Heat pipe superheated steam accumulator
Patent Information
- Application Number
- CN202621381947.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-03
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2036-09-03
AI Technical Summary
[0003]目前，传统注汽锅炉过热器普遍采用光管或简单翅片管结构，高温烟气与工质之间换热温差大、热应力集中，长期运行易出现管材蠕变、爆管等安全隐患；部分油田尝试采用烟气余热回收技术，但多为加装省煤器、空气预热器等附加设备，系统集成度低，未从根本上解决过热蒸汽蓄热调节能力不足的问题；现有的过热蒸汽蓄热器主要采用填充式显热蓄热或单一的相变蓄热结构；显热蓄热方式蓄热密度低，设备体积庞大；而单一的相变蓄热方式虽然蓄热密度有所提高，但普遍存在以下问题：其一，换热效率低，高温烟气与蓄热介质之间的热交换不充分，导致热量损失较大；其二，蓄热调节能力差，当热源波动时，难以维持稳定的蒸汽输出参数；其三，热管元件内的传热介质在长期运行后性能下降，且缺乏有效的补充调节手段，影响系统长期运行的可靠性和效率
1、本实用新型提供一种热管式过热蒸汽蓄热器，通过在蓄热罐内从下往上依次设置烟气换热区、蓄热调节区和过热蒸汽输出区，并在烟气换热区内设置带有多级导流隔板的烟气管道，延长了烟气在管道内的流动路径和停留时间，提高了烟气与重力热管蒸发段之间的换热效率，使烟气热量得到充分回收；
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Figure CN224837348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat exchange technology, and in particular to a heat pipe type superheated steam accumulator. Background Technology
[0002] Superheated steam accumulators are crucial equipment in industrial waste heat recovery, power peak shaving, and renewable energy utilization. Their core function is to convert intermittent or fluctuating thermal energy into stable and adjustable superheated steam output. With the increasing proportion of new energy power generation and the growing demand for industrial energy conservation, efficient, compact, and rapid-response thermal storage devices have become a hot topic in research and application.
[0003] Currently, traditional steam injection boiler superheaters generally use bare tubes or simple finned tube structures. The large temperature difference between the high-temperature flue gas and the working medium, along with concentrated thermal stress, makes them prone to safety hazards such as tube creep and tube rupture during long-term operation. Some oilfields have attempted to use flue gas waste heat recovery technology, but this often involves adding economizers, air preheaters, and other auxiliary equipment, resulting in low system integration and failing to fundamentally solve the problem of insufficient superheated steam heat storage and regulation capacity. Existing superheated steam accumulators mainly use filled sensible heat storage or single phase change heat storage structures. Sensible heat storage methods have low heat storage density and large equipment size. While single phase change heat storage methods offer improved heat storage density, they generally suffer from the following problems: First, low heat exchange efficiency, with insufficient heat exchange between the high-temperature flue gas and the heat storage medium, leading to significant heat loss; second, poor heat storage regulation capacity, making it difficult to maintain stable steam output parameters when the heat source fluctuates; and third, the performance of the heat transfer medium within the heat pipe elements deteriorates after long-term operation, and there is a lack of effective supplementary regulation methods, affecting the long-term reliability and efficiency of the system.
[0004] Therefore, it is necessary to provide a new heat pipe superheated steam accumulator to solve the above-mentioned technical problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a heat pipe type superheated steam accumulator.
