Compensating support structure and high-temperature exhaust cylinder support device

Abstract

This invention provides a compensating support structure and a high-temperature exhaust stack support device, relating to the field of mechanical support technology. The compensating support structure includes a support shaft, a bearing assembly, a first sliding assembly, and a second sliding assembly. The support shaft extends in a straight line and one end is used to connect to the exhaust stack; the bearing assembly has a first mounting portion; the first sliding assembly has a sliding hole for the support shaft to pass through, the inner wall of the sliding hole slidingly engaging with the outer wall of the support shaft, and the first sliding assembly is detachably mounted on the first mounting portion; the second sliding assembly has a sliding channel for accommodating and supporting the bearing assembly; the bottom end of the bearing assembly is located in the sliding channel and can slide within the sliding channel. This invention, by forming a first-stage axial sliding with the support shaft and the first sliding assembly, and a second-stage axial sliding with the bearing assembly and the second sliding assembly, decomposes the long-stroke axial displacement into two stages of progressive release, reducing wear on the sliding surface, avoiding jamming, and improving the stability and reliability of thermal expansion compensation.

Description

Technical Field

[0001] This invention relates to the field of mechanical support technology, and more specifically, to a compensating support structure and a high-temperature exhaust stack support device. Background Technology

[0002] In high-temperature exhaust systems, the exhaust stack undergoes significant thermal expansion during operation, while also experiencing equipment vibration and airflow disturbances, resulting in axial and radial displacement. To ensure stable system operation, a support structure is typically installed beneath the high-temperature exhaust stack to absorb thermal expansion displacement and bear the weight of the equipment.

[0003] Currently, commonly used support structures include two types: fixed supports and sliding supports. Fixed supports rigidly connect the high-temperature exhaust stack to the support foundation, offering a simple structure but prone to generating significant thermal stress. Sliding supports, on the other hand, allow relative sliding between the high-temperature exhaust stack and the support foundation, thereby releasing thermal stress. Existing sliding support structures mostly employ a unidirectional sliding compensation method, such as providing a sliding surface only in the axial direction or a single-stage sliding structure in the radial direction, adapting to displacement changes through the relative movement of the sliding pairs.

[0004] However, existing sliding support structures typically only have one axial sliding pair for axial thermal expansion compensation. When the thermal expansion of the high-temperature exhaust stack is large, the sliding stroke required by a single-stage sliding pair is too long, which can easily lead to uneven wear of the sliding surface, increased sliding resistance, and even jamming, thereby affecting the reliability of thermal expansion compensation and the stability of equipment operation. Summary of the Invention

[0005] The purpose of this invention is to provide a compensation support structure and a high-temperature exhaust stack support device to alleviate the technical problem in the prior art where, when the thermal expansion is large, the sliding stroke required by a single-stage sliding pair is too long, which easily leads to uneven wear of the sliding surface, increased sliding resistance, and even jamming, thereby affecting the reliability of thermal expansion compensation and the stability of equipment operation.

[0006] The present invention provides a compensation support structure, comprising: a support shaft, a shaft seat assembly, a first sliding assembly, and a second sliding assembly.

[0007] The support shaft extends in a straight line and one end is used to connect to the high-temperature exhaust stack. The bearing assembly has a first mounting portion; The first sliding assembly has a sliding hole for passing through the support shaft, the inner wall of the sliding hole is slidably engaged with the outer wall of the support shaft, and the first sliding assembly is detachably disposed on the first mounting portion; The second sliding component has a sliding channel for accommodating and supporting the bearing assembly; The bottom end of the bearing assembly is disposed in the sliding channel, and the extending direction of the sliding channel is the same as the extending direction of the sliding hole, so that the bearing assembly can slide within the sliding channel.

[0008] Furthermore, the bearing assembly includes a first mounting base and a bearing cap; The first mounting base has a first mounting groove at its top end and a second mounting groove at its bottom end. The first mounting base and the shaft cover are detachably connected, and the first mounting groove and the second mounting groove together form the first mounting part.

[0009] Furthermore, the first sliding component includes a bearing bush; The bearing bushes are multiple and are respectively disposed in the first mounting groove and the second mounting groove, and the inner walls of the multiple bearing bushes form the sliding holes.

