Condensate discharge structure applied to a converter

Abstract

The utility model relates to a kind of condensate discharge structure applied to converter, including converter lower head, head center connector, discharge port, discharge port and head center connector are mutually separated, discharge port is connected with discharge pipe, one siphon pipe is connected in discharge pipe, the middle part of this siphon pipe has a bending part, the both ends of bending part are respectively first straight section and second straight section, the outer end of discharge pipe is provided with an end cap, flow guide port is opened in end cap, discharge pipe is provided with an inner ring body, inner ring body is sealingly connected with inner cap, inner cap and end cap form a storage cavity between, a through-hole is opened in inner ring body, the first straight section of siphon pipe extends to storage cavity through through-hole, removable plug is connected on flow guide port.The utility model can solve the technical problem that the condensate of lower head center ring seam cannot be discharged in time, which can easily lead to equipment corrosion, affecting equipment safety and service life.

Description

Technical Field

[0001] This utility model belongs to the field of converter technology, specifically relating to a condensate draining structure applied to a converter. Background Technology

[0002] A shift converter is a coal gasification device, and its structure can be referenced from the high-efficiency shift converter disclosed in publication number CN111250001A. Because the lower head of the shift converter has a connecting pipe or header at its center, there is an annular seam. To ensure the strength of the lower head, the discharge pipe can only be located away from the annular seam on one side. This causes condensate generated by changes in operating conditions inside the shift converter to accumulate at the annular seam and cannot be discharged. Over time, this leads to corrosion of the parts in contact with the condensate, affecting the safety and service life of the equipment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a condensate drainage structure for a converter, which solves the problem that the condensate at the central circumferential seam of the lower head cannot be discharged in time, which easily leads to corrosion of the equipment and affects the safety and service life of the equipment.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a condensate drainage structure applied to a converter, including a lower head of the converter, a head center pipe connected to the center of the bottom of the lower head, and a discharge port opened on the lower head. The discharge port is located on one side of the head center pipe. The head center pipe extends downward through the lower head from inside the converter and out of the lower head. The discharge port is separate from the head center pipe. A discharge pipe extending outward and downward is connected to the discharge port. The discharge port is higher than the connecting circumferential seam between the head center pipe and the lower head. The characteristic feature is that a siphon pipe is connected inside the discharge pipe, and the middle of the siphon pipe has... There is a bend, with two ends of the bend being a first straight section extending outward along the discharge pipe and a second straight section extending from the discharge port to the connecting ring seam. The lower end of the first straight section is lower than the lower end of the second straight section. The bend is close to the side of the discharge port near the center pipe of the end cap. An end cap is provided at the outer end of the discharge pipe, and a guide port is provided on the end cap. An inner ring body that protrudes radially inward is provided inside the discharge pipe. An inner cap is sealed inside the inner ring body, and a storage cavity is formed between the inner cap and the end cap. A through hole is provided on the inner ring body, and the first straight section of the siphon tube extends into the storage cavity through the through hole. A detachable plug is connected to the guide port.

[0005] As a preferred embodiment, a groove is provided at the lowest point on the side of the discharge port near the center pipe of the end cap, and the bent part of the siphon tube is completely embedded in the groove. The groove is adapted to the bent part of the siphon tube, and the highest point of the bent part of the siphon tube is not higher than the lowest point of the discharge port.

[0006] As a preferred embodiment, a pressure relief valve communicating with the storage cavity is connected to the discharge pipe at the top of the storage cavity.

[0007] As a preferred embodiment, a filter screen is provided at the free end of the second straight section of the siphon tube.

[0008] The beneficial effects of this invention are as follows: By rationally designing the siphon pipe, condensate can be discharged when the converter furnace is shut down, preventing the condensate from corroding the equipment and thus improving equipment safety. The siphon pipe utilizes the liquid level difference between its upper and lower ends for drainage, eliminating the need for manual operation and reducing the risk to personnel. The siphon pipe promptly discharges residual condensate, allowing for the timely treatment of harmful substances carried by the condensate, thus more effectively meeting environmental and safety requirements. Attached Figure Description

[0009] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0010] Figure 1 This is a schematic diagram of the condensate drainage structure described in this utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the siphon tube described in this utility model;

[0012] Figure 3 This is an exploded view of the siphon tube and discharge tube interlocking structure described in this utility model;

[0013] Figure 4 This is a schematic diagram of the connection structure of the hose described in this utility model;

[0014] Figures 1-4 In the middle section: 1. Lower end cap; 2. End cap center connector; 3. Discharge port; 4. Discharge pipe; 5. Connecting ring seam; 6. Siphon pipe; 601. Bending section; 602. First straight section; 603. Second straight section; 7. End cap; 8. Guide port; 9. Groove; 10. Through hole; 11. Pressure relief valve; 12. Plug; 13. Filter screen; 14. Inner ring; 15. Inner cover; 16. Storage chamber. Detailed Implementation

