Quenching ring with rotational flow flushing function

Abstract

The utility model belongs to the technical field of gasification furnace chilling chambers, and relates to a chilling ring with a rotational flow flushing function, which comprises a water inlet pipe, a water ring and a downcomer, a nappe is arranged on the downcomer, and two ends of the nappe are respectively communicated with the water inlet pipe and the water ring; a water channel is arranged in the water ring and communicated to the water tongue, and a water outlet of the water channel faces the inner wall of the downcomer; the pipe wall thickness of the side, away from the nappe, of the upper water inlet of the water channel is larger than that of the side, away from the nappe, of the lower water outlet of the water channel; by increasing the thickness of the part of the water ring opposite to the jet direction of the nappe, the water ring is effectively prevented from being quickly worn and penetrated due to high-pressure jet of the nappe, so that the service life of the water ring is prolonged, the frequency of dismounting and mounting the chilling chamber due to replacement of the water ring is reduced, and the service life of the chilling chamber is prolonged. According to the utility model, the service life of the water ring is prolonged, and the operation cost of the chilling chamber is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of the quench chamber of a gasifier, and relates to a quench ring with a swirl flushing function. Background Art

[0002] The quench chamber is an important component in a gasifier. Subject to the corrosion and erosion of high-temperature gas, its operating environment is harsh. After the quench water in the quench chamber is evenly distributed by the quench ring, it forms a uniformly downward water film flowing down on the inner surface of the downcomer, preventing the high-temperature gas from damaging the downcomer and playing a role in protecting the downcomer from deformation and ablation caused by the influence of high temperature.

[0003] The cooling water for the existing quench chamber usually adopts circulating water, commonly known as "black water". Since various impurities and fine particles of different sizes are carried inside after the circulating water circulates multiple times, and the circulating water is sprayed onto the water ring located in the quench chamber at high pressure through the water tongue after entering the water inlet pipe, the wear rate of the water ring at the part facing the spraying direction of the water tongue is relatively fast. Often, when other parts of the water ring are still intact, damage or even penetration will occur at the water tongue spraying part of the water ring, thus requiring the replacement of the water ring. And replacing the water ring requires the entire quench chamber to be disassembled before it can be carried out. After the replacement is completed, the entire quench chamber needs to be reinstalled, resulting in a large amount of work. It brings great inconvenience to the long-term safe and stable operation of the gasifier. In addition, since the water ring is usually arc-shaped, the flow rate of the circulating water decreases at the arc-shaped outlet of the water ring, resulting in easy deposition of impurities at the water ring outlet, causing poor circulation of the water channel of the water ring and affecting the quenching effect of the quench chamber.

[0004] Therefore, a device or structure that can enhance the strength of the water ring towards the spraying direction of the water tongue is needed to avoid frequent replacement due to local damage of the water ring, thereby reducing the unnecessary disassembly and assembly times of the quench chamber and lowering the operating cost of the quenching operation. Summary of the Utility Model

[0005] The technical solution adopted by the utility model to solve the technical problem is: a quench ring with a swirl flushing function, comprising: a water inlet pipe, a water ring, and a downcomer. The downcomer is in a cylindrical shape and is coaxially sleeved on the quench ring of the quench chamber from top to bottom. The water inlet pipe is located on the outer wall of the downcomer, the water ring is located on the inner wall of the downcomer, and a water tongue is provided on the upper part of the pipe wall of the downcomer. Both ends of the water tongue are respectively communicated with the water outlet of the water inlet pipe and the water inlet of the water ring.

[0006] A semi-circular ring-shaped water channel is arranged inside the water ring. The water inlet of the water channel is communicated with the water tongue, the water outlet of the water channel faces the inner wall of the downcomer, and the semi-circular ring-shaped concave opening of the water channel faces the inner wall side of the downcomer.