[0010] Furthermore, the second sliding assembly includes a second mounting base and a slider; The sliding channel is disposed on the second mounting base, and the sliding piece is disposed on the second mounting base and located at the bottom of the sliding channel.

[0011] Furthermore, a third groove is provided at the bottom of the sliding channel; The slider is embedded in the third groove.

[0012] Furthermore, the second mounting base includes a support portion and a side wall; The third groove is disposed on the support portion; The sidewalls are two in number and are arranged opposite to each other on both sides of the support, and the two sidewalls and the top surface of the support form the sliding channel. Along the axial direction of the support shaft, the two sidewalls are located on the front and rear sides of the bearing assembly, respectively.

[0013] Furthermore, the sidewall includes a vertical section and a horizontal section; One end of the vertical section is located on one side of the support, and the other end extends upward; One end of the horizontal segment is connected to the extension end of the vertical segment, and the other end is a guide end that extends toward the normal direction close to the support. The guide ends of the two horizontal segments form the opening of the sliding channel above the support. The extension direction of the opening is perpendicular to the extension direction of the support shaft.

[0014] Furthermore, both the first sliding component and the sliding plate are made of tin bronze.

[0015] Furthermore, a limiting portion extending circumferentially is formed on the support shaft; The limiting part is used to abut against the end face of the first sliding component to limit the axial sliding range of the support shaft within the first sliding component.

[0016] The present invention also aims to provide a high-temperature exhaust stack support device, comprising: a radial compensation positioning structure and a provided compensation support structure; The radial compensation positioning structure includes a sliding support seat and an axial positioning shaft. The sliding support seat is provided with a radial sliding hole extending in the horizontal direction. One end of the axial positioning shaft is used to connect with the high-temperature exhaust cylinder body, and the other end passes through the radial sliding hole. The outer wall of the axial positioning shaft slides in fit with the inner wall of the radial sliding hole. The compensation support structure is multiple and is arranged at intervals from the radial compensation positioning structure along the axial direction of the high-temperature exhaust cylinder. The extension direction of the support shaft of the compensation support structure is the same as the extension direction of the axial positioning shaft.

[0017] Beneficial effects: This invention provides a compensating support structure. A first-stage axial sliding mechanism is formed by the sliding engagement of a first sliding component with a support shaft, and a second-stage axial sliding mechanism is formed by the sliding engagement of a second sliding component with a shaft seat assembly. The extension direction of the sliding channel is the same as the extension direction of the sliding hole. When the exhaust stack expands due to heat, the support shaft first completes the first-stage axial sliding within the first sliding component, and then drives the entire shaft seat assembly to continue completing the second-stage axial sliding within the sliding channel. This decomposes the long-stroke axial displacement into two stages of progressive release, thereby shortening the sliding stroke required for a single-stage sliding pair, reducing uneven local wear on the sliding surface caused by excessive stroke, lowering the risk of increased sliding resistance, and avoiding jamming problems caused by excessive stroke of a single-stage sliding pair. Thus, while achieving stable support for the high-temperature exhaust stack, it improves the stability and reliability of thermal expansion compensation, ensuring the stable operation of the high-temperature exhaust stack under conditions of large thermal expansion. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the supporting compensation structure provided in an embodiment of the present invention; Figure 2This is a schematic diagram of the split structure of the support and compensation structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the main structure of the support and compensation structure provided in an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 This is a schematic diagram of the structure of the high-temperature exhaust stack support device provided in an embodiment of the present invention; Figure 6 This is a side view of the high-temperature exhaust stack support device provided in an embodiment of the present invention.

[0020] icon: 10 - High-temperature exhaust casing; 20 - Radial compensation positioning structure; 100-Support shaft; 200-Shaft seat assembly; 210-First mounting seat; 211-First mounting groove; 220-Shaft cover; 221-Second mounting groove; 300-First sliding assembly; 310-Bearing bush; 400-Second sliding assembly; 401-Sliding channel; 410-Second mounting seat; 411-Support part; 412-Side wall; 4121-Vertical section; 4122-Horizontal section; 420-Sliding piece. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0028] Please combine Figures 1 to 4 The compensation support structure provided in this embodiment includes a support shaft 100, a shaft seat assembly 200, a first sliding assembly 300, and a second sliding assembly 400.

