A steel hoop inner tube chimney

Abstract

The present invention relates to a chimney with a steel clamp inner tube, which belongs to the technical field of chimney design and construction; the chimney outer tube is sleeved with an inner tube of the chimney connected in sections, and the inner tube sections are connected by a socket and spigot structure; the upper and lower steel clamps at the connection of the inner tube sections are connected by a basket bolt; a sway-stop device is provided between the inner wall of the chimney outer tube and the steel clamp; by adopting a steel clamp with comprehensive functions such as stiffening, sway-stop, inner tube connection, and suspension and hoisting: a rigid support is provided for the inner tube to meet the complex stress conditions of the inner tube; the installation of the sway-stop device is convenient, and the needs of sway-stop, chimney hoisting and inner tube connection are met by the sway-stop device; the inner tube is connected to the steel clamp by a basket bolt, solving the problem of connecting the inner tube in a small space; the socket-type connection eliminates the leakage of flue gas condensate. The present invention provides a safe, reliable, economical and applicable chimney anti-corrosion technical solution for the application of glass fiber reinforced plastic inner tube in the field of sleeve-type steel chimneys.

Description

Technical Field

[0001] The invention relates to a steel hoop inner tube chimney, belonging to the technical field of chimney design and construction. Background Art

[0002] Steel chimneys are favored by many users because of their factory-made, on-site installation, convenience and speed. The national standard "Chimney Design Code" (GB50051) divides steel chimneys into self-supporting steel chimneys, tower-type steel chimneys and cable-type steel chimneys according to the form of force; and divided into single-tube chimneys, sleeve-type chimneys and multi-tube chimneys according to the form of lining. At present, the sleeve-type self-supporting steel chimneys are the most widely used steel chimneys in the domestic and foreign markets. The sleeve-type self-supporting steel chimney is composed of a steel outer tube and a smoke exhaust inner tube. The smoke exhaust inner tube mainly includes two categories: metal inner tube and fiberglass inner tube. Most smoke exhaust tubes are single inner tubes, and multi-tube steel chimneys with more than or equal to 2 inner tubes account for a relatively small proportion.

[0003] As early as 1999, the International Council of Industrial Chimneys (CICIND) promulgated the "Model Code for Steel Chimneys", which made detailed provisions for the design and calculation of self-supporting sleeve steel chimneys. my country's "Chimney Design Code" GB50051-2003 also made provisions for the design of outer and inner tubes of steel chimneys. Later, the "Chimney Design Code" GB50051-2013 added the design provisions for FRP chimneys, thereby increasing the application scope of FRP smoke exhaust pipes in the field of steel chimneys.

[0004] In order to meet the needs of factory production, transportation and installation technology, at present, the inner and outer tubes of steel chimneys are generally made in sections. Each section of the inner and outer tubes needs to be pre-assembled together in the factory, and transported and hoisted at the same time. Because the distance between the inner and outer tubes is small, the inner tube needs to be hung on the outer tube during hoisting. After it is in place, the inner tube is connected first, and then the outer tube. After the installation is completed, the inner and outer tubes are free to deform vertically to each other, and the outer tube constrains the inner tube horizontally to maintain deformation coordination. In order to meet the installation needs of narrow spaces, the inner and outer tubes are connected in sections with flanges. This traditional flange-connected sleeve-type steel chimney, especially when the smoke exhaust pipe is a fiberglass inner tube, has the following problems:

[0005] 1) The traditional FRP inner tube cannot meet the functions of hoisting, anti-swaying and suspension of FRP inner tube;

[0006] 2) The inner tube flange connection is prone to leakage of flue gas condensate, which will corrode the outer tube of the chimney and cause structural safety hazards.

[0007] In order to solve a series of problems such as condensate leakage, suspension and anti-swaying caused by ordinary inner tube connection methods, the present invention provides a technical solution for a steel-hooped FRP inner tube chimney, which solves the connection technology of FRP inner tubes in the field of steel chimneys by improving the existing technology: "FRP inner tube multifunctional stiffening connection device" (Chinese patent number: ZL 2017 2 0498219.8), and uses the stiffening connection device to solve technical problems such as hoisting, anti-swaying and suspension of the FRP inner tube. Summary of the invention

[0008] The purpose of the invention is to solve the problems of connection, shaking prevention and hoisting of the glass fiber reinforced plastic inner tube, as well as the technical problem of condensate leakage.

