Converter waste heat boiler with flue gas guiding device

Abstract

The utility model discloses a converter waste heat boiler with a smoke guiding device, which comprises a converter water cooling wall, a boiler pipe is arranged on the converter water cooling wall, a water jacket is arranged on one side of the converter water cooling wall, a smoke channel is arranged in the water jacket, and the converter water cooling wall is connected with the water jacket through a connecting part. A flow guide part is arranged on the inner wall of the flue gas channel, the flow guide part is provided with a slope surface, and the slope surface is used for guiding high-temperature flue gas discharged to the water cooling wall of the converter from the flue gas channel so as to prevent the high-temperature flue gas from directly washing a boiler pipe on the water cooling wall of the converter; the water jacket is simple in structure and convenient to use, high-temperature flue gas in the flue gas channel can be guided by installing the flow guide part on the water jacket, direct scouring of the high-temperature flue gas to the boiler pipe is effectively avoided, and the service life of the boiler pipe is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to converter waste heat boiler installation construction application technical field, specifically a kind of converter waste heat boiler with flue gas flow guide device. BACKGROUND

[0002] In the process of primary converter process transformation, converter process is upgraded as a whole, and the flue system such as water jacket is redesigned and updated. The size of the outlet of the newly designed converter water jacket is changed. The rear end of the water jacket is a waste heat boiler. The waste heat boiler is old and the cross-sectional size is unchanged, resulting in inconsistent cross-sectional size between the converter water jacket and the boiler flue. The cross-sectional size of the water jacket is 4000*5050, the cross-sectional size of the boiler is 3700*5564.5, and the cross-sectional size of the waste heat boiler is relatively longer in the height direction and relatively narrower in the width direction. The first boiler tube on the left and right sides is directly exposed to the high-temperature flue gas of the converter, which poses a great safety hazard. The direct scouring of the high-temperature flue gas on the boiler tube can cause rapid corrosion and damage to the boiler tube, greatly reducing the service life of the boiler tube.

[0003] Moreover, the heat insulation cotton used for sealing in the connecting portion is easily affected by high-temperature flue gas, has a very short service life, and needs to be frequently replaced.

[0004] To solve the above problems, a converter waste heat boiler with flue gas flow guide device is proposed. SUMMARY

[0005] The utility model aims to solve the above problems and provides a converter waste heat boiler with flue gas flow guide device.

[0006] The specific scheme of the utility model is as follows: a converter waste heat boiler with flue gas flow guide device, comprising: a converter water-cooled wall, a boiler tube is provided on the converter water-cooled wall, a water jacket is provided on one side of the converter water-cooled wall, a flue gas passage is provided in the water jacket, and the converter water-cooled wall and the water jacket are connected through a connecting portion; a flow guide portion is provided on the inner wall of the flue gas passage, the flow guide portion has an inclined surface, and the inclined surface is used to guide the flue gas passage to the high-temperature flue gas of the converter water-cooled wall to prevent the high-temperature flue gas from directly scouring the boiler tube on the converter water-cooled wall.

[0007] Further, the flow guide portion comprises:

[0008] a mold cavity, the mold cavity is a long hollow chamber with a right-angled triangular cross-section, an inclined surface is provided on the side of the mold cavity facing the flue gas passage, and the inclined surface is used to guide the high-temperature flue gas; the mold cavity is welded and fixed to the inner wall of the water jacket, an anchor rod is fixedly connected in the mold cavity, and high-temperature resistant castable is filled in the mold cavity.

[0009] Further, the castable is high-aluminum castable.

[0010] Further, the connecting part comprises:

[0011] a first flange, which is welded and fixed with the converter water-cooled wall through a vertical plate;

[0012] a second flange, which is welded and fixed with the water jacket;

[0013] a first partition plate, which is arranged between the first flange and the second flange, is arranged at the lower part of the first flange and the second flange, and one end of the first partition plate is welded and fixed with the first flange, and an adjusting groove is arranged between the other end of the first partition plate and the second flange;

[0014] a sealing plate, which is arranged at the outer end of the first flange and the second flange;

[0015] a filling cavity, which is surrounded by the first flange, the second flange, the first partition plate and the sealing plate;

[0016] heat insulation cotton, which is arranged in the filling cavity.

[0017] Further, a steel wire mesh is arranged between the heat insulation cotton and the filling cavity.

