Miniature water pump station system special for medium repair of blast furnace

Abstract

The invention relates to the technical field of blast furnaces, in particular to a miniature water pump station system special for medium repair of a blast furnace. The invention provides a miniature water pump station system special for medium repair of a blast furnace. The miniature water pump station system comprises a water storage tank, a cooling water inlet pipeline mechanism, a cooling water injection pipeline mechanism and a circulating water heat dissipation mechanism. The cooling water inlet pipeline mechanism comprises a water return bag, the water return bag is provided with at least one first connector pipe used for being communicated with a water outlet of a blast furnace cooling wall, at least one water supplementing pipe and at least one spraying pipe, and the end, away from the water return bag, of the water supplementing pipe is used for being connected with an external water source. The spraying pipe is located above the water storage tank and used for spraying water in the water return bag into the water storage tank. By means of the miniature water pump station system special for blast furnace medium repair, cooling water recycling is achieved, the needed water amount is small, water resources are saved, the system can be used without laying pipelines, and blast furnace medium repair construction is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of blast furnaces, and particularly to a special mini water pump station system for medium repairs of blast furnaces. Background Art

[0002] Medium repair of a blast furnace is an important maintenance project in the production process of a blast furnace. It aims to restore or improve the performance of the blast furnace by overhauling and maintaining some key equipment of the blast furnace to ensure its stable operation. Compared with a major repair of a blast furnace, the scale of a medium repair is smaller and the time is shorter. Medium repair of a blast furnace refers to the project of overhauling and maintaining some equipment and structures of the blast furnace after the blast furnace has been in production operation for a period of time. The main characteristics of a medium repair are: the refractory materials and cooling stave in the hearth area are not replaced. The hearth area is the most important part of the blast furnace, and the replacement of its refractory materials and cooling stave is usually carried out during a major repair. The scope of maintenance for a medium repair of a blast furnace is limited, and it mainly focuses on overhauling equipment such as the upper structure, cooling system, air supply system, and gas system of the blast furnace. It usually lasts for several days to several weeks.

[0003] Since the water pump house system of the blast furnace cannot supply water during the medium repair of the blast furnace due to the need for maintenance, at this time, it is also necessary to cool and protect the cooling stave and carbon bricks of the blast furnace in order to cool the residual molten iron in the furnace, and only after cooling can personnel enter the furnace for construction. The currently commonly used temporary cooling water supply system cools the cooling stave of the blast furnace through an external temporary water supply system. The specific steps are as follows: Prepare equipment such as temporary water pumps, water tanks, pipes, and hoses to ensure that their flow rate and pressure can meet the cooling requirements. Connect the temporary make-up water pipe to the water inlet of the cooling stave, ensure that the connection is firm and the seal is good, and the other end is connected to the water outlet of the temporary water pump. Use an external water source (such as fire water or industrial water) as the temporary water source and connect it to the water inlet of the temporary water pump. Turn on the temporary water pump to supply water to the cooling stave to ensure that the cooling water is evenly distributed. Monitor the temperature of the cooling stave and carbon bricks in real time to ensure that the cooling effect meets the requirements. After confirming that the temperature of the cooling stave and molten iron reaches the safety standard, personnel can enter the furnace for construction. After the medium repair is completed, restore the water supply system of the water pump house and remove the temporary equipment.

[0004] However, the above-mentioned temporary cooling water supply system cannot recycle water, resulting in a large waste of water resources, and it is necessary to lay pipes and connect equipment. The installation process is complex and time-consuming, affecting the construction of the medium repair of the blast furnace. Summary of the Invention

[0005] (1) The problem to be solved by the present invention is that the traditional temporary cooling water supply system cannot recycle water, resulting in a large waste of water resources, and it is necessary to lay pipes and connect equipment. The installation process is complex and time-consuming, affecting the construction of the medium repair of the blast furnace.