[0009] In order to achieve the purpose of solving the above-mentioned problems, the technical solution adopted by the present invention is to provide a steel-hoop inner-tube chimney, wherein the outer tube of the chimney is sleeved with an inner tube of the chimney connected in sections, and the connection between the inner tube pipe sections is provided with a socket and spigot structure; steel hoops are sleeved on the outer walls of the inner tubes adjacent to the connection between the inner tube pipe sections, and a steel hoop connecting device is provided between the upper and lower steel hoops at the connection between the inner tube pipe sections; a shake-stop device is provided between the inner wall of the outer tube of the chimney and the steel hoop.

[0010] Preferably, the plug-in structure at the inner tube connection includes a socket and a spigot; each inner tube pipe section has a spigot at the lower end and a socket at the upper end; the inner diameter of the socket end is set to be larger than the outer diameter of the spigot end. When installing and connecting, the spigot of the upper pipe section is inserted into the socket of the lower pipe section, and the annular gap between the two ports is filled with resin or other anti-corrosion materials.

[0011] Preferably, a funnel-shaped condensate discharge mechanism for collecting and discharging condensate is provided at the bottom of the inner cylinder.

[0012] Preferably, the steel hoop connecting device includes an upper steel hoop, a lower steel hoop and a basket bolt; the steel hoop includes a steel hoop profile and a steel hoop connecting steel plate, and the steel hoop profile is connected to the inner tube through the steel hoop connecting steel plate; the upper steel hoop and the lower steel hoop are connected by a basket bolt.

[0013] Preferably, an upper steel sleeve is provided on the upper steel hoop, and a lower steel sleeve is provided on the lower steel hoop; a basket nut and a basket bolt are provided between the upper steel sleeve and the lower steel sleeve; the upper steel sleeve and the lower steel sleeve are connected with the basket nut through the basket bolt; the basket nut includes a basket nut connecting round steel, a basket nut left-handed threaded nut and a basket nut right-handed threaded nut.

[0014] Preferably, an anti-sway device is provided between the steel clamp and the inner wall of the outer cylinder, with the main force direction being along the tangential direction of the inner cylinder; the anti-sway device is evenly or symmetrically arranged on the outer circumference of the inner cylinder wall.

[0015] Preferably, the anti-sway device includes a sliding anti-sway short beam, a guide rail and a lower end plate of the rail; a sliding anti-sway short beam is provided on the steel clamp, and a guide rail is provided on the inner wall of the outer cylinder, and the guide rails are arranged on both sides of the horizontal sliding anti-sway short beam; a lower end plate of the rail for limiting the maximum stroke of the sliding short beam is provided below the guide rail.

[0016] Preferably, a supporting steel frame is provided between the guide slide rail and the inner wall of the outer cylinder.

[0017] Preferably, the inner tube is a fiberglass inner tube chimney.

[0018] Preferably, the inner tube chimney is configured as a multi-tube chimney.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The FRP inner tube provided by the present invention adopts the steel clamp technology with comprehensive functions such as stiffening, anti-sway, inner tube connection, and suspension and hoisting. Compared with the ordinary wound FRP stiffening ribs, the steel clamp provides a stronger rigidity support for the FRP inner tube, which can meet the complex stress conditions of the inner tube; the steel clamp provides sufficient conditions for the installation of the anti-sway device, and the anti-sway device has the composite functions of anti-sway and suspension, which meets the needs of anti-sway and chimney hoisting and inner tube connection; the FRP inner tube is connected to the steel clamp by the basket nut technology, which can solve the problem that the FRP inner tube inside the steel chimney is difficult to achieve with the socket-type connection due to the small space, and eliminates the leakage of flue gas condensate. The present invention provides a safe, reliable, economical and applicable chimney anti-corrosion technical solution for the application of FRP inner tubes in the field of sleeve-type steel chimneys. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a typical sleeve-type self-supporting steel chimney elevation diagram;

