Structure for solving unsmooth drainage in boiler steam soot blowing

Abstract

The structure solves the problem of unsmooth drainage in boiler steam soot blowing. At present, the process is not good when pipelines are overhauled and replaced, so that the inclination angle of a branch pipeline is damaged, the phenomena of unsmooth drainage of a soot blowing system and water carrying of soot blowing steam are caused, the steam carrying water in the soot blowing system causes serious harm to boiler equipment, the blowing damage risk of a heating surface is increased, the aging of pipes is aggravated, and the energy consumption of the system is increased. The soot blowing device comprises a soot blowing steam pipe (2), the soot blowing steam pipe is divided into three paths, and the first path of soot blowing steam branch pipe (1) is wired on the left wall of the boiler from top to bottom and penetrates through a plurality of rows of soot blowers on the left side; the second soot blowing steam branch pipe (3) is converged into the soot blowing steam pipeline of the air pre-heater from the rear wall of the boiler; the third soot blowing steam branch pipe (4) is wired on the right wall of the boiler from top to bottom and penetrates through the multiple rows of soot blowers on the right side. The steam soot blower is used for solving the problem of unsmooth drainage in boiler steam soot blowing.

Description

Technical Field

[0001] The utility model relates to a structure for solving the problem of poor drainage in boiler steam soot blowing. Background Art

[0002] At present, boiler sootblowing adopts steam sootblowing, and the boiler sootblowing system is arranged in a branch arrangement. The drainage is controlled by 4 drain gates. The switch signal of the drain gate comes from the temperature sensor behind the gate. The sensor temperature setting value is 250℃. At the beginning of the design of the sootblowing system, each branch pipe was kept at an inclination angle of 1 / 1000 with the horizontal plane, and the heating pipes of the branch pipes were completed only by the retention of condensed water. With the long-term operation of our company's boilers, problems such as uneven expansion and deformation of the sootblowing pipe support frame have emerged. In addition, the poor process during the inspection and replacement of the pipes has caused the inclination angle of the branch pipe to be destroyed, resulting in poor drainage of the sootblowing system and water in the sootblowing steam. The steam carrying water in the sootblowing system has caused serious damage to the boiler equipment, increased the risk of blowing damage to the heating surface, aggravated the aging of the pipes, and increased system energy consumption. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned problems and to provide a structure for solving the problem of poor drainage in boiler steam soot blowing.

[0004] The above objectives are achieved through the following solutions:

[0005] A structure for solving the problem of poor drainage in boiler steam sootblowing, comprising a sootblowing steam pipe, wherein the sootblowing steam pipe is divided into three paths, wherein the first sootblowing steam branch pipe is arranged from top to bottom on the left wall of the boiler and passes through multiple rows of sootblowers on the left side;

[0006] The second soot-blowing steam branch pipe is connected to the air preheater soot-blowing steam pipe from the rear wall of the boiler;

[0007] The third sootblowing steam branch pipe runs from top to bottom on the right wall of the boiler, passing through multiple rows of sootblowers on the right side.

[0008] The structure for solving the problem of poor drainage in boiler steam sootblowing is as follows: a sootblowing steam branch pipe on the left side enters from the first row of head sootblowers on the left side, is led out from the first row of tail sootblowers to enter the second row of tail sootblowers, is led out from the second row of head sootblowers to enter the third row of head sootblowers, is led out from the third row of tail sootblowers to enter the fourth row of tail sootblowers, is led out from the fourth row of head sootblowers and enters the sixth row of head sootblowers after passing through the fifth row of sootblowers, is led out from the sixth row of tail sootblowers to enter the seventh row of tail sootblowers, is led out from the seventh row of head sootblowers to enter the first row of tail sootblowers on the left side of the furnace blowing, is led out from the first row of head sootblowers of the furnace blowing to enter the second row of head sootblowers of the furnace blowing, is led out from the second row of tail sootblowers of the furnace blowing to enter the third row of tail sootblowers of the furnace blowing, is led out from the third row of head sootblowers of the furnace blowing to enter the fourth row of head sootblowers of the furnace blowing, and is connected to the drainage pipe and valve from the fourth row of tail sootblowers of the furnace blowing.

