Sealed ash smashing device for gasification furnace

Abstract

The utility model discloses a gasification furnace sealing ash smashing device which comprises an ash smashing rod, a sealing pipe and a slag breaking assembly, the sealing pipe is fixed to a gasification furnace through a connecting piece, and the ash smashing rod penetrates through the sealing pipe and can move relative to the sealing pipe; the two ends of the ash smashing rod penetrate out of the sealing pipe, and a sealing structure is arranged between the sealing pipe and the ash smashing rod. The slag breaking assembly is installed at one end of the ash smashing rod and used for breaking ash slag. Leakage contact between the gasification furnace and the outside can be effectively avoided, the function of breaking caked slag is achieved by means of external force, and the device is simple in structure, low in cost and particularly suitable for sealed ash smashing of gasification furnace equipment.

Description

Technical Field

[0001] This application relates to the field of pyrolysis gasification technology, specifically to a gasifier sealing and ash-tamping device. Background Technology

[0002] Pyrolysis gasification, as a method of resource utilization for biomass and municipal solid waste, is a technology that converts biomass and municipal solid waste into gaseous fuels. The gaseous fuel produced through pyrolysis gasification can be used as an energy medium for power generation and heating, offering advantages in both energy conservation and emission reduction compared to traditional energy sources. However, the gasifier generates a certain amount of ash during operation, especially when the feedstock is municipal solid waste. Due to the continuous decrease in temperature within the ash chamber of the gasifier, ash agglomeration occurs, affecting the smooth discharge of ash and impacting the continuous operation of the gasifier.

[0003] Patent CN210048718U discloses a slag-breaking device for a gasifier, comprising an upper annular ring, a lower annular ring, and at least one intermediate annular ring located between the upper and lower annular rings. The upper, intermediate, and lower annular rings have progressively larger diameters from top to bottom and are arranged coaxially at intervals to form a frustum structure. Pointed upwards are distributed on the upper, intermediate, and lower annular rings and the vertical ribs. This device can break up large pieces of ash slag when they fall, effectively preventing ash slag accumulation.

[0004] However, this device relies on the impact force generated when the ash falls and collides with an upward-pointing sharp object under its own gravity to break it. This means that when the ash is hard or the falling speed is not high enough, the impact force is insufficient, which affects the breaking effect of the ash and may still cause it to accumulate. Utility Model Content

[0005] Therefore, this application provides a gasifier sealing and ash-tamping device to solve the problem of ash and slag agglomeration causing poor discharge in the prior art.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A gasifier sealing and ash-breaking device includes an ash-breaking rod, a sealing tube, and a slag-breaking component. The sealing tube is fixed to the gasifier by a connector. The ash-breaking rod passes through the sealing tube and is movable relative to the sealing tube. Both ends of the ash-breaking rod extend beyond the sealing tube, and a sealing structure is provided between the sealing tube and the ash-breaking rod. The slag-breaking component is installed at one end of the ash-breaking rod and is used to break up the ash and slag.

[0008] Optionally, the sealing structure includes a groove and a sealing ring. The groove is circumferentially formed on the mortar rod, and its position corresponds to the position of the sealing tube. The sealing ring is embedded in the groove, and the outer diameter of the sealing ring is larger than the inner diameter of the sealing tube.

[0009] Optionally, the sealing ring is provided with an opening.

[0010] Optionally, multiple sets of the sealing structure are provided along the axial direction of the mortar rod.

[0011] Optionally, the openings of the plurality of sealing rings are staggered relative to each other in the axial direction of the mortar rod.

[0012] Optionally, limit rings are fixed at both ends of the sealing tube, and the inner diameter of the limit rings is smaller than the diameter of the mortar rod.

[0013] Optionally, the slag breaking assembly includes a connecting elbow and a slag breaking hook. The main body of the connecting elbow is bent, with one end connected to a mortar rod and the other end connected to the slag breaking hook.

[0014] Optionally, three slag-breaking hooks are provided. The middle slag-breaking hook is straight, while the two side slag-breaking hooks are bent to the sides near the connecting bend, and the sides away from the connecting bend face the same direction as the middle slag-breaking hook.

[0015] Optionally, the connector is a flange.

[0016] Optionally, a handle is provided at the end of the ash-tamping rod away from the slag-breaking assembly.

[0017] Compared with the prior art, this application has at least the following beneficial effects:

[0018] 1. When external force is applied manually to make the ash-tamping rod reciprocate inside the sealed tube, the ash-breaking component can be used to break up the compressed and agglomerated ash. The external force can achieve a better crushing effect, thereby solving the problem of poor ash discharge caused by ash agglomeration during the continuous operation of the gasifier, and ensuring the long-term continuous operation of the gasifier.

