CN220453698U - Flue gas cooling device for power station boiler - Google Patents

Abstract

The utility model relates to a power station boiler flue gas cooling device, which is used for being connected with a high-temperature flue gas pipe of a power station boiler when the power station boiler flue gas is cooled, and comprises: a cooling structure having an inlet connection portion and an outlet connection portion and a cooling portion; the limiting structure is arranged on the Gao Wenyan air pipe and/or the inlet connecting part so as to enable the high-temperature flue gas pipe to be detachably connected with the inlet connecting part; the sealing ring is positioned between the Gao Wenyan air pipe and the inlet connection part, has a sealing state for blocking leakage of high-temperature flue gas from the connection position of the Gao Wenyan air pipe and the inlet connection part, and has the advantage of ensuring the sealing property between the power station boiler flue gas cooling device and the high-temperature flue gas pipe while the power station boiler flue gas cooling device and the high-temperature flue gas pipe are detachably connected.

Description

Flue gas cooling device for power station boiler

Technical Field

The utility model relates to the technical field of flue gas treatment equipment, in particular to a flue gas cooling device of a power station boiler.

Background

The utility boiler generally generates a large amount of high-temperature flue gas in the use process, and the high-temperature flue gas is usually cooled and purified by using related equipment before being discharged.

In order to ensure that high-temperature flue gas does not leak, the existing high-temperature flue gas cooling equipment is usually welded at the flue gas discharge end of a high-temperature flue gas pipe of a power station boiler, but the high-temperature flue gas cooling equipment is fixedly connected with the high-temperature flue gas pipe, so that the disassembly and overhaul of the cooling equipment are usually not facilitated, and when the cooling equipment is arranged to be detachably connected, the tightness between the high-temperature cooling equipment and the high-temperature flue gas pipe cannot be ensured.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, thereby providing a power station boiler flue gas cooling device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a utility boiler flue gas cooling device for when utility boiler flue gas cools down, link to each other with utility boiler's high temperature flue gas pipe, includes: a cooling structure having an inlet connection portion and an outlet connection portion and a cooling portion; the limiting structure is arranged on the Gao Wenyan air pipe and/or the inlet connecting part so as to enable the high-temperature flue gas pipe to be detachably connected with the inlet connecting part; the sealing ring is positioned between the Gao Wenyan air pipe and the inlet connecting part and is in a sealing state for blocking leakage of high-temperature flue gas from the connecting position of the Gao Wenyan air pipe and the inlet connecting part.

Preferably, the inlet connection part comprises a connection ring plate fixedly connected with the cooling part and a ring sleeve extending from the connection ring plate to the side far away from the cooling part; the connecting annular plate is fixedly connected with the annular sleeve and is provided with an assembly cavity; the high-temperature flue gas pipe is provided with a fixed state in which the port of the high-temperature flue gas pipe is inserted into the assembly cavity and abuts against the sealing ring, and one side end face of the sealing ring, which is far away from the high-temperature flue gas pipe, is attached to the connecting ring plate.

Preferably, the inner diameter of the sealing ring is not smaller than the inner diameter of the connecting ring plate.

Preferably, the limiting structure comprises at least one first mounting seat, second mounting seats which are arranged in one-to-one correspondence with the first mounting seats, and a connecting rod which is used for connecting the first mounting seats with the second mounting seats corresponding to the first mounting seats; the first mounting seat is mounted on the Gao Wenyan air pipe, and the second mounting seat is mounted on the outer wall surface of the connecting ring plate; one end of the connecting rod is hinged to the first mounting seat, and the other end of the connecting rod is detachably connected with the second mounting seat through connection.

Preferably, the first installation seats are distributed in a circumferential array around the Gao Wenyan air pipe, and all the first installation seats are detachably installed on the Gao Wenyan air pipe through a fixed ring assembly; the fixed ring assembly comprises at least two circular arc plates which are arranged around the high-temperature flue gas pipe, and the two adjacent circular arc plates are detachably connected through screws; the fixed ring assembly further comprises a connecting shaft, one end of the connecting shaft is connected with the first mounting seat, and the other end of the connecting shaft is connected with the arc plate.

