Combustion device for the co-combustion of solid waste in a coal-fired boiler

Abstract

Combustion device for the co-combustion of solid waste in a coal-fired boiler, characterized in that it comprises a combustion chamber (1) wherein a turbine device (2) is attached to one end of the combustion chamber (1); that a first suspension (4) is attached to the combustion chamber (1), wherein a mounting plate (5) is attached to each side of the first suspension (4), which is arranged along the radial direction of the combustion chamber (1); wherein the mounting plates (5) are provided along their longitudinal direction with slots (6) in which sliding pieces (10) are slidably attached, wherein a second suspension (12) is attached to each of the sliding pieces (10); that threaded spindles (7) are screwed into the sliding pieces (10), the outer ends of which are rotatably connected to brackets (8), wherein the brackets (8) are fixedly connected to the outer ends of the mounting plates (5).

Description

Technical area

[0001] The present utility model belongs to the technical field of coal-fired boilers and provides a combustion device for the co-combustion of solid waste in a coal-fired boiler. Background technology

[0002] Combustion devices, which serve as core devices for efficient fuel-air mixing and combustion, are widely used in industrial, civil, and specialized applications. Especially in coal-fired boilers that co-combust solid waste (hereinafter referred to as "solid waste"), specially designed combustion devices play an important role in improving energy efficiency and reducing environmental pollution.

[0003] Due to maintenance, cleaning, and modernization of combustion equipment, these often require lifting. However, the following problems arise: On the one hand, the combustion equipment lacks stability during the lifting process. Traditional combustion equipment for coal-fired boilers that co-incinerate solid waste often focuses on combustion efficiency and durability due to their structure and material selection, resulting in a higher overall weight. When such equipment needs to be transported to a specific location for installation or maintenance, lifting becomes a necessary measure. However, the existing combustion equipment usually has only one or a few lifting points, which cannot provide sufficient stability during lifting.This results in the device being prone to swaying during lifting and transportation, which not only complicates operation but may also damage the device itself or the surrounding environment, compromising operational safety. On the other hand, an effective protection mechanism is lacking. During transportation and lifting, most combustion devices for coal-fired boilers that co-incinerate solid waste lack special protection, which can easily damage the surface of the device, especially critical components such as turbines. Turbines, as central components of the combustion device, require their precision and integrity to determine combustion efficiency and overall performance.Once damaged, it not only impacts combustion efficiency but can cause more serious mechanical failures, increase maintenance costs, and shorten the lifespan of the equipment. Furthermore, the lack of protection can cause the device to age more quickly in harsh environments (e.g., humidity and corrosive environments), further reducing its reliability and durability. Contents of the utility model

[0004] The purpose of the present utility model is to overcome the above-mentioned deficiencies of the prior art, to provide a combustion apparatus for co-combustion of solid waste in a coal-fired boiler to solve the problems of insufficient lifting points, instability of the lifting operation and lack of protective mechanisms during the lifting operation, which makes the apparatus easily damaged by the environment.

[0005] To achieve the above-mentioned purpose, the present utility model adopts the following technical solution: Combustion apparatus for co-combustion of solid waste in a coal-fired boiler, comprising a combustion body, wherein a turbine device is attached to one end of the combustion body; A first hanger is attached to the combustion body, with a mounting plate on each side of the first hanger arranged in the radial direction of the combustion body. Longitudinal slots are provided on the mounting plates, in which sliding pieces are slidably mounted, with a second hanger mounted on the sliding pieces.

[0006] Threaded spindles are screwed into the sliding pieces, the outer ends of which are rotatably connected to brackets, whereby the brackets are firmly connected to the outer ends of the mounting plates.

[0007] Further improvements of the present utility model are as follows: Preferably, the first hanger is firmly attached to the combustion body by a mounting base.

[0008] Preferably, the first hanger is mounted on the vertical centerline of the combustion body, with the two mounting plates aligned symmetrically to the vertical centerline.

[0009] Preferably, the mounting plates are attached to the combustion body by means of several support structures.

[0010] Preferably, the brackets are connected to the ends of the threaded spindles by bearings; the brackets consist of integrally connected and mutually perpendicular cross plates and longitudinal plates, whereby the longitudinal plates are firmly connected to the outer ends of the fastening plates and the cross plates are connected to the undersides of the fastening plates.