[0006] The heat pipe superheated steam accumulator provided by this utility model includes: a heat storage tank, wherein a flue gas heat exchange zone, a heat storage regulation zone, and a superheated steam output zone are arranged sequentially from bottom to top inside the heat storage tank; a control box is installed on the outer wall of the heat storage tank; the flue gas heat exchange zone is located at the bottom of the heat storage tank; an inlet pipe and an outlet pipe are respectively arranged on both sides of the bottom of the heat storage tank; a flue gas pipe connected to the inlet pipe and the outlet pipe is installed in the flue gas heat exchange zone; a multi-stage flow guide baffle is arranged in the flue gas pipe along the flue gas flow direction; the heat storage regulation zone is located in the middle of the heat storage tank and is filled with heat storage components; a heat pipe bundle is installed in the superheated steam output zone; and a superheated steam inlet pipe and a superheated steam outlet pipe connected to the superheated steam output zone are respectively arranged on both sides of the top of the heat storage tank. The heat pipe bundle consists of multiple gravity heat pipes arranged radially to form a modular bundle structure. Each gravity heat pipe is vertically oriented and connected to a medium injection mechanism. The gravity heat pipe includes an evaporation section located in the flue gas heat exchange zone, an intermediate section located in the heat storage and regulation zone, and a condensation section located in the superheated steam output zone. The outer wall of the evaporation section is equipped with external fins, which are longitudinal fins and are axially spaced along the outer wall of the gravity heat pipe. The inner wall of the condensation section is equipped with internal fins. The heat storage component and the medium injection mechanism are both electrically connected to the control box.
[0007] Preferably, the heat storage component includes a metal frame installed within the heat storage regulation zone, and a heat storage layer is installed inside the metal frame. Multiple gravity heat pipes pass through the heat storage layer via through-holes. A temperature sensor and a pressure sensor are installed inside the heat storage layer. Several electric auxiliary heating rods are also embedded in the heat storage layer. All of the electric auxiliary heating rods, the temperature sensor, and the pressure sensor are electrically connected to the control box.
[0008] Preferably, the heat storage layer is made of inorganic salt phase change material or metal-based phase change material, and its phase change temperature is 20~50℃ higher than the rated operating temperature of superheated steam.
[0009] Preferably, one end of the multi-stage flow guide baffle is fixedly connected to the inner wall of the flue gas duct and is staggered along the flue gas flow direction.
[0010] Preferably, the bottom end of the flue gas duct is provided with an ash discharge port, and the heat storage tank is detachably equipped with a gate for sealing the ash discharge port.
[0011] Preferably, a steam distribution plate is installed in the superheated steam output area behind the superheated steam inlet pipe, and a second temperature sensor is installed on the superheated steam outlet pipe, the second temperature sensor being electrically connected to the control box.
[0012] Preferably, the medium injection mechanism includes a medium storage tank, which is fixedly installed on the top of the heat storage tank by a bracket, and the bottom end of the medium storage tank is connected to a filling pipe. One end of the filling pipe extending into the heat storage tank is connected to a medium distributor. The medium distributor has a medium channel, and the bottom end of the medium distributor is fitted with multiple connecting pipes. The top ends of the multiple connecting pipes are connected to the medium channel, and the other ends of the multiple connecting pipes are connected to the corresponding gravity heat pipe injection port. A control valve is installed on the filling pipe, and the control valve is electrically connected to a control box.
[0013] Preferably, a temperature sensor and a flow meter are installed on the flue gas inlet pipe, and the temperature sensor and the flow meter are electrically connected to the control box.
