Thermal power plant flue connecting device convenient to disassemble and method

Abstract

The invention relates to the technical field of pipeline connection, and discloses a thermal power plant flue connecting device and method convenient to disassemble, the thermal power plant flue connecting device comprises a first flue and a second flue, and a disassembly and assembly mechanism is arranged between the first flue and the second flue; the dismounting and mounting mechanism comprises a first mounting ring and a second mounting ring, one end of the first flue is fixedly sleeved with the first mounting ring, and one end of the second flue is fixedly sleeved with the second mounting ring. A rotating block is rotated to enable a connecting block to drive a wedge-shaped sliding block to slide in a wedge-shaped sliding rail under the action of a thread, so that a steel wire rope is pulled and drives a fixing rod to move through a limiting block under the guidance of a pulley, the fixing rod is separated from a fixing hole and retracts, and then a first mounting ring and a second mounting ring are separated; the fixing ring is separated from the inserting groove, the sealing ring is separated from the sealing groove, the first flue and the second flue can be quickly disassembled, operation is easy and convenient, and the maintenance cost and the downtime of thermal power plant equipment are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline connection, and particularly to a disassembly - convenient flue connection device and method for thermal power plants. Background Technique

[0002] A thermal power plant, the full name of which is a thermal power station, is a facility that burns fossil fuels (such as coal, oil or natural gas) to generate electric energy. The basic principle of thermal power generation is to release heat energy by burning fuel, heat water to generate steam, then use the steam to drive the steam turbine to rotate, and finally convert mechanical energy into electric energy through a generator connected to the steam turbine. In a thermal power plant, the flue is an important component, which is used to guide the flue gas generated by combustion from the boiler to the chimney and discharge it into the atmosphere.

[0003] Traditional flue connections usually adopt welding or bolt - fixing methods. Although these methods can ensure the structural stability, when maintenance or component replacement is required, the disassembly process is complex and time - consuming, increasing the maintenance cost and downtime. Therefore, developing a disassembly - convenient flue connection device is of great significance for improving the operation efficiency and maintenance convenience of thermal power plants. Summary of the Invention

[0004] The purpose of the present invention is to provide a disassembly - convenient flue connection device and method for thermal power plants to solve the problems raised in the above - mentioned background technique.

[0005] To achieve the above - mentioned purpose, the present invention adopts the following technical solutions: A disassembly - convenient flue connection device for thermal power plants includes a first flue and a second flue, and a disassembly and assembly mechanism is arranged between the first flue and the second flue; The disassembly and assembly mechanism includes a first mounting ring and a second mounting ring. The first mounting ring is fixedly sleeved at one end of the first flue, the second mounting ring is fixedly sleeved at one end of the second flue. One end of the first mounting ring is fixedly provided with a fixing ring, and fixing holes are opened on the fixing ring. A slot is opened at one end of the second mounting ring close to the first mounting ring, and the fixing ring is inserted into the slot; A fixing frame is fixedly arranged on the second mounting ring, a pulley is rotatably arranged on the fixing frame. A fixing rod adapted to the fixing hole is slidably penetrated through the second mounting ring, a limiting block is fixedly arranged on the fixing rod, a spring is sleeved on the fixing rod. A wedge - shaped slide rail is fixedly arranged at one end of the second mounting ring away from the first mounting ring, a wedge - shaped slider is slidably arranged in the wedge - shaped slide rail, a connecting block is fixedly arranged on the wedge - shaped slider, a threaded sleeve is penetrated through the connecting block. A fixing block is fixedly arranged on the wedge - shaped slide rail, and a screw rod threadedly connected to the threaded sleeve is rotatably arranged on the fixing block. A steel wire rope is arranged between the wedge - shaped slider, the pulley and the limiting block.

[0006] A further improvement of the present invention is that a sealing groove is provided at one end of the fixing ring close to the second mounting ring.

[0007] A further improvement of the present invention is that a sealing ring is fixedly arranged in the slot, and the sealing ring is hermetically inserted into the sealing groove.

