A split pipe box for primary cooler

Abstract

The present invention relates to a pipe box for a gas outlet cooler, and in particular to a split pipe box for a pre-cooler. It includes a single lower box body and two left and right pipe box covers fixedly connected to the lower box body; the lower box body includes a lower box wall, a C-shaped groove, a left lower flange and a right lower flange, the C-shaped groove is longitudinally fixedly connected to the lower box wall, and the lower box body is divided into left and right parts, the left lower flange and the right lower flange are fixedly connected to the lower box wall and the C-shaped groove, the left lower flange is located on the left side, and the right lower flange is located on the right side; the left and right pipe box covers have the same structure, both including a head and a flange, and the flange is fixedly connected to the bottom of the head; the left pipe box cover is fixedly connected to the left lower box body through a flange, and the right pipe box cover is fixedly connected to the right lower box body through a flange. The flange sealing reliability of the present invention is high, and the hidden danger of leakage of the pre-cooler pipe box flange is eliminated, which is conducive to the stable operation of gas cooling. The equipment structure is compact, and the key technical problem of large-scale pre-cooler is solved.

Description

Technical Field

[0001] The invention relates to a pipe box for a coal gas primary cooler, and in particular to a split pipe box for a primary cooler. Background Art

[0002] After the coke oven gas is cooled through the gas collecting pipe, the temperature is still relatively high and contains a large amount of ammonia and naphthalene. It needs to be initially purified by a primary cooler and the gas dew point needs to be further reduced to facilitate subsequent gas purification equipment. As the scale of the coking plant gradually increases, the primary cooler needs to be large-scaled to achieve the expected purification and cooling purposes.

[0003] Due to the square structure of the pre-cooler, the length of the cooling pipe box is close to 5 meters after the equipment is enlarged. Since the length of the square flange of the pipe box is too long, the accuracy of the flange cannot meet the use requirements, the flange sealing performance is difficult to achieve, and leakage problems occur from time to time, which in turn affects the normal operation of the pre-cooler. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a split pipe box for a pre-cooler, which has high flange sealing reliability, eliminates the hidden danger of flange leakage in the pre-cooler pipe box, is conducive to the stable operation of coal gas cooling, has a compact equipment structure, and solves the key technical problem of large-scale pre-cooler.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A split pipe box for a primary cooler comprises a single lower box body and left and right pipe box covers fixedly connected to the lower box body; the lower box body comprises a lower box wall, a C-shaped groove, a left lower flange and a right lower flange, the C-shaped groove is longitudinally fixedly connected to the lower box wall, dividing the lower box body into left and right parts, the left lower flange and the right lower flange are fixedly connected to the lower box wall and the C-shaped groove, the left lower flange is located on the left side, and the right lower flange is located on the right side; the left and right pipe box covers have the same structure, both comprising a head and a flange, and the flange is fixedly connected to the bottom of the head; the left pipe box cover is fixedly connected to the left lower box body through a flange, and the right pipe box cover is fixedly connected to the right lower box body through a flange.

[0007] It also includes a stud, a lower nut and an upper nut, wherein the lower nut is fixedly connected to the bottom surfaces of the left lower flange and the right lower flange.

[0008] It also includes a lifting lug, which is fixedly connected to the outer top surface of the head.

[0009] The sealing head is semicircular.

[0010] The U-shaped groove evenly divides the lower box body into two parts, the left and right pipe box covers have the same structure and size.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1) The U-shaped groove of the present invention evenly divides the lower box body into two parts, the structure is balanced, the length of the pipe box flange is reduced by half, and the flange sealing reliability is high.

[0013] 2) The U-shaped groove of the present invention is only welded to the lower box wall of the lower box body, and is not welded to the primary cooler tube sheet. The entire split tube box area is connected, which does not affect the arrangement of the tube bundle and has no flow dead zone.

[0014] 3) The lower nut of the present invention is fixedly connected to the bottom surfaces of the left lower flange and the right lower flange, so that the pipe box cover and the lower box body are easy to install and the space utilization rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic front view of the structure of the present invention;

[0016] Figure 2 It is a schematic side view of the structure of the present invention;

[0017] Figure 3 A schematic top view of the structure of the present invention;

[0018] Figure 4 It is a cross-sectional view of the connection part between the lower box body and the left and right pipe box covers of the present invention.

