Annular high-level water tank of chimney

Abstract

The utility model relates to an annular high-level water tank for a chimney. The annular high-level water tank comprises an annular water tank and an annular platform bracket, the platform support is used for surrounding and being installed on the outer side wall of a chimney, and the annular water tank can surround the periphery of the chimney and be installed on the top of the platform support. An upper annular platform is further installed on the top of the annular water tank, an annular people passing channel is installed on the inner side of the top of the upper annular platform, and an inlet and an outlet are formed in the side portion of the people passing channel. A manhole capable of being communicated with the interior of the annular water tank is formed in the upper annular platform, a manhole cover plate is installed at the manhole, and the annular water tank, the platform support, the upper annular platform, the man passing channel and the manhole cover plate are all of a steel structure. The device can effectively solve the problem that a newly-built high-level water tank or a safety water tower is limited by occupied area and investment, and is small in occupied area, low in cost and light in weight.

Description

Technical Field

[0001] The utility model relates to the field of blast furnaces, in particular to a chimney annular high-level water tank. Background Art

[0002] In order to ensure that the blast furnace does not burn out in the event of a power outage, it is absolutely necessary to set up a safe water supply system for the blast furnace. The "Design Specifications for Blast Furnace Ironmaking Engineering" GB50427-2015 requires that the water supply of the blast furnace cooling water system must be safe and reliable, and water must not be cut off. The safe water supply system should use a diesel pump unit to supply water, and the safe water supply should be 50% to 70% of the normal water supply. Industrial water-cooled blast furnaces should be equipped with high-level water pools or high-level water towers, and the safe water supply time of the high-level water tower should be 5min to 10min. When using an emergency diesel engine pump unit to supply water, the start-up time of the diesel engine pump should not exceed 10s.

[0003] In recent years, new or major renovation of furnaces with a capacity of 1000m 3 Blast furnaces above the grade 1 have successively adopted blast furnace closed-circuit circulating water systems, and have been put into production and run well. Some enterprises have also included the cooling of the tuyere small sleeve in the joint closed circulation system, and designed it to be a string to the top. In theory, this method has good water quality, can extend the service life of the tuyere small sleeve, has low energy consumption, and the amount of water replenishment is also small. However, in actual operation, when the tuyere is damaged, it must be switched to high-pressure industrial water to avoid a large amount of soft water being wasted. Therefore, when designing the factory, two sets of cooling water systems are generally set for the tuyere small sleeve, and the process layout is complicated; in addition, in the joint closed-circuit system, the inlet and outlet water temperature rise of the tuyere small sleeve will increase, affecting the cooling effect. Therefore, in actual factory design, the tuyere small sleeve is often cooled by open-circuit high-pressure industrial water. Therefore, a high-level water pool or a high-level water tower is required for part of the industrial water cooling part, and the safe water supply time of the high-level water tower should be 5min to 10min.

[0004] In the design of blast furnace plants of steel enterprises, safe water supply is often achieved by pouring concrete on site to build new high-level water tanks or safety water towers. However, with the development of steel enterprises, the construction of new high-level water tanks or safety water towers is subject to land occupation and investment restrictions. Utility Model Content

[0005] The utility model aims to provide a chimney annular high-level water tank, which can effectively solve the problem that new high-level water tanks or safety water towers are subject to land occupation and investment restrictions, and has a small footprint, low cost and light weight.

[0006] The purpose of the utility model is achieved in this way. A chimney annular high-level water tank comprises an annular water tank and an annular platform bracket; the platform bracket is used to surround and be installed on the outer side wall of the chimney, and the annular water tank can surround the outer periphery of the chimney and be installed on the top of the platform bracket; an upper annular platform is also installed on the top of the annular water tank, an annular walking passage is installed on the inner side of the top of the upper annular platform, and an inlet and outlet are opened on the side of the walking passage; an inspection hole that can be connected with the interior of the annular water tank is opened on the upper annular platform, and an inspection cover is installed at the inspection hole, and the annular water tank, the platform bracket, the upper annular platform, the walking passage and the inspection cover are all made of steel structures.

