Boiler water cooling wall

Abstract

The utility model discloses a boiler water cooling wall which comprises a plurality of vertically-arranged water cooling pipes and fins connected between the adjacent water cooling pipes, a plurality of limiting columns are arranged on the front faces and the back faces of the corresponding water cooling pipes respectively, limiting plates are arranged on the two sides of the ends of the corresponding limiting columns respectively, and protective tiles are arranged on the outer sides of the water cooling pipes. Through holes used for penetrating through the limiting columns and the limiting plates are formed in the upper portions of the protective tiles, and tensioning assemblies used for enabling the water cooling pipes to be tightly attached to the protective tiles are arranged between the limiting plates and the protective tiles. By adopting the limiting columns, the limiting plates and the tensioning assemblies, the protective tiles are convenient to mount and dismount, the maintenance cost and time are reduced, the protective tiles are specially designed and made of materials, protection is enhanced, the protective tiles are durable, the protective tiles are connected more tightly through matching of the connecting plates, the protective performance of the boiler water cooling wall is integrally improved, stable operation of a boiler is guaranteed, and the service life of the boiler is prolonged. And the influence of water leakage caused by corrosion on production is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of boiler water cooling wall, specifically relates to a boiler water cooling wall. BACKGROUND

[0002] In the operation process of the boiler, when adopting SNCR denitration technology, the urea reaction is often insufficient under low load operation condition, which can cause the insufficiently reacted substances to corrode the water cooling wall, and the water leakage problem occurs repeatedly, seriously affecting the normal production.

[0003] In order to solve the above problems, the method commonly used in the prior art is to increase the protective tile outside the water cooling wall, and the connection relationship between the protective tile and the water cooling wall is usually welded, but after long time use, due to various complex working conditions and environmental factors, aging phenomenon may occur, when the protective tile needs to be replaced, the welding connection mode is very difficult to disassemble, so the maintenance cost and time are directly increased, and even the normal operation of the boiler may be affected. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems, the utility model provides a boiler water cooling wall.

[0005] The utility model is realized through the following technical schemes:

[0006] A boiler water cooling wall comprises a plurality of vertically arranged water cooling pipes and fins connected between adjacent water cooling pipes, a plurality of limiting columns are arranged on the front and back surfaces of the water cooling pipes respectively, limiting plates are arranged on both sides of the end of the limiting column respectively, protective tiles are arranged outside the water cooling pipes, through holes for penetrating the limiting column and the limiting plate are formed in the upper part of the protective tile, and a tensioning assembly for tightly fitting the water cooling pipe and the protective tile is arranged between the limiting plate and the protective tile.

[0007] Further, the tensioning assembly comprises a fastening plate provided with through holes with the same cross-sectional shape as the limiting column and the limiting plate, the fastening plate is provided with insertion holes on both sides, a jack rod is slidably connected in the insertion hole, the jack rod extends to both sides of the fastening plate at both ends, a stop block is arranged at the end of the jack rod, a compression spring is sleeved outside the jack rod, one end of the compression spring is connected and fixed with the bottom of the stop block, and the other end is connected and fixed with the side of the fastening plate.

[0008] Further, the protective tile is provided with a connecting plate on both sides, and a boss and a groove are arranged on the bottom of the connecting plate respectively.

[0009] Further, the end face of the connecting plate is tightly fitted with the side wall of the adjacent protective tile.

[0010] Further, the boss and the groove on the connecting plate of the side of the adjacent protective tile are matched with each other.

[0011] Further, a gap is arranged between the protective tile and the limiting plate, and the gap has the same thickness as the fastening plate.

[0012] Further, the protective tile is made of stainless steel.

[0013] Further, the fastening plate can rotate around the limiting column.

[0014] Compared with the prior art, the protective tile is convenient to install and disassemble, the maintenance cost and time are reduced, the protective tile is enhanced and durable due to the special design and material selection, the protective tile is connected more closely due to the cooperation of the connecting plate, the protection performance of the boiler water wall is improved as a whole, the stable operation of the boiler is ensured, and the influence of corrosion and water leakage on production is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 is Figure 1 A part of the enlarged intention in the middle;

[0017] Figure 3 is Figure 1 B part of the enlarged intention in the middle;

[0018] Figure 4 is the enlarged schematic diagram of the tensioning assembly;

[0019] Figure 5 is Figure 4 partial cross-sectional schematic diagram

[0020] In the drawing: water cooling pipe 1, fin 2, limiting column 3, limiting plate 4, protective tile 5, through hole 6, through hole 7, fastening plate 8, insertion hole 9, top rod 10, stop block 11, compression spring 12, connecting plate 13, boss 14, recess 15. DETAILED DESCRIPTION

[0021] The utility model will be described in further detail below in combination with the drawings and specific embodiments:

[0022] As Figure 1 , 2 , 3 shows, a kind of boiler water wall, including several vertically arranged water cooling pipe 1 and the fin 2 between adjacent water cooling pipe 1 connection, corresponding to the front and back of water cooling pipe 1 respectively is provided with several limiting columns 3, corresponding to the end of limiting column 3 both sides is provided with limiting plate 4, water cooling pipe 1 outside is provided with protective tile 5, protective tile 5 upper portion is equipped with the through hole 6 for crossing limiting column 3 and limiting plate 4, limiting plate 4 and protective tile 5 between is provided with the tensioning assembly for making water cooling pipe 1 and protective tile 5 closely.