[0007] The upper part of the longitudinal section of the water ring is rectangular, the lower part of the longitudinal section of the water ring is fan-shaped, the water inlet of the water channel is located at the upper port of the semi-circular ring, the water outlet of the water channel is located at the lower port of the semi-circular ring, and the wall thickness of the water channel on the side away from the water tongue at the upper water inlet is greater than the wall thickness of the water channel on the side away from the water tongue at the lower water outlet of the water channel;

[0008] Washing holes are provided on the wall of the water channel on the side away from the water tongue at the lower water outlet of the water channel. The washing holes are arranged along the radial direction of the semi-circular ring of the water ring, and both ends of the washing holes communicate with the water channel and the inner cavity of the quench chamber respectively.

[0009] Preferably, a swirl vane is provided at the water tongue. The swirl vane is in the shape of a rectangular thin sheet, and the swirl vane is vertically fixedly connected inside the water tongue. The swirl vane has an angle that gradually deflects horizontally around the circumference of the quench chamber.

[0010] Preferably, the water inlet of the water inlet pipe is lower than the water outlet of the water inlet pipe, and a flange is provided at the water inlet of the water inlet pipe.

[0011] Preferably, the water inlet of the water inlet pipe is bent outward in an arc along the quench chamber.

[0012] Preferably, a plurality of the water inlet pipes and water rings are horizontally and evenly distributed around the downcomer.

[0013] More preferably, the water inlet pipes and the water rings are arranged in one-to-one correspondence.

[0014] More preferably, each water inlet pipe is provided with a plurality of water rings.

[0015] More preferably, three to twelve water inlet pipes are horizontally and evenly distributed around the downcomer respectively.

[0016] More preferably, six water inlet pipes are horizontally and evenly distributed around the downcomer.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. By adopting the method of increasing the thickness of the part of the water ring facing the jet direction of the water tongue, the present utility model effectively prevents the water ring from being quickly worn through due to the high-pressure jet of the water tongue, thereby prolonging the service life of the water ring and reducing the number of times of disassembling and installing the quench chamber due to replacing the water ring. Therefore, the present utility model prolongs the service life of the water ring and reduces the operation cost of the quench chamber.

[0019] 2. By arranging washing holes at the arc-shaped outlet of the water ring, a vortex is formed at the arc-shaped outlet of the water ring. The deposited impurities at the outlet of the water ring are carried away by the rotation of the vortex. Therefore, the present utility model can effectively avoid the deposition of impurities at the outlet of the water ring, ensure the smoothness of the water flow channel in the water ring, and ensure the quenching effect of the quench chamber under long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic structural diagram of a quench ring with a swirl flushing function;

[0021] Figure 2 is Figure 1 Schematic A-A cross-sectional view of;

[0022] Figure 3 Partial enlarged schematic diagram of the water ring, water tongue and water inlet pipe.

[0023] In the figure, 1, water inlet pipe; 2, water ring; 3, downcomer; 4, water tongue; 5, water channel; 6, flushing hole; 7, swirl vane; 8, flange. Specific implementation manner

[0024] Next, the relevant technologies in the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Refer to Figures 1 to 3 , a quench ring with a swirl flushing function, including: a water inlet pipe 1, a water ring 2, and a downcomer 3. The downcomer 3 is in a cylindrical shape and is coaxially sleeved on the quench ring of the quench chamber from top to bottom. The water inlet pipe 1 is located on the outer wall of the downcomer 3, and the water ring 2 is located on the inner wall of the downcomer 3. A water tongue 4 is provided on the upper part of the wall of the downcomer 3. The two ends of the water tongue 4 are respectively connected to the water outlet of the water inlet pipe 1 and the water inlet of the water ring 2; the quench water passes through the water inlet pipe 1 and then enters the water ring 2 through the water tongue 4, and the water ring 2 sends the quench water into the quench chamber;

[0026] A semi-circular water channel 5 is provided in the water ring 2. The water inlet of the water channel 5 is connected to the water tongue 4, the water outlet of the water channel 5 faces the inner wall of the downcomer 3, and the semi-circular notch of the water channel 5 faces the inner wall side of the downcomer 3; the quench water passes through the semi-circular water channel 5 in the water ring 2 and then reversely sprays the high-pressure quench water onto the inner wall of the quench chamber, thereby reducing the temperature of the inner wall of the quench chamber. The function of the semi-circular water channel 5 is to convert the high-pressure quench water sprayed radially inwards by the water tongue 4 and then spray it radially outwards onto the inner wall of the quench chamber;

