Blast furnace high-pressure water and soft water mutual standby device

Abstract

The utility model discloses a blast furnace high-pressure water and soft water mutual standby device which comprises an industrial water conveying pipeline, a soft water conveying pipeline, an interconnection pipeline, an emptying pipe, a one-way valve, an automatic alarm mechanism and a blast furnace body, and the industrial water conveying pipeline and the soft water conveying pipeline are connected with the blast furnace body. The industrial water conveying pipeline and the soft water conveying pipeline are communicated through an interconnection pipeline, a first stop valve is installed at the left end of the interconnection pipeline, a second stop valve is installed at the right end of the interconnection pipeline, an emptying pipe is installed at the lower end of the interconnection pipeline, and a third stop valve is installed on the emptying pipe. The industrial water conveying pipeline and the soft water conveying pipeline are each provided with an automatic alarm mechanism. The device is convenient for solving the sudden water break condition, is convenient for quickly recovering water supply, and ensures the normal production of the blast furnace; malignant accidents of burnthrough of a tuyere small sleeve and burnout of a cooling wall in the blast furnace are eradicated, and the serious consequence of hearth freezing caused by a large amount of water leaking into the furnace is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace water supply systems, in particular to a device for backing up blast furnace high-pressure water and soft water. Background Art

[0002] The blast furnace is made of steel plates as the shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: the throat, the body, the waist, the belly, and the hearth. Due to the advantages of good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor production efficiency, and low energy consumption, the iron produced by this method accounts for the vast majority of the world's total iron production.

[0003] All tuyere sleeves of blast furnace are supplied by industrial water (high-pressure water) system. If the industrial water system of blast furnace stops water suddenly, it will cause water shortage of tuyere sleeves, which may easily lead to burnout of tuyere sleeves and malignant accidents of slag and iron spraying out of furnace. All cooling walls of blast furnace are supplied by soft water (water containing no or less soluble calcium and magnesium compounds) system. If the soft water system stops water, the cooling walls and various valve gaskets of soft water will be burned out, resulting in a large amount of water leakage, and it is also easy to cause a large amount of water leakage into the furnace to freeze the furnace cylinder, which may even cause shutdown, seriously restricting the normal production of blast furnace. Therefore, in view of the above status quo, it is urgent to develop a device that is convenient for solving sudden water shortage, convenient for quickly restoring water supply, ensuring the normal production of blast furnace, preventing the occurrence of malignant accidents of burnout of tuyere sleeves and burning of cooling walls in blast furnace, and avoiding the serious consequence of large amount of water leakage into the furnace to freeze the furnace cylinder, so as to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The utility model aims to provide a device for backing up blast furnace high-pressure water and soft water to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for backing up high-pressure water and soft water for a blast furnace comprises an industrial water delivery pipeline, a soft water delivery pipeline, an interconnecting pipeline, a drain pipe, a one-way valve, an automatic alarm mechanism and a blast furnace body. The industrial water delivery pipeline and the soft water delivery pipeline are connected to the blast furnace body, and the industrial water delivery pipeline and the soft water delivery pipeline are connected through the interconnecting pipeline. A first stop valve is installed at the left end of the interconnecting pipeline, a second stop valve is installed at the right end of the interconnecting pipeline, a drain pipe is installed at the lower end of the interconnecting pipeline, a third stop valve is installed on the drain pipe, and an automatic alarm mechanism is installed on both the industrial water delivery pipeline and the soft water delivery pipeline.

[0007] As a further solution of the utility model: a one-way valve is installed on both the industrial water delivery pipeline and the soft water delivery pipeline.

[0008] As a further solution of the utility model: the automatic alarm mechanism on the industrial water delivery pipeline is located on the left side of the one-way valve, and the automatic alarm mechanism on the soft water delivery pipeline is located on the right side of the one-way valve.

[0009] As a further solution of the utility model: the automatic alarm mechanism includes: a flow sensor, a controller and an alarm, the flow sensor is electrically connected to the controller, and the alarm is installed on the controller.

[0010] Beneficial effect: the device in which high-pressure water and soft water of the blast furnace are backed up with each other, when the water flow in the industrial water delivery pipeline and the soft water delivery pipeline is normally supplied to the blast furnace body, the first stop valve, the second stop valve and the third stop valve are all in a closed state, and the water flow in the industrial water delivery pipeline and the soft water delivery pipeline is monitored by an automatic alarm mechanism. When any one of the industrial water delivery pipeline and the soft water delivery pipeline is out of water, the automatic alarm mechanism immediately sounds an alarm to remind people to quickly repair it. At the same time, the first stop valve and the second stop valve are opened, so that the water flow in the industrial water delivery pipeline and the soft water delivery pipeline can replenish and circulate with each other, thereby ensuring that the industrial water delivery pipeline and the soft water delivery pipeline can both supply water to the blast furnace body. When the emergency situation of water outage is over, the first stop valve and the second stop valve are closed, and then the third stop valve is opened, so that the residual water flow in the interconnected pipelines is discharged from the drain pipe, thereby preventing the interconnected pipelines from being frozen and cracked by low temperature. In summary, the utility model can conveniently solve the sudden water outage situation, facilitate the rapid restoration of water supply, and ensure the normal production of the blast furnace; prevent the occurrence of serious accidents such as the burning through of the tuyere sleeve and the burning of the cooling wall in the blast furnace, and avoid the serious consequence of a large amount of water leaking into the furnace and freezing the furnace cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 For this utility model Figure 1 Partial view at point A in the middle.

