Anti-deformation platen superheater mounting structure

Abstract

The utility model relates to the field of platen superheater installation, in particular to an anti-deformation platen superheater installation structure. According to the anti-deformation platen superheater installation structure, an anti-deformation platen superheater is arranged on one side of a boiler, the anti-deformation platen superheater and the boiler are arranged in a spaced mode, and at least one part of the anti-deformation platen superheater and a hearth of the boiler are oppositely arranged in a spaced mode. The installation position of the anti-deformation platen superheater is optimized, at least one part of the anti-deformation platen superheater and the hearth of the boiler are oppositely arranged in a spaced mode, after steam enters the anti-deformation platen superheater, due to the fact that the anti-deformation platen superheater makes contact with the hearth of the boiler most recently, heat of the hearth of the boiler can be absorbed to the best degree, and the heat utilization rate of the boiler is improved. And heat is quickly absorbed, so that the phenomena that the flow rate of steam in the platen superheater tube is slowed down and the heat exchange tube in the platen superheater is subjected to overtemperature deformation due to the fact that the flow rate of the steam is reduced when the boiler is in low-load operation are improved, and the safe and stable operation efficiency of the boiler is improved.

Description

Technical Field

[0001] The utility model relates to the field of platen type superheater installation, in particular to an anti-deformation platen type superheater installation structure. Background Art

[0002] Due to the influence of peak load regulation, there is a big difference between daytime and nighttime loads. In order to increase the load span, the boiler is designed with a screen-type superheater to increase the main steam temperature. With this design, the boiler can maintain the main steam temperature even at low load.

[0003] In the case of frequent peak load regulation, when the boiler is running at low load, the steam flow rate is reduced, the steam flow rate in the platen superheater tube slows down, and the platen tubes near the center of the furnace absorb the most heat, but there is not enough steam to cool, which eventually leads to over-temperature deformation of the heat exchange tubes in the platen superheater. Once the platen superheater is over-temperature deformed and the deformation reaches a certain degree, it will cause flue gas corridors in the furnace. Because the deformation is random, the platen superheater will divide the furnace into wide and narrow spaces after deformation, but the amount of flue gas passing through these spaces is the same, so some spaces will have very low flue gas flow rates, and some spaces will have very high flue gas flow rates. The space with low flue gas will not have too many problems, but the heating surface of the space with high flue gas flow rate will be worn, and it is easy to burst the tube after a long wear time.

[0004] With respect to the above-mentioned prior art, the inventors found that the deformation of the existing screen superheater under low load becomes more and more serious, until a flue gas corridor is formed in the furnace, and wear and tear occur, resulting in pipe burst, which has a great harm to the safe and stable operation of the boiler and affects the operation cycle of the boiler. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides an anti-deformation screen-type superheater installation structure.

[0006] The anti-deformation platen superheater installation structure provided in the present application adopts the following technical solution:

[0007] A deformation-resistant platen superheater installation structure is disclosed. The deformation-resistant platen superheater is arranged at one side of a boiler and spaced apart from the boiler. At least a part of the deformation-resistant platen superheater is spaced apart from the furnace of the boiler.

[0008] Through the above-mentioned technical valve stem, the present application optimizes the installation position of the anti-deformation screen superheater, and sets at least a part of the anti-deformation screen superheater relative to the furnace of the boiler. When the steam enters the anti-deformation screen superheater, since the anti-deformation screen superheater is in closest contact with the furnace of the boiler, it can best absorb the heat of the boiler furnace part and quickly absorb heat, so that the cooling effect of this part is effectively improved, and the steam flow rate in the screen superheater tube is slowed down due to the reduction of steam flow when the boiler is running at low load, and the phenomenon of over-temperature deformation of the heat exchange tube in the screen superheater occurs, thereby improving the safe and stable operation efficiency of the boiler.