[0008] A further improvement of the present invention is that four fixing holes are provided on the fixing ring, and the four fixing holes are evenly distributed on the fixing ring with the axis of the fixing ring as the base point.

[0009] A further improvement of the present invention is that four fixing rods, fixing frames and wedge-shaped slide rails are provided.

[0010] A further improvement of the present invention is that the spring is fixedly arranged between the limiting block and the second mounting ring.

[0011] A further improvement of the present invention is that a rotating block is fixedly arranged on the screw rod.

[0012] A further improvement of the present invention is that a hexagonal hole is provided on the rotating block.

[0013] A further improvement of the present invention is that one end of the steel wire rope is fixedly connected to the wedge-shaped slider, and the other end of the steel wire rope bypasses the surface of the pulley and is fixedly connected to the limiting block.

[0014] A connection method for a connection device of a flue gas duct in a thermal power plant that is convenient for disassembly includes: When the first flue and the second flue are connected, the screw rod is rotated. Under the threaded connection of the screw rod and the nut sleeve, the connection block drives the wedge-shaped slider to move in the wedge-shaped slide rail. When the wedge-shaped slider moves, it can pull the steel wire rope. Under the guidance of the pulley on the fixing frame, the limiting block can drive the fixing rod to move under the pull of the steel wire rope, so that the fixing rod can move away from the slot and retract outward. At this time, the spring is in a compressed state. Then, the first flue and the second flue are butted. At this time, the fixing ring on the first mounting ring automatically inserts into the slot of the second mounting ring, and the second mounting ring automatically inserts into the first mounting ring. Then, the screw rod is rotated in the reverse direction to drive the connection block to reset. The fixing rod is pushed to reset under the elastic action of the spring, so that the fixing rod automatically snaps into the fixing hole on the fixing ring, realizing the locking and fixing of the first mounting ring and the second mounting ring, and further completing the quick connection of the first flue and the second flue; When disassembling the first flue and the second flue, the fixing rod is disengaged from the fixing hole and retracted, and then the first mounting ring and the second mounting ring are separated, and the quick disassembly of the first flue and the second flue can be completed.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects: The detachable flue gas duct connection device and method provided by the present invention rotate the rotating block to drive the screw rod to rotate, so that the connecting block drives the wedge-shaped slider to move along the wedge-shaped slide rail and pull the steel wire rope. Under the guidance of the pulley, the steel wire rope can drive the fixing rod to retract outward through the limiting block. Insert the fixing ring into the slot, and the sealing ring will be inserted into the sealing groove accordingly. When the sealing ring and the sealing groove are closed, the sealing performance of the connection between the first flue gas duct and the second flue gas duct can be improved, preventing the leakage of flue gas. Then, by rotating the rotating block in the reverse direction, the screw rod rotates in the reverse direction and drives the connecting block to reset. Under the elastic action of the spring, the fixing rod is pushed to reset, so that the fixing rod automatically snaps into the fixing hole, realizing the locking and fixing of the first mounting ring and the second mounting ring, and further completing the rapid connection of the first flue gas duct and the second flue gas duct.

[0016] The detachable flue gas duct connection device and method provided by the present invention rotate the rotating block to drive the connecting block to slide along the wedge-shaped slide rail under the action of the thread, so that the steel wire rope is subjected to a tensile force and drives the fixing rod to move through the limiting block under the guidance of the pulley. As a result, the fixing rod disengages from the fixing hole on the fixing ring and retracts. Then, separate the first mounting ring and the second mounting ring, separate the fixing ring from the slot, and separate the sealing ring from the sealing groove, and the rapid disassembly of the first flue gas duct and the second flue gas duct can be completed. The operation is simple and convenient, effectively reducing the maintenance cost and downtime of the thermal power plant equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional structure schematic diagram of a detachable flue gas duct connection device in an embodiment of the present invention; Figure 2 It is a separation structure schematic diagram of the first flue gas duct and the second flue gas duct in an embodiment of the present invention; Figure 3 It is a three-dimensional structure schematic diagram of the first mounting ring in an embodiment of the present invention; Figure 4 It is a three-dimensional structure schematic diagram of the second mounting ring in an embodiment of the present invention; Figure 5 It is a three-dimensional structure schematic diagram of the fixing bracket in an embodiment of the present invention; Figure 6 In an embodiment of the present invention Figure 5 The enlarged structure diagram of part A.

