An energy-saving boiler truck steam generator

Abstract

This invention discloses an energy-saving boiler vehicle steam generator, relating to the field of energy-saving boiler technology. It includes a boiler drum with end caps fixedly installed at both ends. It also includes a heat exchange tube assembly located inside the boiler drum, comprising two support rings fixedly connected to the sides of the end caps facing the boiler drum. Four support plates are arranged in a rectangular array between the two support rings, with the length direction of the support plates aligned with the axial direction of the support rings. Each support plate has a U-shaped spring fixedly connected to one end facing the support ring, with the opening direction of the U-shaped spring aligned with the axial direction of the support ring. The side of each U-shaped spring away from the support plate is fixedly connected to the outer side of the corresponding support ring. By floating the spiral heat exchange tubes, the constraint force during thermal deformation is reduced, avoiding the cracking, water leakage, and air leakage that easily occur with traditional fixed-connection heat exchange tubes, ultimately leading to heat source waste.

Description

Technical Field

[0001] This invention relates to the field of energy-saving boiler technology, and more specifically, to an energy-saving boiler vehicle steam generator. Background Technology

[0002] A steam generator is a type of steam heat source (commonly known as a boiler). Its core principle is to use heat exchange to allow water to absorb heat and vaporize into steam in a pressurized container. The main uses of vehicle-mounted boiler steam generators include heating and cooking food, as well as providing heating for vehicle compartments. However, there are still some issues to be addressed in order to achieve energy-saving boilers.

[0003] Maintaining efficient water circulation is crucial in steam generators, requiring excellent sealing of the entire water circulation pipeline. Leaks in the boiler not only waste heat but also reduce the pump's efficiency, increasing boiler energy consumption. In existing technology, heat exchange tubes inside the steam generator are typically fixed to the inner wall of the boiler drum via connectors. However, because the inside of the boiler drum is at a higher temperature than the outside, the heat exchange tubes expand and deform rapidly during startup. The connectors further restrict this deformation, leading to cracking and leaks of hot water and steam. This ultimately affects steam output, wastes heat, increases energy consumption, significantly reduces energy efficiency, and lowers operational safety.

[0004] To address the aforementioned issues, an energy-saving steam generator for boiler trucks is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, an energy-saving boiler vehicle steam generator is provided. This technical solution solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention can be implemented using the following technical solutions:

[0007] This invention provides an energy-saving boiler vehicle steam generator, including a boiler drum with end caps fixedly installed at both ends. It also includes a heat exchange tube assembly located inside the boiler drum, comprising two support rings fixedly connected to the sides of the end caps facing the boiler drum. Four support plates are arranged in a rectangular array between the two support rings, with the length direction of the support plates aligned with the axial direction of the support rings. Each support plate has a U-shaped spring fixedly connected to its two ends facing the support rings, with the opening direction of the U-shaped spring aligned with the axial direction of the support rings. The side of each U-shaped spring away from the support plate is fixedly connected to the outer side of the corresponding support ring. The heat exchange tube assembly also includes a spiral heat exchange tube, with its spiral cavity sleeved outside the array of four support plates. Limiting blocks are fixedly connected to both ends of each support plate facing the inner wall of the boiler drum, with each limiting block positioned within the corresponding spiral gap of the spiral heat exchange tube.

[0008] Furthermore, it also includes a flexible connection assembly, which includes an outer tube 1, which is fixedly connected to the top of the boiler drum. The outer tube 1 is aligned with the outlet of the spiral heat exchange tube. A flange 1 is fixedly installed at the top end of the outer tube 1. A metal flexible hose 1 is fixedly connected to the bottom end of the flange 1. A flange 2 is fixedly connected to the bottom end of the metal flexible hose 1. The bottom end of the flange 2 is fixedly connected to the outlet of the spiral heat exchange tube.