[0007] In a preferred embodiment of the utility model, the chimney is a concrete structure, and a plurality of embedded steel plates are embedded in the outer wall of the chimney. The platform bracket includes a lower annular platform and a plurality of diagonal braces. The inner side of the lower annular platform is welded to the corresponding embedded steel plates, the outer ends of the diagonal braces are welded to the outer side of the bottom of the lower annular platform, and the inner ends of the diagonal braces are welded to the corresponding embedded steel plates; the bottom of the annular water tank is welded to the lower annular platform through the base.

[0008] In a preferred embodiment of the utility model, an opening is provided on the upper annular platform and outside the walkway, the opening is arranged close to the entrance and exit of the walkway, and a steel staircase is provided between the opening and the lower annular platform.

[0009] In a preferred embodiment of the present invention, a manhole for walking on the platform is opened on the lower annular platform, and a steel staircase is arranged close to the manhole for walking on the platform.

[0010] In a preferred embodiment of the present invention, an annular lower platform railing is provided on the top periphery of the lower annular platform, and an annular upper platform railing is provided on the top periphery of the upper annular platform.

[0011] In a preferred embodiment of the utility model, the chimney annular high-level water tank also includes a water supply pipe and a ventilation pipe, one end of the water supply pipe is connected to the top of the annular water tank, and the other end is connected to the first joint; one end of the ventilation pipe is connected to the top of the annular water tank, and the other end is connected to the atmosphere.

[0012] In a preferred embodiment of the utility model, a liquid level meter is provided in the annular water tank, a water supply electric valve is provided on the water supply pipe, and the chimney annular high-level water tank also includes a controller, which is electrically connected to the liquid level meter and the water supply electric valve.

[0013] In a preferred embodiment of the utility model, the chimney annular high-level water tank also includes an overflow pipe, one end of the overflow pipe is connected to the top of the annular water tank, and the other end is connected to the second joint.

[0014] In a preferred embodiment of the utility model, the chimney annular high-level water tank also includes a drain pipe, one end of which is connected to the bottom of the annular water tank, and the other end is connected to the middle of the overflow pipe.

[0015] In a preferred embodiment of the present invention, the cross section of the annular water tank is circular, and a steam heating pipe is spirally arranged on the outer side wall of the annular water tank.

[0016] As described above, the chimney annular high-level water tank in the utility model is mainly used for safe water supply in the blast furnace project of the steel enterprise. The annular water tank is set up by utilizing the height of the existing chimney building, which meets the height requirement of the high-level water tank in the design of the blast furnace plant of the steel enterprise, and the chimney height can be used to provide the pressure required for safe water supply. Compared with the existing concrete newly built high-level water tank or safety water tower, an annular water tank is set up on the chimney, and the annular water tank, platform bracket, upper annular platform, walkway and inspection cover are all steel structures, which do not need to be formed by cast-in-place concrete on site, occupy a smaller area, have lower cost, and are lighter overall, which can greatly save land and investment, and effectively solve the problem that the new high-level water tank or safety water tower is limited by land and investment. A circular walkway is set up above the annular water tank, which can facilitate the maintenance personnel to inspect the annular water tank, and the operation is safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0018] Figure 1 : A plan view showing that the chimney annular high-position water tank provided by the utility model is installed behind the chimney.

[0019] Figure 2 :for Figure 1 Cross-section along AA.

[0020] Figure 3 : An enlarged view of the coordination between the annular water tank, the water supply pipe and the overflow pipe.

[0021] Description of Figure Numbers:

[0022] 1. Chimney;

[0023] 2. Platform support; 21. Lower annular platform; 211. Manhole for walking on the platform; 22. Diagonal brace; 23. Lower platform railing;

[0024] 3. Annular water tank; 31. Base;

[0025] 4. Upper circular platform; 41. Inspection hole; 42. Upper platform railing;

[0026] 5. Walkway;

[0027] 6. Steel stairs;

[0028] 71. water supply pipe; 711. first joint; 72. ventilation pipe; 73. overflow pipe; 74. drain pipe; 75. steam tracing pipe;

