Dry quenching clogging-free water cooling sleeve

Abstract

The utility model discloses a dry quenching clogging-free water cooling sleeve which comprises an upper flange, an upper cylinder body is installed at the bottom end of the upper flange, the bottom end of the upper cylinder body is connected to a lower cylinder body through an expansion joint, a lower flange is installed at the bottom end of the lower cylinder body, supporting pieces are installed at the lower ends of the two sides of the lower cylinder body, and springs are installed at the bottoms of the supporting pieces. A plurality of ash conveying pipes are arranged at the inner ends of the upper cylinder body and the lower cylinder body at equal intervals, baffle plates are arranged in the upper cylinder body and the lower cylinder body, a cooling water outlet is formed in the right side of the upper end of the upper cylinder body, and a cooling water inlet pipe is arranged at the bottom end of the left side of the lower cylinder body. The leakage phenomenon of the water cooling sleeve is avoided, and safe, efficient and stable production of the dry quenching device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of dry quenching technology in the coking industry, in particular to a water-cooled sleeve for dry quenching without clogging. Background Art

[0002] Baosteel New Area has two CDQ processes with a capacity of 300 tons / hour. Each CDQ unit is equipped with two water-cooling sleeves, for a total of four. Since it was put into operation in 2015, the service life of the water-cooling sleeves has been about 6 months, and cooling water has leaked into the CDQ furnace cooling system. Water decomposes into hydrogen in a high-temperature environment, causing the system to exceed the hydrogen standard and posing an explosion risk. This seriously affects the efficient, safe and stable production of the CDQ process.

[0003] The phenomenon of damaged water-cooling sleeves was analyzed by statistics. The water-cooling sleeves currently used are composed of 46 individual independent small water-cooling sleeves evenly arranged. The annular head at the bottom of the sleeve cracked, causing cooling water to enter the coke powder side and enter the dry quenching furnace system. The reason is that the circulating cooling water system of our factory is open. The weather in the north is windy and sandy, and leaves, plastic bags, sand and other debris can easily enter the cooling tower pool. The cooling water flow channel of the independent small water-cooling sleeve is narrow, only 9mm wide, and it is very easy to be blocked. The water flow rate gradually slows down and eventually stops. At this time, the heat of the high-temperature coke powder of about 600℃ cannot be replaced, causing the weak welds of the annular head to crack and eventually be damaged.

[0004] Four water-cooling sleeves have been damaged in the two years since it was put into operation. However, due to the long time of each replacement and maintenance, the general maintenance and process temperature rise and fall take a total of 3 days, which has a huge impact on the adjustment ratio of the blast furnace in the subsequent process, resulting in huge indirect economic losses.

[0005] If the leakage of the water-cooling sleeve can be avoided, the dry coke quenching process can be produced efficiently, safely and stably, which has a huge extended benefit to the stable organization of the blast furnace. At the same time, the pollution of waste gas and wastewater in terms of environmental protection will be zero, which has huge social benefits. Therefore, the present invention provides a dry coke quenching water-cooling sleeve without clogging to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a water-cooled sleeve for dry coke quenching without clogging, so as to solve the problems in the above-mentioned background technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a water-cooled sleeve for dry coke quenching without clogging, comprising:

[0008] An upper flange, wherein an upper cylinder is installed at the bottom end of the upper flange, the bottom end of the upper cylinder is connected to the lower cylinder through an expansion joint, and a lower flange is installed at the bottom end of the lower cylinder, and support members are installed at the lower ends of both sides of the lower cylinder, and springs are installed at the bottom of the support members;

[0009] Ash conveying pipes are provided at the inner ends of the upper cylinder and the lower cylinder, and a plurality of ash conveying pipes are provided at equal intervals. Baffles are installed inside the upper cylinder and the lower cylinder. A cooling water outlet is installed on the right side of the upper end of the upper cylinder, and a cooling water inlet is installed on the bottom left end of the lower cylinder.

[0010] Preferably, as a preferred embodiment of the utility model, the expansion joints are provided with two groups, and the two groups of expansion joints are respectively arranged on both sides of the upper cylinder and the lower cylinder.

[0011] Preferably, as a preferred embodiment of the present invention, a tie rod bolt is installed on the expansion joint.

[0012] Preferably, as a preferred embodiment of the present invention, the baffles installed inside the upper cylinder and the lower cylinder are provided with two sets of upper and lower baffles in a symmetrical structure.

[0013] Preferably, as a preferred embodiment of the present invention, the support member is a triangular structure.

