Steam waste heat boiler

Abstract

The utility model belongs to the technical field of waste heat recycling, and particularly relates to a steam waste heat boiler which comprises a supporting frame, a boiler body, a top boiler barrel, a plurality of upper boiler barrels, a plurality of pairs of U-shaped rods, a plurality of lower boiler barrels, a plurality of pairs of elastic supporting pieces, a slag discharging hopper, a plurality of conveying pipes, a plurality of heat exchange pipes and a plurality of lower conveying pipes. The two ends of the upper boiler barrel are hung below the two second cross beams respectively through the U-shaped rods, and then the two ends of the lower boiler barrel are flexibly supported on the two third cross beams respectively through the elastic supporting pieces, so that the boiler body is fixed and supported; by means of the characteristics that the U-shaped rod allows the upper boiler barrel to slightly displace during thermal expansion and cold contraction and the elastic supporting piece absorbs displacement of the lower boiler barrel and buffers stress, thermal expansion and cold contraction caused by temperature changes in the operation process of the boiler can be adapted, and therefore damage of displacement and stress to the boiler structure is dispersed and reduced; and the stability and the safety of the whole structure of the boiler are ensured.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat recovery and utilization technology, specifically relating to a steam waste heat boiler. Background Technology

[0002] Waste heat boilers are key heat energy conversion equipment in industrial production, capable of converting waste heat generated during industrial production into steam. They are widely used in many industries such as steel, chemical, building materials, and power, and are of great significance for improving energy efficiency, reducing production costs, and reducing environmental pollution.

[0003] During operation, the steam waste heat boiler continuously absorbs and releases heat. Its components will expand and contract due to temperature changes. This periodic change will cause displacement and stress in the boiler structure.

[0004] Currently, rigid support structures are mostly used between the boiler body and the supporting frame of steam waste heat boilers. However, such rigid supports cannot adapt to the dimensional changes of components during thermal expansion and contraction, and will further concentrate stress, thereby accelerating structural failure. Moreover, rigid supports are also prone to fatigue damage when subjected to alternating stress for a long time, leading to increased maintenance and replacement costs. Utility Model Content

[0005] The purpose of this invention is to provide a steam waste heat boiler that solves the technical problem that existing technologies cannot adapt to thermal expansion and contraction, which leads to boiler structural damage.

[0006] This utility model discloses a steam waste heat boiler, comprising:

[0007] The supporting frame includes a first crossbeam, a second crossbeam, and a third crossbeam arranged from top to bottom;

[0008] The furnace body has a heat exchange chamber inside, which is arranged inside the supporting frame. It has a flue gas inlet at the lower end of one side and a flue gas outlet at the upper end of the other side.

[0009] The top pot drum is located above the furnace body, and each end is installed on a first crossbeam;

[0010] Multiple upper boiler drums are installed horizontally at intervals on the top of the furnace body and partially embedded in the heat exchange chamber, with both ends of the upper boiler drums extending to the outside of the furnace body;

[0011] Multiple pairs of U-shaped rods correspond one-to-one with the upper pot drum, and each pair of U-shaped rods is respectively sleeved on both ends of the upper pot drum and each is connected to a second crossbeam;

[0012] Multiple lower drums, corresponding one-to-one with the upper drum, are arranged laterally at intervals at the lower end of the heat exchange chamber, and both ends of the lower drums extend out of the outside of the furnace body.

[0013] Multiple pairs of elastic support members are provided, each corresponding to one of the lower pot drums, and each pair of elastic support members is respectively provided at both ends of the bottom of the corresponding lower pot drum and is installed on one of the third crossbeams.

[0014] A slag discharge hopper is installed at the bottom of the furnace body;

[0015] The furnace includes multiple conveying pipes between the top boiler drum and the upper boiler drum, multiple heat exchange pipes between the upper boiler drum and the lower boiler drum in the heat exchange chamber, and multiple lower conveying pipes between the upper boiler drum and the lower boiler drum outside the furnace body.