[0006] (2) Technical Solution

[0007] A special mini water pump station system for medium repair of blast furnaces, comprising a water storage tank, a cooling water inlet pipeline mechanism, a cooling water injection pipeline mechanism and a circulating water heat dissipation mechanism;

[0008] The cooling water inlet pipeline mechanism includes a return water header. At least one first joint pipe for communicating with the outlet of the blast furnace cooling stave, at least one make-up water pipe and at least one spray pipe are provided on the return water header. The end of the make-up water pipe away from the return water header is used to connect with an external water source. The spray pipe is located above the water storage tank and is used to spray the water in the return water header into the water storage tank;

[0009] The circulating water heat dissipation mechanism is used to dissipate heat from the water sprayed by the spray pipe;

[0010] One end of the cooling water injection pipeline mechanism is communicated with the water storage tank, and the other end is provided with at least one second joint pipe for communicating with the inlet of the blast furnace cooling stave, and is used to pump the water in the water storage tank into the inlet of the blast furnace cooling stave.

[0011] According to an embodiment of the present invention, the cooling water injection pipeline mechanism includes a water supply header and at least one water supply pump. The inlet end of the water supply pump is communicated with the water storage tank through a first pipeline, and the outlet end of the water supply pump is communicated with the water supply header through a second pipeline. At least one water pump inlet valve for controlling its on-off is installed on the first pipeline;

[0012] The second joint pipe is arranged on the water supply header.

[0013] According to an embodiment of the present invention, at least two water supply pumps are provided.

[0014] According to an embodiment of the present invention, the circulating water heat dissipation mechanism includes a bottom grid shelf, which is arranged between the water storage tank and the spray pipe, and industrial ice is placed on the bottom grid shelf.

[0015] According to an embodiment of the present invention, the circulating water heat dissipation mechanism includes at least one axial flow fan and a top grid shelf located above the spray pipe. The axial flow fan is installed on the top grid shelf and is used to dissipate heat from the circulating water sprayed by the spray pipe.

[0016] According to an embodiment of the present invention, at least one check valve and at least one exhaust valve are installed on the second pipeline.

[0017] According to an embodiment of the present invention, at least one water level gauge for measuring the internal water level is installed on the water storage tank.

[0018] According to an embodiment of the present invention, a plurality of the first connecting pipes are provided, and the plurality of the first connecting pipes are arranged along the axial direction of the return water header; a plurality of the second connecting pipes are provided, and the plurality of the second connecting pipes are arranged along the axial direction of the water supply header.

[0019] According to an embodiment of the present invention, it includes a master control box, and the water supply pump and the water pump inlet valve are respectively signal-connected to the master control box.

[0020] According to an embodiment of the present invention, at least one overflow pipe is provided on the water supply header, and at least one automatic overflow valve is provided on the overflow pipe.

[0021] Advantages of the present invention:

[0022] By using the special mini water pump station system for medium repair of blast furnaces of the present invention, the cooling stave and carbon bricks of the blast furnace can be cooled and protected, the temperature of the residual molten iron in the furnace is reduced, the service life of the cooling stave and refractory materials is extended, and at the same time, the safety accidents of the construction personnel during the medium repair of the blast furnace caused by the too high temperature of the molten iron water are avoided. By using the special mini water pump station system for medium repair of blast furnaces of the present invention, the recycling of cooling water is realized, the required water volume is small, water resources are saved, and it can be used without laying pipelines, without affecting the medium repair construction of the blast furnace. In addition, it has its own heat dissipation and temperature reduction function, which can quickly reduce the water temperature of the cooled water after heat exchange for recycling. Description of the drawings

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram provided by an embodiment of the present invention;

[0025] Figure 2 It is a top view provided by an embodiment of the present invention.