[0019] Description of the reference numerals in the drawings: 1. First flue; 2. Second flue; 3. Disassembly and assembly mechanism; 301. First mounting ring; 302. Second mounting ring; 303. Fixed ring; 304. Fixed hole; 305. Sealing groove; 306. Slot; 307. Sealing ring; 308. Fixed rod; 309. Limit block; 310. Spring; 311. Fixed bracket; 312. Pulley; 313. Wedge-shaped slide rail; 314. Wedge-shaped slider; 315. Connecting block; 316. Fixed block; 317. Screw; 318. Rotating block; 319. Nut sleeve; 320. Steel wire rope; 321. Hexagonal hole. Detailed implementation manners

[0020] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0023] In the present invention, unless otherwise clearly defined and limited, the terms "mount", "connect", "connection", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified or limited, the first feature being “on” or “under” the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being “under”, “beneath” and “underneath” the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0025] It should also be understood that the terms used in the specification of the present invention are merely for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly dictates otherwise, the singular forms “a”, “an” and “the” are intended to include the plural forms.

[0026] It should be further understood that the term “and / or” used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] Schematic diagrams of various structures according to the disclosed embodiments of the present invention are shown in the drawings. These drawings are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the drawings, and their relative sizes and positional relationships are merely exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art can additionally design regions / layers with different shapes, sizes and relative positions according to actual needs.

[0028] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0029] Embodiment 1 Combined with Figures 1 - 6 , a detachable flue gas duct connection device provided by the present invention includes a first flue 1 and a second flue 2, and a disassembly and assembly mechanism 3 is provided between the first flue 1 and the second flue 2.

[0030] Refer to Figures 2 - 4, further obtained, the disassembly and assembly mechanism 3 includes a first mounting ring 301 and a second mounting ring 302. The first mounting ring 301 is fixedly sleeved on one end of the first flue 1, and the second mounting ring 302 is fixedly sleeved on one end of the second flue 2. A fixing ring 303 is fixedly arranged at one end of the first mounting ring 301. Fixing holes 304 are formed in the fixing ring 303. A total of four fixing holes 304 are formed in the fixing ring 303. The four fixing holes 304 are evenly distributed on the fixing ring 303 with the axis of the fixing ring 303 as the base point. Through the even distribution of the four fixing holes 304, the connection points between the first mounting ring 301 and the second mounting ring 302 are evenly distributed, so that the first flue 1 and the second flue 2 can be firmly connected and are not likely to become disengaged. A slot 306 is formed at one end of the second mounting ring 302 close to the first mounting ring 301, and the fixing ring 303 is inserted into the slot 306; a sealing groove 305 is formed at one end of the fixing ring 303 close to the second mounting ring 302, and a sealing ring 307 is fixedly arranged in the slot 306, and the sealing ring 307 is hermetically inserted into the sealing groove 305.

[0031] Specifically, by inserting the fixing ring 303 into the slot 306, the sealing ring 307 is inserted into the sealing groove 305 accordingly. When the sealing ring 307 and the sealing groove 305 are closed, the sealing performance of the connection between the first flue 1 and the second flue 2 can be improved, preventing the leakage of flue gas.