[0009] Furthermore, the flexible connection assembly also includes an outer tube two, which is fixedly connected to the bottom of the boiler drum. The outer tube two is aligned with the inlet of the spiral heat exchange tube. A flange three is fixedly installed at the bottom end of the outer tube two. A metal flexible hose two is fixedly connected to the top end of the flange three. A flange four is fixedly connected to the top end of the metal flexible hose two. The top end of the flange four is fixedly connected to the inlet of the spiral heat exchange tube.

[0010] Furthermore, it also includes an energy-saving device, the air inlet of which is connected to the outer pipe, and the water outlet of which is connected to the bottom port of the flange.

[0011] Furthermore, it also includes a gas-liquid separator, the inlet of which is connected to the top port of flange one.

[0012] Furthermore, it also includes a water pump, with a three-way control valve fixedly connected to the water inlet of the water pump, the return water outlet of the gas-liquid separator connected to the three-way control valve, and the water outlet of the water pump connected to the water inlet of the energy-saving device.

[0013] Furthermore, it also includes a burner, which is fixedly mounted in the middle of one of the end caps, and its combustion section extends into the interior of the boiler drum.

[0014] As described above, the features and advantages of the energy-saving boiler vehicle steam generator of the present invention are as follows:

[0015] By using floating spiral heat exchange tubes, the constraint force during thermal deformation is reduced, which improves the existing technology where the heat exchange tubes are restricted in their deformation due to the pull of the connecting parts during expansion. This prevents cracking and leakage of water and steam under the pull of both sides, thus avoiding the problem of reduced steam output due to pipe cracking and wasting heat source. This achieves the goal of safety and energy saving, and suppresses the unstable factors in the operation of the steam generator.

[0016] When the spiral heat exchange tube deforms, the positions of its inlet and outlet will change. In order to ensure the stability of the connection between the spiral heat exchange tube and the outside of the boiler drum, its outlet is connected to a gas-liquid separator through a metal flexible hose, and its inlet is connected to an energy-saving device through a metal flexible hose. In this way, the deformable characteristics of the metal flexible hose can adapt to the change in the position of the inlet and outlet, thereby avoiding the rigid connection between the spiral heat exchange tube and the external pipe, which would easily lead to poor sealing and leakage of water and air at the connection when it deforms. This suppresses the waste of heat source, maintains the efficiency of the water pump, and achieves the purpose of safe and energy-saving use of the boiler.

[0017] By setting an appropriate thickness for the limiting block, it can abut against both sides of the spiral gap before and after the expansion and deformation of the spiral heat exchange tube, thereby preventing the spiral heat exchange tube from sliding on the support plate due to inertia when the vehicle starts and stops. By ensuring the installation stability of the structure, a safer use is achieved. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 for Figure 1 Another perspective diagram of the structure;

[0020] Figure 3 This is a schematic diagram of the pot drum and end cap structure shown in this invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the pot drum as shown in the present invention;

[0022] Figure 5 This is a schematic diagram of the engagement between the limiting block and the spiral heat exchange tube as shown in this invention;

[0023] Figure 6 This is a schematic diagram of the spiral heat exchange tube before and after deformation and its engagement with the limiting block in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the cooperation between the support ring and the U-shaped spring sheet as shown in this invention;

[0025] Figure 8This is a schematic diagram of the elastic connection component shown in the present invention;

[0026] Figure 9 This is an exploded view of the elastic connection component structure shown in this invention;

[0027] Figure 10 This is a schematic diagram showing the connection of the energy-saving device, gas-liquid separator, and water pump shown in the present invention.

[0028] Figure 11 for Figure 10 A schematic diagram of the structure from another perspective.