[0019] In the figure: 1-lower box body 2-left pipe box cover 3-right pipe box cover 4-stud 5-lower nut 6-upper nut 7-lifting ear 11-lower box wall 12-U-shaped groove 13-lower left flange 14-lower right flange 21-left head 22-upper left flange 31 right head 32-upper right flange DETAILED DESCRIPTION

[0020] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0021] [Example]

[0022] like Figures 1 to 4 As shown, a split pipe box for a primary cooler comprises a single lower box body 1 and a left pipe box cover 2 and a right pipe box cover 3 fixedly connected to the lower box body, and also comprises studs 4, lower nuts 5, upper nuts 6 and lifting ears 7.

[0023] The lower box body 1 includes a lower box wall 11, a C-shaped groove 12, a left lower flange 13 and a right lower flange 14. The C-shaped groove 12 is longitudinally fixed to the lower box wall 11, and evenly divides the lower box body 1 into two left and right parts. The left lower flange 13 and the right lower flange 14 are fixed to the lower box wall 11 and the C-shaped groove 12, and the left lower flange 13 is located on the left side, and the right lower flange 14 is located on the right side. The lower nut 5 is fixed to the bottom surface of the left lower flange 13 and the right lower flange 14.

[0024] The left pipe box cover 2 and the right pipe box cover 3 have the same structure and size. The left pipe box cover 2 includes a left head cover 21 and a left upper flange 22. The left upper flange 22 is fixed to the bottom of the left head cover 21. The right pipe box cover 3 includes a right head cover 31 and a right upper flange 32. The right upper flange 31 is fixed to the bottom of the right head cover 31. The left head cover 21 and the right head cover 31 are semicircular. The lifting lug 7 is fixed to the outer surface of the top of the left head cover 21 and the right head cover 31.

[0025] The left upper flange 22 of the left pipe box cover 2 is connected to the left lower flange 13 of the left lower box body 1 through studs 4, lower nuts 5 and upper nuts 6, thereby fixing the left pipe box cover 2 on the left lower box body 1.

[0026] The right upper flange 32 of the right pipe box cover 3 is connected to the right lower flange 14 of the right lower box body 1 through studs 4, lower nuts 5 and upper nuts 6, thereby fixing the right pipe box cover 3 on the right lower box body 1.

[0027] The U-shaped groove 12 of the present invention evenly divides the lower box body 1 into two left and right parts, the structure is balanced, the length of the pipe box flange is reduced by half, and the flange sealing reliability is high. The U-shaped groove 12 of the present invention is only welded to the lower box wall 11 of the lower box body 1, and is not welded to the primary cooler tube sheet. The entire split pipe box area is connected, which does not affect the arrangement of the tube bundle and has no flow dead zone. The lower nut 5 of the present invention is fixed to the bottom surface of the left lower flange 13 and the right lower flange 14, so that the pipe box cover and the lower box body 1 are easy to install and the space utilization rate is high.

[0028] The flange sealing of the present invention has high reliability, eliminates the hidden danger of leakage of the primary cooler pipe box flange, is conducive to the stable operation of gas cooling, has a compact equipment structure, and solves the key technical problem of large-scale primary coolers.

[0029] The above descriptions are only some specific implementation methods of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A split pipe box for a primary cooler, characterized in that: It comprises a single lower box body and two left and right pipe box covers fixedly connected to the lower box body; the lower box body comprises a lower box wall, a C-shaped groove, a left lower flange and a right lower flange, the C-shaped groove is longitudinally fixedly connected to the lower box wall, and divides the lower box body into left and right parts, the left lower flange and the right lower flange are fixedly connected to the lower box wall and the C-shaped groove, the left lower flange is located on the left side, and the right lower flange is located on the right side; the left and right pipe box covers have the same structure, both comprising a head and a flange, and the flange is fixedly connected to the bottom of the head; the left pipe box cover is fixedly connected to the left lower box body through the flange, and the right pipe box cover is fixedly connected to the right lower box body through the flange.

2. A primary cooler split pipe box according to claim 1, characterized in that: It also includes a stud, a lower nut and an upper nut, wherein the lower nut is fixedly connected to the bottom surfaces of the left lower flange and the right lower flange.

3. The split pipe box of the primary cooler according to claim 1, characterized in that: It also includes a lifting lug, which is fixedly connected to the outer top surface of the head.

4. A primary cooler split pipe box according to claim 1, characterized in that: The sealing head is semicircular.

5. The primary cooler split pipe box according to claim 1, characterized in that: The U-shaped groove evenly divides the lower box body into two parts, the left and right pipe box covers have the same structure and size.

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