A direct cooling tower spray structure modification method and a spray structure use method

Abstract

The application discloses a direct cooling tower spray structure reforming method and a spray structure using method. The reforming method comprises the following steps: installing an inner tooth screw in a cylindrical structure at an upper portion of an installation pipe; removing a water delivery pipe and installing the installation pipe at the position of the water delivery pipe, so that a water inlet of the installation pipe is connected to a water outlet of a bottom wall of a water delivery ring pipe, and a lower end of the installation pipe extends into a direct cooling tower; installing an inspection channel on a top wall of the water delivery ring pipe, so that the inspection channel is located directly above the installation pipe; hoisting a spray pipe string from the inspection channel into the installation pipe, so that cleaning nozzles at a lower end of the spray pipe string extend out of the lower end of the installation pipe after passing through the inner tooth screw, and an upper end of the spray pipe string is detachably installed on the inner tooth screw; and closing the inspection channel. The application solves the problems of high cost or the need to stop production for cleaning of the cleaning nozzles in the prior art.

Description

Technical Field

[0001] This application belongs to the field of direct cooling tower technology, specifically relating to a method for modifying the spray structure of a direct cooling tower and a method for using the spray structure. Background Technology

[0002] In coking production units, the vast majority of coal tar is obtained through cleaning in a direct cooling tower. Currently, the most effective cleaning nozzle is the spiral nozzle, which is installed at the top of the direct cooling tower. The upper end of the water supply pipe of the cleaning nozzle passes through the top of the direct cooling tower and connects to the water supply ring pipe. The cleaning solution used to clean coal tar contains impurities and ammonium salts, which can cause blockages in the cleaning nozzle after prolonged use, thus affecting the cleaning effect and significantly reducing the coal tar yield.

[0003] Currently, nozzle cleaning is usually carried out during annual major maintenance or by hiring a professional cleaning team. However, hiring a professional cleaning team requires a high cost each time, resulting in high costs. In addition, cleaning during annual major maintenance requires stopping the operation of the coking production unit, which in turn affects normal production operations. Summary of the Invention

[0004] This application provides a method for modifying the spray structure of a direct cooling tower and a method for using the spray structure, which solves the problems in the prior art where cleaning the spray nozzles is costly or requires stopping production to clean them.

[0005] To achieve the above objectives, embodiments of the present invention provide a method for modifying the spray structure of a direct cooling tower, comprising the following steps:

[0006] An internal threaded cylindrical structure is installed in the upper part of the installation tube;

[0007] Remove the water supply pipe and install the installation pipe at the location of the water supply pipe, so that the inlet of the installation pipe is connected to the outlet of the bottom wall of the water supply ring pipe, and the lower end of the installation pipe extends into the direct cooling tower.

[0008] An inspection channel is installed on the top wall of the water conveyance ring pipe, with the inspection channel located directly above the installation pipe;

[0009] The spray pipe string is hoisted from the maintenance channel into the installation pipe, so that the cleaning nozzle at the lower end of the spray pipe string passes through the internal thread and extends out of the lower end of the installation pipe, and the upper end of the spray pipe string is detachably installed on the internal thread.

[0010] Close the maintenance access channel.

[0011] In one possible implementation, the outer wall of the internal thread is connected to the inner wall of the mounting tube, and the inner wall of the internal thread is provided with an internal thread.

[0012] The spray pipe string includes, from top to bottom, an internal hexagonal filler core, a water outlet pipe, and a cleaning nozzle, the upper end of which is detachably installed at the lower end of the water outlet pipe; the outer wall of the internal hexagonal filler core is provided with external threads.

[0013] The hexagonal filler core and the hexagonal filler core are connected by threads.

[0014] In one possible implementation, the inner wall of the hexagonal core is hexagonal, and a lifting ring is installed at the upper end of the hexagonal core.

[0015] In one possible implementation, the upper end of the internal hexagonal filler core is provided with a flange structure, and the lower end face of the flange structure abuts against the upper end face of the internal thread.

[0016] In one possible implementation, the maintenance access channel includes a flange and a plug;

[0017] The lower end of the flange pipe is connected to the inspection port on the top wall of the water conveying ring pipe, and the plug is detachably installed on the flange at the upper end of the flange pipe.

[0018] This invention also provides a method of using a direct cooling tower spray structure, which includes a direct cooling tower cleaning method.