[0029] The reference numerals in the accompanying drawings of this invention are as follows:

[0030] 11. Boiler drum; 12. End cap; 13. Burner; 14. Eco-friendly device; 15. Gas-liquid separator; 16. Water pump; 17. Three-way control valve;

[0031] Heat exchange tube assembly: 21. Support ring; 22. U-shaped spring; 23. Support plate; 24. Limiting block; 25. Spiral heat exchange tube;

[0032] Flexible connection components: 31. Outer pipe 1; 32. Flange 1; 33. Flange 2; 34. Metal flexible hose 1; 35. Outer pipe 2; 36. Flange 3; 37. Flange 4; 38. Metal flexible hose 2. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] See Figures 1-11 As shown, an embodiment of the present invention is provided, and an energy-saving boiler vehicle steam generator will be described in detail below:

[0035] See Figures 1-7As shown, an energy-saving boiler truck steam generator includes a boiler drum 11, with end caps 12 fixedly installed at both ends of the boiler drum 11. It also includes a heat exchange tube assembly located inside the boiler drum 11, comprising two support rings 21, which are respectively fixedly connected to the two end caps 12 on the side facing the boiler drum 11. Four support plates 23 are arranged in a rectangular array between the two support rings 21, with the length direction of the support plates 23 aligned with the axial direction of the support rings 21. Each support plate 23 has its two ends fixedly connected to the side facing the support rings 21. There is a U-shaped spring piece 22, and the opening direction of the U-shaped spring piece 22 is consistent with the axial direction of the support ring 21. The side of each U-shaped spring piece 22 away from the support plate 23 is fixedly connected to the outer side of the corresponding support ring 21. The heat exchange tube assembly also includes a spiral heat exchange tube 25. The spiral cavity of the spiral heat exchange tube 25 is sleeved on the outside of the array of four support plates 23. Each support plate 23 has a limit block 24 fixedly connected at both ends on the side facing the inner wall of the boiler drum 11. Each limit block 24 is located in the spiral gap corresponding to the spiral heat exchange tube 25.

[0036] Furthermore, the energy-saving boiler truck steam generator also includes a burner 13, which is fixedly installed in the middle of one of the end caps 12, and its combustion section extends into the interior of the boiler drum 11.

[0037] It should be noted that combustion-type steam generators are common on-board equipment, especially on trains. They can be used for food processing and heating of carriages by generating high-temperature steam while the train is running. The basic principle is that heat energy is released by burning fuel to heat liquid water and generate steam. That is, the fuel enters the burner 13 through the conveying system, mixes with air in a set ratio, and is ignited and burned. High temperature is generated in the combustion chamber. The high temperature passes through a heat exchanger, such as a coil, water pipe, etc. In this embodiment, it is a spiral heat exchange tube 25, and exchanges heat with water, transferring heat to the water in the furnace body, raising its temperature to boiling, thereby generating steam.

[0038] In this embodiment, the burner 13 adopts existing mature technology. It achieves efficient and stable combustion to release heat energy by precisely controlling the mixing ratio of fuel and air and igniting it. Specifically, the fuel is delivered to the nozzle of the burner 13 by a fuel pump or solenoid valve. The fuel can be selected according to the actual operation of the train, such as natural gas or fuel oil. At the same time, the fan sends air in through the air inlet to form a high-speed airflow. At the nozzle, the fuel oil is atomized or the gas is sprayed out at a preset pressure. It is fully mixed with the air in the mixing chamber through turbulence to form a combustible mixture. The ignition device generates a fire source to ignite the mixture and form a stable flame in the combustion chamber. The high-temperature flue gas generated by combustion transfers heat to the heat exchange tube bundle of the steam generator or the water in the furnace through radiation and convection.

[0039] In the existing technology, heat exchange tubes are usually fixed to the inner wall of the boiler drum 11 by connectors. However, since the inside of the boiler drum 11 is at a high temperature, the heat exchange tubes deform due to thermal expansion when the equipment is started up. However, the deformation of the heat exchange tubes is limited by the tension of the connectors. As a result, the heat exchange tubes are prone to cracking and leaking water and gas under the tension of both sides. After the cracking, the leakage of high-temperature steam will increase the heat loss of the pipeline network. When the cracking causes the steam to leak directly, the energy loss will be multiplied, resulting in increased energy consumption of the steam generator boiler and failure to save energy.