[0018] Further, a second partition plate is arranged below the first partition plate, the second partition plate is welded and fixed with the second flange, and an air slot is arranged between the second partition plate and the first flange.

[0019] Further, a stainless steel protective layer is arranged on the boiler pipe closest to the flue gas passage, the stainless steel protective layer is in an arc-shaped plate structure, the stainless steel protective layer is arranged on the side facing the flue gas passage, and is used for preventing the boiler pipe from being directly washed by the high-temperature flue gas.

[0020] Further, the stainless steel protective layer and the boiler pipe are welded and fixed through intermittent welding.

[0021] The utility model discloses the following beneficial effects: 1, the utility model discloses simple structure, convenient to use, through the additional flow guide portion on the water jacket inner wall, utilize flow guide portion team high-temperature flue gas and carry out flow guide, effectively prevent the high-temperature flue gas in the flue gas passage to the boiler pipe direct wash, greatly improve the life of boiler pipe, 2, the double -deck partition is arranged below the heat insulation cotton, and the first partition plate and the second partition plate separate the high-temperature flue gas, and the first partition plate and the second partition plate form S -type heat conduction passage with the adjusting groove and the air slot, greatly consume the heat of high-temperature flue gas, increase the service life of heat insulation cotton, 3, the stainless steel protective layer is arranged on the boiler pipe of the outermost side of the converter water-cooled wall, carries out secondary protection to the boiler pipe, and further improves the service life of boiler pipe. ACCURATE DRAWINGS

[0022] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0023] Figure 2 is a structural schematic view of a flow guide part;

[0024] Figure 3 is a partial enlarged view of A in Figure 1

[0025] In the figure: 1, water-cooled wall of converter; 101, boiler pipe; 102, vertical plate; 103, stainless steel protective layer; 2, water jacket; 3, flue gas passage; 4, connecting part; 401, flange one; 402, flange two; 403, steel wire mesh; 404, heat insulation cotton; 405, sealing plate; 406, partition one; 407, partition two; 408, empty groove; 409, adjusting groove; 5, flow guide part; 501, mold cavity; 502, anchor rod; 503, castable. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B simultaneously satisfying the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0029] Please refer to Figures 1-3 ​The application discloses a converter waste heat boiler with a flue gas guide device, which comprises a converter water cooling wall 1, a boiler pipe 101 arranged on the converter water cooling wall 1, a water jacket 2 arranged on one side of the converter water cooling wall 1, a flue gas passage 3 arranged in the water jacket 2, and a connecting part 4 arranged between the converter water cooling wall 1 and the water jacket 2.

[0030] In the embodiment, the guide part 5 comprises:

[0031] A mold cavity 501 is a hollow chamber with a long strip shape and a right-angled triangular cross section, a slope surface is arranged on the side of the mold cavity 501 facing the flue gas passage 3, and the slope surface is used for guiding high-temperature flue gas; the mold cavity 501 is welded and fixed to the inner wall of the water jacket 2, an anchor rod 502 is arranged in the mold cavity 501 and fixedly connected to the mold cavity 501, and high-temperature-resistant castable 503 is filled in the mold cavity 501.

[0032] In the embodiment, the castable 503 is high-aluminum castable 503.

[0033] In the embodiment, the connecting part 4 comprises:

[0034] A flange one 401 is welded and fixed to the converter water cooling wall 1 through a vertical plate 102;

[0035] A flange two 402 is welded and fixed to the water jacket 2;

[0036] A partition plate one 406 is arranged between the flange one 401 and the flange two 402, the partition plate one 406 is arranged at the lower part of the flange one 401 and the flange two 402, one end of the partition plate one 406 is welded and fixed to the flange one 401, and an adjusting groove 409 is arranged between the other end of the partition plate one 406 and the flange two 402;

[0037] A sealing plate 405 is arranged at the outer end of the flange one 401 and the flange two 402;

[0038] A filling cavity is formed by the flange one 401, the flange two 402, the partition plate one 406 and the sealing plate 405;

[0039] Thermal insulation cotton is arranged in the filling cavity.

[0040] In the embodiment, a steel wire mesh 403 is arranged between the thermal insulation cotton and the filling cavity.

[0041] The second partition plate 407 is arranged below the first partition plate 406, and the second partition plate 407 is welded and fixed with the flange 402.