[0019] The direct cooling tower cleaning method includes the following steps:

[0020] A certain pressure of cleaning fluid is introduced into the water supply loop through the main inlet pipe;

[0021] The cleaning fluid enters the installation pipe and then enters the spray pipe string through the internal hexagonal filler core;

[0022] The cleaning solution is then sprayed out through the cleaning nozzle to perform the cleaning operation.

[0023] In one possible implementation, a spray structure cleaning method is also included, which comprises the following steps:

[0024] Turn off the cleaning fluid injection pump and remove the plug.

[0025] Insert the hexagonal head at the lower end of the disassembly and assembly tool into the flange pipe, then through the water supply ring pipe and into the internal thread. Rotate the disassembly and assembly tool, which will cause the internal thread to rotate until the internal thread and the internal hexagonal filler core separate. Then pull out the disassembly and assembly tool.

[0026] Insert the hook at the lower end of the lifting device into the flange pipe, pass it through the water supply ring pipe, and hang it on the lifting ring. Use the lifting device to lift the sprinkler pipe string.

[0027] Clean the cleaning nozzles after removing them from the spray pipe string.

[0028] In one possible implementation, a spray pipe string installation method is also included; the spray pipe string installation method includes the following steps:

[0029] Install the cleaning nozzles onto the spray pipe string;

[0030] Hang the hook at the bottom of the lifting device on the lifting ring, then insert the hexagonal head at the bottom of the disassembly and assembly tool into the internal thread, and then fix the lifting device and the disassembly and assembly tool relative to each other;

[0031] Use a lifting device to hoist the spray pipe into the installation pipe, and fine-tune the position of the lifting device to make the internal hexagonal mandrel and the internal thread mesh.

[0032] Simultaneously rotate the lifting device and disassembly tools to screw the hexagonal filler into the internal thread. Then, disassemble the lifting device and use the disassembly tools to install the hexagonal filler into place.

[0033] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0034] This invention provides a method for modifying the spray structure of a direct-cooling tower and a method for using the spray structure. The invention utilizes an installation pipe as the installation cavity for the spray pipe string, which not only meets the sealing requirements of the pipeline but also facilitates the disassembly and assembly of the spray pipe string. A maintenance channel is provided at the top of the water supply ring pipe to meet the disassembly and assembly needs of the spray pipe string without affecting the function of the entire spray structure. This ingenious structural design solves a technical problem with a simple structure, making it easy to promote and use. The modification process of this invention is simple, low-cost, and easy to maintain, effectively meeting the cleaning needs of direct-cooling towers. The spray structure cleaning method of this invention can be performed without stopping the coking production unit, thus ensuring normal production operations. Therefore, it has good performance, is simple to operate, and highly practical. This invention allows for rapid disassembly and assembly using specially designed lifting tools and disassembly / assembly tools, thereby improving the cleaning efficiency of the cleaning nozzles. Simultaneously, the simple disassembly and assembly process greatly saves on the cleaning cost of the cleaning nozzles. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the direct cooling tower spray structure provided in an embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of the installation of the spray assembly provided in an embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of the internal hexagonal filler core provided in an embodiment of the present invention.

[0039] Figure 4 for Figure 3 Top view.

[0040] Figure 5 This is a schematic diagram of the internal thread structure provided in an embodiment of the present invention.

[0041] Attached reference numerals: 1-Water supply ring pipe; 2-Main water inlet pipe; 3-Spray assembly; 31-Installation pipe; 32-Maintenance passage; 33-Spray pipe string; 4-Direct cooling tower; 5-Internal thread; 6-Internal hexagonal filler core; 7-Water outlet pipe; 8-Cleaning nozzle; 9-Lifting ring; 10-Flanged structure; 11-Flanged pipe; 12-Plug. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0044] like Figures 1 to 5As shown in the embodiment of the present invention, the method for modifying the spray structure of a direct cooling tower includes a water conveying ring pipe 1, a main water inlet pipe 2, and spray components 3. Multiple spray components 3 are distributed around the circumference of the water conveying ring pipe 1, and the inlet of the water conveying ring pipe 1 is connected to the outlet of the main water inlet pipe 2.

