Telescopic sleeve expansion joint based on biomass boiler ash cooler

Abstract

The utility model discloses a telescopic sleeve expansion joint based on a biomass boiler ash cooler, a main body unit comprises a telescopic sleeve and a supporting rod connected with the telescopic sleeve, and the telescopic sleeve stretches out and draws back along the two ends of the supporting rod in the axial direction. The upper end and the lower end of the supporting rod are provided with a first telescopic end space and a second telescopic end space respectively, the telescopic sleeve comprises an outer-layer pipeline, the outer-layer pipeline is of an outer corrugated structure, a built-in sleeve is arranged in the outer-layer pipeline, and the outer-layer pipeline and the built-in sleeve are connected in a welded mode. The built-in sleeve and any end of the outer-layer pipeline form a welding connection end, and the built-in sleeve far away from the welding connection end is in a free state. The built-in sleeve and any end of the outer layer pipeline form the welding connection end, the built-in sleeve far away from the welding connection end is in the free state, and the situation that disturbance is generated at the corrugated pipe in the using state, mechanical vibration is formed, and the overall service life is affected is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical connection, and in particular relates to a telescopic sleeve expansion joint based on an ash cooler of a biomass boiler. Background Art

[0002] Expansion joints are flexible components installed on container shells or pipes to compensate for additional stress caused by temperature differences and mechanical vibrations. They can effectively compensate for axial deformation. Expansion joints are also commonly called compensators or expansion joints. As an elastic compensation component that can be freely expanded and contracted, expansion joints have the advantages of reliable operation, good performance, and compact structure. They have been widely used in chemical, metallurgical, nuclear energy and other departments.

[0003] Some expansion joints consist of a bellows (an elastic element), end pipes, brackets, flanges and conduits. Its working principle is to use the effective expansion and contraction of the main bellows to absorb the dimensional changes of pipelines, conduits, containers, etc. caused by thermal expansion and contraction, or to compensate for the axial, lateral and angular displacements of pipelines, conduits, containers, etc. It can also be used for noise reduction and vibration reduction, and heating. In order to prevent the deformation or damage of the heating pipeline due to thermal elongation or temperature stress when the heating pipeline is heated, a compensator needs to be installed on the pipeline to compensate for the thermal elongation of the pipeline, thereby reducing the stress of the pipe wall and the force acting on the valve or bracket structure.

[0004] However, the existing expansion joint structure has the following problems: 1. Due to the open setting inside the expansion joint, the sediment in the pipeline will adhere to the groove of the bellows, which will affect the use effect (corrosion / scaling) after long-term use; 2. Due to the open structure of the bellows, the connection at both ends is prone to disturbance and mechanical vibration (radial disturbance), which causes vibration at the connection and the biomass boiler ash cooler, affecting the overall service life.

[0005] In view of the above factors, a telescopic sleeve expansion joint based on the biomass boiler ash cooler is specially designed. The inner sleeve forms a welding connection end with any end of the outer pipe, and the inner sleeve away from the welding connection end is in a free state, so as to avoid disturbance at the bellows during use and form mechanical vibration, which affects the overall service life. Utility Model Content

[0006] The utility model aims to provide a telescopic sleeve expansion joint based on a biomass boiler ash cooler to solve the problems raised in the above background technology.

[0007] The purpose of the utility model is achieved through the following technical solutions: a telescopic sleeve expansion joint based on a biomass boiler ash cooler, comprising a main unit, the main unit comprising a telescopic sleeve and a support rod connected to the telescopic sleeve, the telescopic sleeve is axially telescopic along both ends of the support rod;

[0008] The support rod is provided with a first telescopic end space and a second telescopic end space at the upper and lower ends respectively;

[0009] The telescopic sleeve comprises an outer pipe having an outer corrugated structure, an inner sleeve is arranged inside the outer pipe, and the outer pipe and the inner sleeve are connected by welding.

[0010] Furthermore, the upper and lower ends of the telescopic sleeve of the main unit are respectively connected to an upper connecting flange and a lower connecting flange, and the upper connecting flange and the lower connecting flange are evenly and fixedly connected with positioning ends, and the positioning ends are connected and matched with the support rod;

[0011] The inner sleeve forms a welding connection end with any end of the outer pipe, and the inner sleeve away from the welding connection end is in a free state.

[0012] Furthermore, the first telescopic end space and the second telescopic end space provided at the upper and lower ends of the support rod are respectively connected with stop bolts;

[0013] The telescopic sleeve is telescoped in the first telescopic end space and the second telescopic space.