Preferably, the device also comprises a flue gas purification device, wherein the flue gas purification device at least comprises an active carbon filter screen; the activated carbon filter screen is arranged between the sealing ring and the end of the high-temperature flue gas pipe or between the sealing ring and the connecting ring plate, or the flue gas purifying device is connected with the outlet connecting part.

Preferably, the cooling part comprises a cooling cylinder and a cooling pipeline; the cooling cylinder is internally provided with a cooling cavity for containing cooling liquid; the cooling pipelines are positioned in the cooling cavity and are spirally distributed in the cooling cavity.

Preferably, the cooling part further comprises a cooling liquid circulating pump and a cooling liquid cooling device; the inlet end and the outlet end of the cooling liquid circulating pump are respectively communicated with the cooling cavity and the cooling liquid cooling equipment, and the inlet end of the cooling liquid circulating pump is positioned at one end of the cooling cavity close to the outlet connecting part; the outlet end of the cooling device is connected with one end of the cooling cavity, which is close to the inlet connection part.

Preferably, the sealing ring is made of heat-resistant materials.

Compared with the prior art, the utility model has the beneficial effects that: through the arrangement of the limiting structure, the high-temperature flue gas pipe is detachably connected with the power station boiler flue gas cooling device, so that the power station boiler flue gas cooling device is convenient to detach and overhaul, and is connected with and installed on the high-temperature flue gas pipe; the sealing ring is arranged between the high-temperature flue gas pipe and the inlet connecting part, so that leakage of the high-temperature flue gas from the connecting position of the Gao Wenyan flue gas pipe and the inlet connecting part can be blocked.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view (partially cut away) of the structure of the present utility model.

Fig. 2 is an enlarged view of the position a in fig. 1.

Fig. 3 is an enlarged view of the position B in fig. 1.

Fig. 4 is a schematic view illustrating the positions of the connecting rod, the connecting member and the second mounting seat in fig. 3.

FIG. 5 is a schematic structural view of a retaining ring assembly.

Fig. 6 is a schematic structural view of the flue gas cleaning device.

Reference numerals illustrate:

1. a cooling structure; 11. an inlet connection; 111. connecting the annular plates; 112. a ring sleeve; 113. an assembly chamber; 12. an outlet connection; 13. a cooling unit; 131. a cooling cylinder; 1311. a cooling chamber; 132. a cooling pipe; 133. a cooling liquid circulation pump; 134. a cooling liquid cooling device; 2. a limit structure; 21. a first mount; 22. a second mounting base; 221. a notch; 23. a connecting rod; 24. a connecting piece; 241. a threaded section; 242. a nut; 243. a locking groove; 20. a retaining ring assembly; 201. an arc plate; 202. a connecting shaft; 3. a seal ring; 4. a flue gas purifying device; 41. an active carbon filter screen; 42. a mounting cover; 43. disassembling and assembling the ring; 10. high temperature flue gas pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 6, an embodiment of the present utility model provides a flue gas cooling device for a utility boiler, which is used for cooling flue gas of the utility boiler and is connected with a high-temperature flue gas pipe 10 of the utility boiler, and comprises a cooling structure 1, a limiting structure 2 and a sealing ring 3. The cooling structure 1 has an inlet connection 11 and an outlet connection 12 and a cooling portion 13, wherein the inlet connection 11 and the outlet connection 12 can be connected to the cooling portion 13 (in particular, a cooling pipe 132) by connecting lines. Some components of the limiting structure 2 are disposed on the high-temperature flue gas pipe 10, and some components are disposed on the inlet connection portion 11, so that the high-temperature flue gas pipe 10 and the inlet connection portion 11 form a detachable connection, however, in other embodiments, the limiting structure 2 may also be directly disposed on the high-temperature flue gas pipe 10 or the inlet connection portion 11. The sealing ring 3 is made of heat-resistant material, is positioned between the high-temperature flue gas pipe 10 and the inlet connecting part 11, and has a sealing state for blocking leakage of high-temperature flue gas from the connecting position of the high-temperature flue gas pipe 10 and the inlet connecting part 11. During the use, high temperature flue gas gets into cooling part 13 cooling through high temperature flue gas pipe 10 and access connection portion 11 in proper order, discharges from exit linkage portion 12 again, and through limit structure 2 and sealing washer 3's mutually supporting for can realize dismantling between power plant boiler's high temperature flue gas pipe 10 and the access connection portion 11 and be connected, dismantles when being convenient for cooling device does not use and overhauls, can avoid high temperature flue gas to leak from high temperature flue gas pipe 10 and access connection portion 11 hookup location again.