[0042] In the embodiment, the stainless steel protective layer 103 is arranged on the boiler pipe 101 closest to the flue gas passage 3, the stainless steel protective layer 103 is an arc-shaped plate structure, and the stainless steel protective layer 103 is arranged on one side facing the flue gas passage 3 and is used for preventing the boiler pipe 101 from being directly washed by high-temperature flue gas.

[0043] In the embodiment, the stainless steel protective layer 103 and the boiler pipe 101 are fixed by intermittent welding.

[0044] The utility model discloses have the following beneficial effects: 1, the utility model discloses simple structure, convenient to use, through the flow guide portion 5 of adding in the water jacket 2 inner wall, utilize the flow guide portion 5 team high -temperature flue gas and carry out the flow guide, effectively prevent the high -temperature flue gas in the flue gas passage 3 to the boiler pipe 101 direct wash, greatly improved the life of boiler pipe 101, 2, the double -deck partition plate is equipped below the heat -insulating cotton 404, and the first partition plate 406 and the second partition plate 407 separate the high -temperature flue gas, and the first partition plate 406 and the second partition plate 407 form S -type heat conduction passage with the adjusting groove 409 and the air slot 408, greatly consumed the heat of high -temperature flue gas, increased the service life of heat -insulating cotton, 3, the stainless steel protective layer 103 is arranged on the outermost boiler pipe 101 of converter water -cooled wall 1, and the stainless steel protective layer 103 carries out secondary protection to the boiler pipe 101, and further improves the service life of boiler pipe 101.

Claims

1. A converter waste heat boiler with flue gas flow guiding means, comprising: The utility model provides a converter water -cooled wall, which is provided with a boiler pipe, one side of the converter water -cooled wall is provided with a water jacket, the water jacket is provided with a flue gas channel, and the converter water -cooled wall and the water jacket are connected through a connecting part, characterized in that: a guide part is arranged on the inner wall of the flue gas channel, the guide part has an inclined surface, and the inclined surface is used for guiding the high-temperature flue gas of the flue gas channel to the converter water -cooled wall to prevent the high-temperature flue gas from directly washing the boiler pipe on the converter water -cooled wall.

2. A converter waste heat boiler with flue gas flow guiding device according to claim 1, characterized in that The guide part comprises: A mold cavity is a long hollow chamber with a right-angled triangular cross section, an inclined surface is arranged on the side of the mold cavity facing the flue gas channel, the inclined surface is used for guiding the high-temperature flue gas, the mold cavity is welded and fixed to the inner wall of the water jacket, an anchor rod is fixedly connected in the mold cavity, and high-temperature resistant castable is filled in the mold cavity.

3. A converter waste heat boiler with flue gas flow guiding device according to claim 2, characterized in that The castable is high-aluminum castable.

4. A converter waste heat boiler with flue gas flow guiding device according to claim 1, characterized in that The connecting part comprises: A first flange is welded and fixed to the converter water -cooled wall through a vertical plate; A second flange is welded and fixed to the water jacket; A first partition plate is arranged between the first flange and the second flange, the first partition plate is arranged at the lower part of the first flange and the second flange, one end of the first partition plate is welded and fixed to the first flange, and an adjusting groove is arranged between the other end of the first partition plate and the second flange; A sealing plate is arranged at the outer end of the first flange and the second flange; A filling cavity is formed by the first flange, the second flange, the first partition plate and the sealing plate; Thermal insulation cotton is filled in the filling cavity.

5. A converter waste heat boiler with flue gas flow guiding means according to claim 4, characterized in that A steel wire mesh is arranged between the thermal insulation cotton and the filling cavity.

6. A converter waste heat boiler with flue gas flow guiding means according to claim 4, characterized in that A second partition plate is arranged below the first partition plate, the second partition plate is welded and fixed to the second flange, and an air gap is arranged between the second partition plate and the first flange.

7. A converter waste heat boiler with flue gas flow guiding device according to claim 1, characterized in that: A stainless steel protective layer is arranged on the boiler pipe closest to the flue gas channel, the stainless steel protective layer is in the form of an arc-shaped plate, the stainless steel protective layer is arranged on the side facing the flue gas channel, and is used for preventing the boiler pipe from being washed by the high-temperature flue gas.

8. A converter waste heat boiler with flue gas flow guiding means according to claim 7, characterized in that The stainless steel protective layer and the boiler pipe are welded and fixed by intermittent welding.

Images