[0026] Reference numerals: 1, water storage tank; 2, water pump inlet valve; 3, water supply pump; 4, check valve; 5, water supply header; 6, water supply valve; 7, first quick connector; 8, automatic overflow valve; 9, return water header; 10, second quick connector; 11, spray pipe; 12, spray head; 13, top grid shelf; 14, bottom grid shelf; 15, anti-swirl device; 16, water level gauge; 17, electric make-up water valve; 18, exhaust valve; 19, baffle plate. Detailed embodiments

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figure 1 - Figure 2 shown, an embodiment of the present invention provides a special mini water pump station system for medium repair of blast furnaces, including a water storage tank 1, a cooling water inlet pipeline mechanism, a cooling water injection pipeline mechanism, and a circulating water heat dissipation mechanism; the cooling water inlet pipeline mechanism includes a return water header 9, and the return water header 9 is provided with at least one first joint pipe for communicating with the outlet of the blast furnace cooling stave, at least one make-up water pipe, and at least one spray pipe 11. The end of the make-up water pipe away from the return water header 9 is used to connect to an external water source. The spray pipe 11 is located above the water storage tank 1 and is used to spray the water in the return water header 9 into the water storage tank 1; the circulating water heat dissipation mechanism is used to dissipate heat from the water sprayed by the spray pipe 11; one end of the cooling water injection pipeline mechanism is connected to the water storage tank 1, and the other end is provided with at least one second joint pipe for communicating with the inlet of the blast furnace cooling stave, and is used to pump the water in the water storage tank 1 into the inlet of the blast furnace cooling stave.

[0029] In this embodiment, when the medium repair of the blast furnace is carried out, the blast furnace water pump house system cannot supply water due to maintenance. At this time, the special mini water pump station system for medium repair of the blast furnace can be used to cool and protect the blast furnace cooling stave and carbon bricks, so as to cool the residual molten iron in the furnace and facilitate personnel to enter the furnace for construction. Specifically, connect the second joint pipe at the end of the cooling water injection mechanism to the inlet of the blast furnace cooling stave, then connect the first joint pipe on the return water header 9 to the outlet of the blast furnace cooling stave, and then connect the make-up water pipe to an external water source. Then, use the external water source and the make-up water pipe to replenish water into the return water header 9. The cooling water replenished in the return water header 9 is sprayed into the water storage tank 1 through the spray pipe 11. After the water level in the water storage tank 1 reaches the set value, the water replenishment operation is stopped. Then, use the cooling water injection pipeline mechanism to pump the water in the water storage tank 1 into the inlet of the blast furnace cooling stave. The cooling water entering the blast furnace cooling stave exchanges heat in the blast furnace cooling stave, cools and protects the blast furnace cooling stave and carbon bricks, and at the same time cools the residual molten iron in the furnace. The temperature of the cooling water after heat exchange will rise to 50 °C - 60 °C. After that, the cooling water after heat exchange flows out from the outlet of the blast furnace cooling stave and enters the first joint pipe, then flows into the return water header 9 along the first joint pipe, and finally is sprayed back into the water storage tank 1 by the spray pipe 11 to complete a cycle process. During the process of the cooling water after heat exchange being sprayed by the spray pipe 11, the circulating water heat dissipation mechanism continuously dissipates heat from the water sprayed by the spray pipe 11 to reduce the water temperature of the cooling water after heat exchange for recycling.

[0030] It can be seen that using the special mini water pump station system for the intermediate repair of this blast furnace can cool and protect the cooling stave and carbon bricks of the blast furnace, reduce the temperature of the residual molten iron in the furnace, not only extend the service life of the cooling stave and refractory materials, but also avoid safety accidents of the construction personnel during the intermediate repair of the blast furnace caused by too high water temperature of the molten iron. By using the special mini water pump station system for the intermediate repair of this blast furnace, the recycling of cooling water is realized, the required water volume is small, water resources are saved, and it can be used without laying pipelines, without affecting the intermediate repair construction of the blast furnace. In addition, it has its own heat dissipation and cooling function, which can quickly reduce the water temperature of the cooling water after heat exchange for recycling.

[0031] In this embodiment, as Figure 1 and Figure 2 shown, the top of the water storage tank 1 is open for the heat dissipation of the circulating water. A water baffle 19 is respectively arranged on the four sides of the top of the water storage tank 1. The four water baffles 19 are all inclined outward. From top to bottom, the cross-sectional area of the horn-shaped channel formed between the four water baffles 19 gradually decreases. The four water baffles 19 form the top opening of the water storage tank 1.

[0032] Optionally, the top opening of the water storage tank 1 can also be set in other shapes, such as rectangular tubular.