[0009] The structure for solving the problem of poor drainage in boiler steam sootblowing is as follows: a sootblowing steam branch pipe on the right side enters from the first row of head sootblowers on the right side, is led out from the first row of tail sootblowers to enter the second row of tail sootblowers, is led out from the second row of head sootblowers to enter the third row of head sootblowers, is led out from the third row of tail sootblowers to enter the fourth row of tail sootblowers, is led out from the fourth row of head sootblowers and enters the sixth row of head sootblowers after passing through the fifth row of sootblowers, is led out from the sixth row of tail sootblowers to enter the seventh row of tail sootblowers, is led out from the seventh row of head sootblowers to enter the first row of tail sootblowers on the right side of the furnace blowing, is led out from the first row of head sootblowers of the furnace blowing to enter the second row of head sootblowers of the furnace blowing, is led out from the second row of tail sootblowers of the furnace blowing to enter the third row of tail sootblowers of the furnace blowing, is led out from the third row of head sootblowers of the furnace blowing to enter the fourth row of head sootblowers of the furnace blowing, and is connected to the drainage pipe and valve from the fourth row of tail sootblowers of the furnace blowing. Beneficial Effects

[0010] 1. The utility model boiler sootblowing steam pipeline is generally divided into three routes, one on the left and right sides of the boiler, one on the rear wall remains unchanged, and the system drain pipeline is changed from 5 routes to 3 routes. Then the branches of each layer of sootblower are connected end to end and connected in series for overall drainage.

[0011] 2. After passing through the pressure reducer, the sootblowing steam of the utility model boiler follows three main lines from top to bottom, passes through each branch pipe in turn, and performs all-round warm pipe drainage without leaving any dead angle. The drainage finally flows into the water collecting tank after passing through three groups of drain gates. The steam remaining in the sootblowing system is qualified saturated steam, which can completely solve the problem of sootblowing steam carrying water. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is the principle diagram of the utility model;

[0013] In the figure: 1. The first sootblowing steam branch pipe; 2. The sootblowing steam pipe; 3. The second sootblowing steam branch pipe; 4. The third sootblowing steam branch pipe. DETAILED DESCRIPTION

[0014] A structure for solving the problem of poor drainage in boiler steam sootblowing, comprising a sootblowing steam pipe 2, wherein the sootblowing steam pipe is divided into three paths, wherein the first sootblowing steam branch pipe 1 is routed from top to bottom on the left wall of the boiler and passes through multiple rows of sootblowers on the left side;

[0015] The second soot-blowing steam branch pipe 3 is connected to the air preheater soot-blowing steam pipeline from the rear wall of the boiler;

[0016] The third sootblowing steam branch pipe 4 is routed from top to bottom on the right wall of the boiler and passes through multiple rows of sootblowers on the right side.

[0017] The left sootblowing steam branch pipe enters from the first row of the left front sootblower 313, leads out from the first row of the rear sootblower 325 to the second row of the rear sootblower 327, leads out from the second row of the front sootblower 311 to the third row of the front sootblower 333, leads out from the third row of the rear sootblower 309 to the fourth row of the rear sootblower 303, leads out from the fourth row of the front sootblower 341, passes through the fifth row of the sootblower 301, enters the sixth row of the front sootblower 349, leads out from the sixth row of the rear sootblower 355 to the seventh row of the rear sootblower 363, The steam is led out from the seventh row of first soot blowers 357 and enters the first row of tail soot blowers 274 on the left side of the furnace, and is led out from the first row of first soot blowers 296 and enters the second row of first soot blowers 272, and is led out from the second row of tail soot blowers 250 and enters the third row of tail soot blowers 226, and is led out from the third row of first soot blowers 248 and enters the fourth row of first soot blowers 224, and is led out from the fourth row of tail soot blowers 202 to the drain pipe and valve, so as to connect the steam pipes between the second row of soot blowers 236 and 238 on the left side of the furnace.