[0016] This application uses U-shaped rods to suspend both ends of the upper boiler drum from two second crossbeams, and then uses elastic supports to flexibly support both ends of the lower boiler drum from two third crossbeams. This provides fixation and support for the boiler body, and thanks to the U-shaped rods that allow for minor displacement of the upper boiler drum during thermal expansion and contraction, and the elastic supports that absorb displacement of the lower boiler drum and buffer stress, it can adapt to thermal expansion and contraction caused by temperature changes during boiler operation. This disperses and reduces the damage to the boiler structure caused by displacement and stress, ensuring the stability and safety of the overall boiler structure.

[0017] Based on the above technical solution, the solution of this application can be further improved as follows:

[0018] Preferably, the elastic support member comprises:

[0019] The support column is installed at the bottom of the lower drum;

[0020] The skateboard is installed at the bottom of the support column;

[0021] A sleeve is vertically slidably fitted onto the outside of the slide plate;

[0022] A base plate is located at the bottom end of the sleeve and installed on the top of the third crossbeam;

[0023] A spring is arranged inside the sleeve and constrained between the sliding plate and the base plate. This design ensures accurate displacement direction through the cooperation of the sleeve and the sliding plate, and provides stable support through the base plate. Therefore, it has the advantages of high structural stability, and the structure is relatively simple, easy to disassemble and install, reducing maintenance costs and the impact on the normal operation of the boiler.

[0024] Preferably, the two ends of the U-shaped rod pass through the second crossbeam from bottom to top and are threaded with several nuts. This solution not only achieves a stable connection, ensuring the stability of the upper drum suspension and the reliable operation of the boiler structure, but also has flexible adjustability, allowing for adjustment of the preload and height according to actual needs; it can also distribute the force to avoid stress concentration and extend the service life of the connection parts; and it is convenient to install and maintain, reducing the difficulty and cost of operation.

[0025] Preferably, the cross-section of the second crossbeam is I-shaped; multiple reinforcing plates are provided on the inner side of the second crossbeam, and the reinforcing plates are located on both sides of the U-shaped rod; with this solution, it has good bending resistance and structural strength, can better withstand various loads, and can enhance the strength and stiffness of the second crossbeam in key stress parts, reduce the risk of deformation or damage caused by excessive local stress on the crossbeam, and improve the stability and safety of the entire boiler support structure.

[0026] Preferably, it includes:

[0027] Multiple dust removal pipes are vertically spaced outside the side wall of the furnace body and connected to the heat exchange chamber. This solution expands the contact coverage between the dust removal pipes and the heat exchange chamber, more fully removes the dust adhering to the heat exchange chamber, reduces damage to the furnace structure caused by dust corrosion and wear, extends the service life of the furnace body and related components, and reduces equipment maintenance costs.

[0028] Preferably, a first manhole cover is installed on the outside of the slag discharge hopper, and an opening and closing valve is installed at the bottom of the slag discharge hopper. This solution provides workers with a passage to enter the slag discharge hopper for inspection, cleaning, or maintenance, and can precisely control the slag discharge action of the slag discharge hopper, which not only ensures the safety and stability of boiler operation, but also improves the flexibility and convenience of operation.

[0029] Preferably, a second manhole cover is provided at one end of the top drum, a third manhole cover is provided at one end of the upper drum, and a fourth manhole cover is provided at one end of the lower drum. This solution provides workers with access to the inside of the drum, facilitating regular inspections of the drum's interior, thereby improving the convenience and safety of maintenance and repair, and enhancing the reliability and stability of boiler operation.

[0030] Through the above technical solution, this utility model achieves the following beneficial effects:

[0031] 1. This application uses U-shaped rods to suspend the two ends of the upper boiler drum under two second crossbeams, and then uses elastic supports to flexibly support the two ends of the lower boiler drum on two third crossbeams. This provides fixation and support for the boiler body, and with the characteristics of the U-shaped rods allowing for small displacements of the upper boiler drum during thermal expansion and contraction, and the elastic supports absorbing the displacement of the lower boiler drum and buffering stress, it can adapt to the thermal expansion and contraction caused by temperature changes during boiler operation, thereby dispersing and reducing the damage of displacement and stress to the boiler structure, and ensuring the stability and safety of the overall boiler structure.