[0033] The above-mentioned return water water bag 9 is installed on the outer side of the top opening of the water storage tank 1. A plurality of first joint pipes are arranged on the return water water bag 9. The plurality of first joint pipes are arranged along the axis direction of the return water water bag 9. A first quick joint 7 is installed at the end of each first joint pipe, and is quickly connected to the water outlet of the blast furnace cooling stave by using the first quick joint 7. It should be noted that the number of the first joint pipes usually keeps consistent with the number of the water outlets of the blast furnace cooling stave, and the number of the first joint pipes is not limited here.

[0034] In order to detect the water level in the water storage tank 1 in real time for accurately replenishing water to the water storage tank 1. As Figure 1 shown, a water level gauge 16 is installed on the outer side wall of the water storage tank 1, and an electric water replenishing valve 17 is installed on the water replenishing pipe of the return water water bag 9. When initially replenishing water to the water storage tank 1, the total control box controls the electric water replenishing valve 17 to open. The water in the external water source flows into the return water water bag 9 through the water replenishing pipe. The cooling water in the return water water bag 9 is sprayed into the water storage tank 1 through the spray pipe 11. The water level in the water storage tank 1 gradually rises. The water level gauge 16 detects the water level in the water storage tank 1 in real time. After the water level gauge 16 detects that the water level in the water storage tank 1 reaches the set value, the total control box controls the electric water replenishing valve 17 to close.

[0035] Optionally, the water level gauge 16 is a transparent float water level gauge for observing the water level in the water storage tank 1.

[0036] In addition, it should be clear that a check valve is installed on each first connecting pipe, so that the water in the blast furnace cooling stave can flow into the return water header 9 through the first connecting pipe. When replenishing water, the water in the return water header 9 will not flow back into the blast furnace cooling stave from the first connecting pipe.

[0037] In this embodiment, a plurality of spray pipes 11 are provided. The plurality of spray pipes 11 are arranged along the axial direction of the return water header 9. Each spray pipe 11 is provided with 130 side-by-side spray nozzles 12 downward. The spray nozzles 12 spray circulating water into the water storage tank 1 for cooling the return water.

[0038] In this embodiment, as Figure 1 and Figure 2 shown, a bearing base is fixedly connected to the outer side wall of the water storage tank 1. The cooling water injection pipeline mechanism includes a water supply header 5 and at least one water supply pump 3. Among them, the water supply header 5 and the water supply pump 3 are both installed on the bearing base. The water supply pump 3 is signal-connected to the master control box, and the master control box controls the opening and closing of the water supply pump 3. Further, the water inlet end of the water supply pump 3 and the water storage tank 1 are connected through a first pipeline. The water outlet end of the water supply pump 3 and the water supply header 5 are connected through a second pipeline. A water pump inlet valve 2 for controlling its on-off and an anti-swirl device 15 are installed on the first pipeline. A plurality of second connecting pipes and an overflow pipe are arranged along the axial direction of the water supply header 5. A water supply valve 6 and a first quick connector 7 are installed on each second connecting pipe. Among them, the water supply valve 6 is used to control the on-off of the water path of the second connecting pipe, and the first quick connector 7 is used to quickly connect to the water inlet of the blast furnace cooling stave.

[0039] In this way, by opening the water pump inlet valve 2 and starting the water supply pump 3, the low-temperature cooling water in the water storage tank 1 is sucked into the first pipeline, and then pumped into the second pipeline and flows into the blast furnace cooling stave from the second connecting pipe to cool and protect the blast furnace cooling stave and the carbon bricks in the blast furnace.