[0018] The right sootblowing steam branch pipe enters from the first row of head sootblowers 314 on the right side, is led out from the first row of tail sootblowers 326 to enter the second row of tail sootblowers 328, is led out from the second row of head sootblowers 312 to enter the third row of head sootblowers 334, is led out from the third row of tail sootblowers 310 to enter the fourth row of tail sootblowers 304, is led out from the fourth row of head sootblowers 342 to pass through the fifth row of sootblowers 302 and enter the sixth row of head sootblowers 350, is led out from the sixth row of tail sootblowers 356 to enter the seventh row of tail sootblowers 364, The steam is led out from the first soot blower 358 of the seventh row and enters the first row of tail soot blowers 295 on the right side of the furnace, led out from the first row of first soot blowers 273 of the first row of furnace blowing and enters the first row of first soot blowers 249 of the second row of furnace blowing, led out from the second row of tail soot blowers 271 of the furnace blowing and enters the third row of tail soot blowers 247 of the furnace blowing, led out from the first row of third row of furnace blowing soot blowers 225 and enters the first row of fourth row of furnace blowing soot blowers 201, led out from the fourth row of tail soot blowers 223 of the furnace blowing and connected to the drain pipe and valve, and the steam pipe between the second row of soot blowers 235 and 237 of the right side of the furnace blowing is connected.

[0019] The sootblowing steam passes through each pipe from top to bottom in turn, draining in all directions without dead ends, which can completely solve the problem of water in the sootblowing steam.

Claims

1. A structure for solving the problem of poor drainage in boiler steam soot blowing, characterized by: The sootblowing steam pipe is composed of three branches. The first branch of the sootblowing steam pipe is routed from top to bottom on the left wall of the boiler and passes through multiple rows of sootblowers on the left side. The second soot-blowing steam branch pipe is connected to the air preheater soot-blowing steam pipe from the rear wall of the boiler; The third sootblowing steam branch pipe runs from top to bottom on the right wall of the boiler, passing through multiple rows of sootblowers on the right side.

2. The structure for solving the problem of poor drainage in boiler steam soot blowing according to claim 1 is characterized by: The sootblowing steam branch pipe on the left side enters from the first row of head sootblowers on the left side, leads out from the first row of tail sootblowers to the second row of tail sootblowers, leads out from the second row of head sootblowers to the third row of head sootblowers, leads out from the third row of tail sootblowers to the fourth row of tail sootblowers, leads out from the fourth row of head sootblowers and enters the sixth row of head sootblowers after passing through the fifth row of sootblowers, leads out from the sixth row of tail sootblowers to the seventh row of tail sootblowers, leads out from the seventh row of head sootblowers to the first row of tail sootblowers on the left side of the furnace, leads out from the first row of head sootblowers of the furnace to the second row of head sootblowers of the furnace, leads out from the second row of tail sootblowers of the furnace to the third row of tail sootblowers of the furnace, leads out from the third row of head sootblowers of the furnace to the fourth row of head sootblowers of the furnace, leads out from the fourth row of tail sootblowers of the furnace to the drain pipe and valve.

3. The structure for solving the problem of poor drainage in boiler steam soot blowing according to claim 2 is characterized by: The right side sootblowing steam branch pipe enters from the first row of head sootblowers on the right side, leads out from the first row of tail sootblowers to the second row of tail sootblowers, leads out from the second row of head sootblowers to the third row of head sootblowers, leads out from the third row of tail sootblowers to the fourth row of tail sootblowers, leads out from the fourth row of head sootblowers and enters the sixth row of head sootblowers after passing through the fifth row of sootblowers, leads out from the sixth row of tail sootblowers to the seventh row of tail sootblowers, leads out from the seventh row of head sootblowers to the first row of tail sootblowers on the right side of the furnace, leads out from the first row of head sootblowers of the furnace to the second row of head sootblowers of the furnace, leads out from the second row of tail sootblowers of the furnace to the third row of tail sootblowers of the furnace, leads out from the third row of head sootblowers of the furnace to the fourth row of head sootblowers of the furnace, leads out from the fourth row of tail sootblowers of the furnace to the drain pipe and valve.

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