Degassing tank and expansion tank energy-saving device of cooling water system
By designing energy-saving devices for degassing tanks and expansion tanks, the problems of water vapor freezing and pipe scaling in the cooling water system of the hot blast stove of ironmaking blast furnace were solved, achieving the effect of energy saving and consumption reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LVLIANG JIANLONG IND CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-12
AI Technical Summary
In the cooling water system of the hot blast stove of ironmaking blast furnace, problems such as water vapor freezing in the degassing tank, scaling in the pipes, and nitrogen waste in the expansion tank lead to high energy consumption and increased production costs.
An energy-saving device for a cooling water system degassing tank and expansion tank was designed, including a degassing component, a rust removal component, and an expansion component. The degassing component prevents water vapor from freezing, the rust removal component removes scale and rust, and the expansion component uses a mixture of air and nitrogen for inflation, thereby reducing energy consumption and cost.
It effectively prevents water vapor from freezing and pipe scaling, reduces power consumption and nitrogen usage, and lowers production costs.
Smart Images
Figure CN224229547U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of design and engineering of cooling water for hot blast stoves in ironmaking blast furnaces, and in particular to an energy-saving device for a degassing tank and expansion tank in a cooling water system. Background Technology
[0002] Currently, under normal conditions, most blast furnace hot blast stoves in ironmaking employ a high-pressure soft water closed-loop cooling method for their hot blast valves, backflow shut-off valves, and mixed air shut-off valves. This cooling method requires two essential pieces of equipment: a degassing tank and an expansion tank. The degassing tank utilizes the basic physical principle that gas density is less than water density to maintain the fullness of the water flow in the entire system and ensure system continuity. The expansion tank, on the other hand, uses the volume released by the expansion and contraction of its internal air bladder to create a balance with the volume of the entire water system, compensating for the pressure of the cooling pump and maintaining the pressure fluctuations of the water system within a reasonable range. The expansion tank air bladder expands by filling it with pressurized nitrogen or pressurized air.
[0003] In existing technologies, firstly, the icing problem of water vapor discharge pipes in degassing tanks is a particularly challenging issue in winter. Water vapor, affected by low temperatures, freezes inside the exhaust valve and pipes, impacting transmission efficiency and increasing the risk of pipe rupture. Most methods to prevent pipe icing involve adding electric heating coils at icing-prone areas, but this increases energy consumption and is not an effective solution. Secondly, during long-term transmission, water vapor accumulates scale inside the pipes, further affecting transmission efficiency. Thirdly, the expansion tank contains an air bladder; continuously using nitrogen for inflation wastes nitrogen resources, increasing production costs.
[0004] Therefore, in the current environment, there is a need to design an energy-saving device for the degassing tank and expansion tank of the cooling water system to solve the technical problems mentioned in the background. Utility Model Content
[0005] This invention provides an energy-saving device for a degassing tank and expansion tank in a cooling water system to solve the technical problems mentioned in the background art.
[0006] This utility model provides an energy-saving device for a degassing tank and expansion tank in a cooling water system. The energy-saving device includes a degassing component for preventing pipe freezing, a rust removal component for removing scale and rust from the pipe, and an expansion component for mixing nitrogen with other gases and entering the gas chamber. The degassing component is placed vertically on the ground, the rust removal component is connected to the degassing component, and the expansion component is connected to the degassing component.
[0007] Optionally, the degassing assembly includes a degassing tank, an air compressor, a degassing pipe, a first valve, a branch pipe, a second valve, and a pipe plug. The degassing tank is placed vertically on the ground. The air compressor is connected to the degassing tank. One end of the degassing pipe is connected to the air compressor. The first valve is installed on the degassing pipe and is located on one side of the air compressor. The branch pipe is installed on the degassing pipe and is located at the bottom end of the degassing pipe. The second valve is installed on the branch pipe. The pipe plug is installed on the degassing pipe and is located at the top end of the degassing pipe.
[0008] Optionally, the degassing pipe is provided with an insulation layer on its outer surface.