[0040] The spiral heat exchange tube 25 in this invention has a structure in which a metal tube is coiled around the central axis of a virtual cylinder in a spiral or multi-layered spiral structure. When the temperature rises, the spiral heat exchange tube 25 will expand linearly along the axial direction of the tube, i.e., the tangent direction of the spiral line, and radially, i.e., the direction perpendicular to the cylinder axis, due to thermal expansion and contraction. In the above-mentioned axial extension, i.e. along the cylinder axis, the pitch of each turn of the spiral heat exchange tube 25, i.e. the distance between two adjacent turns in the axial direction of the cylinder, will increase due to the increase in tube length, causing the entire spiral heat exchange tube 25 to elongate in the axial direction of the cylinder. In the above-mentioned radial expansion, i.e. along the increase of the cylinder radius, the circumferential expansion of the spiral heat exchange tube 25 will increase the radius of the spiral coil, resulting in an increase in the spiral radius of the spiral heat exchange tube 25. This further ensures that the spiral heat exchange tube 25 will not be damaged by traction, resulting in steam leakage and increased energy consumption, thus achieving the energy-saving efficiency of the boiler.

[0041] Similarly, during heating, the support plate 23 and U-shaped spring sheet 22 inside the boiler drum 11 will also deform due to thermal expansion and contraction. Among them, the long strip support plate 23, made of a uniform material, expands uniformly when heated. Due to the cumulative deformation along its length, the absolute deformation of the support plate 23 is greater in its length direction. When the U-shaped sheet, made of a uniform material, expands when heated, it elongates uniformly in all directions in the plane. The extension arms on both sides extend outward and slightly expand outward, while the horizontal section between the two extension arms expands to both ends, making the U-shaped opening larger. This allows the spiral heat exchange tube 25 to have an expansion and extension effect, avoiding the problem of tearing and breakage, and further achieving the purpose of boiler energy saving.

[0042] Specifically, in this embodiment, when the spiral heat exchange tube 25 expands, its spiral radius increases. Since there is a certain gap between the spiral heat exchange tube 25 and the inner wall of the boiler drum 11, the boiler drum 11 does not restrict the deformation of the spiral heat exchange tube 25. Simultaneously, due to the expansion of the opening of the U-shaped spring piece 22, the support plate 23 can be moved closer to the inner wall of the boiler drum 11, thus ensuring the support for the spiral heat exchange tube 25. In this invention, the support plate 23 is supported by the support ring 21 on the end cap 12, and the support plate 23 and the support ring 21 are connected by the U-shaped spring piece 22. Furthermore, since the U-shaped spring sheet 22 is elastic, when the length deformation of the support plate 23 intensifies, the U-shaped spring sheet 22 can absorb the deformation of the support plate 23, avoiding excessive constraint of the support ring 21 on the support plate 23, which would cause the middle of the support plate 23 to deform and bulge, thereby reducing the good support effect on the spiral heat exchange tube 25. By floating the spiral heat exchange tube 25, the constraint force when it is deformed by heat is reduced, suppressing the risk of cracking and leakage of water and air in the spiral heat exchange tube 25, avoiding the disruption of the balance of the condensate drainage system due to cracking, and causing a decrease in the condensate recovery rate, thereby further increasing the boiler's energy efficiency.

[0043] Furthermore, to better adapt to the stop-and-go operating environment of vehicles, a limiting block 24 is installed within the spiral gap of the spiral heat exchange tube 25. This limiting block 24 restricts the tube from sliding on the support plate 23 due to the inertia of the vehicle during start-and-stop operations, maintaining the stability of the spiral heat exchange tube 25 and making it safer to use. For details, please refer to [link / reference needed]. Figure 6 As shown, by setting an appropriate thickness for the limiting block 24, it can correspondingly abut against the side of the spiral gap near the end cap 12 before the spiral heat exchange tube 25 expands and deforms, and correspondingly abut against the side of the spiral gap away from the end cap 12 after the spiral heat exchange tube 25 expands and deforms.