[0022] Figure 2 This is a schematic diagram of a standard pipe section of a socket-type fiberglass inner tube;

[0023] Figure 3 This is a cross-sectional view of the wall of a standard pipe section of a socket-type fiberglass inner tube;

[0024] Figure 4 This is a schematic diagram of the fiberglass inner tube being assembled and connected through a steel clamp;

[0025] Figure 5 for Figure 1 Detailed diagram of node a in;

[0026] Figure 6 It is a detailed drawing of a turnbuckle nut, including connecting round steel, left-hand thread nut and right-hand thread nut;

[0027] Figure 7This is a schematic diagram of the connection between the steel hoop and the turnbuckle bolt sleeve;

[0028] Figure 8 This is a schematic diagram of a channel steel hoop;

[0029] Fig. 9 This is a schematic diagram of a square steel tube steel hoop;

[0030] Fig.10 for Figure 1 AA section view, plan layout of the tangential anti-sway device;

[0031] Fig.11 for Figure 1 The BB section view is the plan layout of the tangential anti-sway device when the distance between the inner and outer cylinders is large;

[0032] Fig.12 for Fig.11 EE sectional view in the figure, schematic diagram of the connection between the tangential anti-sway slide rail and the steel frame;

[0033] Fig.13 for Fig.10 The b-node diagram is the large-scale diagram of the tangential anti-sway node;

[0034] Fig.14 for Fig.13 DD section view, schematic diagram of the tangential anti-sway short beam using H-shaped steel;

[0035] Fig.15 for Fig.13 The variation of DD section view, schematic diagram of the tangential anti-sway short beam using a circular steel tube;

[0036] Fig.16 This is a schematic diagram of radial sway prevention of a traditional sleeve-type steel chimney;

[0037] Fig.17 This is a schematic diagram of the force on the inner cylinder of the tangential anti-sway device, which bears the main horizontal load transmitted by the outer cylinder symmetrically along the tangential direction of the cylinder wall;

[0038] Fig.18 This is a schematic diagram of the force and deformation of the inner cylinder under the radial anti-sway device. The inner cylinder is subjected to radial force;

[0039] Fig.19 for Figure 1 The CC section view is a plan view of the bottom support platform of the FRP inner tube, which is a typical support structure diagram of the bottom of the inner tube when it is an inner tube;

[0040] Fig. 20 for Fig.19 FF cross-sectional view.

[0041] Reference numerals: 1. outer tube; 2. inner tube; 3. chimney rain cap; 4. chimney tangential anti-sway device; 5. inner tube bottom support platform; 6. chimney inspection hole; 7. acid discharge pipe; 8. flue; 9. acid discharge funnel; 10. connecting flange; 11. radial anti-sway device; 12. radial force deformation of inner tube; 201. fiberglass inner tube socket; 202. fiberglass inner tube socket; 203. resin material; 301. upper steel hoop steel; 302. lower steel hoop steel; 303. steel hoop connecting steel plate; 304. Steel casing; 305. Basket bolt; 306. Connecting round steel of basket nut; 307. Left-handed threaded nut of basket nut; 308. Right-handed threaded nut of basket nut; 401. Sliding anti-sway short beam; 402. Guide rail; 403. Lower end plate of rail; 404. Stiffening rib of rail; 405. Rubber pad; 406. Self-tapping screw; 407 Steel frame horizontal beam; 408. Diagonal support; 409. Strut; 501. Support ring beam; 502. Radial radiation beam; 503. Radial diagonal support. DETAILED DESCRIPTION

[0042] In order to make the present invention more clearly understood, a preferred embodiment is described in detail with reference to the accompanying drawings as follows:

[0043] like Figure 1-20As shown, the present invention provides a chimney with a steel clamp inner tube, wherein the chimney's outer tube is sleeved with an inner tube of the chimney connected in sections, and the connection of each section of the inner tube is provided with a socket and spigot structure; a steel clamp is sleeved on the outer wall of the inner tube adjacent to the connection of the inner tube pipe sections, and a steel clamp connection device is provided between the upper and lower steel clamps at the connection of the inner tube pipe sections; and an anti-sway device is provided between the inner wall of the outer tube of the chimney and the steel clamp. The plug-in structure at the connection of the inner tube includes a socket and a spigot, and the lower end of each pipe section is a spigot, and the upper end is a bell, and the caliber of the bell end is partially enlarged, and its inner diameter is larger than the outer diameter of the spigot end. When installing and connecting, the spigot of the upper pipe section is inserted into the bell of the lower pipe section, and the annular gap between the two ports is filled with resin or anti-corrosion materials. A funnel-shaped condensate discharge mechanism for collecting and discharging condensate is provided at the bottom of the inner tube. The steel hoop connection device includes an upper steel hoop, a lower steel hoop and a turnbuckle bolt; the steel hoop includes a steel hoop steel and a steel hoop connection steel plate; the steel hoop steel is connected to the inner tube through the steel hoop connection steel plate; the upper steel hoop of the tube section and the lower steel hoop of the adjacent tube section are connected through a turnbuckle bolt. An upper steel casing is provided on the upper steel hoop steel, and a lower steel casing is provided on the lower steel hoop steel; a turnbuckle nut and a turnbuckle bolt are provided between the upper steel casing and the lower steel casing; the upper steel casing and the lower steel casing are connected to the turnbuckle nut through the turnbuckle bolt; the turnbuckle nut includes a turnbuckle nut connection round steel, a turnbuckle nut left-handed threaded nut and a turnbuckle nut right-handed threaded nut. A tangential anti-sway device is provided between the steel hoop and the inner wall of the outer tube, which adopts the tangential direction of the inner tube as the main force direction; the anti-sway device is evenly or symmetrically arranged on the outer circumference of the inner and outer tube walls. The anti-sway device includes a sliding anti-sway short beam, a guide rail and a lower end plate of the rail; a sliding anti-sway short beam is provided on the steel hoop, and a guide rail is provided on the inner wall of the outer tube, and the guide rail is provided on both sides of the horizontal sliding anti-sway short beam; a lower end plate of the rail is provided below the guide rail to limit the maximum travel of the sliding short beam. A supporting steel frame is provided between the guide rail and the inner wall of the outer tube. The inner tube is set as a glass fiber reinforced plastic inner tube chimney. The inner tube chimney is set as a multi-tube chimney.

[0044] Example

[0045] like Figure 1-20As shown, the technical solution of the present invention provides a steel hoop FRP inner tube chimney, which realizes the socket-type connection of the FRP inner tube through the steel hoop, and solves the problem of smoke condensate leakage; the steel hoop realizes the reinforcement, anti-sway and hoisting of the FRP inner tube, solves the application problem of the FRP inner tube in the field of steel chimneys, and provides a safe and reliable structural form for the anti-corrosion of steel chimneys. The steel hoop FRP inner tube chimney has the characteristics of high rigidity and can bear large loads compared with the FRP wrapped stiffening ribs. The stiffening rib has the comprehensive functions of reinforcement, anti-sway, suspension and inner tube connection. The inner tube of the steel hoop FRP inner tube chimney adopts the socket-type connection, which can effectively solve the problem of smoke condensate leakage. The inner tube connection of the steel hoop FRP inner tube chimney is to connect the upper and lower steel hoops by using a basket nut to solve the problem of steel hoop connection in a small space. The steel hoop FRP inner tube chimney has a steel hoop as a force-bearing connection member for anti-sway and suspension. The steel-hoop FRP inner tube chimney adopts an anti-sway device with the tangential direction of the inner tube as the main force direction (hereinafter referred to as "tangential anti-sway"), which can greatly reduce the stress effect and deformation of the inner tube, improve the stability of the inner tube, and reduce the wall thickness of the inner tube. Traditional sleeve-type steel chimneys generally adopt an anti-sway device with radial top pressure force (hereinafter referred to as "radial anti-sway"), which causes large local deformation of the inner tube, affects the stability of the inner tube, and increases the wall thickness of the inner tube. The force points of "tangential anti-sway" are greater than or equal to 2 at any time; when the anti-sway points along the circumference are less than or equal to 4, the "radial anti-sway" force point is only 1, which has an adverse effect on the inner tube. When the steel-hoop FRP inner tube chimney is hoisted, its inner tube is suspended on the lower end plate of the outer tube anti-sway slide rail through the anti-sway short beam connected to the steel hoop, meeting the needs of sequential connection of the inner and outer tubes. The anti-sway slide rail of the steel-hoop FRP inner tube chimney is fixed on the outer tube. In the tube section with a large distance between the inner and outer tubes, a supporting steel frame can be set at the anti-sway position of the outer tube, and the anti-sway slide rail can be fixed on the supporting steel frame to reduce the local bending moment caused by the anti-sway short beam on the steel hoop. For the steel-hoop FRP inner tube chimney, when the number of its inner tubes is 1, the bottom support can be a steel platform composed of a radial radiation steel frame and annular steel beams. For the steel-hoop FRP inner tube chimney, the bottom plate of the inner tube adopts a funnel form to improve the efficiency of condensate removal and reduce the corrosion of the outer tube by accumulated liquid. For the steel-hoop FRP inner tube chimney, the outer tube of the steel-hoop FRP inner tube chimney can be applied to outer tubes of other materials except for steel structure; the anti-sway device can be used for metal inner tubes; the steel hoop can be used for metal inner tubes; the bottom drainage funnel can be used for metal inner tubes; the main technology is applicable to multi-tube steel chimneys.