[0014] Compared with related technologies, the heat pipe superheated steam accumulator provided by this utility model has the following beneficial effects: 1. This utility model provides a heat pipe type superheated steam accumulator. By setting a flue gas heat exchange zone, a heat storage regulation zone and a superheated steam output zone in the heat storage tank from bottom to top, and setting a flue gas pipe with multi-stage flow guide baffles in the flue gas heat exchange zone, the flow path and residence time of the flue gas in the pipe are extended, the heat exchange efficiency between the flue gas and the gravity heat pipe evaporation section is improved, and the heat of the flue gas is fully recovered. 2. The gravity heat pipe of this utility model adopts a modular tube bundle structure. The outer wall of the evaporation section is provided with longitudinally spaced fins, which increases the heat exchange area of the evaporation section and improves the heat pipe's ability to absorb heat from flue gas. The inner wall of the condensation section is provided with inner fins, which increases the contact area between the condensation section and the superheated steam, enhances the heat pipe's heat release effect to the superheated steam, and significantly improves the overall heat transfer efficiency of the heat pipe. 3. This utility model sets up a heat storage component consisting of a metal frame and a heat storage layer in the heat storage regulation zone. A temperature sensor, a pressure sensor and an electric auxiliary heating rod are installed in the heat storage layer. The temperature and pressure status of the heat storage layer can be monitored in real time, and supplementary heating can be provided by the electric auxiliary heating rod when needed, so as to ensure that the heat storage layer is always in the optimal phase change heat storage state, thereby improving the system's adaptability to operating condition fluctuations and operational reliability. Attached Figure Description
[0015] Figure 1 A schematic diagram of a preferred embodiment of the heat pipe superheated steam accumulator provided by this utility model; Figure 2 A cross-sectional structural schematic diagram of the heat pipe superheated steam accumulator provided by this utility model; Figure 3 A schematic diagram of a flue gas duct with a flow guide baffle installed inside; Figure 4A schematic diagram of the structure of the heat storage component provided by this utility model; Figure 5 This is a schematic diagram of the gravity heat pipe provided by this utility model.
[0016] Numbered in the diagram: 1. Heat storage tank; 101. Flue gas heat exchange zone; 102. Heat storage regulation zone; 103. Superheated steam output zone; 11. Inlet pipe; 12. Exhaust pipe; 13. Superheated steam inlet pipe; 14. Superheated steam outlet pipe; 15. Temperature sensor three; 16. Flow meter; 2. Flue gas duct; 201. Ash discharge port; 21. Gate; 3. Baffle plate; 4. Heat storage component; 41. Metal frame; 42. Heat storage layer; 43. Temperature sensor three. 44. Pressure sensor 1; 45. Electric auxiliary heating rod; 5. Heat pipe bundle; 51. Gravity heat pipe; 501. Evaporation section; 502. Intermediate section; 503. Condensation section; 52. Outer fins; 53. Inner fins; 6. Medium injection mechanism; 61. Medium storage tank; 62. Filling pipe; 63. Medium distributor; 64. Connecting pipe; 65. Control valve; 7. Control box; 8. Steam distribution plate; 9. Temperature sensor 2. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0018] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0019] Please see Figures 1 to 5 The present invention provides a heat pipe superheated steam accumulator, which includes: a heat storage tank 1, a flue gas pipe 2, a heat storage component 4, a heat pipe bundle 5, a medium injection mechanism 6, and a control box 7.
[0020] The heat storage tank 1 is provided with a flue gas heat exchange zone 101, a heat storage regulation zone 102 and a superheated steam output zone 103 from bottom to top. A control box 7 is installed on the outer wall of the heat storage tank 1. The flue gas heat exchange zone 101 is located at the bottom of the heat storage tank 1. A flue gas inlet pipe 11 and a flue gas outlet pipe 12 are respectively provided on both sides of the bottom of the heat storage tank 1. A flue gas pipe 2 connected to the flue gas inlet pipe 11 and the flue gas outlet pipe 12 is installed in the flue gas heat exchange zone 101. A multi-stage flow guide baffle 3 is provided in the flue gas pipe 2 along the flue gas flow direction. The heat storage regulation zone 102 is located in the middle of the heat storage tank 1. The heat storage component 4 is filled inside. A heat pipe bundle 5 is installed in the superheated steam output zone 103. A superheated steam inlet pipe 13 and a superheated steam outlet pipe 14 connected to the superheated steam output zone 103 are respectively provided on both sides of the top of the heat storage tank 1. The heat pipe bundle 5 is a modular bundle structure composed of multiple gravity heat pipes 51 arranged radially and uniformly. Each gravity heat pipe 51 is arranged vertically and connected to a medium injection mechanism 6. The gravity heat pipe 51 includes an evaporation section 501 located in the flue gas heat exchange zone 101, an intermediate section 502 located in the heat storage regulation zone 102, and a condensation section 503 located in the superheated steam output zone 103. The outer wall of the evaporation section 501 is equipped with outer fins 52, which are longitudinal fins and are arranged axially at intervals along the outer wall of the gravity heat pipe 51. The inner wall of the condensation section 503 is equipped with inner fins 53. The heat storage component 4 and the medium injection mechanism 6 are both electrically connected to the control box 7.