[0015] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0016] like Figures 1-4The condensate drainage structure for a converter furnace shown includes a lower head 1, a head center pipe 2 connected to the center of the bottom of the lower head 1, and a discharge port 3 opened on the lower head 1. The discharge port 3 is located on one side of the head center pipe 2. The head center pipe 2 extends downward through the lower head 1 from inside the converter furnace and extends out of the lower head 1. The discharge port 3 is separate from the head center pipe 2. A discharge pipe 4 extending outward and downward is connected to the discharge port 3. The discharge port 3 is higher than the connecting annular seam 5 between the head center pipe 2 and the lower head 1. The characteristic feature is that a siphon pipe 6 is connected inside the discharge pipe 4. The siphon pipe 6 has a bend 601 in the middle. The two ends of the bend 601 are respectively the first two bends extending outward along the discharge pipe 4. The first straight section 602 and the second straight section 603 extending from the discharge port 3 to the connecting annular seam 5 are connected. The lower end of the first straight section 602 is lower than the lower end of the second straight section 603. The bent part 601 is close to the side of the discharge port 3 near the center of the end cap 2. An end cap 7 is provided at the outer end of the discharge pipe 4. A guide port 8 is provided on the end cap 7. An inner ring body 14 with radial inward protrusion is provided inside the discharge pipe 4. An inner cover 15 is sealed and connected inside the inner ring body 14. A storage cavity 16 is formed between the inner cover 15 and the end cap 7. A through hole 10 is provided on the inner ring body 14. The first straight section 602 of the siphon pipe 6 extends through the through hole 10 into the storage cavity 16 and approaches the end cap 7. A detachable plug 12 is connected to the guide port 8.

[0017] The discharge port 3 is a channel for discharging the catalyst. Since no furnace gas can be discharged through the discharge port 3, an inner cover 15 and an end cover 7 are provided to form a storage cavity 16 to prevent furnace gas from overflowing.

[0018] When the converter is working, the storage chamber 16 needs to be filled with pre-stored liquid. The pre-stored liquid must at least cover the lower end of the first straight section 602 of the siphon pipe 6 and be higher than it, so that the pre-stored liquid can flow back to the second straight section 603 through the first straight section 602.

[0019] When the converter is working normally, the high pressure inside the furnace will force some of the gas into the storage chamber 16 until the gas pressure inside the storage chamber 16 is equal to the gas pressure inside the furnace. At this time, due to the high temperature inside the furnace, there is no condensate, and the pre-stored liquid in the storage chamber 16 will not flow back into the furnace.

[0020] When the converter is shut down, the temperature inside the furnace drops, and condensate is generated. The condensate will accumulate at the connecting ring seam 5 and submerge the lower end of the second straight section 603 of the siphon tube 6. At the same time, the pressure inside the furnace drops. At this time, the gas pressure in the storage chamber 16 is higher than the gas pressure inside the furnace, causing the pre-stored liquid in the storage chamber 16 to flow back into the furnace, so that the siphon tube 6 is filled with the pre-stored liquid.

[0021] Once the furnace temperature drops to room temperature and the condensation process ends, the user simply needs to open plug 12 to drain the pre-stored liquid, which will simultaneously drain the liquid in siphon tube 6. Siphon tube 6 then uses siphon action to drain the condensate from the connecting annular seam 5. During the draining process, the gas in storage chamber 16 will not overflow until the liquid in storage chamber 16 is emptied. As long as the guide port 8 is closed in time, the gas in storage chamber 16 will either return to the furnace through siphon tube 6 or remain stored in storage chamber 16.

[0022] The very small amount of residual liquid that may remain at the 5th joint of the connecting ring will evaporate in a short time and will not cause corrosion to the equipment. This residue can be ignored.

[0023] like Figure 3 As shown, a groove 9 is provided at the lowest point on the side of the discharge port 3 near the center connecting pipe 2 of the end cap. The bent portion 601 of the siphon tube 6 is completely embedded in the groove 9. The groove 9 and the bent portion 601 of the siphon tube 6 are adapted to each other. The highest point of the bent portion 601 of the siphon tube 6 is not higher than the lowest point of the discharge port 3. The gap formed between the groove 9 and the siphon tube 6 is sealed by welding. In this way, the condensate can be actively discharged along the siphon tube 6 when the liquid level reaches the lower edge of the discharge port 3. Automatic liquid discharge can be achieved when the gas pressure inside and outside the furnace is balanced. However, this liquid discharge method has limitations. Sufficient condensate is required to trigger automatic liquid discharge.