[0032] 2. By installing dust removal pipes, this application utilizes airflow impact to thoroughly blow away dust adhering to various parts of the heat exchange chamber that is difficult to clean using conventional methods. This effectively improves the dust removal effect, ensures the cleanliness of the heat exchange chamber, and expands the contact coverage between the dust removal pipes and the heat exchange chamber through vertical spacing, thus more fully removing the dust adhering to the heat exchange chamber. This reduces damage to the furnace structure caused by dust corrosion and wear, extends the service life of the furnace body and related components, and reduces equipment maintenance costs. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the steam waste heat boiler described in a specific embodiment of the present utility model;

[0035] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Support frame; 2. Furnace body; 3. Top drum; 4. Upper drum; 5. U-shaped rod; 6. Lower drum; 7. Elastic support component; 8. Slag discharge hopper; 9. Conveying pipe; 10. Lower conveying pipe; 11. Nut; 12. Reinforcing plate; 13. Dust removal pipe;

[0039] 101. First crossbeam; 102. Second crossbeam; 103. Third crossbeam; 21. Flue gas inlet; 22. Flue gas outlet; 31. Second manhole cover; 41. Third manhole cover; 61. Fourth manhole cover; 71. Support column; 72. Slide plate; 73. Sleeve; 74. Base plate; 75. Spring; 81. First manhole cover; 82. Opening and closing valve. Detailed Implementation

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0041] First, it should be noted that some directional terms used in the following description to clearly illustrate the technical solution of this utility model, such as the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," are all derived from the normal orientation of components in a steam waste heat boiler. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0045] Example:

[0046] like Figure 1As shown in the figure, this application discloses a steam waste heat boiler, which is used to convert the waste heat of flue gas into steam and can effectively adapt to thermal expansion and contraction, thereby reducing the damage of displacement and stress to the boiler structure. Its specific structure includes: a support frame 1, a furnace body 2, a top drum 3, multiple upper drums 4, multiple pairs of U-shaped rods 5, multiple lower drums 6, multiple pairs of elastic support members 7, a slag discharge hopper 8, multiple conveying pipes 9, multiple heat exchange tubes (not shown in the figure) and multiple lower conveying pipes 10.

[0047] The support frame 1 is used to provide stable support and bear various loads during boiler operation. It includes a first crossbeam 101, a second crossbeam 102 and a third crossbeam 103 arranged from top to bottom, which can bear the weight of each component and various forces generated during operation.

[0048] The furnace body 2 is the main place for heat exchange between flue gas and working fluid. It has a heat exchange chamber (not shown in the figure) inside and is arranged inside the support frame 1. It has a flue gas inlet 21 at the lower end of one side and a flue gas outlet 22 at the upper end of the other side.

[0049] The top pot cylinder 3 is located above the furnace body 2, and each end is installed on a first crossbeam 101, which is used to collect and distribute the working fluid.

[0050] Multiple upper boiler drums 4 are installed horizontally at intervals on the top of the furnace body 2 and partially embedded in the heat exchange chamber, with both ends of the upper boiler drums 4 extending to the outside of the furnace body 2.

[0051] Multiple pairs of U-shaped rods 5 correspond one-to-one with the upper boiler drum 4, and each pair of U-shaped rods 5 is respectively sleeved on both ends of the upper boiler drum 4 and each is connected to a second crossbeam 102; they play a fixing and supporting role, which can allow the upper boiler drum 4 to a certain extent to undergo small displacement due to thermal expansion, while limiting its excessive displacement, avoiding deformation or damage to the upper boiler drum 4 due to thermal stress, ensuring that the main body of the boiler drum maintains a relatively stable position during thermal expansion and contraction, and ensuring the stability and safety of the overall boiler structure.