[0023] As Figure 2 , 4 , 5 shown, the tension assembly includes fastening plate 8 with the same cross-sectional shape of the limiting column 3 and limiting plate 4 through hole 7, fastening plate 8, fastening plate 8 both sides are provided with insertion hole 9, the insertion hole 9 is connected with the top rod 10 sliding, the top rod 10 both ends respectively to the fastening plate 8 both sides extend, the top rod 10 end is provided with a stop block 11, the top rod 10 outside sleeve is connected with the compression spring 12, the compression spring 12 one end and the stop block 11 bottom connection fixed and the other end and the fastening plate 8 side connection fixed.

[0024] As Figure 3 shown, the tile 5 both sides are provided with connecting plate 13, corresponding connecting plate 13 bottom is provided with boss 14 and groove 15 respectively.

[0025] As Figure 3 shown, the connecting plate 13 end face and the adjacent tile 5 side wall closely.

[0026] As Figure 3 shown, the boss 14 and groove 15 on the connecting plate 13 of the adjacent tile 5 side part are matched with each other.

[0027] As Figure 2 shown, the gap is provided between the tile 5 and the limiting plate 4, and the gap is the same as the thickness of the fastening plate 8.

[0028] As Figure 1 shown, the tile 5 is made of 304 stainless steel.

[0029] As Figure 1 , 2 shown, the fastening plate 8 can rotate around the limiting column 3.

[0030] The implementation principle of the boiler water wall of the embodiment of the application is:

[0031] When installing the tile 5 outside the water cooling pipe 1, the inner side of the tile 5 is closely attached to the side wall of the water cooling pipe 1, and the through hole 6 will pass through the corresponding limiting column 3 and limiting plate 4 when closely attached, so that the limiting column 3 and the limiting plate 4 are on the outside of the tile 5;

[0032] At this time, the fastening plate 8 is passed through the limiting column 3 and the limiting plate 4, and is placed in the gap between the protecting tile 5 and the limiting plate 4, then the fastening plate 8 is rotated 90° with the limiting column 3 as the center, so that the through hole 7 on the fastening plate 8 is perpendicular to the limiting plate 4, after being perpendicular, the fastening plate 8 tightly presses the protecting tile 5 to the water cooling pipe 1, at the same time, the fastening plate 8 is tightly attached to the protecting tile 5, after being tightly attached, the top rod 10 is pushed outwards, the compression spring 12 is elongated to generate a rebound force, the rebound force pushes the protecting tile 5 to the water cooling pipe 1, so that the protecting tile 5 is compressed to prevent the gap between the protecting tile 5 and the water cooling pipe 1, prevent affecting the thermal efficiency of the boiler, so as to complete the installation of the protecting tile 5, the whole process accelerates the connecting speed of the protecting tile 5 and the water cooling pipe 1, accelerates the production efficiency, reduces unnecessary manpower, and improves the work efficiency.

[0033] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A boiler water wall comprising a plurality of vertically arranged water cooled tubes (1) and fins (2) connecting adjacent water cooled tubes (1), characterised in that: A plurality of limiting columns (3) are arranged on the front and back surfaces of the water-cooled pipe (1) respectively, limiting plates (4) are arranged on both sides of the end of the limiting column (3) respectively, a protective tile (5) with the same cross section as the water-cooled pipe (1) is arranged on the outer side of the water-cooled pipe (1), a through hole (6) for passing through the limiting column (3) and the limiting plate (4) is arranged on the upper part of the protective tile (5), and a tensioning assembly for tightly connecting the water-cooled pipe (1) and the protective tile (5) is arranged between the limiting plate (4) and the protective tile (5).

2. A boiler water wall according to claim 1, characterised in that: The tensioning assembly comprises a fastening plate (8) with a through hole (7) with the same cross section shape as the limiting column (3) and the limiting plate (4), the fastening plate (8), an insertion hole (9) is arranged on both sides of the fastening plate (8) respectively, a top rod (10) is slidably connected in the insertion hole (9), the top rod (10) extends to both sides of the fastening plate (8) at both ends respectively, a stop block (11) is arranged at the end of the top rod (10), a compression spring (12) is sleeved on the outer side of the top rod (10), one end of the compression spring (12) is connected and fixed with the bottom of the stop block (11) and the other end is connected and fixed with the side of the fastening plate (8).

3. A boiler water wall according to claim 2, characterised in that: The connecting plates (13) are arranged on both sides of the protective tile (5) respectively, and bosses (14) and recesses (15) are arranged on the bottom of the connecting plates (13) respectively.

4. A boiler water wall according to claim 3, characterised in that: The end surface of the connecting plate (13) is tightly connected with the side wall of the adjacent protective tile (5).

5. A boiler water wall according to claim 4, characterised in that: The bosses (14) and the recesses (15) on the connecting plates (13) on the side of the adjacent protective tile (5) are matched with each other.

6. A boiler water wall according to claim 5, characterised in that: A gap is arranged between the protective tile (5) and the limiting plate (4), and the gap has the same thickness as the fastening plate (8).

7. A boiler water wall according to claim 6, characterised in that: The protective tile (5) is made of 304 stainless steel.

8. A boiler water wall according to claim 2, characterized in that: The fastening plate (8) can rotate around the limiting column (3).

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