[0014] Further, the area where the first telescopic end space and the second telescopic space are located is a threaded section;

[0015] The axial lengths of the first telescopic end space and the second telescopic space occupy one quarter of the length of the support rod.

[0016] Furthermore, the welded connection end of the inner sleeve and the outer pipe is connected to the inflow end of the horizontal pipeline of the biomass boiler ash cooler;

[0017] Or the welded connection end between the inner sleeve and the outer pipe is connected to the upper end of the vertical pipeline of the biomass boiler ash cooler.

[0018] Furthermore, two main body units are symmetrically arranged, and the two main body units are connected to the supporting pipe section in a fixed manner or a detachable manner to form an expansion joint connection section connected to the ash cooler of the biomass boiler;

[0019] The length of the supporting pipe section is twice the axial length of the main body unit.

[0020] Furthermore, one main unit is provided, and the main unit is connected to the support pipe section in a fixed manner or a detachable manner to form an expansion joint connection section connected to the biomass boiler ash cooler;

[0021] The length of the supporting pipe section is twice the axial length of the main body unit.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The outer pipe of the utility model is coaxially arranged with the built-in sleeve and is made of metal material. When in use, it prevents the sediment in the open-type pipe inside the expansion joint from adhering to the groove of the bellows, which affects the use effect (corrosion / scaling) after long-term use, thereby improving the service life.

[0024] The utility model forms a welding connection end with the inner sleeve and any end of the outer pipe, and the inner sleeve far away from the welding connection end is in a free state, so as to avoid disturbance and mechanical vibration at the bellows when in use, which affects the overall service life.

[0025] In order to facilitate use, the utility model provides different connection forms between the main unit and the supporting pipe section to form a compensation section at the connection end of the biomass boiler ash cooler for use by the biomass boiler ash cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the main unit of the utility model;

[0027] Figure 2 It is a plan schematic diagram of the utility model;

[0028] Figure 3 It is a schematic diagram of the telescopic sleeve of the utility model;

[0029] Figure 4 It is a schematic diagram of the main unit and the supporting pipe section of the utility model;

[0030] Figure 5 This is another schematic diagram of the main unit and supporting pipe section of the utility model. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] like Figure 1-5 As shown, a telescopic sleeve expansion joint based on a biomass boiler ash cooler includes a main unit 1, wherein the main unit 1 includes a telescopic sleeve 1-1 and a support rod 4 connected to the telescopic sleeve 1-1, and the telescopic sleeve 1-1 is axially telescopic along both ends of the support rod 4;

[0035] The support rod 4 is provided with a first telescopic end space 5 and a second telescopic end space 6 at the upper and lower ends respectively;

[0036] The telescopic sleeve 1-1 comprises an outer pipe 1-2 having an outer corrugated structure, an inner sleeve 1-3 is arranged inside the outer pipe 1-2, and the outer pipe 1-2 and the inner sleeve 1-3 are connected by welding.

[0037] The outer pipe 1-2 and the inner sleeve 1-3 are coaxially arranged and are made of metal material.

[0038] The upper and lower ends of the telescopic sleeve 1-1 of the main unit 1 are respectively connected to the upper connecting flange 2 and the lower connecting flange 3, and the upper connecting flange 2 and the lower connecting flange 3 are evenly and fixedly connected with positioning ends, and the positioning ends are connected and matched with the support rod 4;

[0039] The inner sleeve 1-3 forms a welding connection end with any end of the outer pipe 1-2, and the inner sleeve 1-3 away from the welding connection end is in a free state.

[0040] In order to facilitate adjustment of the size of the first telescopic end space 5 and the second telescopic end space 6 according to the use requirements in the use state, the first telescopic end space 5 and the second telescopic end space 6 provided at the upper and lower ends of the support rod 4 are respectively connected with stop bolts;

[0041] The telescopic sleeve 1 - 1 is telescopically moved in the first telescopic end space 5 and the second telescopic space 6 .

[0042] In order to facilitate the formation of a fixed compressed moving space in the use state, the area where the first telescopic end space 5 and the second telescopic space 6 are located is a threaded section;

[0043] The axial lengths of the first telescopic end space 5 and the second telescopic space 6 occupy one quarter of the length of the support rod 4 .