[0009] Optionally, the rust removal assembly includes a base, a bottom plate, a threaded rod, multiple sliding rods, a sliding table, a top plate, a rust removal section for cleaning scale and rust inside the pipe, and a motor. The bottom plate is mounted on the base, one end of the threaded rod is connected to the bottom plate, the multiple sliding rods are respectively located on both sides of the threaded rod and are all mounted on the bottom plate, the sliding table is slidably disposed on the threaded rod and the multiple sliding rods, the top plate is mounted on the end of the threaded rod away from the bottom plate, the rust removal section is mounted on the top plate, the motor passes through the top plate, and the output end of the motor is connected to the threaded rod.
[0010] Optionally, the rust removal unit includes a traction plate, a storage box, a cleaning ring, a scraper, and multiple nozzles. The traction plate is installed on one side of the slide table and is in contact with the degassing assembly. The storage box is installed on the top of the top plate. The cleaning ring is slidably disposed on the degassing assembly. The scraper is installed at the bottom end of the cleaning ring. The multiple nozzles pass through the cleaning ring and are connected to the storage box.
[0011] Optionally, the surfaces of the traction plate and the cleaning ring are provided with a magnetic coating.
[0012] Optionally, the expansion assembly includes an expansion pipe, a drying section for quick disassembly, an expansion tank, a nitrogen tank, and a pressure relief pipe. The expansion pipe is installed on the degassing assembly. One end of the drying section is connected to the expansion pipe, and the other end is connected to the expansion tank. The nitrogen tank is connected to the expansion tank, and the pressure relief pipe is connected to the expansion tank.
[0013] Optionally, the drying section includes multiple fixing plates, multiple disassembly plates, fixing rods, and multiple filter screens. The multiple fixing plates are respectively installed on the expansion pipe and the expansion tank, the multiple disassembly plates are respectively installed between the expansion pipe and the expansion tank, the fixing rods pass through the multiple fixing plates and the multiple disassembly plates, and the multiple filter screens correspond one-to-one with the multiple disassembly plates and are installed on the disassembly plates.
[0014] The beneficial effects of this utility model are as follows:
[0015] This energy-saving device for a cooling water system degassing tank and expansion tank includes a degassing component to prevent pipe freezing, a rust-removing component to remove scale and rust from the pipes, and an expansion component to mix nitrogen with other gases before inflating the gasbag. The degassing component is placed vertically on the ground, and the rust-removing component and the expansion component are connected to each other. This energy-saving device for a cooling water system degassing tank and expansion tank prevents water vapor from freezing inside the pipes in winter by using the degassing component, while also solving the problem of energy consumption associated with traditional pipe freezing prevention methods. The rust-removing component works in conjunction with the degassing component to prevent scale buildup inside the pipes during long-term water vapor transport, thus preventing rust formation on the pipe walls. The expansion component works in conjunction with the degassing component to mix high-pressure air and high-pressure nitrogen before entering the expansion tank to inflate the gasbag, increasing energy efficiency and reducing production costs. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a first-view structural schematic diagram of an energy-saving device for a cooling water system degassing tank and expansion tank provided by this utility model;
[0018] Figure 2 This is a second-view structural schematic diagram of an energy-saving device for a degassing tank and expansion tank in a cooling water system provided by this utility model;
[0019] Figure 3 This is a third-view structural schematic diagram of an energy-saving device for a degassing tank and expansion tank in a cooling water system provided by this utility model;
[0020] Figure 4 This is a fourth-view structural schematic diagram of an energy-saving device for a cooling water system degassing tank and expansion tank provided by this utility model;
[0021] Figure 5 This is a fifth-view structural schematic diagram of an energy-saving device for a cooling water system degassing tank and expansion tank provided by this utility model;
[0022] Explanation of reference numerals in the attached drawings: 1. Degassing assembly; 11. Degassing tank; 12. Air compressor; 13. Degassing pipeline; 14. First valve; 15. Branch pipeline; 16. Second valve; 17. Pipeline plug; 2. Rust removal assembly; 21. Base; 22. Base plate; 23. Threaded rod; 24. Slide rod; 25. Slide table; 26. Top plate; 27. Rust removal section; 271. Traction plate; 272. Storage box; 273. Cleaning box; 274. Scraper; 275. Nozzle; 28. Motor; 3. Expansion assembly; 31. Expansion pipeline; 32. Drying section; 321. Fixing plate; 322. Disassembly plate; 323. Fixing rod; 324. Filter screen; 33. Expansion tank; 34. Nitrogen tank; 35. Pressure relief pipeline. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to the present utility model are shown in the drawings, not all of the structures. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0025] Please see Figures 1 to 5 The present invention provides an energy-saving device for a cooling water system degassing tank and expansion tank, comprising a degassing component 1, a rust removal component 2, and an expansion component 3;
[0026] The degassing component 1 is placed vertically on the ground, the rust removal component 2 is connected to the degassing component 1, and the expansion component 3 is connected to the degassing component 1.