[0032] Refer to Figures 4 - 6, it is further obtained that a fixing frame 311 is fixedly arranged on the second mounting ring 302, and a pulley 312 is rotatably arranged on the fixing frame 311. Through the arrangement of the pulley 312, the steel wire rope 320 can move more smoothly in stretching. A fixing rod 308 adapted to the fixing hole 304 is slidably penetrated through the second mounting ring 302. A limiting block 309 is fixedly arranged on the fixing rod 308, and a spring 310 is sleeved on the fixing rod 308. The spring 310 is fixedly arranged between the limiting block 309 and the second mounting ring 302. Through the arrangement of the four fixing rods 308, the locking performance of the connection between the first mounting ring 301 and the second mounting ring 302 can be greatly improved. Through the arrangement of the spring 310, it is convenient to give a reset boosting force to the fixing rod 308 when the fixing rod 308 is engaged with the fixing hole 304. A wedge-shaped slide rail 313 is fixedly arranged at one end of the second mounting ring 302 away from the first mounting ring 301. A wedge-shaped slide block 314 is slidably arranged in the wedge-shaped slide rail 313. A connecting block 315 is fixedly arranged on the wedge-shaped slide block 314. A screw sleeve 319 is penetrated through the connecting block 315. A fixing block 316 is fixedly arranged on the wedge-shaped slide rail 313. A screw rod 317 threadedly connected with the screw sleeve 319 is rotatably arranged on the fixing block 316. A steel wire rope 320 is arranged between the wedge-shaped slide block 314, the pulley 312 and the limiting block 309. Four fixing rods 308, fixing frames 311 and wedge-shaped slide rails 313 are arranged. A rotating block 318 is fixedly arranged on the screw rod 317. A hexagonal hole 321 is formed in the rotating block 318. Through the arrangement of the rotating block 318, it is convenient for the operator to directly rotate the screw rod 317. Through the arrangement of the hexagonal hole 321, it is convenient for the operator to use a hexagonal screwdriver to rotate the screw rod 317 more labor-savingly. One end of the steel wire rope 320 is fixedly connected with the wedge-shaped slide block 314, and the other end of the steel wire rope 320 bypasses the surface of the pulley 312 and is fixedly connected with the limiting block 309.

[0033] Specifically, by rotating the rotary block 318, the screw 317 rotates, causing the connecting block 315 to drive the wedge-shaped slider 314 to move along the wedge-shaped slide rail 313 and pull the steel wire rope 320. Under the guidance of the pulley 312, the steel wire rope 320 can drive the fixed rod 308 to retract outward through the limit block 309. Then, by rotating the rotary block 318 in the reverse direction, the screw 317 rotates in the reverse direction and drives the connecting block 315 to reset. The fixed rod 308 is pushed to reset under the elastic action of the spring 310, so that the fixed rod 308 automatically snaps into the fixing hole 304, realizing the locking and fixing of the first mounting ring 301 and the second mounting ring 302, and further completing the quick connection of the first flue 1 and the second flue 2. By rotating the rotary block 318, the connecting block 315 drives the wedge-shaped slider 314 to slide along the wedge-shaped slide rail 313 under the action of the thread, so that the steel wire rope 320 is subjected to a tensile force and drives the fixed rod 308 to move through the limit block 309 under the guidance of the pulley 312. As a result, the fixed rod 308 disengages from the fixing hole 304 on the fixing ring 303 and retracts. Then, the first mounting ring 301 and the second mounting ring 302 are separated, the fixing ring 303 is separated from the slot 306, and the sealing ring 307 is separated from the sealing groove 305, thus completing the quick disassembly of the first flue 1 and the second flue 2. The operation is simple and convenient, effectively reducing the maintenance cost and downtime of the thermal power plant equipment.