[0029] 8. Liquid level meter. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0031] like Figures 1 to 3 As shown, the present embodiment provides a chimney annular high-level water tank, comprising an annular water tank 3 and an annular platform bracket 2; the platform bracket 2 is used to surround and be installed on the outer wall of the chimney 1, and the annular water tank 3 can surround the outer periphery of the chimney 1 and be installed on the top of the platform bracket 2; an upper annular platform 4 is also installed on the top of the annular water tank 3, and an annular walking passage 5 is installed on the inner side of the top of the upper annular platform 4, and an inlet and outlet are opened on the side of the walking passage 5; an inspection hole 41 that can be connected with the interior of the annular water tank 3 is opened on the upper annular platform 4, and an inspection cover is installed at the inspection hole 41, and the annular water tank 3, the platform bracket 2, the upper annular platform 4, the walking passage 5 and the inspection cover are all made of steel structures.

[0032] The chimney 1 here can be a blast furnace hot blast furnace chimney or a blast furnace water-washed slag granulation tower chimney. The high-level water pool or high-level water tower required for the blast furnace with general industrial water cooling should be located at a height of more than 20-40m above the ground. In this embodiment, the installation position of the annular water tank 3 is located at a height position above 20m of the chimney height, preferably at a height position above 40m of the chimney height to ensure its position height. The structure of the chimney 1 is an existing structure, which is an existing building. The chimney 1 will be provided with a chimney staircase spirally wrapped around its outer wall. The walkway 5 is closed except for the import and export positions, and is protected on all four sides for maintenance personnel to pass through. When the annular water tank 3 needs to be repaired, the maintenance personnel can go to the platform bracket 2 via the chimney stairs, and after going up to the upper annular platform 4, enter the walkway 5 through the import and export, and then enter the annular water tank 3 through the inspection hole 41 to perform corresponding maintenance operations.

[0033] Therefore, the chimney annular high-level water tank in this embodiment is mainly used for safe water supply in the blast furnace project of the steel enterprise. The annular water tank 3 is set by utilizing the height of the existing chimney building, which meets the height requirement of the high-level water tank in the design of the blast furnace plant of the steel enterprise, and the chimney height can be used to provide the pressure required for safe water supply. Compared with the existing concrete newly built high-level water tank or safety water tower, an annular water tank 3 is set on the chimney 1, and the annular water tank 3, platform bracket 2, upper annular platform 4, walkway 5 and inspection cover are all steel structures, which do not need to be formed by cast-in-place concrete on site, occupy a smaller area, have lower cost, and are lighter overall, which can greatly save land and investment, and effectively solve the problem that the newly built high-level water tank or safety water tower is limited by land and investment. A circular walkway 5 is set above the annular water tank 3, which can facilitate the maintenance personnel to inspect the annular water tank 3, and the operation is safe.

[0034] In the specific implementation, in order to facilitate the connection and fixation between the platform bracket 2 and the chimney 1, refer to Figure 2 The chimney 1 is a concrete structure, and a plurality of embedded steel plates are embedded in the outer wall of the chimney 1. The platform bracket 2 includes a lower annular platform 21 and a plurality of diagonal braces 22. The inner side of the lower annular platform 21 is welded to the corresponding embedded steel plates, the outer ends of the diagonal braces 22 are welded to the outer side of the bottom of the lower annular platform 21, and the inner ends of the diagonal braces 22 are welded to the corresponding embedded steel plates; the bottom of the annular water tank 3 is welded to the lower annular platform 21 through a base 31.

[0035] When the chimney 1 is cast, the embedded steel plates are embedded in the outer wall of the chimney 1 in advance. When the platform bracket 2 is installed, the lower annular platform 21 and the diagonal brace 22 are welded to the corresponding embedded steel plates. The construction is simple and the connection is reliable.

[0036] In order to facilitate maintenance personnel to go from the platform support 2 to the upper annular platform 4, an opening is opened on the upper annular platform 4 and located on the outside of the walkway 5. The opening is arranged close to the entrance and exit of the walkway 5, and a steel staircase 6 is provided between the opening and the lower annular platform 21.