[0009] Furthermore, the anti-deformation platen superheater comprises:

[0010] A steam through-pipe, wherein the steam through-pipe is provided with a thread for transporting steam from one end of the steam through-pipe to the other end, and the steam through-pipe is provided with a plurality of steam through-holes penetrating along the thickness direction of the steam through-pipe;

[0011] A plurality of heat exchange tubes, both ends of each heat exchange tube are fixedly connected to the steam through hole so that steam can be transported from one end of the heat exchange tube to the other end.

[0012] Furthermore, the anti-deformation screen superheater includes two steam through pipes, one end of the two steam through pipes are fixedly connected so that the steam can be transported along one steam through pipe to the other steam through pipe, each steam through pipe is provided with a plurality of steam through holes penetrating along the thickness direction of the steam through pipe and corresponding to each other on one side, and a plurality of heat exchange tubes arranged at intervals are fixedly connected between the two steam through pipes.

[0013] Furthermore, the two steam pipes are used for inputting steam as a steam inlet pipe, and the two steam pipes are used for outputting steam as a steam outlet pipe. The other side of each of the steam inlet pipe and the steam outlet pipe is provided with a connecting hole that penetrates along the thickness direction thereof, and the two connecting holes are respectively arranged at the midpoints of the steam inlet pipe and the steam outlet pipe.

[0014] Through the above-mentioned technical valve stem, the present application optimizes the installation position between the heat exchange tube in the steam pipe and the boiler, and effectively sets the connecting holes at the steam inlet pipe and the steam outlet pipe in the furnace area. During the actual heat exchange process, the steam will preferentially reach the place where the heat exchange is completed. This structure can effectively ensure that there is enough steam to be released preferentially from the heat exchange tube in the furnace area, so as to achieve better cooling of the pipes in this area, thereby improving the peak load regulation capacity of the boiler, ensuring the safe and stable operation of the boiler, and generating economic benefits for the enterprise.

[0015] Furthermore, the aperture of the connecting hole is larger than the aperture of the heat exchange tube.

[0016] Furthermore, the connection holes on the steam inlet pipe and the steam outlet pipe are arranged at a relative interval to the furnace of the boiler.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. The present application optimizes the installation position of the anti-deformation platen superheater, and arranges at least a portion of the anti-deformation platen superheater relative to the furnace of the boiler. When steam enters the anti-deformation platen superheater, since the anti-deformation platen superheater is in closest contact with the furnace of the boiler, it can best absorb the heat of the furnace of the boiler and quickly absorb heat, thereby effectively improving the cooling effect of this part. This improves the problem that when the boiler is running at low load, the steam flow rate in the platen superheater tube is reduced, resulting in a slow steam flow rate, and the phenomenon of over-temperature deformation of the heat exchange tube in the platen superheater, thereby improving the safe and stable operation efficiency of the boiler.

[0019] 2. The present application optimizes the installation position between the heat exchange tubes in the steam passage and the boiler. By effectively arranging the connecting holes at the steam inlet and outlet pipes in the furnace area, the steam will preferentially reach the place where the heat exchange is completed during the actual heat exchange process. This structure can effectively ensure that there is enough steam to be preferentially released from the heat exchange tubes in the furnace area, so as to achieve better cooling of the pipes in this area, thereby improving the peak load regulation capacity of the boiler, ensuring the safe and stable operation of the boiler, and generating economic benefits for the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation of an anti-deformation screen-type superheater installation structure according to an embodiment of the present application;

[0021] Figure 2 It is a structural schematic diagram of the anti-deformation screen type superheater according to an embodiment of the present application.

[0022] Explanation of the reference numerals: 1. furnace; 2. anti-deformation plate superheater; 21. steam through pipe; 211. steam inlet pipe; 212. steam outlet pipe; 22. heat exchange tube; 23. connecting hole; 24. steam through hole. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 This application is described in further detail.