[0034] During the actual operation process, when the first flue 1 and the second flue 2 are connected, by rotating the rotary block 318, the screw 317 rotates. Under the action of the threaded connection between the screw 317 and the nut 319, the connecting block 315 drives the wedge-shaped slider 314 to move along the wedge-shaped slide rail 313. When the wedge-shaped slider 314 moves, it can pull the steel wire rope 320. Under the guidance of the pulley 312 on the fixing bracket 311, the limit block 309 can drive the fixed rod 308 to move under the pulling of the steel wire rope 320, so that the fixed rod 308 can move away from the slot 306 and retract outward. At this time, the spring 310 is in a compressed state. Then, the first flue 1 and the second flue 2 are docked. At this time, the fixing ring 303 on the first mounting ring 301 automatically inserts into the slot 306 of the second mounting ring 302, and the sealing ring 307 on the second mounting ring 302 automatically inserts into the sealing groove 305 of the first mounting ring 301. When the sealing ring 307 and the sealing groove 305 are closed, it can improve the sealing performance of the connection between the first flue 1 and the second flue 2 and prevent the leakage of flue gas. Then, by rotating the rotary block 318 in the reverse direction, the screw 317 rotates in the reverse direction and drives the connecting block 315 to reset. The fixed rod 308 is pushed to reset under the elastic action of the spring 310, so that the fixed rod 308 automatically snaps into the fixing hole 304 on the fixing ring 303, realizing the locking and fixing of the first mounting ring 301 and the second mounting ring 302, and further completing the quick connection of the first flue 1 and the second flue 2. When disassembling the first flue 1 and the second flue 2, it is only necessary to rotate the rotating block 318 again to disengage the fixing rod 308 from the fixing hole 304 and retract it. Then, separate the first mounting ring 301 and the second mounting ring 302 to complete the rapid disassembly of the first flue 1 and the second flue 2.

[0035] Embodiment 2 A connection method of a flue connection device for a thermal power plant that is easy to disassemble provided by the present invention is characterized by including: When connecting the first flue 1 and the second flue 2, rotate the screw 317. Under the threaded connection of the screw 317 with the nut 319, the connecting block 315 drives the wedge-shaped slider 314 to move along the wedge-shaped slide rail 313. When the wedge-shaped slider 314 moves, it can pull the steel wire rope 320. Under the guidance of the pulley 312 on the fixing frame 311, the limiting block 309 can drive the fixing rod 308 to move under the pull of the steel wire rope 320, so that the fixing rod 308 can move away from the slot 306 and retract outward. At this time, the spring 310 is in a compressed state. Then, dock the first flue 1 and the second flue 2. At this time, the fixing ring 303 on the first mounting ring 301 automatically inserts into the slot 306 of the second mounting ring 302, and the second mounting ring 302 automatically inserts into the first mounting ring 301. Then, reverse-rotate the screw 317 to drive the connecting block 315 to reset. The fixing rod 308 is pushed to reset under the elastic action of the spring 310, so that the fixing rod 308 automatically snaps into the fixing hole 304 on the fixing ring 303, realizing the locking and fixing of the first mounting ring 301 and the second mounting ring 302, and further completing the rapid connection of the first flue 1 and the second flue 2; when disassembling the first flue 1 and the second flue 2, make the fixing rod 308 disengage from the fixing hole 304 and retract, and then separate the first mounting ring 301 and the second mounting ring 302 to complete the rapid disassembly of the first flue 1 and the second flue 2.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A flue connection device for a thermal power plant that is easy to disassemble, characterized in that: It comprises a first flue (1) and a second flue (2), wherein a disassembly mechanism (3) is provided between the first flue (1) and the second flue (2); The disassembly and assembly mechanism (3) comprises a first mounting ring (301) and a second mounting ring (302); the first mounting ring (301) is fixedly sleeved on one end of the first flue (1); the second mounting ring (302) is fixedly sleeved on one end of the second flue (2); a fixing ring (303) is fixedly arranged on one end of the first mounting ring (301); a fixing hole (304) is provided on the fixing ring (303); a slot (306) is provided on one end of the second mounting ring (302) close to the first mounting ring (301); the fixing ring (303) is plugged into the slot (306); A fixing frame (311) is fixedly provided on the second mounting ring (302), a pulley (312) is rotatably provided on the fixing frame (311), a fixing rod (308) adapted to the fixing hole (304) is slidably penetrated on the second mounting ring (302), a limiting block (309) is fixedly provided on the fixing rod (308), a spring (310) is sleeved on the fixing rod (308), and a wedge-shaped slide rail (313) is fixedly provided on one end of the second mounting ring (302) away from the first mounting ring (301). A wedge-shaped slider (314) is slidably arranged in the wedge-shaped slide rail (313), a connecting block (315) is fixedly arranged on the wedge-shaped slider (314), a threaded sleeve (319) is penetrated through the connecting block (315), a fixed block (316) is fixedly arranged on the wedge-shaped slide rail (313), a screw rod (317) threadedly connected to the threaded sleeve (319) is rotatably arranged on the fixed block (316), and a steel wire rope (320) is arranged between the wedge-shaped slider (314), the pulley (312) and the limit block (309).