[0037] In order to facilitate maintenance personnel to go up to the platform support 2 from the chimney stairs, a manhole 211 for walking onto the platform is opened on the lower annular platform 21, and the steel staircase 6 is arranged close to the manhole 211 for walking onto the platform.

[0038] In this way, the maintenance personnel go up to the lower annular platform 21 through the top of the chimney stairs, through the walking platform manhole 211, go up to the upper annular platform 4 along the steel stairs 6, and then enter the walking passage 5 through the entrance and exit.

[0039] In order to improve safety, an annular lower platform railing 23 is provided on the top periphery of the lower annular platform 21 , and an annular upper platform railing 42 is provided on the top periphery of the upper annular platform 4 .

[0040] Further, see Figure 1 and Figure 3 The chimney annular high-level water tank also includes a water supply pipe 71 and a ventilation pipe 72. One end of the water supply pipe 71 is connected to the top of the annular water tank 3, and the other end is connected to the first joint 711; one end of the ventilation pipe 72 is connected to the top of the annular water tank 3, and the other end is connected to the atmosphere.

[0041] When in use, the first joint 711 is connected to a water storage device capable of replenishing water in the steel enterprise's plant area, so as to replenish water when the water in the annular water tank 3 is insufficient. The vent pipe 72 can be, for example, a curved pipe structure, which is connected to the outside atmosphere, and can prevent the water in the annular water tank 3 from deteriorating.

[0042] In order to facilitate automatic water replenishment, a liquid level meter 8 is provided in the annular water tank 3, and a water replenishment electric valve is provided on the water replenishment pipe 71. The chimney annular high-level water tank also includes a controller, and the controller is electrically connected to the liquid level meter 8 and the water replenishment electric valve. The liquid level meter 8 can be, for example, a radar liquid level meter, and the controller can control the water replenishment electric valve to open when the liquid level detected by the liquid level meter 8 is lower than a preset value, so as to replenish water in time.

[0043] Furthermore, the chimney annular high-level water tank also includes an overflow pipe 73, one end of the overflow pipe 73 is connected to the top of the annular water tank 3, and the other end is connected to a second joint.

[0044] The water supply pipe 71 and the overflow pipe 73 are both located at the top of the annular water tank 3, and the highest point of the pipe should be a certain distance higher than the top of the annular water tank 3, for example, 400mm. The overflow pipe 73 is mainly used as a safety measure. When an error occurs during water supply or operation, resulting in more water in the annular water tank 3, the excess water can be overflowed in time through the overflow pipe 73 to ensure safety. The above-mentioned first joint 711 and the second joint can adopt soft joints to facilitate the installation and disassembly of the pipeline. The number of ventilation pipes 72 can be arranged as two, and the highest point of the ventilation pipe 72 is a certain distance higher than the top of the annular water tank 3, for example, 800mm.

[0045] Furthermore, the chimney annular high-level water tank also includes a drain pipe 74, one end of which is connected to the bottom of the annular water tank 3, and the other end is connected to the middle of the overflow pipe 73. When it is necessary to clean the annular water tank 3, the drain pipe 74 can be used to drain the water in the annular water tank 3.

[0046] According to the different application environments of the whole chimney annular high-level water tank, when the ambient temperature is low, a steam tracing pipe 75 can be spirally arranged around the outer wall of the annular water tank 3. The annular water tank 3 is kept warm by steam to ensure that it does not freeze in winter.

[0047] Since the cross section of the chimney 1 is generally circular, the cross section of the annular water tank 3 in this embodiment is also circular.

[0048] The dimensions of the above components can be designed according to actual needs. For example, in this embodiment, the annular water tank 3 is installed at a chimney height of 41.6m, that is, the distance between the bottom surface of the annular water tank 3 and the bottom surface is 41.6m. The diameter of the annular water tank 3 is 2400mm, and the safe water storage capacity is 150m 3 , which can ensure the safe water supply time of the air outlet small set for about 10 minutes, and the water supply pressure is about 0.4Mpa. The cross-section of the walkway 5 is rectangular, and its net width is 1200mm; DN100 water supply pipe 71, DN300 overflow pipe 73, DN500 drain pipe 74, DN300 ventilation pipe 72, DN15 steam tracing pipe 75. Make an integral clamp near the chimney height of 38m to prevent the pipeline from shaking. The inspection hole 41 can be a square hole, such as a 700mm x700mm square hole. The inspection hole 41 is surrounded by an annular enclosure with a height of 500mm, that is, 500mm higher than the top of the annular water tank 3, and the cover plate is installed at the top of the enclosure. The above-mentioned liquid level meter 8 is arranged at the inspection hole 41, and the liquid level signal is remotely transmitted and interlocked with the water supply electric valve.