[0011] Preferably, a mounting frame is attached to the underside of the outer ends of the mounting plates, with the cross plates being embedded in the mounting frame and connected to the mounting frame by means of screws.

[0012] Preferably, an outer protective casing is mounted at one end of the combustion body to which the turbine device is mounted, the turbine device being located within the outer protective casing.

[0013] Preferably, a fixing ring is mounted on the inner end side of the outer protective casing, a snap ring is mounted on the outer end side of the combustion body to which the turbine device is mounted, and the snap ring and the fixing ring are locked together.

[0014] Preferably, the mounting ring and snap ring are connected by an externally threaded rod and a nut; a sealing ring is mounted between the mounting ring and snap ring. Preferably, a groove is provided at the end of the combustion body remote from the turbine housing, into which an anti-slip mat is glued.

[0015] Compared to the prior art, the present utility model has the following advantageous effects: The present utility model discloses a combustion device for co-combustion of solid waste in a coal-fired boiler. The device comprises a combustion body, on the surface of which a mounting base is firmly attached. The other end of the mounting base is connected to a first hanger, and mounting plates are welded to the surface of the combustion body. Slots are provided in the mounting plates, in which sliding pieces are slidably mounted. A second hanger is mounted on the sliding pieces. Internally threaded holes are provided on the side of the sliding pieces, into which threaded spindles are screwed.

[0016] Bearings are welded onto the lead screws, and the bearings are in turn connected to brackets. The brackets are welded to the outer ends of the mounting plates. During the lifting process, the lead screws can be rotated. The bearings enable stable rotation of the screws, allowing the sliding pieces to move within the slots. This allows the second hanger to be moved until it reaches the desired position. Ropes can then be passed through the first and second hangers to tension the ropes and expand the load-bearing areas of the device during the lifting process. This makes the device more stable during the lifting process and increases stability during use.

[0017] Furthermore, the first hanger is attached to the combustion body by a mounting base, which strengthens the connection between the first hanger and the combustion body.

[0018] Furthermore, the first hanger serves as the central balance point. It is mounted on the vertical centerline of the combustion chamber, with the two mounting plates aligned symmetrically to the vertical centerline, allowing the load on the lifting device to be easily adjusted during the lifting process.

[0019] Furthermore, the mounting plates are attached to the combustion body by means of several support structures. The outer surface of the combustion body is cylindrical, and the support structures have different heights to increase the strength of the connection while also adequately supporting the cantilevered part of the mounting plates.

[0020] The lower outer portion of the mounting plates is connected by a mounting frame and brackets. The brackets also feature vertical plates connected to the outer ends of the mounting plates, further strengthening the connection between the mounting plates and the brackets.

[0021] Furthermore, snap rings are welded to the surface of the combustion body, which accommodate the mounting rings. An external protective casing, which houses the turbine assembly, is mounted on the side surface of the mounting rings. Externally threaded rods are welded to the surface of the snap rings. These rods are passed through the mounting rings and secured with nuts. During transport or lifting, the external protective casing can be used to protect the turbine assembly, preventing damage to the turbine assembly. This increases the protective function during use.

[0022] Furthermore, an anti-slip mat is attached to the end of the combustion body remote from the turbine housing to improve the connection capacity and friction between the combustion body and other devices. Figures Fig. Figure 1 is a schematic structural diagram of the overall structure of the present utility model. Fig. 2 is a schematic structural diagram of the sealing ring of the present utility model. Fig. 3 is a schematic structural diagram of the structure of the fixing plate of the present utility model. Fig. 4 is a schematic structural diagram of the external protection device of the present utility model. Fig. 5 is a schematic structural diagram of the structure of the second hanger of the present utility model. Fig. 6 is an enlarged view of part A in Fig. 2.

[0023] Reference numerals in the figures: 1. Combustion body; 2. Turbine device; 3. Mounting base; 4. First hanger; 5. Mounting plate; 6. Slot; 7. Threaded spindle; 8. Bracket; 9. Bearing; 10. Sliding piece; 11. Internally threaded hole; 12. Second hanger; 13. Mounting frame; 14. Screw; 15. External protective casing; 16. Snap ring; 17. Externally threaded rod; 18. Nut; 19. Mounting ring; 20. Sealing ring; 21. Groove; 22. Anti-slip mat; 23. Turntable; 24. Internal protective structure; 25. Protective container; 26. Support rod. Specific embodiments

[0024] The present utility model is described in more detail below in conjunction with the attached drawings: The exemplary embodiments of the present utility model are described in detail below. Examples of the exemplary embodiments are illustrated in the figures, wherein identical or similar reference numerals throughout designate identical or similar elements or elements with identical or similar functions. The exemplary embodiments described below with reference to the attached drawings are exemplary and serve to explain the present utility model and are not to be understood as limiting the present utility model.