[0052] Multiple lower boiler drums 6 correspond one-to-one with upper boiler drums 4 and are arranged laterally at intervals at the lower end of the heat exchange chamber, with both ends of the lower boiler drums 6 extending outward from the outside of the furnace body 2.

[0053] Multiple pairs of elastic support members 7 correspond one-to-one with the lower boiler drum 6, and each pair of elastic support members 7 is respectively located at both ends of the bottom of the corresponding lower boiler drum 6 and is installed on a third crossbeam 103. They are used to absorb the displacement of the boiler body caused by thermal expansion and always provide stable support, ensuring the boiler body's ability to adapt to thermal expansion and contraction.

[0054] The slag hopper 8 is installed at the bottom of the furnace body 2 to collect and discharge solid waste such as slag generated during boiler operation, keep the inside of the furnace clean, and ensure the normal operation of the boiler.

[0055] Among them, multiple conveying pipes 9 are provided between the top boiler drum 3 and the upper boiler drum 4, multiple heat exchange pipes are provided between the upper boiler drum 4 and the lower boiler drum 6 in the heat exchange chamber, and multiple lower conveying pipes 10 are provided between the upper boiler drum 4 and the lower boiler drum 6 outside the furnace body 2.

[0056] This invention uses U-shaped rods 5 to suspend the two ends of the upper boiler drum 4 under two second crossbeams 102, and then uses elastic support members 7 to flexibly support the two ends of the lower boiler drum 6 on two third crossbeams 103. This provides fixation and support for the boiler body, and thanks to the characteristics of the U-shaped rods 5 allowing for slight displacement of the upper boiler drum 4 during thermal expansion and contraction, and the elastic support members 7 absorbing the displacement of the lower boiler drum 6 and buffering stress, it can adapt to the thermal expansion and contraction caused by temperature changes during boiler operation. This disperses and reduces the damage to the boiler structure caused by displacement and stress, ensuring the stability and safety of the overall boiler structure.

[0057] In some embodiments, such as Figure 2 As shown, the elastic support 7 includes: a support column 71, a sliding plate 72, a sleeve 73, a base plate 74, and a spring 75, and its specific configuration is as follows:

[0058] The support column 71 is installed at the bottom of the lower drum 6 to provide a connection point with the lower drum 6;

[0059] The slide plate 72 is mounted on the bottom of the support column 71 and serves as a key component for sliding within the sleeve 73;

[0060] The sleeve 73 is vertically slidably fitted onto the outside of the slide plate 72 to guide the slide plate 72 to move vertically;

[0061] The base plate 74 is located at the bottom end of the sleeve 73 and installed on the top of the third crossbeam 103 to provide stable foundation support;

[0062] Spring 75 is arranged inside sleeve 73 and constrained between slide plate 72 and base plate 74 to provide elastic cushioning support.

[0063] When the boiler is running, the boiler drum body expands downward due to thermal expansion caused by the increase in temperature. The lower boiler drum 6 will drive the support column 71 and the sliding plate 72 to move downward, thus compressing the spring 75 in the sleeve 73. The elastic deformation of the spring 75 absorbs the displacement of the lower boiler drum 6 and converts the thermal stress into the elastic potential energy of the spring, thereby preventing the boiler body from generating excessive stress and being damaged.

[0064] When the temperature drops, the boiler drum body contracts, and the spring 75 releases its elastic potential energy, pushing the slide plate 72 and the support column 71 to move upward, so that the lower boiler drum 6 returns to the appropriate position. This provides flexible support for the lower boiler drum 6 at all times, effectively adapting to thermal expansion and contraction, reducing displacement and stress damage to the boiler structure, and ensuring stable boiler operation.

[0065] The aforementioned further design of the elastic support 7, through the cooperation of the sleeve 73 and the sliding plate 72, ensures accurate displacement direction and provides stable support through the fixing of the base plate 74. It has the advantages of high structural stability, and the structure is relatively simple, easy to disassemble and install, reducing maintenance costs and the impact on the normal operation of the boiler.