[0027] The upper part of the longitudinal section of the water ring 2 is rectangular, and the lower part of the longitudinal section of the water ring 2 is fan-shaped. The water inlet of the water channel 5 is located at the upper port of the semi-circular ring, and the water outlet of the water channel 5 is located at the lower port of the semi-circular ring. The wall thickness of the water channel 5 on the side away from the water tongue 4 at the upper water inlet is greater than the wall thickness of the water channel 5 on the side away from the water tongue 4 at the lower water outlet; since the wear at the part of the water ring 2 facing the spraying direction of the water tongue 4 is larger and faster, the upper part of the water ring 2 is set to be cuboid-shaped, that is, the vertical section is rectangular. Therefore, the wall thickness of the water channel wall at the worn part of the water channel 5 is large and more wear-resistant. High wear-resistant steel can also be used at this place to increase the wear resistance of the worn part of the water channel 5; while the flow direction of the quench water at the lower part of the water ring 2 is arc-shaped and the wear is small, so an ordinary thickness of the pipe wall can be used at the lower part of the water ring 2 to prevent wear;

[0028] Flushing holes 6 are provided on the pipe wall of the water channel 5 on the side away from the water tongue 4 at the lower water outlet. The flushing holes 6 are arranged along the radial direction of the semi-circular ring of the water ring 2. Both ends of the flushing holes 6 are respectively communicated with the water channel 5 and the inner cavity of the quench chamber; the quench water will shoot outwards from the holes at the flushing holes 6, so eddy currents will be generated around the inner mouth of the flushing holes 6. The eddy currents will rotate and carry away the deposited impurities at the outlet of the water ring 2. Therefore, it can effectively prevent impurity deposition at the outlet of the water ring and ensure the smoothness of the water flow channel in the water ring 2.

[0029] Further, a swirl vane 7 is provided at the water tongue 4. The swirl vane 7 is in the shape of a rectangular thin sheet. The swirl vane 7 is vertically fixedly connected inside the water tongue 4. The swirl vane 7 is provided with an angle that gradually deflects horizontally around the circumferential direction of the quench chamber; the swirl vane 7 causes the quench water to generate a swirl after ejection, so that the quench water can be distributed to the inner wall of the quench chamber according to the swirl direction, thereby generating a downward flowing quench water with a certain width, thus ensuring the quenching effect of the quench chamber and changing the discretely distributed quench water without the swirl vane 7 into continuously distributed quench water.

[0030] Further, the water inlet of the water inlet pipe 1 is lower than the water outlet of the water inlet pipe 1, and a flange 8 is provided at the water inlet of the water inlet pipe 1; the flange 8 is used for butt-connecting the circulating water source or the circulating water pipe of the quench water.

[0031] Further, the water inlet of the water inlet pipe 1 is bent outwards in an arc along the quench chamber. The outward arc-shaped bending is beneficial to pipeline butt-joint and prevents adverse effects on the water inlet pipe 1 due to the too high temperature of the quench chamber pipe wall.

[0032] Further, a plurality of the water inlet pipes 1 and the water rings 2 are horizontally and evenly distributed around the downcomer 3; the number of the water inlet pipes 1 and the water rings 2 is set according to specific conditions. The larger the perimeter of the horizontal plane of the quench chamber, the more the number of the water inlet pipes 1 and the water rings 2 is set. On the contrary, fewer water inlet pipes 1 and water rings 2 are set.

[0033] Furthermore, the water inlet pipes 1 and the water rings 2 are arranged in one-to-one correspondence; the one-to-one correspondence arrangement of the water inlet pipes 1 and the water rings 2 is adopted according to specific circumstances, which is convenient for controlling the inlet water flow rate and flow volume.

[0034] Furthermore, multiple water rings 2 are arranged on the water inlet pipes 1; the one-to-many arrangement of the water inlet pipes 1 and the water rings 2 is adopted according to specific circumstances, making the distribution of the quench water in the quench chamber more uniform and the quenching effect better.