[0024] In this embodiment, a pressure relief valve 18 communicating with the storage cavity 16 is preferably connected to the discharge pipe 4 at the top of the storage cavity 16. The function of the pressure relief valve 18 is to inject pre-stored liquid into the storage cavity 16, and it can also be opened during liquid discharge to increase the discharge speed.

[0025] In this embodiment, a filter screen 13 is preferably provided at the free end of the second straight section 603 of the siphon tube 6 to prevent the catalyst from entering the siphon tube 6 and causing blockage.

[0026] Combination Figures 1-4 The condensate drainage method for the converter furnace described in this embodiment includes the following specific steps:

[0027] a. Before starting the converter, close the inner cover 15 and the end cover 7, inject the pre-stored liquid into the storage chamber 16 through the guide port 8 or the pressure relief valve 11, then close the guide port 8 with the plug 12, inject the catalyst into the catalytic chamber of the converter, and then start the converter.

[0028] b. When the converter needs to be shut down, wait for the converter temperature to drop to room temperature, open the plug 12, and drain the liquid in the storage chamber 16. At this time, as the liquid is drained, the siphon pipe 6 will also draw the condensate at the connecting ring seam 5 into the storage chamber 16 and discharge it through the guide port 8.

[0029] As a preferred option, in step b, after opening the plug 12, the pressure relief valve 11 can be opened to improve the drainage efficiency.

[0030] The amount of pre-stored liquid added should be 1 to 2 times the total amount of condensate that can be stored around the connecting ring seam 5. The amount of pre-stored liquid exceeding the first straight section 602 should not be less than the amount of condensate that can be stored around the connecting ring seam 5. This ensures that there is liquid in the siphon tube 6 when the pre-stored liquid flows back upward.

[0031] Another drainage method avoids injecting pre-stored liquid into storage chamber 16. However, after the converter furnace cools, a negative pressure device is used to evacuate the storage chamber, creating a negative pressure. This pressure inside the furnace forces the condensate out through siphon pipe 6. Once condensate flows out of siphon pipe 6, the negative pressure device is stopped, and siphon pipe 6 continues to drain the condensate under its own suction. The negative pressure device preferentially draws condensate through pressure relief valve 11. This method requires a negative pressure device and is relatively cumbersome to operate.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A condensate draining structure for a converter, comprising a lower head (1) of the converter, a head center pipe (2) connected to the center of the bottom of the lower head (1), and a discharge port (3) opened on the lower head (1), the discharge port (3) being located on one side of the head center pipe (2), the head center pipe (2) extending downward through the lower head (1) from inside the converter and extending outward from the lower head (1), the discharge port (3) being separate from the head center pipe (2), and a discharge pipe (4) extending outward and downward connected to the discharge port (3), the discharge port (3) being higher than the connecting circumferential seam (5) between the head center pipe (2) and the lower head (1), characterized in that, A siphon tube (6) is connected inside the discharge pipe (4). The siphon tube (6) has a bend (601) in the middle. The two ends of the bend (601) are a first straight section (602) extending outward along the discharge pipe (4) and a second straight section (603) extending from the discharge port (3) to the connecting ring seam (5). The lower end of the first straight section (602) is lower than the lower end of the second straight section (603). The bend (601) is close to the side of the discharge port (3) near the center pipe (2) of the end cap. The outer end of the discharge pipe (4) is provided with An end cap (7) is provided, and a flow guide (8) is provided on the end cap (7). A radially inwardly protruding inner ring (14) is provided inside the discharge pipe (4). An inner cover (15) is sealed inside the inner ring (14). A storage cavity (16) is formed between the inner cover (15) and the end cap (7). A through hole (10) is provided on the inner ring (14). The first straight section (602) of the siphon pipe (6) extends through the through hole (10) into the storage cavity (16). A detachable plug (12) is connected to the flow guide (8).

2. The condensate draining structure for a converter according to claim 1, characterized in that, A groove (9) is provided at the lowest point on the side of the discharge port (3) near the center pipe (2) of the end cap. The bent part (601) of the siphon tube (6) is completely embedded in the groove (9). The groove (9) is adapted to the bent part (601) of the siphon tube (6). The highest point of the bent part (601) of the siphon tube (6) is not higher than the lowest point of the discharge port (3).

3. The condensate drainage structure for a converter according to claim 2, characterized in that, A pressure relief valve (18) is connected to the discharge pipe (4) at the top of the storage chamber (16) and communicates with the storage chamber (16).

4. The condensate draining structure for a converter according to any one of claims 1 to 3, characterized in that, A filter screen (13) is provided at the free end of the second straight section (603) of the siphon tube (6).

Images