[0066] In some embodiments, such as Figure 3 As shown, the two ends of the U-shaped rod 5 pass through the second crossbeam 102 from bottom to top and are threaded with several nuts 11.

[0067] The above setup not only achieves a stable connection through multiple nuts 11, ensuring the stability of the upper drum 4 suspension and the reliable operation of the boiler structure; it also provides flexible adjustability, allowing for adjustment of the preload and height according to actual needs; it can also distribute the force to avoid stress concentration and extend the life of the connection parts; and it is convenient to install and maintain, reducing the difficulty and cost of operation.

[0068] Based on the above embodiments, such as Figure 3 As shown, the cross-section of the second crossbeam 102 is I-shaped; multiple reinforcing plates 12 are provided on the inner side of the second crossbeam 102, and the reinforcing plates 12 are located on both sides of the U-shaped rod 5.

[0069] By adopting an I-shaped cross-section design for the second crossbeam 102, it can have better bending resistance and structural strength, and better withstand various loads. Furthermore, by setting multiple reinforcing plates 12, the strength and rigidity of the second crossbeam 102 in key stress-bearing parts can be enhanced. This not only helps to more stably support the U-shaped rod 5 and ensure the reliability of the upper boiler drum 4 suspension, but also disperses and bears the stress transmitted from the U-shaped rod 5, reducing the risk of deformation or damage caused by excessive local stress on the crossbeam, and improving the stability and safety of the entire boiler support structure.

[0070] In some embodiments, such as Figure 2 As shown, it includes: multiple dust removal pipes 13, which are vertically spaced outside the side wall of the furnace body 2 and communicate with the heat exchange chamber.

[0071] During dust removal, the dust removal pipe 13 is connected to an external blowing device, and the airflow enters the heat exchange chamber through the dust removal pipe 13. Then, with the strong airflow impact force, the dust attached to various parts of the heat exchange chamber that is difficult to clean by conventional methods is completely blown off, effectively improving the dust removal effect and ensuring the cleanliness of the heat exchange chamber.

[0072] The vertical spacing arrangement described above can expand the contact coverage between the dust removal pipe 13 and the heat exchange chamber, more fully remove the dust attached to the heat exchange chamber, reduce the damage to the furnace structure caused by dust corrosion and wear, extend the service life of the furnace body 2 and related components, and reduce equipment maintenance costs.

[0073] In some embodiments, such as Figure 1 As shown, a first manhole cover 81 is installed on the outside of the slag discharge hopper 8, and an opening and closing valve 82 is installed at the bottom of the slag discharge hopper 8.

[0074] Specifically, there are two first manhole covers 81, which are symmetrically arranged on both sides of the ash discharge hopper 8, making it convenient for multiple workers to use; there are two on / off valves 82, one a manual valve and the other an electric valve, which are used to automate the ash discharge process through the boiler control system under normal conditions, while the manual valve can be used as a backup operation to cut off the ash discharge channel in case the electric valve fails.

[0075] The first manhole cover 81 provides staff with access to the slag discharge hopper 8 for inspection, cleaning, or maintenance, facilitating timely handling of potential blockages and slag buildup within the slag discharge hopper 8 and ensuring smooth slag discharge. The on / off valve 82 allows for precise control of the slag discharge action of the slag discharge hopper 8, ensuring both the safety and stability of boiler operation and improving operational flexibility and convenience.

[0076] In some embodiments, such as Figure 1 As shown, the top pot cylinder 3 is provided with a second manhole cover 31 at one end, the upper pot cylinder 4 is provided with a third manhole cover 41 at one end, and the lower pot cylinder 6 is provided with a fourth manhole cover 61 at one end.

[0077] The above-mentioned setup provides staff with access to the boiler drum, facilitating regular inspections and improving the convenience and safety of maintenance and repair, thereby enhancing the reliability and stability of boiler operation.

[0078] The working principle of this application is as follows:

[0079] High-temperature flue gas enters the heat exchange chamber from the flue gas inlet 21 at the lower end of one side of the furnace body 2, then flows vertically upward in the heat exchange chamber, and its temperature decreases after sufficient heat exchange with the water in the heat exchange tube. Finally, it is discharged from the flue gas outlet 22 at the upper end of the other side of the furnace body 2.