[0044] See Figures 8-9As shown, the energy-saving boiler truck steam generator also includes a flexible connection assembly. This assembly includes an outer pipe 31, which is fixedly connected to the top of the boiler drum 11 and aligned with the outlet of the spiral heat exchange tube 25. A flange 32 is fixedly installed at the top end of the outer pipe 31, and a metal flexible hose 34 is fixedly connected to the bottom end of the flange 32. A second flange 33 is fixedly connected to the bottom end of the metal flexible hose 34, and the bottom end of the second flange 33 is connected to the spiral heat exchange tube 25. The outlet of pipe 25 is fixedly connected. The flexible connection assembly also includes an outer pipe 35, which is fixedly connected below the boiler drum 11 and aligned with the inlet of the spiral heat exchange pipe 25. A flange 36 is fixedly installed at the bottom end of the outer pipe 35. A metal flexible hose 38 is fixedly connected to the top end of the flange 36. A flange 4 37 is fixedly connected to the top end of the metal flexible hose 38. The top end of the flange 4 37 is fixedly connected to the inlet of the spiral heat exchange pipe 25.

[0045] During operation, the inlet and outlet of the spiral heat exchange tube 25 need to pass through the boiler drum 11 to connect with the outside. However, the spiral heat exchange tube 25 deforms due to heat inside the boiler drum 11. Therefore, to ensure that the connection between the inlet and outlet of the spiral heat exchange tube 25 and the inner wall of the boiler drum 11 is not affected by deformation, an elastic connection component is provided in this embodiment. When the spiral heat exchange tube 25 deforms, the position of its inlet and outlet changes. At this time, its outlet is connected to a metal flexible hose 34 via flange 2 33, and the metal flexible hose 34 is connected to the outside via flange 32. Therefore, the deformable feature of the metal hose 34 allows it to adapt to changes in the position of the outlet. Similarly, its inlet is connected to the metal hose 38 via flange 37, and the metal hose 38 is connected to the outside via flange 36. Thus, the deformable feature of the metal hose 38 allows it to adapt to changes in the position of the inlet, ensuring smooth water flow. It also avoids the problem of leakage caused by the stress on the spiral heat exchange tube 25 expanding the outlet, which could loosen it. This effectively solves the problem of pressure imbalance caused by leakage at the outlet, which leads to increased energy consumption, thereby achieving the goal of an energy-saving boiler.

[0046] It should be noted that in this embodiment, the metal hose adopts existing technology, such as 304 stainless steel metal hose, which is composed of stainless steel corrugated pipe with steel wire or steel strip mesh braided on the outside, and flanges or joints at both ends. It has the characteristics of good flexibility and strong corrosion resistance, and its temperature resistance range is -196℃ to +420℃. In practical applications, it can stably withstand high temperatures of 300-350℃.

[0047] See Figures 10-11As shown, the energy-saving boiler vehicle steam generator also includes an energy-saving device 14. The air inlet of the energy-saving device 14 is connected to the outer pipe 31, and the water outlet of the energy-saving device 14 is connected to the bottom port of the flange 36.

[0048] It should be noted that in this embodiment, the energy saver 14 adopts existing technology. It is a device that uses the waste heat of high-temperature flue gas to recover heat and improve the system energy efficiency. The specific process is as follows: the high-temperature flue gas generated by combustion carries a large amount of unutilized heat energy. The main body of the energy saver 14 is a group of densely arranged metal heat exchange tube bundles. The medium to be heated flows inside the tube bundles, which is usually the feed water of the steam generator. When the high-temperature flue gas passes through the outside of the tube bundles of the energy saver 14, the heat is transferred to the tube bundles through convection heat transfer and radiation heat transfer. The medium inside the tube bundles absorbs heat and its temperature rises, thereby reducing the energy consumption of the steam generator body and achieving the purpose of boiler energy saving.