[0029] The support shaft 100 extends in a straight line, with one end used to connect to the high-temperature exhaust stack 10 (specifically, by welding in this embodiment). The shaft seat assembly 200 has a first mounting portion. The first sliding assembly 300 has a sliding hole for the support shaft 100 to pass through, the inner wall of the sliding hole slidingly engaging with the outer wall of the support shaft 100, and the first sliding assembly 300 is detachably disposed in the first mounting portion. The second sliding assembly 400 has a sliding channel 401, which can accommodate and support the shaft seat assembly 100. The bottom end of the shaft seat assembly 200 is disposed in the sliding channel 401, and the extending direction of the sliding channel 401 is the same as the extending direction of the sliding hole, allowing the shaft seat assembly 200 to slide within the sliding channel 401.

[0030] In daily use, in the compensation support structure, the support shaft 100 is connected to the high-temperature exhaust cylinder 10 and supported by the shaft seat assembly 200, and the second sliding assembly 400 can support the shaft seat assembly 200, so that the compensation support structure provided in this embodiment can achieve stable support for the high-temperature exhaust cylinder 10.

[0031] When the high-temperature exhaust cylinder 10 is heated and undergoes axial thermal expansion, it pushes the support shaft 100 connected to it. Since the support shaft 100 passes through the sliding hole of the first sliding component 300 and the two are slidably engaged, the support shaft 100 first moves axially relative to the first sliding component 300, realizing the first stage of axial sliding.

[0032] When the support shaft 100 slides to the preset stroke, the support shaft 100 or the high-temperature exhaust cylinder 10 abuts against one side of the sliding hole, and the support shaft 100 can no longer move relative to the first sliding assembly 300. At this time, the support shaft 100 transmits axial thrust to the bearing assembly 200. Since the bottom end of the bearing assembly 200 in this embodiment is accommodated in the sliding channel 401 of the second sliding assembly 400, and the extending direction of the sliding channel 401 is the same as the extending direction of the sliding hole, the bearing assembly 200 as a whole can drive the first sliding assembly 300 to continue sliding along the sliding channel 401, realizing the second-stage axial sliding.

[0033] The first-stage sliding stroke is relatively long, allowing for rapid response to thermal expansion. The second-stage sliding stroke is shorter, thus providing secondary compensation for significant thermal expansion. The two stages of sliding are switched via the linkage between the support shaft 100 and the bearing assembly 200, avoiding uneven wear, increased sliding resistance, or jamming caused by excessive stroke in a single-stage sliding pair. Simultaneously, the two-stage sliding disperses the wear load on the sliding contact surface, helping to extend the structure's service life and improving the stability and reliability of thermal expansion compensation. Therefore, while providing stable support for the high-temperature exhaust stack 10, it alleviates the problem of excessively long sliding stroke in a single-stage sliding pair of the support structure, which affects compensation reliability and operational stability when the high-temperature exhaust stack 10 undergoes thermal expansion.

[0034] Combination Figure 4 As shown, in this embodiment, the shaft seat assembly 200 includes a first mounting base 210 and a shaft cover 220. The top end of the first mounting base 210 is provided with a first mounting groove 211, and the bottom end of the shaft cover 220 is provided with a second mounting groove 221. The first mounting base 210 and the shaft cover 220 are detachably connected (specifically, detachably connected by bolts in this embodiment). When the first mounting base 210 and the shaft cover 220 are connected, the first mounting groove 211 and the second mounting groove 221 together form a first mounting portion.

[0035] The first mounting base 210 and the shaft cover 220 cooperate to form the mounting structure of the first sliding assembly 300. Specifically, the first mounting groove 211 is used to accommodate the lower part of the first sliding assembly 300, and the second mounting groove 221 is used to accommodate the upper part of the first sliding assembly 300. The shaft cover 220 is fixedly connected to the first mounting base 210 by multiple bolts, so that the upper and lower parts of the first sliding assembly 300 can be clamped and fixed, thereby forming a complete sliding hole for the support shaft 100 to pass through. At the same time, the bottom end of the first mounting base 210 is used for sliding engagement with the second sliding assembly 400. The lower surface (bottom end) of the first mounting base 210 directly contacts the sliding channel 401 of the second sliding assembly 400, realizing relative sliding in the axial and radial directions.