[0035] Furthermore, three to twelve water inlet pipes 1 are horizontally and evenly distributed around the downcomer 3.

[0036] Furthermore, six water inlet pipes 1 are horizontally and evenly distributed around the downcomer 3.

[0037] In summary, the present utility model effectively prevents the water ring from being quickly worn and penetrated due to the high-pressure injection of the water tongue by adopting the method of increasing the thickness of the part of the water ring facing the injection direction of the water tongue, thereby prolonging the service life of the water ring and reducing the number of times of disassembling and installing the quench chamber due to replacing the water ring. The present utility model prolongs the service life of the water ring and reduces the operation cost of the quench chamber. Therefore, the present utility model has a wide application prospect.

[0038] It should be emphasized that: the above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A quenching ring with swirl flushing function, characterized in that: include: A water inlet pipe (1), a water ring (2), and a downcomer (3), wherein the downcomer (3) is cylindrical and is coaxially sleeved on the quenching ring of the quenching chamber from top to bottom, the water inlet pipe (1) is located on the outer wall of the downcomer (3), the water ring (2) is located on the inner wall of the downcomer (3), and a water tongue (4) is provided on the upper part of the pipe wall of the downcomer (3), and the two ends of the water tongue (4) are respectively connected to the water outlet of the water inlet pipe (1) and the water inlet of the water ring (2); A semicircular ring-shaped water channel (5) is provided in the water ring (2); a water inlet of the water channel (5) is connected to the water tongue (4); a water outlet of the water channel (5) faces the inner wall of the downcomer (3); and a semicircular ring-shaped notch of the water channel (5) faces one side of the inner wall of the downcomer (3); The upper part of the longitudinal section of the water ring (2) is rectangular, the lower part of the longitudinal section of the water ring (2) is fan-shaped, the water inlet of the water channel (5) is located at the upper end of the semicircular ring, the water outlet of the water channel (5) is located at the lower end of the semicircular ring, and the thickness of the pipe wall at the upper water inlet of the water channel (5) away from the water tongue (4) is greater than the thickness of the pipe wall at the lower water outlet of the water channel (5) away from the water tongue (4); A flushing hole (6) is provided on the pipe wall of the lower water outlet of the water channel (5) away from the water tongue (4), and the flushing hole (6) is arranged along the radial direction of the semicircular ring shape of the water ring (2). The two ends of the flushing hole (6) are respectively connected to the water channel (5) and the inner cavity of the quenching chamber.

2. A quenching ring with swirl flushing function as claimed in claim 1, characterized in that: The water tongue (4) is provided with a swirl sheet (7), the swirl sheet (7) is in the shape of a rectangular thin sheet, the swirl sheet (7) is vertically fixedly connected in the water tongue (4), and the swirl sheet (7) is provided with a gradually horizontal deflection angle in the circumferential direction around the quenching chamber.

3. A quenching ring with swirl flushing function as claimed in claim 1, characterized in that: The water inlet of the water inlet pipe (1) is lower than the water outlet of the water inlet pipe (1), and a flange (8) is provided at the water inlet of the water inlet pipe (1).

4. A quenching ring with swirl flushing function as claimed in claim 3, characterized in that: The water inlet of the water inlet pipe (1) is bent outward in an arc shape along the quenching chamber.

5. A quenching ring with swirl flushing function as claimed in claim 1, characterized in that: The water inlet pipe (1) and the water ring (2) are uniformly distributed horizontally in a plurality around the downcomer (3).

6. A quenching ring with swirl flushing function as claimed in claim 5, characterized in that: The water inlet pipe (1) and the water ring (2) are arranged in a one-to-one correspondence.

7. A quenching ring with swirl flushing function as claimed in claim 5, characterized in that: The water inlet pipe (1) is provided with a plurality of water rings (2).

8. A quenching ring with swirl flushing function as claimed in claim 5, characterized in that: There are three to twelve water inlet pipes (1) evenly distributed horizontally around the downcomer (3).

9. A quenching ring with swirl flushing function as claimed in claim 8, characterized in that: Six water inlet pipes (1) are evenly distributed horizontally around the downcomer (3).

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