[0046] Figure 1A relatively typical overall chimney elevation view of the steel-hoop fiberglass inner tube chimney of the present invention is shown, which includes main parts such as an outer tube 1, an inner tube 2, a chimney rain cap 3, a chimney tangential anti-sway device 4, an inner tube bottom support platform 5, a chimney inspection hole 6, an acid discharge pipe 7, a flue 8, an acid discharge funnel 9 and a connecting flange 10. Among them, the outer tube 1 mainly bears the external load and the role of the inner tube; the FRP inner tube 2 bears the smoke emission function and has heat-resistant and anti-corrosion functions; the FRP inner tube 2 applies all its weight to the outer tube 2 through the bottom support platform 5; the FRP inner tube 2 and the outer tube 1 are relatively free to deform vertically along the tangential anti-sway device 4, but the tangential anti-sway device 4 limits the horizontal displacement of the inner tube 2, and maintains the same horizontal displacement as the outer tube 1 at the anti-sway point, thereby realizing the horizontal anti-sway function; the rain cap 3 prevents condensation generated by rainwater on the top of the chimney or smoke and rain from entering the gap between the inner and outer tubes; the bottom of the inner tube adopts a funnel-shaped condensation discharge structure, which can eliminate the phenomenon of condensation gathering between the inner tube wall and the general inclined bottom plate, and reduce the impact of corrosion.

[0047] Figure 2 and Figure 3 The elevation and cross-section of the standard inner tube section of the steel hoop FRP inner tube chimney of the present invention are shown, which is composed of a FRP inner tube socket 201 and a FRP inner tube socket 202. Each pipe section is connected by a socket, and the annular gap between the socket and the socket is poured with a resin or other anti-corrosion material 203 (see Figure 5 ), thereby avoiding smoke and condensate leakage problems. Figure 4 The vertical view of the steel-hoop fiberglass inner tube chimney segmented inner tube after assembly is shown.