[0036] In daily use, the first mounting base 210 bears the gravity and thermal expansion force from the high-temperature exhaust cylinder 10, the support shaft 100 and the shaft cover 220, and transmits the load to the second sliding component 400 below, while releasing the thermal expansion displacement through its own sliding.

[0037] In this embodiment, the first mounting base 210 and the shaft cover 220 are separated and detachable via multiple bolts, making the installation, replacement, and maintenance of the first sliding assembly 300 very convenient. The first mounting base 210 simultaneously serves the functions of "fixing the first sliding assembly 300" and "sliding with the second sliding assembly 400," thus achieving structural integration without the need for additional intermediate components. The bottom end of the first mounting base 210 directly contacts the second sliding assembly 400 as a sliding surface, reducing the number of links in the force transmission path, improving load transmission efficiency and sliding stability, and resulting in a compact structure with fewer parts, reducing manufacturing costs and potential failure points.

[0038] In this embodiment, the first sliding component 300 includes a bearing 310. Specifically, there are two bearings 310, which are respectively disposed in the first mounting groove 211 and the second mounting groove 221.

[0039] The lower bearing bush 310 is fitted into the first mounting groove 211 at the top of the first mounting base 210, and the upper bearing bush 310 is fitted into the second mounting groove 221 at the bottom of the bearing cover 220. When the bearing cover 220 and the first mounting base 210 are closed, the two bearing bushes 310 are connected end to end, and the inner walls of the two bearing bushes 310 together form a sliding hole for the support shaft 100 to pass through.

[0040] The support shaft 100 passes through a sliding hole formed by the upper and lower bearing shells 310, and the outer wall of the support shaft 100 slides in contact with the inner wall of the bearing shell 310. When the support shaft 100 is subjected to axial force, the outer wall of the support shaft 100 slides along the inner wall of the bearing shell 310. Since the bearing shells 310 are separately arranged and respectively embedded in the corresponding first mounting groove 211 and second mounting groove 221, each bearing shell 310 only bears a portion of the load.

[0041] In this embodiment, two bearing shells 310 are respectively embedded in the detachable bearing cap 220 and the first mounting base 210, which reduces the machining difficulty of a single bearing shell 310 and facilitates the replacement of severely worn single bearing shells 310 without the need for overall replacement. The mounting groove positions and prevents the bearing shell 310 from rotating or moving along with the support shaft 100, thereby facilitating the maintenance of the fit accuracy between the sliding hole and the support shaft 100, reducing sliding friction, and improving the smoothness of axial sliding.

[0042] In this embodiment, the second sliding assembly 400 includes a second mounting base 410 and a slider 420. A sliding channel 401 is disposed on the second mounting base 410, and the slider 420 is disposed on the second mounting base 410 and located at the bottom of the sliding channel 401.

[0043] The bottom end of the bearing assembly 200 directly contacts and slides relative to the upper surface of the slide plate 420. The slide plate 420, as a wear member, bears the pressure and sliding friction of the bearing assembly 200, while the second mounting base 410 provides structural support and lateral constraint for the sliding channel 401.

[0044] In this embodiment, the sliding surface is separated into independent sliding plates 420, and wear is concentrated on the replaceable sliding plates 420, avoiding direct wear on the second mounting base 410 body. When the sliding plate 420 wears to a certain extent, only the sliding plate 420 needs to be replaced to restore sliding performance, without having to replace the entire second mounting base 410, thus reducing maintenance costs. Furthermore, the sliding plate 420 can be made of a different material than the second mounting base 410 to optimize tribological properties.

[0045] Specifically, in this embodiment, a third groove is provided at the bottom of the sliding channel 401, and the slide plate 420 is embedded in the third groove.

[0046] The third groove is formed on the top surface of the second mounting base 410 (i.e., the bottom surface of the sliding channel 401) and is recessed relative to the top surface of the second mounting base 410. The slide plate 420 is embedded in this third groove, with its top surface convex relative to the bottom surface of the sliding channel 401 to allow the shaft seat assembly 200 to slide. The sidewall 412 of the third groove restricts the horizontal movement of the slide plate 420. This structure eliminates the need for additional fasteners to install and secure the slide plate 420, simplifying the structure. Furthermore, the groove positions and prevents the slide plate 420 from dislodging, ensuring it will not shift even under horizontal friction during sliding. It also facilitates the disassembly and replacement of the slide plate 420, improving maintenance convenience.