2. The easily disassembled flue connection device for a thermal power plant according to claim 1, characterized in that: A sealing groove (305) is formed at one end of the fixing ring (303) close to the second mounting ring (302).

3. The easily disassembled flue connection device for a thermal power plant according to claim 1, characterized in that: A sealing ring (307) is fixedly disposed in the slot (306), and the sealing ring (307) is plugged into the sealing groove (305) in a sealing manner.

4. The easily disassembled flue connection device for a thermal power plant according to claim 1, characterized in that: There are four fixing holes (304) on the fixing ring (303) in total. The four fixing holes (304) are evenly distributed on the fixing ring (303) with the axis of the fixing ring (303) as a base point.

5. The easily disassembled flue connection device for a thermal power plant according to claim 1, characterized in that: Four of each of the fixing rod (308), the fixing frame (311) and the wedge-shaped slide rail (313) are provided.

6. The easily disassembled flue connection device for a thermal power plant according to claim 1, characterized in that: The spring (310) is fixedly arranged between the limiting block (309) and the second mounting ring (302).

7. The easily disassembled flue connection device for a thermal power plant according to claim 1, characterized in that: A rotating block (318) is fixedly disposed on the screw rod (317).

8. The easily disassembled flue connection device for a thermal power plant according to claim 7, characterized in that: The rotating block (318) is provided with a hexagonal hole (321).

9. The easily disassembled flue connection device for a thermal power plant according to claim 1, characterized in that: One end of the steel wire rope (320) is fixedly connected to the wedge-shaped slider (314), and the other end of the steel wire rope (320) passes around the surface of the pulley (312) and is fixedly connected to the limit block (309).

10. A method for connecting a flue connection device of a thermal power plant that is easy to disassemble according to any one of claims 1 to 9, characterized in that: include: When the first flue (1) and the second flue (2) are connected, the screw rod (317) is rotated. Under the threaded connection of the screw rod (317) and the screw sleeve (319), the connection block (315) drives the wedge-shaped slider (314) to move along the wedge-shaped slide rail (313). When the wedge-shaped slider (314) moves, it can pull the wire rope (320). Under the guidance of the pulley (312) on the fixing frame (311), the limit block (309) can drive the fixing rod (308) to move under the pull of the wire rope (320), so that the fixing rod (308) can be away from the slot (306) and retract outward. At this time, the spring (310) is in a compressed state. Then, the first flue (1) and the second flue (2) are connected. The second flue (2) is docked, at which time the fixing ring (303) on the first mounting ring (301) is automatically inserted into the slot (306) of the second mounting ring (302), and the second mounting ring (302) is automatically inserted into the first mounting ring (301), and then the screw rod (317) is rotated in the opposite direction to drive the connecting block (315) to reset, and the fixing rod (308) is pushed to reset under the elastic action of the spring (310), so that the fixing rod (308) is automatically stuck in the fixing hole (304) on the fixing ring (303), thereby achieving locking and fixing of the first mounting ring (301) and the second mounting ring (302), thereby completing the quick connection of the first flue (1) and the second flue (2); When disassembling the first flue (1) and the second flue (2), the fixing rod (308) is disengaged from the fixing hole (304) and retracted, and then the first mounting ring (301) and the second mounting ring (302) are separated, thereby completing the rapid disassembly of the first flue (1) and the second flue (2).

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