[0025] As already described in the prior art, the following problems arise in practical use with the combustion devices currently on the market for co-incineration of solid waste in coal-fired boilers: Firstly, due to their heavy weight, transporting these devices to a suitable location prior to use requires lifting. However, traditional combustion devices of this type usually have only a single lifting point. During the lifting process, this causes the device to wobble and lacks stability. Secondly, these devices are often not equipped with protective devices, so the device is easily damaged during transport or lifting, especially to the turbine, a precise and sensitive component. Damage to the turbine can significantly impair the functionality of the device and complicate operation.

[0026] To solve the above problems, as in Fig. As shown in Figures 1 to 6, the present utility model discloses a combustion apparatus for co-combustion of solid waste in a coal-fired boiler, comprising a combustion body 1 having a cylindrical shape. A turbine device 2 is mounted on one end of the combustion body 1. The vertical axis of the combustion body 1 is defined as the central axis. On the upper surface of the combustion body 1, a fixing base 3 is fixedly mounted, positioned on the central axis. A first hanger 4 is attached to the upper end of the fixing base 3. Two fixing plates 5 are welded to the upper surface of the combustion body 1. These fixing plates 5 are arranged in the horizontal direction of the combustion body 1 and positioned symmetrically on both sides of the fixing base 3.

[0027] Slots 6 are provided along the length of the mounting plates 5. These slots are open at the outer ends and closed at the inner ends. Sliding pieces 10 are slidably mounted within the slots 6. The sliding pieces 10 are designed to move smoothly, thereby increasing the flexibility and user-friendliness of the device.

[0028] A second hanger 12 is welded to the upper end of the sliding piece 10. On the side of the sliding piece 10 is an internally threaded hole 11 into which a threaded spindle 7 is screwed. The threaded spindle 7 is positioned in the slot 6, with one end guided by the sliding piece 10 and the other end by a bearing 9. The bearing 9 is mounted in the bracket 8. The inner surface of the threaded spindle 7 is firmly welded to the inner surface of the bearing 9, while the outer surface of the bearing 9 is welded to the bracket 8. One end of the bracket 8 is welded to the outer end of the mounting plate 5. By installing the bearing 9, the threaded spindle 7 can be rotated in its position. The bearing 9 enables stable rotation of the spindle 7 while ensuring the stability of the spindle 7 between the sliding piece 10 and the bearing 9. This allows for easy and convenient handling during use.

[0029] Due to the structure described above, the device allows the lead screw 7 to rotate in place during preparation for the lifting operation. Under the action of the bearing 9, the lead screw 7 can rotate stably while the sliding piece 10 is moved through the internally threaded hole 11 within the slot 6. This causes the second hanger 12 to continue moving until it reaches the outermost position. The device can then be lifted by passing a rope through the first hanger 4 and the second hanger 12. By tensioning the rope between the first hanger 4 and the second hanger 12, the load points of the device are expanded during the lifting operation, resulting in increased stability during the lifting operation. The device thus remains extremely stable during the lifting operation and also during use.

[0030] A rotating disk 23 is welded to the outer end of the threaded spindle 7. The second hanger 12 is arranged symmetrically, as is the threaded spindle 7. By installing the rotating disk 23, it can be used as a force point when the threaded spindle 7 needs to be rotated. The rotating disk 23 enables direct rotation of the threaded spindle 7, which significantly simplifies operation.

[0031] Since the combustion body 1 is cylindrical in shape, the outer ends of the mounting plates 5 are self-supporting. Each of these ends is stabilized by several support structures attached to the combustion body 1.

[0032] A mounting frame 13 is welded to the lower end of the outer ends of the mounting plates 5. This mounting frame 13 is rectangular in shape and open at the outer ends. The bracket 8 is arc-shaped and consists of integrally connected transverse and longitudinal plates. Openings are provided in the longitudinal plates for attaching the bearing 9. The transverse plates are inserted into the mounting frame 13 from the outer ends. Screws 14 are mounted within the mounting frame 13 and pass through the transverse plates of the bracket 8. The installation of the mounting frame 13 provides a firm mounting option for the bracket 8, ensuring its stability during use. At the same time, the mounting frame 13 allows for easy disassembly of the bracket 8, further increasing the user-friendliness of the device.