[0049] Specifically, in this embodiment, see [reference] Figure 11 As shown, the high-temperature flue gas discharged from the boiler drum 11 enters the interior of the economizer 14 through the outer pipe 31. The low-temperature water that needs to be preheated before entering the spiral heat exchange tube 25 is pumped by the water pump 16 and flows in from above the economizer 14. After exchanging heat with the high-temperature flue gas in the economizer 14, the preheated water will be heated. The heated preheated water will then enter the interior of the spiral heat exchange tube 25 through the flange 36, the metal hose 28, and the flange 47 in sequence. By setting up the economizer 14, the heat energy of the high-temperature flue gas is recovered, and the energy-saving purpose of this device is achieved.

[0050] See Figures 1-8 As shown, the energy-saving boiler vehicle steam generator also includes a gas-liquid separator 15, the inlet of which is connected to the top port of flange 32. The energy-saving boiler vehicle steam generator also includes a water pump 16, the inlet of which is fixedly connected to a three-way control valve 17, the return water outlet of the gas-liquid separator 15 is connected to the three-way control valve 17, and the outlet of the water pump 16 is connected to the inlet of the energy-saving device 14.

[0051] It should be noted that the gas-liquid separator 15 adopts existing technology. The gas-liquid separator 15 for steam generators is used to separate the moisture carried in the steam and improve the steam quality. Its working principle is based on the density difference between steam and water and a multi-stage separation mechanism. The specific process is as follows: When steam carrying water droplets enters the separator from the steam generator, the flow rate is first reduced by expanding the volume and reducing the pressure. Gravity separation is used to allow larger water droplets to settle to the bottom of the separator. Subsequently, the steam flows through inertial separation elements, such as louvered baffles or deflectors. The airflow generates inertial force due to the change in direction, and the water droplets collide with the baffles and gather into larger droplets, which slide down the plate wall to the bottom liquid collection area. The separated dry steam is sent to the steam-using system from the upper outlet, while the separated water flows back to the steam generator through the bottom condensate drain device. This reduces the steam humidity and the risk of water hammer in the pipeline without affecting the system's water circulation.

[0052] Specifically, in this embodiment, the water inside the spiral heat exchange tube 25 is heated to form a steam-water mixture. The steam-water mixture enters the metal hose 34 through flange 2 33, and then enters the steam-water separator through flange 32. After separation, dry high-pressure or low-pressure steam is output for use in food processing, heating and other scenarios. The separated water is collected in the bottom drain device. The two inlets of the three-way control valve 17 are connected to the drain device and the water supply tank, respectively. By controlling the three-way control valve 17, the mixing ratio between the water in the drain device and the water supply before entering the water pump 16 can be controlled. The mixed water is pumped into the inlet of the energy saver 14 by the water pump 16, thereby achieving the preheating effect of water inside the energy saver 14.

