: A heat preservation structure is arranged outside the shell.

13. The heat storage and exchange integrated gas storage device according to claim 12, characterized in that: A fixed support and a sliding support are arranged outside the shell.

14. The heat storage and exchange integrated gas storage device according to claim 13, characterized in that: The shell is provided with an auxiliary system, and the auxiliary system includes a safety valve, a vent valve, a drain valve, a remote pressure instrument and a remote temperature instrument arranged on the shell.

15. The heat storage and exchange integrated gas storage device according to any one of claims 1 to 11, characterized in that: The heat storage and exchange module and the wall temperature protection module are made of ferrous metal, non-ferrous metal or alloys thereof.

16. The heat storage and exchange integrated gas storage device according to claim 15, characterized in that: The cross-sectional shape of the filamentary metal is circular or square, the connection between the filamentary metals is welding, overlapping or integrated forming, and the gap shape between the filamentary metals is square or circular.

17. The heat storage and exchange integrated gas storage device according to claim 15, characterized in that: The cross-sectional shape of the filamentary metal is a polygon, the connection between the filamentary metals is welding, overlapping or integrated forming, and the gap shape between the filamentary metals is a polygon.

18. The heat storage and exchange integrated gas storage device according to claim 15, characterized in that: The cross-sectional shape of the filamentary metal is irregular, the connection between the filamentary metals is welding, overlapping or integrated forming, and the shape of the gap between the filamentary metals is irregular.

Images