[0021] It should be noted that during use, high-temperature flue gas enters the flue gas duct 2 through the inlet pipe 11 and flows along the tortuous channel formed by the multi-stage guide baffles 3 within the flue gas duct 2, extending the residence time of the flue gas. The heat in the flue gas is transferred through the pipe wall of the flue gas duct 2 to the evaporation section 501 of the gravity heat pipe 51 located in the flue gas heat exchange zone 101. The evaporation section 501 utilizes the outer fins 52 on its outer wall to increase the heat-receiving area and improve the heat absorption efficiency. The liquid working fluid in the evaporation section 501 is heated and evaporated into steam, which rises along the interior of the gravity heat pipe 51 to the condensation section 5. 03. In the condensation section 503, the steam releases heat to the superheated steam in the superheated steam output zone 103, condenses itself into a liquid working fluid, and flows back to the evaporation section 501, completing a heat transfer cycle. When the temperature of the superheated steam in the superheated steam output zone 103 is lower than the set value, the heat storage component 4 releases the stored heat and replenishes the working fluid in the heating heat pipe through the intermediate section 502 to maintain a stable heat output. Under the control of the control box 7, the medium injection mechanism 6 can replenish the working fluid to each gravity heat pipe 51 online to ensure the long-term efficient operation of the heat pipe.
[0022] It should also be noted that the gravity heat pipes 51 are arranged radially to form a modular tube bundle structure, which facilitates manufacturing, installation and maintenance. The outer fins 52 are arranged axially at intervals, which increases the heat exchange area without excessively hindering the flow of flue gas. The inner fins 53 are set on the inner wall of the condensing section 503, which effectively increases the heat exchange area between the condensing section and the superheated steam and improves the heat release efficiency.
[0023] It is worth noting that the tank wall of the heat storage tank 1 is equipped with an insulation layer, which enhances its heat storage capacity. An external insulation layer prevents heat loss and facilitates the installation of the control box 7 on the outer wall of the heat storage tank 1. The internal components can operate under normal operating temperatures. The control box 7 integrates a programmable logic controller (PLC) or embedded microcontroller as the core control unit, controlling the equipment to operate according to set parameters. A touch screen or indicator lights are installed on the control box 7 panel to display real-time sensor data, equipment operating status, and fault alarm information.
[0024] Furthermore, a temperature sensor 15 and a flow meter 16 are installed on the flue pipe 11, and both the temperature sensor 15 and the flow meter 16 are electrically connected to the control box 7.
[0025] It should be noted that: temperature sensor 15 detects the temperature of the flue gas at the flue gas inlet pipe 11 in real time, and flow meter 16 detects the flow rate of the flue gas in real time. Both transmit the detection signals to control box 7. Control box 7 calculates and controls the operating status of the heat accumulator based on parameters such as flue gas temperature, flow rate and superheated steam outlet temperature, so as to realize intelligent heat storage and heat release management.
[0026] In the embodiments of this utility model, please refer to Figure 1 , Figure 2 and Figure 4 The heat storage component 4 includes a metal frame 41, which is installed in the heat storage regulation area 102. A heat storage layer 42 is installed inside the metal frame 41. Multiple gravity heat pipes 51 pass through the heat storage layer 42. A temperature sensor 43 and a pressure sensor 44 are installed inside the heat storage layer 42. Several electric auxiliary heating rods 45 are also embedded in the heat storage layer 42. The electric auxiliary heating rods 45, the temperature sensor 43, and the pressure sensor 44 are all electrically connected to the control box 7.