[0033] One end of the combustion body 1 is provided with an outer protective casing 15 which encloses the turbine device 2.

[0034] Furthermore, a snap ring 16 is welded to one end of the combustion body 1. At the other end of the outer protective casing 15, a fastening ring 19 is attached, which fits into the snap ring 16. The turbine device 2 is located within the outer protective casing 15. An externally threaded rod 17 is welded to the end of the snap ring 16. This externally threaded rod 17 penetrates the fastening ring 19, and a nut 18 is mounted on the externally threaded rod 17, one side of which rests against the outer surface of the fastening ring 19.

[0035] By installing the outer protective casing 15, the turbine device 2 is effectively protected during transportation or lifting, so that the turbine device 2 remains protected from impact, which greatly improves the protective function during use.

[0036] Furthermore, an internal protective structure 24 is mounted within the outer protective casing 15. The internal protective structure 24 includes a protective container 25 surrounding the turbine device 2, as well as support rods 26 located on the outside of the protective container 25. The support rods 26 are aligned in the longitudinal direction of the protective container 25 and arranged in a circular shape along the circumference of the protective container 25.

[0037] The interior of the snap ring 16 is lined with a sealing ring 20, which rests against the surface of the mounting ring 19. The externally threaded rod 17 penetrates the sealing ring 20. Installing the sealing ring 20 creates an effective seal between the mounting ring 19 and the snap ring 16, preventing water from penetrating through the connection between the snap ring 16 and the mounting ring 19. This ensures a high level of tightness during use.

[0038] At the other end of the combustion body 1, a groove 21 is provided, into which an anti-slip mat 22 is glued. By installing the anti-slip mat 22, it is positioned at a suitable location between the mounting position and the device after assembly. The anti-slip mat 22 increases the friction between the device and the mounting position, thereby significantly improving the stability of the device after assembly. Furthermore, a connecting flange for securing the combustion device is attached to this end.

[0039] The operating principle of the combustion device for co-combustion of solid waste in a coal-fired boiler is as follows: When using the device, the outer protective casing 15 is first mounted on the combustion body 1. During assembly of the outer protective casing 15, the externally threaded rod 17 is passed through the fastening ring 19. Then, the nut 18 is screwed onto the externally threaded rod 17 until one side of the nut 18 rests against the surface of the fastening ring 19. This fixes the outer protective casing 15 in the snap ring 16, and the turbine device 2 is located inside the outer protective casing 15. In the next step, the device is lifted to a suitable position. A mounting base 3 is firmly attached to the surface of the combustion body 1, the other end of which is connected to a first hanger 4. In addition, mounting plates 5 are welded to the surface of the combustion body 1.The mounting plates 5 have slots 6 in which sliding pieces 10 are inserted. A second hanger 12 is welded to the upper end of the sliding pieces 10. On the side of the sliding pieces 10 there is an internally threaded hole 11 into which a threaded spindle 7 is screwed. A bearing 9 is welded to the threaded spindle 7, which in turn is connected to a bracket 8. One end of the bracket 8 is connected to the outer ends of the mounting plates 5. During the lifting process, the threaded spindle 7 can be rotated. The bearing 9 enables stable rotation of the spindle 7 while the sliding piece 10 is moved within the slot 6. This causes the second hanger 12 to move along the slot 6 until it reaches the outermost position. In the next step, the device can be lifted. A rope is guided through the first hanger 4 and the second hanger 12.By tensioning the rope between hangers 4 and 12, the load is evenly distributed during the lifting process. This ensures increased stability of the device during the lifting process and also during use. During the lifting process, the outer protective housing 15 effectively protects the turbine device 2 from impacts, significantly improving the protective function of the device. After the device has been lifted to the desired location, the nut 18 can be removed and the outer protective housing 15 removed.

[0040] In the description of the present utility model, it is necessary to point out that terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "top," "bottom," "from," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," and "circumferential direction," and the like, have the azimuth or positional relationship based on the drawing. They are intended to provide explanation and simplify the description of the present utility model, rather than indicating or implying that the said device or component must have a specific orientation, be constructed, and operate in a specific orientation. Therefore, they should not be construed as limiting the present utility model.