Referring to fig. 1, the cooling part 13 includes a cooling cylinder 131 and a cooling pipe 132; the cooling cylinder 131 has a cooling chamber 1311 for containing a cooling liquid therein; the cooling pipes 132 are located in the cooling cavity 1311 and are spirally distributed in the cooling cavity 1311 to increase the flow path of the high-temperature flue gas in the cooling cavity 1311 and increase the cooling effect.

Further, the cooling portion 13 further includes a coolant circulation pump 133 and a coolant cooling device 134; the inlet end and the outlet end of the cooling liquid circulating pump 133 are respectively communicated with the cooling cavity 1311 and the cooling liquid cooling device 134, and the inlet end of the cooling liquid circulating pump 133 is positioned at one end of the cooling cavity 1311 close to the outlet connection part 12; the outlet end of the cooling liquid cooling device 134 is adjacent to the end of the cooling cavity 1311 near the inlet connection 11.

Referring to fig. 1 and 2, in order to facilitate rapid positioning and assembly of the inlet connection portion 11 and the high-temperature flue gas pipe 10, in this embodiment, the inlet connection portion 11 includes a connection ring plate 111 fixedly connected with the cooling portion 13, and a ring sleeve 112 extending from the connection ring plate 111 to a side far away from the cooling portion 13, the connection ring plate 111 is fixedly connected with the ring sleeve 112, and an assembly cavity 113 is formed, and a through hole formed in the middle of the connection ring plate 111 can be communicated with the cooling portion 13, so that flue gas input by the high-temperature flue gas pipe 10 can pass through the connection ring plate 111 and enter the cooling portion 13; when the cooling device is connected with the high-temperature flue gas pipe 10, the high-temperature flue gas pipe 10 is inserted into the assembly cavity 113, and the limiting structure 2 is utilized to realize the relative fixation of the high-temperature flue gas pipe 10 and the inlet connection part 11. The arrangement of the assembly cavity 113 can realize quick positioning and inserting with the high-temperature flue gas pipe 10, after the quick positioning and inserting, the annular sleeve 112 is arranged on the periphery of the high-temperature flue gas pipe 10 in a surrounding mode, a certain limiting effect can be achieved on the port of the high-temperature flue gas pipe 10, and shaking of the high-temperature flue gas pipe 10 caused when high-temperature flue gas passes through the port of the high-temperature flue gas pipe 10 is avoided.

Further, when the high temperature flue gas pipe 10 is inserted and fixed in the assembly cavity 113, the port thereof abuts against one side end face of the sealing ring 3, and the other side end face of the sealing ring 3 far from the high temperature flue gas pipe 10 is attached to the connecting ring plate 111. The end faces of the sealing rings 3 are respectively attached to the high-temperature flue gas pipe 10 and the connecting ring plate 111, so that the sealing area is increased, and the sealing effect is better. Of course, in other embodiments, the sealing ring 3 may also be disposed around the outer wall surface of the high temperature flue gas pipe 10 by one, two or several rings, and the other side wall of the sealing ring 3 abuts against the inner wall surface of the ring sleeve 112, which is not shown in the drawings.

Furthermore, in order to prevent the high-temperature flue gas from entering the cooling portion 13 through the inlet connection portion 11 due to the arrangement of the sealing ring 3, in this embodiment, the inner diameter D1 of the sealing ring 3 is larger than the inner diameter D2 of the connection ring plate 111, and the inner diameter D1 of the sealing ring 3 is equal to the inner diameter D3 of the high-temperature flue gas pipe 10, so that the sealing ring 3 can be completely attached to the end portion of the high-temperature flue gas pipe 10 and the inlet connection portion 11. Of course, in other embodiments, the inner diameter D1 of the sealing ring 3 may be equal to the inner diameter D2 of the connection ring plate 111, and the inner diameter D1 of the sealing ring 3 may be larger than the inner diameter D3 of the high temperature flue gas pipe 10.

Referring to fig. 1 and 3 to 5, in the present embodiment, the limit structure 2 includes a first mount 21, a second mount 22, and a connecting rod 23.