[0027] It should be noted that: the metal frame 41 provides structural support for the heat storage layer 42 and helps to conduct heat evenly within the heat storage layer 42. The heat storage layer 42 is in close contact with the middle section 502 of the gravity heat pipe 51 through the through hole, which facilitates heat exchange. Temperature sensor 43 monitors the temperature of the heat storage layer 42 in real time, and pressure sensor 44 monitors the pressure status of the heat storage layer 42 in real time. Both transmit the detection signals to the control box 7. When the temperature of the heat storage layer 42 is lower than the set threshold, the control box 7 controls the electric auxiliary heating rod 45 to start, so as to supplement the heating of the heat storage layer 42 and ensure that the heat storage layer 42 is always in the optimal heat storage temperature range.
[0028] In this embodiment, the heat storage layer 42 is made of inorganic salt phase change material or metal-based phase change material, and its phase change temperature is 20-50°C higher than the rated operating temperature of the superheated steam. This configuration ensures that under normal operating conditions, the heat storage layer 42 stores a large amount of heat in the form of latent heat of phase change. When heat needs to be released, the phase change temperature of the heat storage layer 42 is higher than the operating temperature of the superheated steam, which can form an effective heat transfer temperature difference, ensuring that heat is smoothly transferred from the heat storage layer 42 to the middle section 502 of the gravity heat pipe 51. In the embodiments of this utility model, please refer to Figure 1 , Figure 2 and Figure 3 One end of the multi-stage flow guide baffle 3 is fixedly connected to the inner wall of the flue gas duct 2 and is staggered along the flue gas flow direction.
[0029] It should be noted that the multi-stage baffles 3 are arranged in an alternating manner to form an S-shaped or baffle-type flue gas flow channel in the flue gas duct 2, which effectively increases the flow path length and residence time of the flue gas in the flue gas duct 2, making the heat exchange between the flue gas and the pipe wall of the flue gas duct 2 more complete and improving the heat recovery rate of the flue gas.
[0030] Furthermore, a ash discharge port 201 is provided at the bottom of the flue gas duct 2, and a gate 21 for sealing the ash discharge port 201 is detachably installed on the heat storage tank 1. After long-term operation, dust in the flue gas may accumulate at the bottom of the flue gas duct 2. By periodically opening the gate 21, the accumulated ash can be discharged through the ash discharge port 201, which can keep the inside of the flue gas duct 2 clean and prevent the accumulation of ash from affecting the heat exchange efficiency.
[0031] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 A steam distribution plate 8 is installed in the superheated steam output area 103 behind the superheated steam inlet pipe 13. A temperature sensor 2 9 is installed on the superheated steam outlet pipe 14. The temperature sensor 2 9 is electrically connected to the control box 7.
[0032] It should be noted that the steam equalization plate 8 is a perforated plate structure with holes arranged in equilateral triangles or squares, and an opening rate of 30% to 60%. The steam equalization plate 8 is used to evenly distribute the superheated steam entering from the superheated steam inlet pipe 13 to various areas of the superheated steam outlet zone 103, ensuring that the condensation section 503 of each gravity heat pipe 51 can evenly heat the flowing superheated steam, thereby improving the uniformity and efficiency of heat exchange. Temperature sensor 2 9 detects the steam temperature at the superheated steam outlet pipe 14 in real time and transmits the signal to the control box 7, so that the control box 7 can adjust the heat release power of the heat storage component 4 or the heating power of the electric auxiliary heating rod 45 according to the outlet temperature to achieve precise temperature control.
[0033] In the embodiments of this utility model, please refer to Figure 1 , Figure 2 and Figure 5 The medium injection mechanism 6 includes a medium storage tank 61, which is fixedly installed on the top of the heat storage tank 1 by a bracket. The bottom end of the medium storage tank 61 is connected to a filling pipe 62. One end of the filling pipe 62, which extends into the heat storage tank 1, is connected to a medium distributor 63. The medium distributor 63 is provided with a medium channel, and multiple connecting pipes 64 are embedded at the bottom end of the medium distributor 63. The top ends of the multiple connecting pipes 64 are connected to the medium channel, and the other ends of the multiple connecting pipes 64 are connected to the injection port of the corresponding gravity heat pipe 51. A control valve 65 is installed on the filling pipe 62, and the control valve 65 is electrically connected to the control box 7.