[0040] It should be noted that the anti-swirl cyclone 15 is a device used to control and reduce the rotational motion in liquids or gases, and its main functions are as follows: Eliminate swirl: The anti-swirl cyclone 15 changes the flow pattern of the fluid through a special structural design to reduce or eliminate the swirl phenomenon. This helps to maintain the smooth flow of the fluid and avoid instability and energy loss caused by swirl. Improve fluid transmission efficiency: By reducing the rotation and eddy currents in the fluid, the anti-swirl cyclone 15 can reduce the friction and resistance in the pipeline, thereby improving the fluid transmission efficiency. Prevent cavitation: During the water intake process of the water supply pump 3, the swirl phenomenon may cause air to enter the water supply pump 3, resulting in cavitation. The anti-swirl cyclone 15 can effectively avoid this problem, ensuring the normal operation of the water supply pump 3 and extending the service life of the equipment. Optimize the stability of the pipeline system: By suppressing the generation of eddy currents, the anti-swirl cyclone 15 helps to reduce the pressure fluctuations in the pipeline and improve the stability and reliability of the equipment.

[0041] As a preferred embodiment, as Figure 1 shown, a check valve 4 and an exhaust valve 18 are successively installed on the second pipeline. When a sudden power outage occurs and both water pumps cannot work, the check valve 4 can immediately cut off the water path to prevent backflow. The main function of the exhaust valve 18 is to discharge the excess air in the water. Further, an overflow pipe is installed on the water supply water tank 5, and an automatic overflow valve 8 is installed on this overflow pipe. The function of the automatic overflow valve 8 is to facilitate the discharge of the excess water in the water storage tank 1.

[0042] Considering that if only one water supply pump 3 is set, if this water supply pump 3 breaks down, the dedicated mini water pump station system for the intermediate repair of this blast furnace cannot be used. Therefore, as Figure 2 shown, two water supply pumps 3 are set, and the automatic switching of the two water supply pumps 3 is realized through an interlock circuit, which can ensure the continuous operation of the system. When the operating pump is working normally, the interlock circuit is in the standby state and the standby pump does not start. If the operating pump stops due to a fault (such as abnormal current, insufficient pressure, etc.), the interlock circuit detects the stop signal. The interlock circuit immediately disconnects the contactor of the operating pump and at the same time closes the contactor of the standby pump to start the standby pump. After the standby pump starts, the system continues to operate until the fault is eliminated or manually switched back to the operating pump. In this way, the practicability of the dedicated mini water pump station system for the intermediate repair of this blast furnace can be improved.

[0043] In this embodiment, the circulating water cooling mechanism includes a bottom grid shelf 14, a top grid shelf 13 and an axial flow fan. Among them, the bottom grid shelf 14 is fixedly installed at the top opening of the water storage tank 1. The top grid shelf 13 is higher than the bottom grid shelf 14, and the top grid shelf 13 is fixedly installed in the tank opening formed by the four water baffle plates 19 at the top of the water storage tank 1. The spray pipe 11 is located between the bottom grid shelf 14 and the top grid shelf 13. The axial flow fan is arranged on the top grid shelf 13 and is used to blow air downward to accelerate the cooling of the high-temperature circulating water sprayed by the spray pipe 11.

[0044] It should be clear that the distance between the spray pipe 11 and the top opening of the water storage tank 1 is at least 400 mm, so that the high-temperature circulating water droplets sprayed by the spray pipe 11 will be in full contact with the air during the dripping process for heat dissipation.

[0045] It should be noted that when the high-temperature circulating water after heat exchange in the blast furnace cooling wall flows into the water supply water bag 5 from the blast furnace cooling wall water outlet, the high-temperature circulating water in the water supply water bag 5 will be sprayed out from the spray pipe 11. At this time, the axial flow fan is turned on, and the forced convection of the axial flow fan is used to enhance the heat dissipation effect of the high-temperature circulating water, so that the water temperature of the water flowing back into the water storage tank 1 is greatly reduced for recycling.

[0046] In order to further accelerate the heat dissipation of the high-temperature circulating water, industrial ice can be placed on the bottom grid shelf 14. In this way, while the water droplets dripping from the spray pipe 11 are dissipated by the wind of the axial flow fan, they are also cooled again by the industrial ice, which greatly improves the heat dissipation efficiency of the high-temperature circulating water. The two methods of enhancing heat dissipation can be selected according to the on-site situation, or used simultaneously.