[0080] Meanwhile, water enters the top drum 3 from an external water source and is then distributed to each upper drum 4 through the conveying pipe 9. The water in the upper drum 4 then flows to the corresponding lower drum 6 through the external lower conveying pipe 10, and then flows back to the upper drum 4 through multiple heat exchange tubes in the heat exchange chamber. During this process, it exchanges heat with the high-temperature flue gas, so some of the water is heated and vaporized to form a steam-water mixture. The steam and water are separated in the upper drum 4, and the separated steam floats to the top drum 3 through the conveying pipe 9. The steam is then drawn out from the top drum 3 through the pipeline for industrial production or other purposes, while the separated water continues to participate in the water cycle.

[0081] The ash and slag produced during the operation of the furnace body 2 fall into the slag discharge hopper 8 and are cleaned regularly.

[0082] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A steam waste heat boiler, characterized in that, include: The supporting frame includes a first crossbeam, a second crossbeam, and a third crossbeam arranged from top to bottom; The furnace body has a heat exchange chamber inside, which is arranged inside the supporting frame. It has a flue gas inlet at the lower end of one side and a flue gas outlet at the upper end of the other side. The top pot drum is located above the furnace body, and each end is installed on a first crossbeam; Multiple upper boiler drums are installed horizontally at intervals on the top of the furnace body and partially embedded in the heat exchange chamber, with both ends of the upper boiler drums extending to the outside of the furnace body; Multiple pairs of U-shaped rods correspond one-to-one with the upper pot drum, and each pair of U-shaped rods is respectively sleeved on both ends of the upper pot drum and each is connected to a second crossbeam; Multiple lower drums, corresponding one-to-one with the upper drum, are arranged laterally at intervals at the lower end of the heat exchange chamber, and both ends of the lower drums extend out of the outside of the furnace body. Multiple pairs of elastic support members are provided, each corresponding to one of the lower pot drums, and each pair of elastic support members is respectively provided at both ends of the bottom of the corresponding lower pot drum and is installed on one of the third crossbeams. A slag discharge hopper is installed at the bottom of the furnace body; The furnace includes multiple conveying pipes between the top boiler drum and the upper boiler drum, multiple heat exchange pipes between the upper boiler drum and the lower boiler drum in the heat exchange chamber, and multiple lower conveying pipes between the upper boiler drum and the lower boiler drum outside the furnace body.

2. The steam waste heat boiler according to claim 1, characterized in that, The elastic support member includes: The support column is installed at the bottom of the lower drum; The skateboard is installed at the bottom of the support column; A sleeve is vertically slidably fitted onto the outside of the slide plate; A base plate is located at the bottom end of the sleeve and installed on the top of the third crossbeam; A spring is arranged inside the sleeve and constrained between the slide plate and the base plate.

3. The steam waste heat boiler according to claim 1, characterized in that, The two ends of the U-shaped rod pass through the second crossbeam from bottom to top and are threaded with several nuts.

4. The steam waste heat boiler according to claim 3, characterized in that, The second crossbeam has an I-shaped cross-section; multiple reinforcing plates are provided on the inner side of the second crossbeam, and the reinforcing plates are located on both sides of the U-shaped rod.

5. The steam waste heat boiler according to claim 1, characterized in that, include: Multiple dust removal pipes are vertically spaced outside the side wall of the furnace body and are connected to the heat exchange chamber.

6. The steam waste heat boiler according to claim 1, characterized in that, The slag discharge hopper is equipped with a first manhole cover on its outer side, and an opening and closing valve is installed at the bottom of the slag discharge hopper.

7. The steam waste heat boiler according to claim 1, characterized in that, The top pot cylinder is provided with a second manhole cover at one end, the upper pot cylinder is provided with a third manhole cover at one end, and the lower pot cylinder is provided with a fourth manhole cover at one end.

Images