[0044] In order to reduce the mechanical disturbance of the biomass boiler ash cooler and the connection end when in use, the welded connection end of the inner sleeve 1-3 and the outer pipe 1-2 is connected to the inflow end of the horizontal pipeline of the biomass boiler ash cooler;

[0045] Or the welded connection end between the inner sleeve 1-3 and the outer pipe 1-2 is connected to the upper end of the vertical pipeline of the biomass boiler ash cooler.

[0046] In order to facilitate the formation of a compensation section at the connection end of the biomass boiler ash cooler by connecting the main unit 1 with the support pipe section in the use state, two main units 1 are symmetrically arranged, and the two main units 1 are connected to the support pipe section in a fixed manner or a detachable manner to form an expansion joint connection section connected to the biomass boiler ash cooler;

[0047] The length of the support pipe section is twice the axial length of the main unit 1, wherein the support pipe section is a metal pipe section, and a connecting flange (not shown in the figure) is arranged at the end of the support pipe section.

[0048] In order to facilitate the formation of a compensation section at the connection end of the biomass boiler ash cooler by connecting the main unit 1 with the support pipe section in the use state, the main unit 1 is provided with one, and the main unit 1 is connected to the support pipe section in a fixed manner or a detachable manner to form an expansion joint connection section connected to the biomass boiler ash cooler;

[0049] The length of the support pipe section is twice the axial length of the main unit 1, wherein the support pipe section is a metal pipe section, and a connecting flange (not shown in the figure) is arranged at the end of the support pipe section.

[0050] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A telescopic sleeve expansion joint based on a biomass boiler ash cooler, characterized in that: The main body unit (1) comprises a telescopic sleeve (1-1) and a support rod (4) connected to the telescopic sleeve (1-1), wherein the telescopic sleeve (1-1) is telescopic along the axial direction at both ends of the support rod (4); The support rod (4) is provided with a first telescopic end space (5) and a second telescopic end space (6) at the upper and lower ends respectively; The telescopic sleeve (1-1) comprises an outer pipe (1-2), the outer pipe (1-2) having an outer corrugated structure, an inner sleeve (1-3) being arranged inside the outer pipe (1-2), and the outer pipe (1-2) and the inner sleeve (1-3) being connected by welding.

2. The telescopic sleeve expansion joint based on the biomass boiler ash cooler according to claim 1 is characterized in that: The upper and lower ends of the telescopic sleeve (1-1) of the main unit (1) are respectively connected to an upper connecting flange (2) and a lower connecting flange (3), and positioning ends are evenly and fixedly connected to the upper connecting flange (2) and the lower connecting flange (3), and the positioning ends are connected and matched with the support rod (4); The inner sleeve (1-3) and any one end of the outer layer pipe (1-2) form a welding connection end, and the inner sleeve (1-3) away from the welding connection end is in a free state.

3. The telescopic sleeve expansion joint based on the biomass boiler ash cooler according to claim 2 is characterized in that: The first telescopic end space (5) and the second telescopic end space (6) provided at the upper and lower ends of the support rod (4) are respectively connected to stop bolts; The telescopic sleeve (1-1) is telescopically moved within the first telescopic end space (5) and the second telescopic space (6).

4. The telescopic sleeve expansion joint based on the biomass boiler ash cooler according to claim 3 is characterized in that: The area where the first telescopic end space (5) and the second telescopic space (6) are located is a threaded section; The axial lengths of the first telescopic end space (5) and the second telescopic space (6) occupy one quarter of the length of the support rod (4).

5. The telescopic sleeve expansion joint based on the biomass boiler ash cooler according to claim 4 is characterized in that: The welded connection end between the inner sleeve (1-3) and the outer layer pipe (1-2) is connected to the inflow end of the horizontal pipeline of the biomass boiler ash cooler; Or the welded connection end between the inner sleeve (1-3) and the outer layer pipe (1-2) is connected to the upper end of the vertical pipeline of the biomass boiler ash cooler.

6. The telescopic sleeve expansion joint based on the biomass boiler ash cooler according to claim 5 is characterized in that: Two main body units (1) are symmetrically arranged, and the two main body units (1) are connected to the support pipe section in a fixed manner or a detachable manner to form an expansion joint connection section connected to the biomass boiler ash cooler; The length of the supporting pipe section is twice the axial length of the main body unit (1).

7. The telescopic sleeve expansion joint based on the biomass boiler ash cooler according to claim 5 is characterized in that: One main body unit (1) is provided, and the main body unit (1) is connected to the support pipe section in a fixed manner or a detachable manner to form an expansion joint connection section connected to the biomass boiler ash cooler; The length of the supporting pipe section is twice the axial length of the main body unit (1).

Images