[0027] Among them, the degassing component 1 treats the water vapor under high pressure before discharging it. As the water vapor is compressed into high-pressure gas, its own temperature will increase, which avoids the phenomenon of water vapor freezing in the pipeline when the temperature is low in winter, and thus also avoids the problem of power consumption of traditional anti-icing pipelines.
[0028] Meanwhile, during the long-term transportation of high-pressure water vapor, water vapor will form scale in the pipeline or cause rust on the inner wall of the pipeline. At this time, the rust removal component 2 is driven and slides in the pipeline to clean the inner wall of the pipeline.
[0029] Furthermore, the expansion component 3 and the degassing component 1 work together so that the expansion component 3 no longer uses nitrogen gas alone for filling, thereby reducing nitrogen gas consumption, which in turn reduces energy consumption and production costs.
[0030] In this embodiment, the degassing tank 11 is placed vertically on the ground, the air compressor 12 is connected to the degassing tank 11, one end of the degassing pipe 13 is connected to the air compressor 12, the first valve 14 is installed on the degassing pipe 13 and located on one side of the air compressor 12, the branch pipe 15 is installed on the degassing pipe 13 and located at the bottom end of the degassing pipe 13, the second valve 16 is installed on the branch pipe 15, and the pipe blocker 17 is installed on the degassing pipe 13 and located at the top end of the degassing pipe 13.
[0031] When the degassing component 1 starts working, the water vapor in the degassing tank 11 will be sucked in and compressed by the air compressor 12. After the water vapor passes through the air compressor 12, its temperature will increase significantly. At this time, the first valve 14 is opened so that the water vapor compressed by the air compressor 12 is discharged into the degassing pipe 13 for transmission.
[0032] Meanwhile, the branch pipe 15, the second valve 16 and the pipe plug 17 mainly work with the rust removal component 2 to remove rust and scale. When rust and scale need to be removed, the first valve 14 is closed, the second valve 16 and the pipe plug 17 are opened, and the rust removal component 2 is driven to discharge scale and rust from the branch pipe 15.
[0033] Furthermore, the pipe plug 17 is a valve-like device for controlling the flow within the pipe. Unlike the traditional valve installation method that connects the pipe to both ends, the pipe plug 17 is screwed onto the degassing pipe 13, thereby preventing the rust removal component 2 from being obstructed during movement.
[0034] In this embodiment, the outer layer of the degassing pipe 13 is provided with a heat insulation layer.
[0035] Although the temperature of the water vapor compressed by the air compressor 12 increases, it is still necessary to keep the water vapor in the degassing pipe 13 warm, so as to more effectively ensure the water vapor transmission efficiency.
[0036] In this embodiment, the base plate 22 is mounted on the base 21, one end of the threaded rod 23 is connected to the base plate 22, a plurality of sliding rods 24 are respectively located on both sides of the threaded rod 23 and are all mounted on the base plate 22, the slide table 25 is slidably disposed on the threaded rod 23 and the plurality of sliding rods 24, the top plate 26 is mounted on the end of the threaded rod 23 away from the base plate 22, the rust removal part 27 is mounted on the top plate 26, the motor 28 passes through the top plate 26, and the output end of the motor 28 is connected to the threaded rod 23.
[0037] Among them, the base 21 provides support and is responsible for providing a stable working environment for the rust removal component 2;
[0038] Simultaneously, when the rust removal component 2 starts working, the second valve 16 and the pipe blocker 17 are opened and the first valve 14 is closed. At this time, the motor 28 is energized and starts working. The motor 28 drives the threaded rod 23 to start rotating, thereby causing the slide table 25 to move on the threaded rod 23 and the slide bar 24. The rust removal part 27 moves with the slide table 25, thereby cleaning out the scale and rust in the cleaning and degassing pipe 13. The cleaned scale and rust are discharged through the branch pipe 15, thereby achieving the purpose of cleaning the pipe. After cleaning is completed, the second valve 16 is closed.