[0045] The spray assembly 3 includes an installation pipe 31, a maintenance passage 32, and a spray pipe string 33. The inlet at the upper end of the installation pipe 31 is connected to the outlet at the bottom wall of the water supply ring pipe 1, and the lower end of the installation pipe 31 extends into the direct cooling tower 4. A cylindrical internal threaded thread 5 is installed inside the installation pipe 31, and the outer wall of the internal threaded thread 5 is connected to the inner wall of the installation pipe 31. The inner wall of the internal threaded thread 5 is provided with internal threads.

[0046] The spray pipe string 33 includes a cylindrical hexagonal bushing 6, a water outlet pipe 7, and a cleaning nozzle 8. The outer wall of the hexagonal bushing 6 has external threads. The water inlet at the upper end of the water outlet pipe 7 is connected to the lower end of the hexagonal bushing 6, and the cleaning nozzle 8 is detachably installed at the water outlet at the lower end of the water outlet pipe 7. The spray pipe string 33 passes through an internal thread 5, and the hexagonal bushing 6 is threaded into the internal thread 5.

[0047] The direct cooling tower spray structure modification method provided in this embodiment of the invention includes the following steps:

[0048] An internal thread 5 of a cylindrical structure is installed in the upper part of the installation tube 31.

[0049] Remove the water supply pipe and install the installation pipe 31 at the location of the water supply pipe, so that the inlet of the installation pipe 31 is connected to the outlet of the bottom wall of the water supply ring pipe 1, and the lower end of the installation pipe 31 extends into the direct cooling tower 4.

[0050] An inspection channel 32 is installed on the top wall of the water conveyance ring pipe 1, so that the inspection channel 32 is located directly above the installation pipe 31.

[0051] The spray pipe string 33 is hoisted from the maintenance channel 32 into the installation pipe 31, so that the cleaning nozzle 8 at the lower end of the spray pipe string 33 passes through the internal thread 5 and extends out of the lower end of the installation pipe 31, and the upper end of the spray pipe string 33 is detachably installed on the internal thread 5.

[0052] Close maintenance access 32.

[0053] It should be noted that the modification method of the present invention only describes the modification method of one spray assembly 3, and the modification method of other spray assemblies 3 is the same.

[0054] The original water supply pipe is equivalent to the outlet pipe 7 of the spray pipe string 33. To ensure the original cleaning effect, the inner diameter of the outlet pipe 7 is the same as that of the original water supply pipe. In this embodiment, the inner diameter of the installation pipe 31 is twice the outer diameter of the outlet pipe 7, which facilitates the disassembly and cleaning of the spray pipe string 33. The maintenance channel 32 facilitates the installation and disassembly of the spray pipe string 33. The modification process of this invention is simple, low-cost, and easy to maintain, and can well meet the cleaning needs of the direct cooling tower 4.

[0055] In this embodiment, the outer wall of the internal thread 5 is connected to the inner wall of the mounting tube 31, and the inner wall of the internal thread 5 is provided with an internal thread.

[0056] The spray pipe string 33 includes, from top to bottom, an internal hexagonal filler core 6, a water outlet pipe 7, and a cleaning nozzle 8. The upper end of the cleaning nozzle 8 is detachably installed at the lower end of the water outlet pipe 7. The outer wall of the internal hexagonal filler core 6 is provided with external threads.

[0057] The hexagonal filler core 6 and the hexagonal filler core 6 are connected by threads.

[0058] It should be noted that the hexagonal bushing 6 and the hexagonal bushing 6 are connected by threads, thus enabling the detachable installation of the spray pipe string 33. The threaded connection method has high reliability and good sealing performance.

[0059] In this embodiment, the inner wall of the hexagonal core 6 is hexagonal, and a lifting ring 9 is installed at the upper end of the hexagonal core 6.

[0060] It should be noted that the lifting ring 9 facilitates the lifting of the spray pipe string 33 by the operator. The inner wall of the hexagonal filler core 6 has a hexagonal structure, which facilitates disassembly by the operator using a hexagonal head. The inner wall of the hexagonal filler core 6 can also be provided with other structures that facilitate disassembly, such as slots.

[0061] In this embodiment, the upper end of the internal hexagonal filler core 6 is provided with a flange structure 10, and the lower end face of the flange structure 10 abuts against the upper end face of the internal thread 5.