[0047] In this embodiment, the second mounting base 410 includes a support portion 411 and side walls 412. A third groove is disposed on the support portion 411. There are two side walls 412, which are disposed opposite to each other on both sides of the support portion 411. The two side walls 412 and the top surface of the support portion 411 together form a sliding channel 401. Along the axial direction of the support shaft 100, the two side walls 412 are located on the front and rear sides of the shaft seat assembly 200, respectively.

[0048] In this embodiment, the support portion 411 is a rectangular flat plate base, and a third groove is provided on the top surface of the support portion 411 for mounting the sliding plate 420. Two side walls 412 are located on both sides of the support portion 411 and extend upward, thereby forming a sliding channel 401 with front and rear boundaries above the support portion 411. The bottom end of the bearing assembly 200 is inserted into the sliding channel 401, and a certain gap is maintained between the front and rear sides of the bearing assembly 200 and the side walls 412, so that the bearing assembly 200 can generate secondary compensation along the axial direction of the support shaft 100 when the high-temperature exhaust cylinder 10 expands.

[0049] In this structure, when the high-temperature exhaust cylinder 10 expands along its own axial direction, that is, when the support shaft 100 moves along its own radial direction, the bearing assembly 200 can slide along the sliding channel 401.

[0050] In this embodiment, when the first mounting base 210 slides along the axial direction of the support shaft 100, the sliding channel 401 has two side walls 412 that limit the axial movement distance of the first mounting base 210 along the support shaft 100. This ensures that the bearing assembly 200 will not fall off the support portion 411 during axial sliding, thereby preventing the bearing assembly 200 from coming off.

[0051] In this embodiment, the sidewall 412 includes a vertical segment 4121 and a horizontal segment 4122. One end of the vertical segment 4121 is disposed on one side of the support portion 411, and the other end extends upward. One end of the horizontal segment 4122 is connected to the extended end of the vertical segment 4121, and the other end is a guide end that extends in a direction close to the normal of the support portion 411 (i.e., inward). The guide ends of the two horizontal segments 4122 are disposed opposite each other above the support portion 411, forming an opening of the sliding channel 401.

[0052] The vertical section 4121 provides lateral height, and the horizontal section 4122 extends from the top of the vertical section 4121 into the interior of the support 411, forming an inverted L-shaped cross-section. Two opposing L-shaped sidewalls 412 form a groove with a constricted structure. The bottom width of the groove is the relatively wide distance between the two vertical sections 4121. The width of the top opening is the relatively narrow distance between the two horizontal sections 4122. The bottom end of the bearing assembly 200 is designed as a matching T-shape or a shape with a lateral flange. This flange is located below the horizontal section 4122, between the two vertical sections 4121, and is thus hooked vertically by the horizontal section 4122, preventing the bearing assembly 200 from detaching upwards.

[0053] The narrowed groove formed by the L-shaped sidewall 412 not only restricts the axial displacement of the bearing assembly 200 along the support shaft 100, but also provides vertical restraint, preventing the first mounting base 210 and the support shaft 100 from overturning or jumping off under the vibration of the high-temperature exhaust stack 10 or under airflow disturbance, thus enhancing the vibration resistance and operational safety of the support system without the need for additional pressure plates or fasteners. At the same time, since the bearing assembly 200 can slide freely within the groove, its thermal expansion compensation capability is not sacrificed.

[0054] Specifically, in this embodiment, the first sliding component 300 (i.e., the bearing 310) and the sliding plate 420 are both made of tin bronze.

[0055] Tin bronze possesses excellent wear resistance, a low coefficient of friction, and good dimensional stability at high temperatures. In high-temperature exhaust environments (e.g., 200℃-500℃), tin bronze maintains its lubricating properties, reducing the risk of dry friction between sliding pairs. The friction pairs between the bearing shell 310 and the support shaft 100, and between the sliding plate 420 and the bottom of the bearing assembly 200, are both tin bronze-on-steel (or tin bronze-on-tin bronze) friction pairs.