[0047] It should be noted that since the melting of the industrial ice will cause the water level in the water storage tank 1 to rise, when the water level in the water storage tank 1 exceeds the limit value, the automatic overflow valve 8 can be opened to drain the excess water. Under normal circumstances when industrial ice is not used to enhance heat dissipation, the automatic overflow valve 8 is in an idle state.

[0048] In this embodiment, the volume of the water storage tank 1 is 1.5 m × 1.5 m × 1.5 m and can hold 3 tons of water. The water supply capacity of the water supply pump 3 is 200 m 3 / h and the head is 20 m. A plurality of rollers are installed at the bottom of the water storage tank 1 and at the bottom of the bearing base to improve flexibility. The integrated degree of this special mini water pump station system for medium repair of blast furnace is high, the equipment volume is small, the floor area is small, and it can be placed on the open space at the furnace base where there is no construction operation during the medium repair of the blast furnace, without affecting the medium repair work of the blast furnace. And the equipment is movable and highly flexible, and the equipment can be pushed to a position close to the blast furnace, thus shortening the length of the pipeline and eliminating the need to lay pipelines on the ground.

[0049] When the blast furnace is under repair, the blast furnace water pump room system cannot supply water due to maintenance. At this time, the blast furnace cooling wall and carbon bricks can be cooled and protected by the special micro water pump station system for blast furnace repair, so as to cool the residual molten iron in the furnace and facilitate personnel to enter the furnace for construction.

[0050] First, place the micro-pump station system and move it to a normal flat ground that will not affect the repair construction. Then use the first quick connector 7 on the second connector pipe to connect with the cooling wall water inlet pipe, and then use the second quick connector 10 on the first connector pipe to connect with the cooling wall water outlet pipe. Then connect the water supply pipe to the external water source, and turn on the power after checking and confirming that it is correct. Then manually open the electric water supply valve 17 to replenish water in the water tank 1. When the water level of the water level gauge 16 reaches the set hydrology, the control circuit automatically closes the electric water supply valve 17. At this time, open the water pump inlet valve 2 and the exhaust valve 18 of the two water supply pumps 3 until water flows out of the exhaust valve 18, and then close the two exhaust valves 18.

[0051] Furthermore, one water supply pump 3 is started, and the other water supply pump 3 is put into the pump stop interlock standby state. When the water supply starts, the electric water replenishment valve 17 is manually opened again to replenish water. In the initial stage, the water is supplied stably with a water volume less than the maximum water replenishment capacity. Since the circulating water entering the cooling wall has not yet flowed back to the water storage tank 1 through the spray pipe 11, the water level in the water storage tank 1 will continue to drop during this period. After all the spray heads 12 start to spray water, the water level in the water storage tank 1 begins to gradually stop dropping. At this time, the electric water replenishment valve 17 is adjusted to the automatic water replenishment state and the opening of the water supply valve 6 is adjusted until the water volume reaches the required level. At this point, the micro water pump station system enters a stable operation state.

[0052] In a stable operation state, after the circulating water passes through the blast furnace cooling wall, it will take away the residual heat of the cooling wall, and the water temperature of the circulating water will rise. When the high-temperature circulating water after heat exchange in the blast furnace cooling wall flows into the water supply bag 5 from the blast furnace cooling wall outlet, the high-temperature circulating water in the water supply bag 5 will be sprayed out from the spray pipe 11. During the dripping process, the water droplets will fully contact with the air and dissipate heat. In order to improve the heat dissipation efficiency, the axial flow fan is turned on at this time, and the heat dissipation effect of the high-temperature circulating water is enhanced through forced convection of the axial flow fan, so that the water temperature of the water flowing back to the water storage tank 1 is greatly reduced for recycling.

[0053] In order to further accelerate the heat dissipation of the high-temperature circulating water, industrial ice can be selectively placed on the bottom grid shelf 14 to accelerate the heat dissipation efficiency of the high-temperature circulating water. At this time, the melting of the industrial ice will cause the water level of the water storage tank 1 to rise, and the automatic overflow valve 8 will be automatically put into automatic operation. When the water level exceeds the limit value, the automatic overflow valve 8 will automatically open to discharge excess water.