[0062] It should be noted that the flanged structure 10 can improve the reliability of the spray pipe string 33 after installation and avoid the problem of excessive stress at the thread. A sealing ring can also be provided on the lower end face of the flanged structure 10.

[0063] In this embodiment, the maintenance passage 32 includes a flange pipe 11 and a plug 12.

[0064] The lower end of the flange pipe 11 is connected to the inspection port on the top wall of the water conveying ring pipe 1, and the plug 12 is detachably installed on the flange at the upper end of the flange pipe 11.

[0065] It should be noted that the cover 12 facilitates the opening and closing of the maintenance passage 32.

[0066] like Figures 1 to 5As shown, this embodiment of the invention also provides a method of using a direct cooling tower spray structure. The method of using the above-mentioned direct cooling tower spray structure includes a direct cooling tower cleaning method.

[0067] The cleaning method for direct cooling towers includes the following steps:

[0068] A certain pressure of cleaning fluid is introduced into the water supply ring pipe 1 through the main water inlet pipe 2.

[0069] The cleaning fluid enters the installation pipe 31 and then enters the spray pipe string 33 through the internal hexagonal filler core 6.

[0070] Then the cleaning solution is sprayed out through the cleaning nozzle 8 to perform the cleaning operation.

[0071] It should be noted that the cleaning fluid flow path of the present invention is similar to the original structure. The modification will not affect the spray flow rate of the cleaning fluid, thereby ensuring the normal operation of the system.

[0072] This embodiment also includes a spray structure cleaning method, which includes the following steps:

[0073] Turn off the cleaning fluid injection pump and remove plug 12.

[0074] Insert the hexagonal head at the lower end of the disassembly and assembly tool into the flange pipe 11, then through the water supply ring pipe 1 and into the internal thread 5. Rotate the disassembly and assembly tool, which will cause the internal thread 5 to rotate until the internal thread 5 and the internal hexagonal filler core 6 are separated. Then pull out the disassembly and assembly tool.

[0075] Insert the hook at the lower end of the lifting device into the flange pipe 11, then through the water supply ring pipe 1 and hang it on the lifting ring 9. Use the lifting device to lift the spray pipe string 33.

[0076] Clean the cleaning nozzle 8 after removing it from the spray pipe string 33.

[0077] It should be noted that when disassembling the spray pipe string 33, the change in the oxygen content of the coal gas in the coking production unit must be closely observed to ensure the smooth progress of the disassembly process. The spray structure cleaning method of the present invention can be carried out without stopping the coking production unit, thus ensuring the normal operation of production. Therefore, it has good results, is simple to operate, highly practical, and saves factory costs.

[0078] This invention utilizes the installation pipe 31 as the installation cavity, which not only meets the sealing requirements of the pipeline, but also facilitates the installation of the spray pipe string 33. By setting the maintenance channel 32 at the upper part of the water supply ring pipe 1, the disassembly and assembly requirements of the spray pipe string 33 can be met without affecting the function of the entire spray structure. This ingenious structural design solves the technical problem through a simple structure, and is therefore easy to promote and use.

[0079] This embodiment also includes a method for installing a sprinkler pipe string. The method for installing the sprinkler pipe string includes the following steps:

[0080] Install the cleaning nozzle 8 onto the spray pipe string 33.

[0081] Hang the hook at the bottom of the lifting device on the lifting ring 9, then insert the hexagonal head at the bottom of the disassembly tool into the internal thread 5, and then fix the lifting device and the disassembly tool relative to each other.

[0082] Use a lifting device to hoist the spray pipe string 33 into the installation pipe 31, and fine-tune the position of the lifting device to make the threads of the internal hexagonal filler core 6 and the internal thread 5 engage.

[0083] Simultaneously rotate the lifting device and disassembly tools to screw the hexagonal filler core 6 into the internal thread 5. Then, disassemble the lifting device and use the disassembly tools to install the hexagonal filler core 6 into place.

[0084] It should be noted that after installation, check the installation location to avoid air leaks.

[0085] This invention enables rapid assembly and disassembly using specially designed lifting tools and disassembly / assembly equipment, thereby improving the cleaning efficiency of the cleaning nozzle 8. At the same time, the assembly and disassembly process is simple and easy to operate, greatly saving the cleaning cost of the cleaning nozzle 8.

[0086] In this embodiment, it will be apparent 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 invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within the present invention.