[0056] In this structure, the compensation support structure provided in this embodiment can reduce frictional resistance and alleviate wear by relying on the self-lubricating properties of the material itself without the need for external lubricant. Furthermore, compared to ordinary carbon steel or cast iron, tin bronze has better anti-galling properties and is less prone to adhesive wear caused by localized overheating. This helps extend the service life of the bearing 310 and the sliding plate 420, reduces maintenance frequency, and improves reliability under high-temperature conditions.

[0057] Please combine Figure 5 , Figure 6 The high-temperature exhaust stack 10 support device provided in this embodiment includes a radial compensation positioning structure 20 and a compensation support structure. The radial compensation positioning structure 20 includes a sliding support seat and an axial positioning shaft. The sliding support seat is provided with a radial sliding hole extending in the horizontal direction. One end of the axial positioning shaft is used to connect with the high-temperature exhaust stack 10, and the other end passes through the radial sliding hole, and the outer wall of the axial positioning shaft slides in fit with the inner wall of the radial sliding hole.

[0058] There are multiple compensation support structures, which are spaced apart from the radial compensation positioning structure 20 along the axial direction of the high-temperature exhaust stack 10. The extension direction of the support shaft 100 of the multiple compensation support structures is the same as the extension direction of the axial positioning shaft.

[0059] Specifically, in this embodiment, the support shafts 100 and axial positioning shafts of the multiple compensation support structures extend radially along the high-temperature exhaust cylinder 10 (i.e., perpendicular to the axial direction of the high-temperature exhaust cylinder 10).

[0060] In this embodiment, the engagement method between the axial positioning shaft and the sliding support in the radial compensation positioning structure 20 is the same as the engagement method between the first mounting base 210 and the support shaft 100 in the compensation support structure. However, the bottom end of the sliding support is fixed and cannot slide.

[0061] Therefore, the radial compensation support structure only allows the axial positioning shaft to slide radially within the radial sliding hole along the high-temperature exhaust stack, but does not allow relative displacement (i.e., axial positioning) along the axial direction of the high-temperature exhaust stack. Multiple compensation support structures, on the other hand, allow the support shaft 100 to slide along its own axial direction (i.e., the radial direction of the high-temperature exhaust stack 10), and also allow the shaft seat assembly 200 to slide axially within the sliding channel 401 (i.e., the axial direction of the high-temperature exhaust stack 10).

[0062] In this embodiment, a radial compensation positioning structure 20 is provided at one end of the high-temperature exhaust cylinder 10 along its axial direction, and a compensation support structure is provided at the other end. With this structure, when the high-temperature exhaust cylinder 10 thermally expands, the radial compensation positioning structure 20 absorbs the radial displacement of the high-temperature exhaust cylinder 10, but restricts its axial position. The compensation support structure absorbs both axial and radial displacements. Since the support shaft 100 of the compensation support structure and the axial positioning shaft of the radial compensation positioning structure 20 extend in the same direction (both radially), the thermal expansion displacement of the entire high-temperature exhaust cylinder 10 is orderly distributed. The thermal expansion of the high-temperature exhaust cylinder 10 along its own axial direction is compensated by the sliding compensation of the second sliding component 400 of the compensation support structure and the first mounting base 210 along the extension direction of the opening of the slide groove. The thermal expansion of the high-temperature exhaust cylinder 10 along its own radial direction is compensated by the sliding compensation of the radial compensation positioning structure 20 and the compensation support structure.

[0063] In this structure, the radial compensation positioning structure 20 and the compensation support structure are arranged at intervals along the axial direction of the high-temperature exhaust cylinder 10, forming a support system that combines radial sliding at one end and bidirectional sliding at multiple points. This allows the axial thermal expansion to be orderly guided to release in a single direction, while the radial thermal expansion is absorbed by all support points in a coordinated manner. This avoids thermal stress concentration inside the high-temperature exhaust cylinder 10 or the support structure due to improper constraints or excessive offset.

[0064] Furthermore, the radial compensation positioning structure 20 provides an axial reference point for the high-temperature exhaust stack 10, and the compensation support structure provides a large axial compensation capacity. Compared to solutions that use all compensation support structures or all fixed supports, the high-temperature exhaust stack 10 support device provided in this embodiment ensures both effective release of thermal expansion and maintains the positional stability of the high-temperature exhaust stack 10. At the same time, multiple compensation support structures share the same type of compensation support structure, facilitating standardized production and maintenance, and reducing overall manufacturing costs.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention 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 therein. 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 the present invention.