[0054] It can be seen that the special mini water pump station system for medium repair of blast furnaces can be used to cool and protect the cooling stave and carbon bricks of the blast furnace, reduce the temperature of the residual molten iron in the furnace, not only extend the service life of the cooling stave and refractory materials, but also avoid safety accidents of the construction personnel during the medium repair of the blast furnace caused by too high water temperature of the molten iron. By using the special mini water pump station system for medium repair of blast furnaces, the recycling of cooling water is realized, the required water volume is small, water resources are saved, and it can be used without laying pipelines, without affecting the medium repair construction of the blast furnace.

[0055] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A special mini water pump station system for medium repair of blast furnaces, characterized in that, It includes a water storage tank (1), a cooling water inlet pipeline mechanism, a cooling water injection pipeline mechanism, and a circulating water heat dissipation mechanism; The cooling water inlet pipeline mechanism includes a return water header (9). At least one first joint pipe for communicating with the water outlet of the blast furnace cooling stave, at least one make-up water pipe, and at least one spray pipe (11) are provided on the return water header (9). The end of the make-up water pipe away from the return water header (9) is used to connect to an external water source. The spray pipe (11) is located above the water storage tank (1) and is used to spray the water in the return water header (9) into the water storage tank (1); The circulating water heat dissipation mechanism is used to dissipate heat from the water sprayed by the spray pipe (11); One end of the cooling water injection pipeline mechanism is connected to the water storage tank (1), and at least one second joint pipe for communicating with the water inlet of the blast furnace cooling stave is provided at the other end, and is used to pump the water in the water storage tank (1) into the water inlet of the blast furnace cooling stave.

2. The dedicated mini water pump station system for medium repair of blast furnace according to claim 1, characterized in that, The cooling water injection pipeline mechanism includes a supply water header (5) and at least one supply water pump (3). The inlet end of the supply water pump (3) and the water storage tank (1) are connected by a first pipeline, and the outlet end of the supply water pump (3) and the supply water header (5) are connected by a second pipeline. At least one water pump inlet valve (2) for controlling its on-off is installed on the first pipeline; The second joint pipe is provided on the supply water header (5).

3. The dedicated mini water pump station system for intermediate BF relining according to claim 2, characterized in that, At least two supply water pumps (3) are provided.

4. A dedicated mini water pump station system for medium repair of blast furnaces according to claim 1, characterized in that The circulating water heat dissipation mechanism includes a bottom grid shelf (14). The bottom grid shelf (14) is provided between the water storage tank (1) and the spray pipe (11), and industrial ice is placed on the bottom grid shelf (14).

5. The special mini water pump station system for medium repair of blast furnace according to claim 4, characterized in that, The circulating water heat dissipation mechanism includes at least one axial flow fan and a top grid shelf (13) located above the spray pipe (11). The axial flow fan is installed on the top grid shelf (13) and is used to dissipate heat from the circulating water sprayed by the spray pipe (11).

6. The special mini water pump station system for the medium repair of blast furnace according to claim 2, characterized in that, At least one check valve (4) and at least one exhaust valve (18) are installed on the second pipeline.

7. A dedicated mini water pump station system for medium repair of blast furnace according to claim 1, characterized in that, At least one water level gauge (16) for measuring the internal water level is installed on the water storage tank (1).

8. The special mini water pump station system for medium repair of blast furnace according to claim 2, characterized in that, A plurality of the first joint pipes are provided, and the plurality of first joint pipes are arranged along the axis direction of the return water header (9); a plurality of the second joint pipes are provided, and the plurality of second joint pipes are arranged along the axis direction of the supply water header (5).

9. The special mini water pump station system for intermediate BF relining according to claim 2, characterized in that It includes a main control box, and the supply water pump (3) and the water pump inlet valve (2) are respectively connected to the main control box in a signal connection.

10. A dedicated mini water pump station system for intermediate repairs of blast furnaces according to claim 2, characterized in that, At least one overflow pipe is provided on the supply water header (5), and at least one automatic overflow valve (8) is provided on the overflow pipe.

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