[0014] Preferably, as a preferred embodiment of the present invention, the cooling water outlet is in a communicating structure with the cooling water inlet pipe.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model solves the problem of water cooling sleeve leakage.

[0017] 2. The utility model ensures safe, efficient and stable production of the dry coke quenching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] In the figure: 1. upper flange; 2. cooling water outlet pipe; 3. baffle; 4. ash conveying pipe; 5. tie rod bolt; 6. expansion joint; 7. support; 8. spring; 9. lower flange; 10. upper cylinder; 11. lower cylinder; 12. cooling water inlet pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" 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 a connection through an intermediate medium. It can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The meaning of "multiple" in the present utility model is two or more, and unless otherwise clearly and specifically limited, they all fall within the scope of protection of the present utility model.

[0023] Example: Figure 1 , the utility model provides a technical solution: including:

[0024] An upper flange 1, an upper cylinder 10 is installed at the bottom of the upper flange 1, the bottom of the upper cylinder 10 is connected to the lower cylinder 11 through an expansion joint 6, and a lower flange 9 is installed at the bottom of the lower cylinder 11, and support members 7 are installed at the lower ends of both sides of the lower cylinder 11, and a spring 8 is installed at the bottom of the support member 7;

[0025] An ash conveying pipe 4 is provided at the inner end of the upper cylinder 10 and the lower cylinder 11, and a plurality of ash conveying pipes 4 are provided at equal intervals. A baffle 3 is installed inside the upper cylinder 10 and the lower cylinder 11, a cooling water outlet 2 is installed on the right side of the upper end of the upper cylinder 10, and a cooling water inlet pipe 12 is installed on the bottom end of the left side of the lower cylinder 11.

[0026] There are two groups of expansion joints 6 , and the two groups of expansion joints 6 are arranged on both sides of the upper cylinder 10 and the lower cylinder 11 respectively.

[0027] The expansion joint 6 is provided with a pull rod bolt 5 .

[0028] Baffles 3 are installed inside the upper cylinder 10 and the lower cylinder 11 and are provided in two groups, upper and lower, in a symmetrical structure.

[0029] The support member 7 is a triangular structure.

[0030] The cooling water outlet 2 is in communication with the cooling water inlet pipe 12 .

[0031] Working principle: Use the outer tube and tube sheet of the replaced old water-cooling jacket, disassemble them protectively, and replace the original cooling tube with a Φ159×10 20G seamless steel tube. To ensure its heat exchange effect and strength, install two baffles in the middle. Weld 6 M27 stud bolts for transportation and fixing bolts at the expansion joint of the outer tube, and loosen them after installation. Evenly distribute 4 spring buffer devices at the support of the original installation platform to support and ensure the expansion margin of the outer tube.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A water-cooled casing for dry coke quenching without clogging, characterized in that: include: An upper flange (1), wherein an upper cylinder (10) is installed at the bottom end of the upper flange (1), the bottom end of the upper cylinder (10) is connected to a lower cylinder (11) via an expansion joint (6), and a lower flange (9) is installed at the bottom end of the lower cylinder (11), support members (7) are installed at the lower ends of both sides of the lower cylinder (11), and a spring (8) is installed at the bottom of the support member (7); An ash conveying pipe (4) is provided at the inner end of the upper cylinder (10) and the lower cylinder (11), and a plurality of the ash conveying pipes (4) are provided at equal intervals. A baffle (3) is installed inside the upper cylinder (10) and the lower cylinder (11). A cooling water outlet (2) is installed on the right side of the upper end of the upper cylinder (10), and a cooling water inlet pipe (12) is installed on the left bottom end of the lower cylinder (11).

2. The non-clogging water-cooling sleeve for dry coke quenching according to claim 1, characterized in that: The expansion joints (6) are provided in two groups, and the two groups of expansion joints (6) are arranged on both sides of the upper cylinder (10) and the lower cylinder (11) respectively.

3. The non-clogging water-cooling sleeve for dry coke quenching according to claim 1, characterized in that: A pull rod bolt (5) is installed on the expansion joint (6).

4. The non-clogging water-cooling sleeve for dry coke quenching according to claim 1 is characterized by: The baffles (3) are installed inside the upper cylinder (10) and the lower cylinder (11) and are provided in two groups, upper and lower, and present a symmetrical structure.

5. The non-clogging water-cooling sleeve for dry coke quenching according to claim 1, characterized in that: The support member (7) is a triangular structure.

6. The non-clogging water-cooled casing for dry coke quenching according to claim 1, characterized in that: The cooling water outlet (2) and the cooling water inlet pipe (12) are in a communicating structure.

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