Claims

1. A compensating support structure, characterized by, include: A support shaft (100) extends in a straight line and one end is used to connect to a high-temperature exhaust cylinder (10); The bearing assembly (200) has a first mounting portion; The first sliding assembly (300) has a sliding hole for passing through the support shaft (100), the inner wall of the sliding hole is slidably engaged with the outer wall of the support shaft (100), and the first sliding assembly (300) is detachably disposed on the first mounting portion; The second sliding assembly (400) has a sliding channel (401) for receiving and supporting the bearing assembly (200); The bottom end of the bearing assembly (200) is disposed in the sliding channel (401), the extension direction of the sliding channel (401) is the same as the extension direction of the sliding hole, and the bearing assembly (200) can slide within the sliding channel (401).

2. The compensating support structure of claim 1, wherein, The bearing assembly (200) includes a first mounting base (210) and a bearing cap (220); The first mounting base (210) has a first mounting groove (211) at its top end and a second mounting groove (221) at its bottom end. The first mounting base (210) and the shaft cover (220) are detachably connected. The first mounting groove (211) and the second mounting groove (221) together form the first mounting part.

3. The compensating support structure of claim 2, wherein, The first sliding component (300) includes a bearing (310); The bearing bush (310) is multiple and is respectively disposed in the first mounting groove (211) and the second mounting groove (221), and the inner wall of the multiple bearing bushes (310) forms the sliding hole.

4. The compensating support structure of claim 1, wherein, The second sliding assembly (400) includes a second mounting base (410) and a slider (420); The sliding channel (401) is provided on the second mounting base (410), and the slide plate (420) is provided on the second mounting base (410) and located at the bottom of the sliding channel (401).

5. The compensating support structure of claim 4, wherein, The bottom of the sliding channel (401) is provided with a third groove; The slide (420) is embedded in the third groove.

6. The compensation support structure according to claim 5, characterized in that, The second mounting base (410) includes a support (411) and a side wall (412); The third groove is provided on the support part (411); There are two sidewalls (412) arranged opposite each other on both sides of the support (411), and the two sidewalls (412) together with the top surface of the support (411) form the sliding channel (401); Along the axial direction of the support shaft (100), the two sidewalls (412) are located on the front and rear sides of the bearing assembly (200), respectively.

7. The compensation support structure according to claim 6, characterized in that, The sidewall (412) includes a vertical section (4121) and a horizontal section (4122); One end of the vertical section (4121) is located on one side of the support (411), and the other end extends upward; One end of the horizontal segment (4122) is connected to the extension end of the vertical segment (4121), and the other end is a guide end that extends toward the normal direction close to the support (411). The guide ends of the two horizontal segments (4122) form the opening of the sliding channel (401) above the support (411). The extension direction of the opening is perpendicular to the extension direction of the support shaft (100).

8. The compensation support structure according to claim 4, characterized in that, Both the first sliding component (300) and the sliding piece (420) are made of tin bronze.

9. The compensation support structure according to any one of claims 1 to 8, characterized in that, A limiting portion extending circumferentially is formed on the support shaft (100); The limiting part is used to abut against the end face of the first sliding assembly (300) to limit the axial sliding range of the support shaft (100) within the first sliding assembly (300).

10. A high-temperature exhaust cylinder (10) support device, characterized in that, include: Radial compensation positioning structure (20) and compensation support structure as described in any one of claims 1 to 9; The radial compensation positioning structure (20) includes a sliding support seat and an axial positioning shaft. The sliding support seat is provided with a radial sliding hole extending in the horizontal direction. One end of the axial positioning shaft is used to connect with the high temperature exhaust cylinder (10), and the other end passes through the radial sliding hole. The outer wall of the axial positioning shaft slides in cooperation with the inner wall of the radial sliding hole. The compensation support structure is multiple and is spaced apart from the radial compensation positioning structure (20) along the axial direction of the high-temperature exhaust cylinder (10); The extension direction of the support shaft (100) of the compensation support structure is the same as the extension direction of the axial positioning shaft.

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