Claims

1. A method for modifying the spray structure of a direct cooling tower, characterized in that, Includes the following steps: An internal thread (5) of a cylindrical structure is installed in the upper part of the installation tube (31); Remove the water supply pipe and install the installation pipe (31) at the location of the water supply pipe, so that the inlet of the installation pipe (31) is connected to the outlet of the bottom wall of the water supply ring pipe (1), and the lower end of the installation pipe (31) extends into the direct cooling tower (4). An inspection channel (32) is installed on the top wall of the water conveying ring pipe (1), such that the inspection channel (32) is located directly above the installation pipe (31); The spray pipe string (33) is hoisted from the maintenance channel (32) into the installation pipe (31), so that the cleaning nozzle (8) at the lower end of the spray pipe string (33) passes through the internal thread (5) and extends out of the lower end of the installation pipe (31), and the upper end of the spray pipe string (33) is detachably installed on the internal thread (5). The maintenance passage (32) is closed; the outer wall of the internal thread (5) is connected to the inner wall of the mounting tube (31), and the inner wall of the internal thread (5) is provided with an internal thread; The spray pipe string (33) includes an internal hexagonal filler core (6), a water outlet pipe (7), and a cleaning nozzle (8) arranged sequentially from top to bottom. The upper end of the cleaning nozzle (8) is detachably installed at the lower end of the water outlet pipe (7). The outer wall of the internal hexagonal filler core (6) is provided with external threads. The internal hexagonal filler core (6) and the internal thread (5) are connected by threads; the inner wall of the internal hexagonal filler core (6) is hexagonal, and a lifting ring (9) is installed at the upper end of the internal hexagonal filler core (6). The upper end of the internal hexagonal filler core (6) is provided with a flange structure (10), and the lower end face of the flange structure (10) abuts against the upper end face of the internal thread (5). The maintenance access channel (32) includes a flange pipe (11) and a plug (12); The lower end of the flange pipe (11) is connected to the inspection port on the top wall of the water conveying ring pipe (1), and the plug (12) is detachably installed on the flange at the upper end of the flange pipe (11).

2. A method of using a direct cooling tower spray structure, characterized in that, The direct cooling tower spray structure obtained by the direct cooling tower spray structure modification method as described in claim 1 includes a direct cooling tower cleaning method. The direct cooling tower cleaning method includes the following steps: A certain pressure of cleaning fluid is introduced into the water supply ring pipe (1) through the main water inlet pipe (2); The cleaning fluid enters the installation pipe (31) and then enters the spray pipe string (33) through the internal hexagonal filler core (6); Then the cleaning fluid is sprayed out through the cleaning nozzle (8) to achieve the cleaning operation.

3. The method of using the direct cooling tower spray structure according to claim 2, characterized in that: It also includes a spray structure cleaning method, which includes the following steps: Turn off the cleaning fluid injection pump and remove the plug (12). Insert the hexagonal head at the lower end of the disassembly tool into the flange pipe (11), then through the water supply ring pipe (1) and into the internal thread (5). Rotate the disassembly tool, which will cause the internal thread (5) to rotate until the internal thread (5) and the internal hexagonal filler core (6) are separated. Then pull out the disassembly tool. Insert the hook at the lower end of the lifting device into the flange pipe (11), then through the water supply ring pipe (1) and hang it on the lifting ring (9). Use the lifting device to lift the spray pipe string (33). Clean the cleaning nozzle (8) after removing it from the spray pipe string (33).

4. The method of using the direct cooling tower spray structure according to claim 3, characterized in that: It also includes a method for installing spray pipe strings; the method for installing spray pipe strings includes the following steps: Install the cleaning nozzle (8) onto the spray pipe string (33); Hang the hook at the bottom of the lifting device on the lifting ring (9), then insert the hexagonal head at the bottom of the disassembly and assembly tool into the internal thread (5), and then fix the lifting device and the disassembly and assembly tool relative to each other. Use a lifting tool to lift the sprinkler pipe string (33) into the installation pipe (31), and finely adjust the position of the lifting tool to make the internal hexagonal filler core (6) and the internal thread (5) mesh; Rotate the lifting device and disassembly tools simultaneously to screw the hexagonal filler core (6) into the internal thread (5), then disassemble the lifting device and use the disassembly tools to install the hexagonal filler core (6) into place.

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