[0019] 2. With the synergistic effect of the multi-stage sealing structure and sealing pipe, leakage contact between the gasifier and the outside world can be effectively avoided, ensuring that the gasifier operates under strict sealing conditions during ash breaking and slag removal, thus providing excellent safety.

[0020] 3. The setting of the limiting ring restricts the range of motion of the tamping rod, so that the sealing structure always stays inside the sealing tube no matter how the tamping rod moves, ensuring good sealing performance. Attached Figure Description

[0021] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0022] Figure 1 A cross-sectional view of a gasifier sealing and ash-tamping device provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of a gasifier sealing and ash-tamping device provided in an embodiment of this application;

[0024] Figure 3 for Figure 1 A partial structural diagram of the mortar tamping rod;

[0025] Figure 4 for Figure 1 Schematic diagram of the middle sealing ring;

[0026] Figure 5 This is a schematic diagram showing the usage state of a gasifier sealing and ash-tamping device provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Mortar rod; 2. Connector; 3. Sealing pipe; 4. Connecting elbow; 5. Slag hook; 6. Limiting ring; 7. Sealing ring; 8. Handle; 9. Groove; 10. Opening; 11. Ash chamber; 12. Ash outlet. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of this application: unless otherwise stated, "multiple" means two or more. Expressions such as "including," "comprising," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0031] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0032] A gasifier sealing and ash-tamping device, as described in the reference Figure 1 , Figure 2 and Figure 5The system includes a slagging rod 1, a sealing tube 3, and a slag-breaking assembly. The sealing tube 3 is fixed to the gasifier via a connector 2, and the slagging rod 1 passes through the sealing tube 3 and is movable relative to the sealing tube 3. Both ends of the slagging rod 1 extend beyond the sealing tube 3, and a sealing structure is provided between the sealing tube 3 and the slagging rod 1.

[0033] Reference Figure 3 and Figure 4 Specifically, the sealing structure includes a groove 9 and a sealing ring 7. The groove 9 is circumferentially formed on the tamping rod 1, and its position corresponds to the position of the sealing tube 3, so that the groove 9 can be inside the sealing tube 3 when the tamping rod 1 is moving. The sealing ring 7 is a metal elastic ring with a large outward expansion and deformation capacity, which is embedded in the groove 9. In order to ensure the sealing performance, the outer diameter of the sealing ring 7 is larger than the inner diameter of the sealing tube 3, so that the outer wall of the sealing ring 7 is in active contact with the inner wall of the sealing tube 3 and exerts a certain compressive force on the inner wall of the sealing tube 3. The sealing tube 3 achieves sealing when the tamping rod 1 reciprocates by compressing the sealing ring 7.

[0034] To facilitate the disassembly and assembly of the sealing ring 7, an opening 10 is provided on one side of the sealing ring 7, allowing the sealing ring 7 to be slightly deformed and opened. The width of the opening 10 is 2mm.

[0035] To improve sealing performance, multiple sets of sealing structures are arranged along the axial direction of the tamping rod 1. This application has three sets, and during assembly, the openings 10 of two adjacent sealing rings 7 are staggered by 180°.

[0036] Reference Figure 1 and Figure 2 A limiting ring 6 is fixed at both ends of the sealing pipe 3. The inner diameter of the limiting ring 6 is slightly smaller than the diameter of the tamping rod 1. On the one hand, the sealing performance is improved by the compression between the limiting ring 6 and the tamping rod 1. On the other hand, when the tamping rod 1 moves, the sealing ring 7 on it will move axially upward with the movement of the tamping rod 1. Since the inner diameter of the limiting ring 6 is smaller than the diameter of the tamping rod 1, it can block the sealing ring 7, allowing the sealing structure to reciprocate within the space between the two limiting rings 6, further improving the reliability of the seal.

[0037] For ease of operation, a handle 8 is provided at the end of the ash-tamping rod 1 away from the slag-breaking component for easy gripping.

[0038] The slag-breaking assembly is installed at one end of the ash-tamping rod 1 and is used to crush the ash and slag. Specifically, the slag-breaking assembly includes a connecting elbow 4 and a slag-breaking hook 5. The main body of the connecting elbow 4 is bent to facilitate the angle of the slag-breaking hook 5 with the slag outlet of the gasifier, making crushing easier. The bending angle of the connecting elbow 4 can be determined according to the actual situation. In this embodiment, the bending angle of the connecting elbow 4 is 60°.

