Tower kettle jacket structure for preventing phosgene leakage

Abstract

The utility model discloses a tower kettle jacket structure for preventing phosgene leakage, which is fixed on the outer wall of a tower kettle barrel, a skirt barrel is arranged at the bottom of the tower kettle barrel, the tower kettle jacket structure comprises a jacket, two ends of the jacket are respectively welded and fixed on the outer wall of the tower kettle barrel and the outer wall of the skirt barrel through flat cover structures, and the skirt barrel is arranged on the outer wall of the jacket. The bottom end of the jacket is also provided with a jacket seal head, the jacket seal head is fixed on the inner wall of the skirt cylinder body, the position of the jacket seal head corresponds to that of the bottom end of the jacket, and the upper end of the skirt cylinder body is fixed on a tower kettle seal head of the tower kettle cylinder body. The jacket structure can prevent phosgene in the tower kettle from leaking, the skirt is connected with the lower sealing head of the tower kettle, the supporting strength of the tower kettle is guaranteed, manufacturing is convenient, a stress point is lifted due to adjustment of the supporting position of the skirt, and finite element analysis and calculation cost is saved.

Description

Technical Field

[0001] The utility model relates to a tower kettle, in particular to a tower kettle jacket structure for preventing phosgene leakage. Background Art

[0002] Because the medium of the tower kettle cylinder is phosgene, which is a highly toxic gas, a jacket structure is set on the cylinder of the tower kettle section to prevent leakage. According to conventional structural design, when the skirt is connected to the jacket head, the stress point of the tower is on the fillet weld connecting the jacket and the cylinder, where the stress is very poor, posing a great safety hazard.

[0003] Problems:

[0004] 1. There are many pipe openings on the bottom section of the tower, which increases the probability of leakage.

[0005] 2. The jacketed cylinder and the connecting pipe adopt a sleeve structure to expose the leakage point.

[0006] 3. The conventional skirt is connected to the jacket head, and the supporting structure is not ideal.

[0007] 4. If the entire tower is supported by the fillet weld connecting the jacket and the cylinder, the support force points are poor.

[0008] 5. Local stress calculation is required at the welding point between the jacket cylinder and the tower kettle, which is very expensive. Utility Model Content

[0009] In order to solve the defects of the above-mentioned prior art, the utility model provides a tower kettle jacket structure for preventing phosgene leakage. The utility model jacket structure can prevent phosgene leakage in the tower kettle. The skirt is connected to the lower head of the tower kettle, which ensures the supporting strength of the tower and is easy to manufacture. The stress point is also improved due to the adjustment of the skirt support position, saving the cost of finite element analysis calculation.

[0010] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a tower kettle jacket structure for preventing phosgene leakage, which is fixed to the outer wall of the tower kettle cylinder, and a skirt cylinder is arranged at the bottom of the tower kettle cylinder, including a jacket, and the two ends of the jacket are respectively welded and fixed to the outer wall of the tower kettle cylinder and the outer wall of the skirt cylinder with a flat cover structure, and a jacket head is also arranged at the bottom end of the jacket, and the jacket head is fixed to the inner wall of the skirt cylinder, and the jacket head corresponds to the bottom end position of the jacket, and the upper end of the skirt cylinder is fixed to the tower kettle head of the tower kettle cylinder.

[0011] Furthermore, the flat cover structure includes an upper flat cover and a lower flat cover; the first end of the upper flat cover is welded and fixed to the upper end of the jacket, and the second end is welded and fixed to the outer wall of the tower kettle cylinder; the first end of the lower flat cover is welded and fixed to the lower end of the jacket, and the second end is welded and fixed to the outer wall of the skirt cylinder.

[0012] Furthermore, the lower side of the first end of the upper flat cover is a second full weld, and the upper and lower sides of the second end are both first full welds.

[0013] Furthermore, the upper side of the first end of the lower flat cover is a third full weld, and the lower side of the second end is a fourth full weld.

[0014] Furthermore, the jacket head adopts a hemispherical structure.

[0015] Furthermore, the jacket head and the insulation layer head of the insulation layer are fixedly connected by pillars.

[0016] Furthermore, the skirt cylinder is provided with through holes, the through holes are in a plurality and evenly distributed around the circumference, and the through holes are located on the upper side of the jacket seal head.

[0017] Furthermore, the inner wall of the skirt cylinder is fixedly connected to the insulation layer head of the insulation layer through an inner plate, and the outer wall of the skirt cylinder is fixedly connected to the cylinder of the insulation layer through an outer plate.

[0018] In summary, the utility model has achieved the following technical effects:

[0019] The utility model adopts a fully welded structure between the pipe and the jacket cylinder to avoid leakage;

[0020] The jacket cylinder of the utility model adopts an upper and lower flat cover structure, which is respectively connected to the tower kettle section cylinder and the skirt cylinder to reduce leakage points;

[0021] The jacket head of the utility model adopts a hemispherical structure and is connected to the skirt cylinder, which has good sealing effect and strong supporting strength;

[0022] The utility model evenly arranges 8 Through holes reduce the number of holes on the jacket and improve the strength of the jacket;

[0023] The utility model provides a skirt seat connected with the lower head of the tower kettle for support, and has high support strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of a tower kettle jacket structure for preventing phosgene leakage provided by an embodiment of the utility model;

[0025] Figure 2 It is a welding diagram of the upper flat cover;

[0026] Figure 3 It is the welding diagram of the lower flat cover;

[0027] Figure 4 yes Figure 1 A partial enlarged schematic diagram. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] Example:

[0035] like Figure 1 As shown, a tower kettle jacket structure for preventing phosgene leakage is fixed to the outer wall of the tower kettle cylinder 1, and a skirt cylinder 4 is arranged at the bottom of the tower kettle cylinder 1, including a jacket 2, and the two ends of the jacket 2 are respectively welded and fixed to the outer wall of the tower kettle cylinder 1 and the outer wall of the skirt cylinder 4 with a flat cover structure, and a jacket head 203 is also arranged at the bottom end of the jacket 2, and the jacket head 203 is fixed to the inner wall of the skirt cylinder 4, and the jacket head 203 corresponds to the bottom end position of the jacket 2, and the upper end of the skirt cylinder 4 is fixed to the tower kettle head of the tower kettle cylinder 1.