[0048] Figure 5The steel hoop connection node diagram of the glass fiber reinforced plastic inner tube chimney of the present invention is shown. An upper steel hoop profile steel 301 is arranged on the lower outer wall of the socket 202 of the i-th section of the glass fiber reinforced plastic inner tube. The upper steel hoop profile steel 301 is connected to the lower steel hoop profile steel 302 on the socket 201 of the i+1-th section through a basket bolt 305 and a basket nut. This overcomes the problem of a large space required for fastening nuts on the top surface of the upper steel hoop and the bottom surface of the lower steel hoop respectively using a long screw in the patented technology of "multifunctional stiffening connection device for glass fiber reinforced plastic inner tube" (Chinese patent number: ZL201720498219.8). The steel hoop connection can be completed in a smaller space, thereby realizing the segmented connection of the glass fiber reinforced plastic inner tube. The basket nut is composed of a basket nut connecting round steel 306, a basket nut left-handed threaded nut 307 and a basket nut right-handed threaded nut 308. The upper and lower basket bolts 305 are tightened by rotating the basket nut. Small installation space is required to meet the application of the steel hoop fiberglass inner tube in the field of steel chimneys. The steel sleeve 304 is fixed on the steel hoop steel 301 or 302. Compared with the smaller diameter of the basket bolt, the larger size of the steel sleeve 304 has the ability to adjust the construction deviation. Connecting the basket bolt 305 through the steel sleeve 304 is suitable for the case where the cross-section size of the steel hoop is small. When the cross-section of the steel hoop is large, the basket bolt 305 can be directly connected through the steel hoop without the need for the steel sleeve 304.

[0049] Figure 7 The schematic diagram of the connection between the steel hoop fiberglass inner tube chimney steel hoop section steel 301 or 302 and the steel casing 304 of the present invention is shown, and the steel casing 304 and the steel hoop are connected by welding. Figure 8 , Fig. 9 Displays different cross-sections of steel clamps.

[0050] Fig.10 The plan view of the tangential anti-sway device 4 of the steel hoop glass fiber reinforced plastic inner tube chimney is shown. The four tangential anti-sway devices 4 are evenly arranged along the circumferential direction between the inner and outer tubes, and each pair is arranged 180 degrees symmetrically. The principle of the inner and outer tubes of the tangential anti-sway device 4 transmitting horizontal force is that the rubber pad 405 fixed on the sliding anti-sway short beam 401 by self-tapping screws 406 is in sliding contact with the guide rail 402 to transmit internal force, and the direction of the internal force is parallel to the tangent line at the force point of the inner tube (see Fig.17 ), and symmetrically generated, which is most beneficial to the inner cylinder force. The tangential anti-sway device 4 has the characteristics of only limiting the horizontal displacement of the inner cylinder (consistent with the outer cylinder), and the vertical deformation is not restricted, thereby realizing the anti-sway function. In general, the four tangential anti-sway devices 4 can jointly bear the horizontal thrust applied by the outer cylinder. In unfavorable cases, two symmetrical tangential anti-sway devices 4 jointly bear the horizontal thrust applied by the outer cylinder (see Fig.17 ).

[0051] Generally, sleeve-type steel chimneys are used to stop sway. Fig.16The radial anti-sway device 11 shown in the figure is used to prevent sway by radial pressure. Its force characteristic is that the inner cylinder is unevenly pressed in the radial direction, resulting in large deformation. In an unfavorable state, only one anti-sway point of the radial anti-sway device is stressed, and the inner cylinder is deformed as shown in FIG. Fig.18 The inner tube is deformed radially by force 12, which has an adverse effect on the local stability of the inner tube, and there is no stiffening ring at the anti-sway position of the inner tube, which greatly reduces the safety of the inner tube.

[0052] The steel-hoop fiberglass inner tube chimney tangential anti-sway devices 4 described in the present invention are evenly and symmetrically arranged along the circumference. The actual number of applications is not limited to this, but is at least not less than 3.

[0053] The sliding anti-sway short beam 401 of the tangential anti-sway device 4 of the steel hoop glass fiber reinforced plastic inner tube chimney adopts an H-shaped steel section. When a circular section is adopted (see Fig.15 ) The rubber pad 405 may not be provided.

[0054] When the distance between the inner and outer cylinders is large, the use of the tangential anti-sway device 4 will produce a large local bending moment M, which will have an adverse effect on the inner cylinder. Fig.11 and Fig.12 The structure shown in the figure reduces the length of the short anti-swaying beam 401, which can effectively reduce the local bending moment of the inner tube. A supporting steel frame is set between the guide rail 402 and the inner wall of the outer tube to support and reinforce it. The guide rail 402 is supported by the horizontal beam 407 of the steel frame and the inclined support 408 connecting the horizontal beam 407 of the steel frame. The rail stiffening ribs 404 welded on both sides of the guide rail 402 are fixed to the inner wall of the outer tube through the support rod 409.