[0039] In this embodiment, the traction plate 271 is installed on one side of the slide table 25 and is in contact with the degassing component 1. The storage box 272 is installed on the top of the top plate 26. The cleaning ring 273 is slidably disposed on the degassing component 1. The scraper 274 is installed at the bottom of the cleaning ring 273. A plurality of nozzles 275 are inserted through the cleaning ring 273 and connected to the storage box 272.
[0040] The cleaning ring 273 inside the degassing pipe 13 is moved by the traction plate 271 outside the degassing pipe 13. During the movement, the rust remover in the storage tank 272 is sprayed onto the inner wall of the degassing pipe 13 through the nozzle 275. Then, as the cleaning ring 273 moves, the scraper 274 installed at its bottom scrapes off the inner wall of the pipe that has been sprayed with rust remover and moves the scale and rust to the branch pipe 15 for discharge from the equipment, thereby achieving the purpose of removing scale and rust and improving the water vapor transmission efficiency.
[0041] In this embodiment, the surfaces of the traction plate 271 and the cleaning ring 273 are provided with a magnetic coating.
[0042] The traction plate 271 is attached to the outer wall of the degassing pipe 13, and the cleaning ring 273 has two protrusions that are attached to the outer wall of the degassing pipe. The surfaces of the traction plate 271 and the cleaning ring 273 that are attached to the degassing pipe 13 are coated with a magnetic coating, so that the traction plate 271 moves together with the cleaning ring 273 by magnetic attraction, thereby achieving the purpose of cleaning the various areas of the degassing pipe 13 by the cleaning ring 273.
[0043] In this embodiment, the expansion pipe 31 is installed on the degassing assembly 1, one end of the drying section 32 is connected to the expansion pipe 31 and the other end is connected to the expansion tank 33, the nitrogen tank 34 is connected to the expansion tank 33, and the pressure relief pipe 35 is connected to the expansion tank 33.
[0044] In this process, since the air bladder inside the expansion tank 33 needs to be inflated, the water vapor compressed by the degassing component 1 contains a large amount of water vapor and cannot be directly inflated. Therefore, the water vapor needs to be dehumidified and dried. The water vapor first enters the expansion pipe 31, and then passes through the drying section 32 to dry the water vapor. After that, the valve at the nitrogen tank 34 is opened, allowing the dried water vapor and nitrogen in the nitrogen tank 34 to mix and enter the air bladder inside the expansion tank 33. When it is necessary to release the gas, the valve at the pressure relief pipe 35 is opened, and the gas is discharged through the pressure relief pipe 35, thereby reducing the amount of nitrogen used and lowering the production cost.
[0045] In this embodiment, multiple fixing plates 321 are respectively installed on the expansion pipe 31 and the expansion tank 33, multiple disassembly plates 322 are respectively installed between the expansion pipe 31 and the expansion tank 33, the fixing rod 323 passes through the multiple fixing plates 321 and the multiple disassembly plates 322, and multiple filter screens 324 correspond one-to-one with the multiple disassembly plates 322 and are installed on the disassembly plates 322.
[0046] Among them, the fixing plate 321 and the fixing rod 323 play a supporting role, providing a stable working environment for the drying section 32;
[0047] Meanwhile, when the drying section 2 is working for a long time, the desiccant in the filter screen 324 may absorb enough moisture but not enough moisture to absorb the remaining moisture. At this time, the filter screen 324 needs to be replaced. The desiccant in the filter screen 324 is replaced by manually pulling the disassembly plate 322, so as to avoid the phenomenon of poor drying effect caused by the filter screen 324 working for a long time.
[0048] Furthermore, the top of the disassembly plate 322 is provided with a latch for quick disassembly and assembly. During the disassembly and assembly process, simply pull or push to disengage or engage the latch of the disassembly plate 322 with the fixing rod 323, thereby achieving the purpose of quick disassembly and assembly of the disassembly plate 322.