[0034] It should be noted that the medium storage tank 61 stores the working fluid (such as water, ethanol, or special heat pipe working fluid) required by the gravity heat pipe 51. When the control box 7 determines that the working fluid of a certain gravity heat pipe 51 is insufficient (this can be determined based on the decrease in heat transfer performance or operating time of the heat pipe), the control box 7 opens the control valve 65. The working fluid in the medium storage tank 61 flows into the medium channel of the medium distributor 63 through the filling pipe 62, and then is distributed to each connecting pipe 64 through the medium channel. Finally, it is injected into the corresponding gravity heat pipe 51 through the connecting pipe 64, realizing online replenishment of the working fluid. The setting of the medium distributor 63 ensures that each gravity heat pipe 51 can receive a balanced replenishment of the working fluid.
[0035] Specifically, the working medium is selected based on the operating conditions of the oilfield steam injection boiler: water is used as the working medium when the operating temperature is 200~350℃, sodium or lithium liquid metal is used as the working medium when the operating temperature is 350~500℃, and organic working medium is used when the operating temperature is 150~300℃.
[0036] The working principle of the heat pipe superheated steam accumulator provided by this utility model is as follows: In use, high-temperature flue gas enters the flue gas duct 2 from the inlet pipe 11. Under the guidance of the staggered multi-stage flow guide baffles 3, it flows along the tortuous channel, prolonging the residence time and allowing the heat of the flue gas to be fully transferred to the pipe wall of the flue gas duct 2. The evaporation section 501 of the gravity heat pipe 51 located in the flue gas heat exchange zone 101 efficiently absorbs the heat transferred from the pipe wall through the outer fins 52 on the outer side wall. The liquid working fluid in the evaporation section 501 is heated and evaporated into steam and rises to the condensation section 503. In the condensation section 503, the steam releases heat efficiently to the superheated steam in the superheated steam output zone 103 through the inner fins 53 on the inner side wall, condenses itself into liquid and flows back to the evaporation section 501. When the temperature of the superheated steam entering the superheated steam output zone 103 is lower than the set value, the heat storage layer 42 in the heat storage component 4 releases the stored latent heat of phase change, and supplements the working fluid in the gravity heat pipe 51 through the intermediate section 502 to ensure the stability of the output superheated steam temperature. Temperature sensor 1 43 and pressure sensor 1 44 monitor the status of the heat storage layer 42 in real time. When the temperature of the heat storage layer 42 is too low, the control box 7 controls the electric auxiliary heating rod 45 to start supplementary heating. Under the control of the control box 7, the medium injection mechanism 6 supplements the working fluid to each gravity heat pipe 51 online through the medium storage tank 61, the filling pipe 62, the medium distributor 63 and the connecting pipe 64 to ensure the long-term efficient operation of the heat pipe. Temperature sensor 2 9 monitors the outlet temperature of the superheated steam discharge pipe 14 in real time, and temperature sensor 3 15 and flow meter 16 monitor the flue gas parameters of the flue gas inlet pipe 11 in real time. All monitoring data are transmitted to the control box 7 for comprehensive analysis to realize the intelligent and automated control of the heat storage device.