[0024] like Figure 1A structure for mounting an anti-deformation platen superheater 2 includes a boiler and an anti-deformation platen superheater 2 installed at intervals from a furnace 1 in the boiler. The anti-deformation platen superheater 2 includes two steam through pipes 21, one of the two steam through pipes 21 is used to connect the steam inlet and allow the steam to enter the steam through pipe 21, and the other is connected to the steam outlet so that the steam is output from the steam through pipe 21. One end of the two steam through pipes 21 is connected to each other and is sequentially arranged as a steam inlet pipe 211 and a steam outlet pipe 212. On the outer circumference of the steam inlet pipe 211 and the steam outlet pipe 212, a plurality of steam through holes 24 are arranged at equal intervals and penetrate along the thickness direction of the pipe wall. The steam through holes 24 on the steam inlet pipe 211 and the steam outlet pipe 212 are of the same size and are connected to a plurality of heat exchange pipes 22 in a one-to-one correspondence. The steam is transported from the steam inlet pipe 211 to the steam outlet pipe 212, thereby effectively absorbing heat.

[0025] It should be noted that, in the present application, a connecting hole 23 is provided on the side of the steam inlet pipe 211 away from the steam through hole 24 for connecting with the steam input device, and a connecting hole 23 is also provided on the side of the steam outlet pipe 212 away from the steam through hole 24 for connecting with the steam output device. The connecting holes 23 on the steam inlet pipe 211 and the steam outlet pipe 212 are both arranged at the midpoint of the length direction of the steam inlet pipe 211 and the steam outlet pipe 212. At the same time, the area where the two connecting holes 23 are arranged is an area close to the furnace 1 on the boiler. The area where the steam is installed can preferentially reach the place where the heat exchange is completed during the actual heat exchange process. The structure can effectively ensure that there is enough steam to be preferentially released from the heat exchange pipe 22 in the furnace 1 area, so as to achieve better cooling of the pipes in the area, thereby improving the peak-shaving capacity of the boiler load, ensuring the safe and stable operation of the boiler, and generating economic benefits for the enterprise.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A deformation-resistant platen superheater (2) mounting structure, characterized in that: The anti-deformation platen superheater (2) is arranged on one side of the boiler and is spaced apart from the boiler. At least a part of the anti-deformation platen superheater (2) is spaced apart from the furnace (1) of the boiler.

2. The anti-deformation platen superheater (2) installation structure according to claim 1, characterized in that: The anti-deformation platen superheater (2) comprises: A steam passage (21), the steam passage (21) being provided with a passage for transporting steam from one end of the steam passage (21) to the other end, the steam passage (21) being provided with a plurality of steam through holes (24) penetrating along a thickness direction of the steam passage (21); A plurality of heat exchange tubes (22), both ends of each heat exchange tube (22) being fixedly connected to the steam through hole (24) so ​​that steam is transported from one end of the heat exchange tube (22) to the other end.

3. The anti-deformation platen superheater (2) installation structure according to claim 1, characterized in that: The anti-deformation platen superheater (2) comprises two steam passages (21), one end of the two steam passages (21) being fixedly connected so that the steam can be transported along one steam passage (21) to the other steam passage (21), one side of each steam passage (21) is provided with a plurality of steam through holes (24) penetrating along the thickness direction of the steam passage (21) and corresponding to each other, and a plurality of heat exchange tubes (22) arranged at intervals are fixedly connected between the two steam passages (21).

4. The anti-deformation platen superheater (2) installation structure according to claim 3, characterized in that: The steam inlet pipe (211) is used for inputting steam of the two steam passage pipes (21), and the steam outlet pipe (212) is used for outputting steam of the two steam passage pipes (21). The other side of each of the steam inlet pipe (211) and the steam outlet pipe (212) is provided with a connecting hole (23) penetrating along the thickness direction thereof. The two connecting holes (23) are respectively arranged at the midpoint of the steam inlet pipe (211) and the steam outlet pipe (212).

5. The anti-deformation platen superheater (2) installation structure according to claim 4, characterized in that: The hole diameter of the connecting hole (23) is larger than the hole diameter of the heat exchange tube (22).

6. The anti-deformation platen superheater (2) installation structure according to claim 4, characterized in that: The connection holes on the steam inlet pipe (211) and the steam outlet pipe (212) are arranged at a relative spacing from the furnace (1) of the boiler.

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