[0049] The entire chimney ring-shaped high-level water tank saves space and does not need to set up a separate safety water tower; it saves investment and can be built together with chimney 1 to save civil engineering investment; the height of chimney 1 can be used to provide the required pressure.

[0050] The above is only an illustrative embodiment of the utility model, and is not intended to limit the scope of the utility model. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the utility model should fall within the scope of protection of the utility model.

Claims

1. A chimney annular high-level water tank, characterized in that: It includes an annular water tank and an annular platform support; The platform bracket is used to surround and be installed on the outer side wall of the chimney, and the annular water tank can surround the outer periphery of the chimney and be installed on the top of the platform bracket; an upper annular platform is also installed on the top of the annular water tank, and an annular walking passage is installed on the inner side of the top of the upper annular platform, and an inlet and outlet are opened on the side of the walking passage; an inspection hole that can communicate with the interior of the annular water tank is opened on the upper annular platform, and an inspection cover is installed at the inspection hole, and the annular water tank, the platform bracket, the upper annular platform, the walking passage and the inspection cover are all made of steel structures.

2. The chimney annular high-level water tank according to claim 1, characterized in that: The chimney is a concrete structure, and a plurality of embedded steel plates are embedded in the outer wall of the chimney. The platform bracket includes a lower annular platform and a plurality of diagonal braces. The inner side of the lower annular platform is welded to the corresponding embedded steel plates, the outer ends of the diagonal braces are welded to the outer side of the bottom of the lower annular platform, and the inner ends of the diagonal braces are welded to the corresponding embedded steel plates. The bottom of the annular water tank is welded to the lower annular platform through a base.

3. The chimney annular high-level water tank according to claim 2, characterized in that: An opening is provided on the upper annular platform and outside the pedestrian passage. The opening is arranged close to the entrance and exit of the pedestrian passage. A steel staircase is provided between the opening and the lower annular platform.

4. The chimney annular high-level water tank according to claim 3, characterized in that: A manhole for walking on the platform is provided on the lower annular platform, and the steel staircase is arranged close to the manhole for walking on the platform.

5. The chimney annular high-level water tank according to claim 2, characterized in that: An annular lower platform railing is provided on the top periphery of the lower annular platform, and an annular upper platform railing is provided on the top periphery of the upper annular platform.

6. The chimney annular high-level water tank according to claim 1, characterized in that: The chimney annular high-level water tank also includes a water supply pipe and a ventilation pipe, one end of the water supply pipe is connected to the top of the annular water tank, and the other end is connected to a first joint; one end of the ventilation pipe is connected to the top of the annular water tank, and the other end is connected to the atmosphere.

7. The chimney annular high-level water tank according to claim 6, characterized in that: A liquid level meter is arranged in the annular water tank, a water supply electric valve is arranged on the water supply pipe, and the chimney annular high-level water tank also includes a controller, and the controller is electrically connected to the liquid level meter and the water supply electric valve.

8. The chimney annular high-level water tank according to claim 1, characterized in that: The chimney annular high-level water tank also includes an overflow pipe, one end of which is connected to the top of the annular water tank, and the other end of which is connected to a second joint.

9. The chimney annular high-level water tank according to claim 8, characterized in that: The chimney annular high-level water tank also includes a drain pipe, one end of which is connected to the bottom of the annular water tank, and the other end of which is connected to the middle of the overflow pipe.

10. The chimney annular high-level water tank according to claim 1, characterized in that: The cross section of the annular water tank is circular, and a steam heating pipe is spirally arranged on the outer side wall of the annular water tank.

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