[0053] In this embodiment, the makeup water in the steam generator and the return water in the condensate drain device need to be mixed before entering the economizer 14. The specific reasons are as follows: The return water is high-temperature water condensed from the steam system and contains a large amount of sensible heat. After mixing with the low-temperature makeup water, the initial temperature of the incoming water can be directly increased, reducing the need for the economizer 14 to raise the water temperature to the temperature required by the steam generator. If the makeup water enters the economizer 14 directly without mixing, the water temperature may be too low, causing water vapor and acidic gases such as SO2 in the high-temperature flue gas to condense on the tube bundle surface, leading to corrosion. After mixing, the water temperature increases, ensuring that the tube bundle wall temperature is higher than the acid dew point, extending the equipment life. Typically, the water needs to be softened and deoxygenated, but it may still contain small amounts of calcium and magnesium ions or dissolved salts. The return water, as condensate, has extremely low impurity content. After mixing, it can reduce the overall water hardness and conductivity, reduce the possibility of scaling in the economizer 14 and steam generator, ensure water quality stability, and improve the effect of subsequent water treatment. Finally, the metal parts of the steam generator and economizer 14 are sensitive to sudden temperature changes. If the low-temperature makeup water comes into direct contact with the high-temperature return water, thermal stress may be generated due to the large temperature difference, leading to leakage at the tube bundle expansion joint or metal fatigue. Pre-mixing externally can make the water temperature transition more evenly, reduce the risk of equipment damage, and increase the boiler's energy efficiency.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving boiler steam generator for a vehicle, comprising a boiler drum (11), end covers (12) being fixedly installed at both ends of the boiler drum (11), characterized in that: The heat exchange pipe assembly arranged in the inner portion of the kettle cylinder (11) comprises two support rings (21) which are respectively fixedly connected to the sides of the two end covers (12) facing the kettle cylinder (11), four support plates (23) arranged in a rectangular array between the two support rings (21), the length direction of the support plates (23) being consistent with the axial direction of the support rings (21), a U-shaped elastic sheet (22) fixedly connected to each end of each support plate (23) facing one side of the support ring (21), the opening direction of the U-shaped elastic sheet (22) being consistent with the axial direction of the support ring (21), and each U-shaped elastic sheet (22) being fixedly connected to the outer side of the corresponding support ring (21) away from the support plate (23). The heat exchange pipe assembly further comprises a spiral heat exchange pipe (25), and the spiral cavity of the spiral heat exchange pipe (25) is sleeved outside the array of the four support plates (23). Each support plate (23) is fixedly connected with a limiting block (24) at both ends of the side facing the inner wall of the kettle cylinder (11), and each limiting block (24) is arranged in the corresponding spiral gap of the spiral heat exchange pipe (25).

2. An energy saving boiler for vehicle steam generator according to claim 1, wherein: The elastic connection assembly further comprises an outer pipe two (35) fixedly connected below the kettle cylinder (11), the outer pipe two (35) being aligned with the inlet of the spiral heat exchange pipe (25), a flange plate three (36) fixedly installed at the bottom end of the outer pipe two (35), a metal hose two (38) fixedly connected to the top end of the flange plate three (36), a flange plate four (37) fixedly connected to the top end of the metal hose two (38), and the top end of the flange plate four (37) being fixedly connected with the inlet of the spiral heat exchange pipe (25).

3. The energy-saving boiler steam generator for vehicles according to claim 2, characterized in that: The elastic connection assembly further comprises an outer pipe two (35) fixedly connected below the kettle cylinder (11), the outer pipe two (35) being aligned with the inlet of the spiral heat exchange pipe (25), a flange plate three (36) fixedly installed at the bottom end of the outer pipe two (35), a metal hose two (38) fixedly connected to the top end of the flange plate three (36), a flange plate four (37) fixedly connected to the top end of the metal hose two (38), and the top end of the flange plate four (37) being fixedly connected with the inlet of the spiral heat exchange pipe (25).

4. The energy-saving steam generator for a boiler vehicle according to claim 3, characterized in that: The energy saver (14) is further provided, and the air inlet of the energy saver (14) is connected with the outer pipe one (31), and the water outlet of the energy saver (14) is connected with the bottom end of the flange plate three (36).

5. An energy efficient boiler steam generator for vehicles as claimed in claim 4 wherein: The gas-liquid separator (15) is further provided, and the inlet of the gas-liquid separator (15) is connected with the top end of the flange plate one (32).

6. An energy saving boiler for vehicle steam generator according to claim 5, wherein: The water pump (16) is further provided, the water inlet of the water pump (16) is fixedly connected with a three-way control valve (17), the water return outlet of the gas-liquid separator (15) is connected with the three-way control valve (17), and the water outlet of the water pump (16) is connected with the water inlet of the energy saver (14).

7. An energy saving boiler for vehicle steam generator according to claim 6, wherein: The burner (13) is further provided, and the burner (13) is fixedly installed in the middle portion of one of the end covers (12), and the combustion section of the burner (13) extends into the inner portion of the kettle cylinder (11).

Images