[0055] The steel-hoop fiberglass inner tube chimney tangential anti-sway device 4 described in the present invention can slide the sliding anti-sway short beam 401 to the lower end plate 403 of the slide rail during the chimney hoisting and installation. The lower end plate 403 of the slide rail supports the sliding anti-sway short beam 401 and can bear the weight of the entire inner tube, thereby realizing the suspension function of the inner tube and meeting the needs of hoisting and inner tube connection.

[0056] Fig.19 and Fig. 20 The structure of the bottom support platform 5 of the steel hoop glass fiber reinforced plastic inner tube chimney of the present invention is shown. The inner tube acts on the support ring beam 501, and the inner tube is evenly stressed, which is beneficial to the stress of the inner and outer tubes. When the distance between the inner and outer tubes is small, the radial radiation beam 502 and the radial inclined support 503 can be eliminated, and the support ring beam 501 can be directly welded to the outer tube 1. The cross-sectional form of the support ring beam 501 can be "I-shaped" or box-shaped. When directly welded to the outer tube, it can also be in the form of an annular bracket.

[0057] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A steel hoop inner tube chimney, characterized in that: The chimney's outer tube is sleeved with an inner tube of the chimney connected in sections, and the connection of the inner tube sections is provided with a socket and spigot structure; a steel clamp is sleeved on the outer wall of the inner tube adjacent to the connection of the inner tube sections, and a steel clamp connection device is provided between the upper and lower steel clamps at the connection of the inner tube sections; a shaking prevention device is provided between the inner wall of the chimney's outer tube and the steel clamp; The plug-in structure at the inner tube connection includes a socket and a spigot; the lower end of each inner tube section is provided with a spigot, and the upper end is provided with a socket; the inner diameter of the socket end is set to be larger than the outer diameter of the spigot end; The steel hoop connection device comprises an upper steel hoop, a lower steel hoop and a turnbuckle bolt; the steel hoop comprises a steel hoop profile and a steel hoop connection steel plate, the steel hoop profile is connected to the inner tube via the steel hoop connection steel plate; the upper steel hoop and the lower steel hoop are connected via a turnbuckle bolt; The upper steel hoop is provided with an upper steel casing, and the lower steel hoop is provided with a lower steel casing; a basket nut and a basket bolt are provided between the upper steel casing and the lower steel casing; the upper steel casing and the lower steel casing are connected with the basket nut through the basket bolt; the basket nut includes a basket nut connecting round steel, a basket nut left-handed thread nut and a basket nut right-handed thread nut; A tangential anti-sway device is provided between the steel hoop and the inner wall of the outer cylinder, with the tangential direction of the inner cylinder as the main force direction; the anti-sway device is evenly or symmetrically arranged on the circumference of the inner and outer cylinder walls; The anti-sway device includes a sliding anti-sway short beam, a guide rail and a lower end plate of the rail; a sliding anti-sway short beam is provided on the steel clamp, and a guide rail is provided on the inner wall of the outer cylinder, and the guide rails are arranged on both sides of the horizontal sliding anti-sway short beam; a lower end plate of the rail for limiting the maximum stroke of the sliding short beam is provided below the guide rail.

2. A steel hoop inner tube chimney as claimed in claim 1, characterized in that: A funnel-shaped condensate discharge mechanism for collecting and discharging condensate is provided at the bottom of the inner cylinder.

3. A steel hoop inner tube chimney as claimed in claim 1, characterized in that: A supporting steel frame is arranged between the guide slide rail and the inner wall of the outer cylinder.

4. A steel hoop inner tube chimney as claimed in claim 3, characterized in that: The inner tube is set as a glass fiber reinforced plastic inner tube chimney.

5. A steel hoop inner tube chimney as claimed in claim 3, characterized in that: The inner tube chimney is configured as a multi-tube chimney.

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