[0036] The utility model welds the jacket structure to the outer wall of the tower kettle cylinder and the skirt cylinder in a flat cover structure, which can strictly seal the phosgene in the gap to prevent leakage. At the same time, the support strength is strengthened by welding on the two cylinders, and the stability is better.

[0037] The flat cover structure includes an upper flat cover 201 and a lower flat cover 202; the first end of the upper flat cover 201 is welded and fixed to the upper end of the jacket 2, and the second end is welded and fixed to the outer wall of the tower kettle cylinder 1; the first end of the lower flat cover 202 is welded and fixed to the lower end of the jacket 2, and the second end is welded and fixed to the outer wall of the skirt cylinder 4.

[0038] in, Figure 2 This is the welding diagram of the upper flat cover. Figure 3 2 is a schematic diagram of the welding of the lower flat cover, the lower side of the first end of the upper flat cover 201 is the second full weld 6, and the upper and lower sides of the second end are both the first full weld 5. The upper side of the first end of the lower flat cover 202 is the third full weld 8, and the lower side of the second end is the fourth full weld 7.

[0039] The utility model adopts a full-weld structure so that there is no leakage point and leakage is prevented.

[0040] like Figure 4 As shown, the jacket head 203 adopts a hemispherical structure and is connected to the skirt cylinder, so the supporting strength is good.

[0041] The jacket seal 203 and the insulation layer seal of the insulation layer 3 are fixedly connected by support pillars 204, so that the jacket has good supporting strength.

[0042] The skirt body 4 is provided with a plurality of through holes 401 evenly distributed around the circumference, and the through holes 401 are located on the upper side of the jacket head 203. In order to reduce the number of holes on the jacket, 8 through holes 401 are evenly distributed on the skirt of the jacket section. of through holes.

[0043] The inner wall of the skirt cylinder 4 is fixedly connected to the insulation layer head of the insulation layer 3 through the inner plate 403 , and the outer wall of the skirt cylinder 4 is fixedly connected to the cylinder of the insulation layer 3 through the outer plate 402 .

[0044] The above description is only a preferred implementation mode of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A tower kettle jacket structure for preventing phosgene leakage, fixed to the outer wall of a tower kettle cylinder (1), wherein a skirt cylinder (4) is provided at the bottom of the tower kettle cylinder (1), characterized in that: The invention comprises a jacket (2), the two ends of which are respectively welded and fixed to the outer wall of a tower still barrel (1) and the outer wall of a skirt barrel (4) with a flat cover structure; the bottom end of the jacket (2) is also provided with a jacket head (203), the jacket head (203) is fixed to the inner wall of the skirt barrel (4), the jacket head (203) corresponds to the bottom end position of the jacket (2), and the upper end of the skirt barrel (4) is fixed to the tower still barrel head of the tower still barrel (1).

2. The tower bottom jacket structure for preventing phosgene leakage according to claim 1, characterized in that: The flat cover structure comprises an upper flat cover (201) and a lower flat cover (202); the first end of the upper flat cover (201) is welded and fixed to the upper end of the jacket (2), and the second end is welded and fixed to the outer wall of the tower kettle cylinder (1); the first end of the lower flat cover (202) is welded and fixed to the lower end of the jacket (2), and the second end is welded and fixed to the outer wall of the skirt cylinder (4).

3. The tower bottom jacket structure for preventing phosgene leakage according to claim 2, characterized in that: The lower side of the first end of the upper flat cover (201) is a second full weld (6), and the upper and lower sides of the second end are both first full welds (5).

4. The tower bottom jacket structure for preventing phosgene leakage according to claim 2, characterized in that: The upper side of the first end of the lower flat cover (202) is a third full weld (8), and the lower side of the second end is a fourth full weld (7).

5. The tower bottom jacket structure for preventing phosgene leakage according to claim 1, characterized in that: The jacket seal head (203) adopts a hemispherical structure.

6. The tower bottom jacket structure for preventing phosgene leakage according to claim 1, characterized in that: The jacket seal head (203) and the insulation layer seal head of the insulation layer (3) are fixedly connected by means of a support (204).

7. The tower bottom jacket structure for preventing phosgene leakage according to claim 1, characterized in that: The skirt cylinder (4) is provided with a plurality of through holes (401) evenly distributed around the circumference, and the through holes (401) are located on the upper side of the jacket seal head (203).

8. The tower bottom jacket structure for preventing phosgene leakage according to claim 1, characterized in that: The inner wall of the skirt cylinder (4) is fixedly connected to the insulation layer head of the insulation layer (3) via an inner plate (403), and the outer wall of the skirt cylinder (4) is fixedly connected to the cylinder of the insulation layer (3) via an outer plate (402).

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