[0037] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications to other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. A heat pipe type superheated steam accumulator, comprising: A heat storage tank (1) is provided with a flue gas heat exchange zone (101), a heat storage regulation zone (102), and a superheated steam output zone (103) arranged sequentially from bottom to top inside the heat storage tank (1). A control box (7) is installed on the outer wall of the heat storage tank (1). The heat storage tank (1) is characterized in that the flue gas heat exchange zone (101) is located at the bottom of the heat storage tank (1), and a flue gas inlet pipe (11) and a flue gas outlet pipe (12) are respectively provided on both sides of the bottom of the heat storage tank (1). A control box (7) is installed inside the flue gas heat exchange zone (101) and the control box (7). The flue gas pipe (2) is connected to the flue gas pipe (12). The flue gas pipe (2) is provided with multi-stage flow guide baffles (3) along the flue gas flow direction. The heat storage regulation zone (102) is located in the middle of the heat storage tank (1) and is filled with heat storage components (4). The heat pipe bundle (5) is installed in the superheated steam output zone (103). The top two sides of the heat storage tank (1) are respectively provided with a superheated steam inlet pipe (13) and a superheated steam outlet pipe (14) connected to the superheated steam output zone (103). The heat pipe bundle (5) is a modular bundle structure composed of multiple gravity heat pipes (51) arranged radially and uniformly. Each gravity heat pipe (51) is arranged vertically and connected to a medium injection mechanism (6). The gravity heat pipe (51) includes an evaporation section (501) in the flue gas heat exchange zone (101), an intermediate section (502) in the heat storage regulation zone (102), and a condensation section (503) in the superheated steam output zone (103). The outer wall of the evaporation section (501) is equipped with outer fins (52). The outer fins (52) are longitudinal fins and are arranged axially at intervals along the outer wall of the gravity heat pipe (51). The inner wall of the condensation section (503) is equipped with inner fins (53). The heat storage component (4) and the medium injection mechanism (6) are both electrically connected to the control box (7).
2. The heat pipe type superheated steam accumulator according to claim 1, characterized in that, The heat storage component (4) includes a metal frame (41), which is installed in the heat storage regulation area (102). A heat storage layer (42) is installed in the metal frame (41), and a through hole through which multiple gravity heat pipes (51) pass. A temperature sensor (43) and a pressure sensor (44) are installed in the heat storage layer (42). Several electric auxiliary heating rods (45) are also embedded in the heat storage layer (42). The several electric auxiliary heating rods (45), the temperature sensor (43) and the pressure sensor (44) are all electrically connected to the control box (7).
3. The heat pipe type superheated steam accumulator according to claim 2, characterized in that, The heat storage layer (42) is made of inorganic salt phase change material or metal-based phase change material, and its phase change temperature is 20~50℃ higher than the rated operating temperature of superheated steam.
4. The heat pipe type superheated steam accumulator according to claim 1, characterized in that, One end of the multi-stage flow guide baffle (3) is fixedly connected to the inner wall of the flue gas duct (2) and is staggered along the flue gas flow direction.
5. The heat pipe type superheated steam accumulator according to claim 4, characterized in that, The bottom end of the flue gas duct (2) is provided with an ash discharge port (201), and the heat storage tank (1) is detachably equipped with a gate (21) for sealing the ash discharge port (201).
6. The heat pipe type superheated steam accumulator according to claim 1, characterized in that, A steam equalization plate (8) is installed in the superheated steam output area (103) behind the superheated steam inlet pipe (13). A temperature sensor (9) is installed on the superheated steam outlet pipe (14). The temperature sensor (9) is electrically connected to the control box (7).
7. The heat pipe type superheated steam accumulator according to claim 1, characterized in that, The medium injection mechanism (6) includes a medium storage tank (61), which is fixedly installed on the top of the heat storage tank (1) by a bracket, and the bottom end of the medium storage tank (61) is connected to a filling pipe (62). One end of the filling pipe (62) extending into the heat storage tank (1) is connected to a medium distributor (63). The medium distributor (63) is provided with a medium channel, and the bottom end of the medium distributor (63) is fitted with multiple connecting pipes (64). The top end of the multiple connecting pipes (64) is connected to the medium channel, and the other end of the multiple connecting pipes (64) is connected to the injection port of the corresponding gravity heat pipe (51). A control valve (65) is installed on the filling pipe (62), and the control valve (65) is electrically connected to the control box (7).
8. The heat pipe type superheated steam accumulator according to claim 1, characterized in that, Temperature sensor 3 (15) and flow meter (16) are installed on the smoke inlet pipe (11), and both temperature sensor 3 (15) and flow meter (16) are electrically connected to the control box (7).