Specifically, in order to stably connect the high-temperature flue gas pipe 10 and the inlet connection portion 11 by the limiting structure 2, in this embodiment, the first mounting seats 21 are distributed in two in a circumferential array around the high-temperature flue gas pipe 10 and are mounted on the high-temperature flue gas pipe 10.

Further, in order to facilitate the disassembly and assembly of the first mount 21, the first mount 21 is prevented from being retained on the high-temperature flue gas pipe 10 when cooling is not required. In this embodiment, all the first mounting seats 21 are detachably mounted on the high-temperature flue gas pipe 10 through the fixing ring assembly 20, the fixing ring assembly 20 comprises two circular arc plates 201 surrounding the high-temperature flue gas pipe 10, and the adjacent two circular arc plates 201 are detachably connected through screws, and the circular arc plates 201 can be manufactured by using metal sheets. Of course, in other embodiments, three, four or more arc plates 201 may be provided and may be combined and then enclosed on the high temperature flue gas pipe 10.

Referring to fig. 5, in this embodiment, in order to increase the distance between the connecting rod 23 and the high temperature flue gas pipe 10 and avoid interference with each other during installation, the fixing ring assembly 20 further includes a connecting shaft 202, and in this embodiment, one end of the connecting shaft 202 is connected to the first mounting seat 21, and the other end is connected to the circular arc plate 201.

The second mounting seats 22 are provided in one-to-one correspondence with the first mounting seats 21, and are mounted on the outer wall surface of the connection ring plate 111. One end of the connecting rod 23 is hinged on the first mounting seat 21, and the other end is detachably connected with the second mounting seat 22 through a connecting piece 24.

Specifically, the second mount 22 may be fixed to the outer wall surface of the connection ring plate 111 by one, two or more screws to ensure the stability of the second mount 22. The notch 221 is formed at the upper end of the second mounting seat 22 so as to facilitate the disassembly and assembly of the connecting rod 23, in this embodiment, the connecting piece 24 includes a threaded section 241, a nut 242 and a locking groove 243, wherein the threaded section 241 is disposed at one end of the connecting rod 23 near the second mounting seat 22, the nut 242 is matched with the threaded section 241, the locking groove 243 is disposed on one side end surface of the second mounting seat 22, and the diameter of the locking groove 243 is larger than the largest dimension of the notch 221, so that when the nut 242 is mounted on the threaded section 241 and is clamped into the locking groove 243, the connecting rod 23 cannot rotate along the notch 221, so as to fix the connecting rod 23 and the second mounting seat 22, and after the nut 242 is located in the locking groove 243 and is attached to the second mounting seat 22, the nut 242 is continuously rotated, so that the nut 242 can apply a certain tensile force to the connecting rod 23, and then the high-temperature flue gas pipe 10 is tensioned by the connecting rod 23 and the first mounting seat 21, so that the high-temperature flue gas pipe 10 is tightly connected with the connecting ring plate 111. When the nut 242 is removed, the connecting rod 23 can be removed from the notch 221. Of course, in other embodiments, the connecting rod 23 may be detached by axial sliding without the notch 221, and the connecting piece 24 may be provided as a buckle, a claw, or the like.

Referring to fig. 1 and 6, in order to prevent the discharged smoke from affecting the environment, in the present embodiment, a smoke purifying device 4 is further included, and the smoke purifying device 4 is connected to the outlet connection 12. The flue gas purifying device 4 comprises an active carbon filter screen 41, a mounting cover 42 and a dismounting ring 43; the mounting cover 42 is connected with the outlet connection portion 12, the activated carbon filter screen 41 is mounted on the dismounting ring 43, and the dismounting ring 43 is mounted on the mounting cover 42 in a locking column or threaded connection manner, so that the activated carbon filter screen 41 can be replaced or cleaned conveniently. The area of the activated carbon filter mesh 41 covers the outlet end of the outlet connection 12. Of course, in other embodiments, the flue gas cleaning device 4 may only be provided with the activated carbon filter screen 41, the activated carbon filter screen 41 may seal the outlet end of the outlet connection portion 12, the activated carbon filter screen 41 may also be disposed between the sealing ring 3 and the port of the high temperature flue gas pipe 10 or between the sealing ring 3 and the connection ring plate 111, for example, adhered to the sealing ring 3 or directly compressed by using the port of the high temperature flue gas pipe 10 and the sealing ring 3 or the sealing ring 3 and the connection ring plate 111, at this time, the activated carbon filter screen 41 covers the sealing ring 3, so that flue gas cleaning is performed before cooling, the cooling portion 13 is prevented from being blocked by impurities, and meanwhile, the activated carbon filter screen 41 may be replaced when the cooling device is disassembled. Not shown in the figures.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (9)