[0049] In summary, the energy-saving device of the degassing tank and expansion tank of this cooling water system avoids the phenomenon of water vapor freezing inside the pipes in winter through the degassing component, and also solves the problem of power consumption in traditional anti-icing of pipes. By using the rust removal component 3 in conjunction with the degassing component 1, scale is prevented from forming inside the pipes during long-term transportation of water vapor, which would cause the inner wall of the pipes to rust. By using the expansion component 3 in conjunction with the degassing component 1, high-pressure air and high-pressure nitrogen are mixed and enter the expansion tank 33 to inflate the air bladder, which increases the energy utilization rate and reduces production costs.
[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An energy-saving device for a degassing tank and expansion tank in a cooling water system, characterized in that, include A degassing assembly for preventing pipes from freezing, the degassing assembly being placed vertically on the ground; A rust removal component for removing scale and rust from pipes, wherein the rust removal component is connected to the degassing component; An expansion assembly for mixing nitrogen with other gases before entering the airbag, the expansion assembly being connected to the degassing assembly.
2. The energy-saving device for a degassing tank and expansion tank in a cooling water system according to claim 1, characterized in that, The degassing assembly includes a degassing tank, an air compressor, a degassing pipe, a first valve, a branch pipe, a second valve, and a pipe plug. The degassing tank is placed vertically on the ground. The air compressor is connected to the degassing tank. One end of the degassing pipe is connected to the air compressor. The first valve is installed on the degassing pipe and is located on one side of the air compressor. The branch pipe is installed on the degassing pipe and is located at the bottom end of the degassing pipe. The second valve is installed on the branch pipe. The pipe plug is installed on the degassing pipe and is located at the top end of the degassing pipe.
3. The energy-saving device for a degassing tank and expansion tank in a cooling water system according to claim 2, characterized in that, The degassing pipe is provided with an insulation layer on the outside.
4. The energy-saving device for a degassing tank and expansion tank in a cooling water system according to claim 1, characterized in that, The rust removal assembly includes a base, a base plate, a threaded rod, multiple sliding rods, a sliding table, a top plate, a rust removal section for cleaning scale and rust inside pipes, and a motor. The base plate is mounted on the base, one end of the threaded rod is connected to the base plate, the multiple sliding rods are located on both sides of the threaded rod and are all mounted on the base plate, the sliding table is slidably disposed on the threaded rod and the multiple sliding rods, the top plate is mounted on the end of the threaded rod away from the base plate, the rust removal section is mounted on the top plate, the motor passes through the top plate, and the output end of the motor is connected to the threaded rod.
5. The energy-saving device for a degassing tank and expansion tank in a cooling water system according to claim 4, characterized in that, The rust removal unit includes a traction plate, a storage box, a cleaning ring, a scraper, and multiple nozzles. The traction plate is installed on one side of the slide table and is in contact with the degassing component. The storage box is installed on the top of the top plate. The cleaning ring is slidably disposed on the degassing component. The scraper is installed at the bottom end of the cleaning ring. The multiple nozzles pass through the cleaning ring and are connected to the storage box.
6. The energy-saving device for a degassing tank and expansion tank in a cooling water system according to claim 5, characterized in that, The surfaces of the traction plate and the cleaning ring are coated with a magnetic coating.
7. The energy-saving device for a degassing tank and expansion tank in a cooling water system according to claim 1, characterized in that, The expansion assembly includes an expansion pipe, a drying section for quick disassembly, an expansion tank, a nitrogen tank, and a pressure relief pipe. The expansion pipe is installed on the degassing assembly. One end of the drying section is connected to the expansion pipe, and the other end is connected to the expansion tank. The nitrogen tank is connected to the expansion tank, and the pressure relief pipe is connected to the expansion tank.
8. The energy-saving device for a degassing tank and expansion tank in a cooling water system according to claim 7, characterized in that, The drying section includes multiple fixed plates, multiple disassembly plates, fixed rods, and multiple filter screens. The multiple fixed plates are respectively installed on the expansion pipe and the expansion tank, and the multiple disassembly plates are respectively installed between the expansion pipe and the expansion tank. The fixed rods pass through the multiple fixed plates and the multiple disassembly plates, and the multiple filter screens correspond one-to-one with the multiple disassembly plates and are installed on the disassembly plates.