[0041] Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "multiple" means two or more than two, unless otherwise stated. In the description of the present utility model, it means that if a first feature is "above" or "below" the second feature, the first feature and the second feature are in direct contact, or the first feature and the second feature may not be in direct contact but may be in contact via another feature between them.

[0042] In the description of the present utility model, when the first feature is "on", "over" and "above" with respect to the second feature, it means that the first feature is directly above or diagonally above the second feature, or simply that the horizontal height of the first feature is greater than the horizontal height of the second feature.

[0043] In the present utility model, it is necessary to point out that the terms "assembly," "connection," and "connection" are to be understood in a broad sense unless expressly stated or limited otherwise. For example, it may be a fixed connection, a detachable connection, or a one-piece connection; it may be a mechanical connection or an electrical connection; it may be a direct connection, an indirect connection via an intermediate medium, or a connection within the two elements. For general technical personnel in the field, the specific meaning of the above terms in the present utility model can be understood depending on the specific circumstances.In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," or the like, means that the particular features, structures, materials, or properties associated with the embodiment or example are included in at least one embodiment or example of this utility model. In the present description, exemplary representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or properties may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although the embodiments of the present utility model have been shown and described, it will be understood by a general technical person in the art that several variations, modifications, substitutions and variants can be made to these embodiments without departing from the principle and purpose of the present utility model, and the scope of the present utility model is limited by the claims and their equivalents.

[0045] The foregoing is only a preferred embodiment of the present utility model and is not intended to limit the present utility model, and any modification, equivalent substitution, improvement, etc. made within the spirit and principles of the present utility model falls within the scope of protection of the present utility model.

Claims

[1] Combustion device for co-combustion of solid waste in a coal-fired boiler, characterized by that it comprises a combustion body (1), wherein a turbine device (2) is attached to one end of the combustion body (1); that a first hanger (4) is attached to the combustion body (1), wherein a fastening plate (5) is attached to each of the two sides of the first hanger (4), which fastening plate is arranged along the radial direction of the combustion body (1); wherein the fastening plates (5) are provided with slots (6) along their longitudinal direction, in which sliding pieces (10) are slidably fastened, wherein a second hanger (12) is attached to each of the sliding pieces (10); that threaded spindles (7) are screwed into the sliding pieces (10), the outer ends of which are rotatably connected to holders (8), wherein the holders (8) are firmly connected to the outer ends of the fastening plates (5). [2] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 1, characterized by that the first hanger (4) is firmly attached to the combustion body (1) by means of a fastening base (3). [3] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 1, characterized by that the first hanger (4) is mounted on the vertical center plane of the combustion body (1) and the two fixing plates (5) are aligned symmetrically to the vertical center plane. [4] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 1, characterized by that the fastening plates (5) are attached to the combustion body (1) by several support structures. [5] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 1, characterized bythat the holders (8) are connected to the ends of the threaded spindles (7) via bearings (9); that the holders (8) comprise transverse plates and perpendicular plates which are integrally connected to one another, the vertical plates being firmly connected to the outer ends of the fastening plates (5) and the transverse plates being connected to the undersides of the fastening plates (5). [6] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 5, characterized by that a fastening frame (13) is attached to the underside of the outer ends of the fastening plates (5), wherein the transverse plates are embedded in the fastening frame (13) and are connected to the fastening frame (13) by means of screws (14). [7] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 1, characterized bythat an outer protective housing (15) is attached to the end of the combustion body (1) to which the turbine device (2) is attached, wherein the turbine device (2) is located within the outer protective housing (15). [8] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 7, characterized by that a fastening ring (19) is attached to the inner end face of the outer protective casing (15), wherein a snap ring (16) is attached to the outer end face of the combustion body (1), where the turbine device (2) is attached, and the snap ring (16) and the fastening ring (19) are locked together. [9] Combustion apparatus for co-combustion of solid waste in a coal-fired boiler according to claim 8, characterized bythat the fastening ring (19) and the snap ring (16) are connected to one another by an externally threaded rod (17) and a nut (18); wherein a sealing ring (20) is arranged between the fastening ring (19) and the snap ring (16). [10] Combustion device for co-combustion of solid waste in a coal-fired boiler according to one of claims 1 to 9, characterized by that at the end of the combustion body (1) facing away from the turbine device (2) there is a groove (21) in which an anti-slip mat (22) is glued.

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