1. The utility model provides a power plant boiler flue gas cooling device for when power plant boiler flue gas cools down, link to each other with power plant boiler's high temperature flue gas pipe, its characterized in that includes:

a cooling structure having an inlet connection portion and an outlet connection portion and a cooling portion;

the limiting structure is arranged on the Gao Wenyan air pipe and/or the inlet connecting part so as to enable the high-temperature flue gas pipe to be detachably connected with the inlet connecting part;

the sealing ring is positioned between the Gao Wenyan air pipe and the inlet connecting part and is in a sealing state for blocking leakage of high-temperature flue gas from the connecting position of the Gao Wenyan air pipe and the inlet connecting part.

2. A plant boiler flue gas cooling device according to claim 1, wherein the inlet connection comprises a connection ring plate fixedly connected to the cooling portion, and a ring sleeve extending from the connection ring plate to a side remote from the cooling portion;

the connecting annular plate is fixedly connected with the annular sleeve and is provided with an assembly cavity;

the high-temperature flue gas pipe is provided with a fixed state in which the port of the high-temperature flue gas pipe is inserted into the assembly cavity and abuts against the sealing ring, and one side end face of the sealing ring, which is far away from the high-temperature flue gas pipe, is attached to the connecting ring plate.

3. A plant boiler flue gas cooling device according to claim 2, wherein the inner diameter of the sealing ring is not smaller than the inner diameter of the connection ring plate.

4. The utility boiler flue gas cooling device according to claim 2, wherein the limiting structure comprises at least one first mounting seat, second mounting seats which are arranged in one-to-one correspondence with the first mounting seats, and a connecting rod which connects the first mounting seats and the second mounting seats corresponding to the first mounting seats;

the first mounting seat is mounted on the Gao Wenyan air pipe, and the second mounting seat is mounted on the outer wall surface of the connecting ring plate;

one end of the connecting rod is hinged to the first mounting seat, and the other end of the connecting rod is detachably connected with the second mounting seat through connection.

5. The utility boiler flue gas cooling device according to claim 4, wherein the first mounting seats are distributed in a plurality of circumferential arrays around the Gao Wenyan air pipe, and all the first mounting seats are detachably mounted on the Gao Wenyan air pipe through a fixing ring assembly;

the fixed ring assembly comprises at least two circular arc plates which are arranged around the high-temperature flue gas pipe, and the two adjacent circular arc plates are detachably connected through screws;

the fixed ring assembly further comprises a connecting shaft, one end of the connecting shaft is connected with the first mounting seat, and the other end of the connecting shaft is connected with the arc plate.

6. A plant boiler flue gas cooling device according to claim 2, further comprising flue gas cleaning means comprising at least an activated carbon filter screen;

the active carbon filter screen is arranged between the sealing ring and the end of the high-temperature flue gas pipe or between the sealing ring and the connecting ring plate,

or alternatively, the first and second heat exchangers may be,

the flue gas purification device is connected with the outlet connection part.

7. A plant boiler flue gas cooling device according to claim 1, wherein the cooling section comprises a cooling cartridge and a cooling duct;

the cooling cylinder is internally provided with a cooling cavity for containing cooling liquid;

the cooling pipelines are positioned in the cooling cavity and are spirally distributed in the cooling cavity.

8. A plant boiler flue gas cooling device according to claim 7, wherein the cooling section further comprises a cooling liquid circulation pump and a cooling liquid cooling apparatus;

the inlet end and the outlet end of the cooling liquid circulating pump are respectively communicated with the cooling cavity and the cooling liquid cooling equipment, and the inlet end of the cooling liquid circulating pump is positioned at one end of the cooling cavity close to the outlet connecting part;

the outlet end of the cooling device is connected with one end of the cooling cavity, which is close to the inlet connection part.

9. A plant boiler flue gas cooling device according to claim 1, wherein the sealing ring is made of a heat resistant material.