[0013] In the figure: 1. industrial water delivery pipeline; 2. soft water delivery pipeline; 3. interconnection pipeline; 301. first stop valve; 302. second stop valve; 4. drain pipe; 401. third stop valve; 5. check valve; 6. automatic alarm mechanism; 601. flow sensor; 602. controller; 603. alarm; 7. blast furnace body. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Example

[0016] See also Figures 1-2 In the embodiment of the utility model, a device for backing up high-pressure water and soft water for a blast furnace comprises an industrial water delivery pipeline 1, a soft water delivery pipeline 2, an interconnection pipeline 3, an emptying pipe 4, a one-way valve 5, an automatic alarm mechanism 6 and a blast furnace body 7. The industrial water delivery pipeline 1 and the soft water delivery pipeline 2 are connected to the blast furnace body 7. The industrial water delivery pipeline 1 leads to each tuyere small sleeve in the blast furnace body 7 for water cooling, and the soft water delivery pipeline 2 leads to each cooling wall in the blast furnace body 7. A one-way valve 5 is installed on each of the industrial water delivery pipeline 1 and the soft water delivery pipeline 2. The water flow in the industrial water delivery pipeline 1 and the soft water delivery pipeline 2 can only be transported in one direction through the setting of the one-way valve 5. The industrial water delivery pipeline 1 and the soft water delivery pipeline 2 are connected through the interconnection pipeline 3. The interconnected pipeline 3 is connected, a first stop valve 301 is installed at the left end of the interconnected pipeline 3, a second stop valve 302 is installed at the right end of the interconnected pipeline 3, a drain pipe 4 is installed at the lower end of the interconnected pipeline 3, and a third stop valve 401 is installed on the drain pipe 4. An automatic alarm mechanism 6 is installed on both the industrial water delivery pipeline 1 and the soft water delivery pipeline 2. The automatic alarm mechanism 6 on the industrial water delivery pipeline 1 is located on the left side of the one-way valve 5, and the automatic alarm mechanism 6 on the soft water delivery pipeline 2 is located on the right side of the one-way valve 5. The automatic alarm mechanism 6 includes: a flow sensor 601, a controller 602 and an alarm 603. The flow sensor 601 is electrically connected to the controller 602, and the controller 602 is installed with an alarm 603.

[0017] The working principle of the utility model is: the high-pressure water and soft water of the blast furnace are mutually backed up by the device. When the water flow in the industrial water delivery pipeline 1 and the soft water delivery pipeline 2 is normally supplied to the blast furnace body 7, the first stop valve 301, the second stop valve 302 and the third stop valve 401 are all in a closed state. The water flow in the industrial water delivery pipeline 1 and the soft water delivery pipeline 2 is monitored by the automatic alarm mechanism 6. When any one of the industrial water delivery pipeline 1 and the soft water delivery pipeline 2 is cut off from water, the automatic alarm mechanism 6 immediately issues an alarm to remind people to quickly repair. At the same time, the first stop valve 301 and the second stop valve 302 are opened, so that the water flow in the industrial water delivery pipeline 1 and the soft water delivery pipeline 2 is replenished and circulated with each other, thereby ensuring that the industrial water delivery pipeline 1 and the soft water delivery pipeline 2 can both supply water to the blast furnace body 7. When the emergency situation of water cut-off ends, the first stop valve 301 and the second stop valve 302 are closed, and the third stop valve 401 is opened again, so that the residual water flow in the interconnection pipeline 3 is discharged from the drain pipe 4, so as to prevent the interconnection pipeline 3 from being frozen and cracked by low temperature.

Claims

1. A device for backing up blast furnace high-pressure water and soft water, characterized in that: The invention comprises an industrial water delivery pipeline (1), a soft water delivery pipeline (2), an interconnection pipeline (3), an exhaust pipe (4), a one-way valve (5), an automatic alarm mechanism (6) and a blast furnace body (7). The industrial water delivery pipeline (1) and the soft water delivery pipeline (2) are connected to the blast furnace body (7). The industrial water delivery pipeline (1) and the soft water delivery pipeline (2) are connected to each other through the interconnection pipeline (3). A first stop valve (301) is installed at the left end of the interconnection pipeline (3), a second stop valve (302) is installed at the right end of the interconnection pipeline (3), an exhaust pipe (4) is installed at the lower end of the interconnection pipeline (3), a third stop valve (401) is installed on the exhaust pipe (4), and an automatic alarm mechanism (6) is installed on each of the industrial water delivery pipeline (1) and the soft water delivery pipeline (2).

2. The device for backing up blast furnace high-pressure water and soft water according to claim 1 is characterized in that: A one-way valve (5) is installed on each of the industrial water delivery pipeline (1) and the soft water delivery pipeline (2).

3. The device for backing up blast furnace high-pressure water and soft water according to claim 1, characterized in that: The automatic alarm mechanism (6) on the industrial water delivery pipeline (1) is located on the left side of the one-way valve (5), and the automatic alarm mechanism (6) on the soft water delivery pipeline (2) is located on the right side of the one-way valve (5).

4. The device for backing up blast furnace high-pressure water and soft water according to claim 3 is characterized in that: The automatic alarm mechanism (6) comprises: a flow sensor (601), a controller (602) and an alarm (603); the flow sensor (601) is electrically connected to the controller (602); and the alarm (603) is installed on the controller (602).

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