[0039] There are three slag-breaking hooks 5. The middle slag-breaking hook 5 is straight, while the two side slag-breaking hooks 5 are bent to the sides near the connecting elbow 4, and the parts away from the connecting elbow 4 are aligned with the middle slag-breaking hook 5.

[0040] In this application, the connector 2 is a flange, which can be welded and fixed together with the sealing pipe 3, and can be installed in conjunction with the ash-removing port reserved in the gasifier through the flange, making disassembly convenient.

[0041] The implementation principle of this application embodiment is as follows: When ash discharge is obstructed due to ash caking during the operation of the gasifier, ash breaking and discharge work is required. The operator applies external force to the sealing ash-tamping device through the handle 8. With the cooperation of the limiting ring 6 and the sealing ring 7, the ash-tamping rod 1 can reciprocate within the sealing tube 3.

[0042] The ash-tamping rod 1, connected to the elbow 4, drives the slag-breaking hook 5 to reciprocate within the gasifier ash chamber 11. When the slag-breaking hook 5 contacts agglomerated ash, it pushes the ash away from the ash discharge port, allowing unagglomerated ash to be discharged smoothly from the gasifier ash chamber 11. The agglomerated ash, pushed by the slag-breaking hook 5, continuously moves towards the wall of the gasifier ash chamber 11. When it contacts the wall, it is broken by the squeezing action of the slag-breaking hook 5 against the wall.

[0043] During the ash-breaking and slag-removing operation, the sealing ring 7 exerts a certain compressive force on the inner wall of the sealing tube 3. As the multi-stage sealing ring 7 moves within the sealing tube 3, it always isolates the gasifier from the outside world, effectively preventing leakage contact between the gasifier and the outside world. This ensures that the entire ash-breaking and slag-removing operation is carried out under strictly sealed conditions, providing excellent safety.

[0044] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A gasifier sealing and ash-tamping device, characterized in that: The device includes a ash-tamping rod (1), a sealing tube (3), and a slag-breaking assembly. The sealing tube (3) is fixed to the gasifier via a connector (2). The ash-tamping rod (1) passes through the sealing tube (3) and can move relative to the sealing tube (3). Both ends of the ash-tamping rod (1) extend beyond the sealing tube (3), and a sealing structure is provided between the sealing tube (3) and the ash-tamping rod (1). The slag-breaking assembly is installed at one end of the ash-tamping rod (1) and is used to crush the ash and slag.

2. The gasifier sealing and ash-tamping device according to claim 1, characterized in that: The sealing structure includes a groove (9) and a sealing ring (7). The groove (9) is circumferentially opened on the mortar rod (1), and the opening position corresponds to the position of the sealing tube (3). The sealing ring (7) is embedded in the groove (9), and the outer diameter of the sealing ring (7) is larger than the inner diameter of the sealing tube (3).

3. The gasifier sealing and ash-tamping device according to claim 2, characterized in that: The sealing ring (7) is provided with an opening (10).

4. The gasifier sealing and ash-tamping device according to claim 3, characterized in that: Multiple sets of the sealing structure are arranged along the axial direction of the mortar rod (1).

5. The gasifier sealing and ash-tamping device according to claim 4, characterized in that: The openings (10) of the plurality of sealing rings (7) are staggered relative to each other in the axial direction of the mortar rod (1).

6. The gasifier sealing and ash-tamping device according to claim 2, characterized in that: Limiting rings (6) are fixed at both ends of the sealing tube (3), and the inner diameter of the limiting rings (6) is smaller than the diameter of the mortar rod (1).

7. The gasifier sealing and ash-tamping device according to claim 1, characterized in that: The slag breaking assembly includes a connecting elbow (4) and a slag breaking hook (5). The main body of the connecting elbow (4) is bent, with one end connected to the ash-tamping rod (1) and the other end connected to the slag breaking hook (5).

8. The gasifier sealing and ash-tamping device according to claim 7, characterized in that: The slag-breaking hooks (5) are provided in three parts. The middle slag-breaking hook (5) is straight. The slag-breaking hooks (5) on both sides are bent to the sides near the connecting elbow (4), and the parts away from the connecting elbow (4) are oriented in the same direction as the middle slag-breaking hook (5).

9. The gasifier sealing and ash-tamping device according to claim 1, characterized in that: The connecting component (2) is a flange.

10. The gasifier sealing and ash-tamping device according to claim 1, characterized in that: The ash-tamping rod (1) has a handle (8) at the end away from the slag-breaking component.

Images