Air-resistance-preventing water spraying structure of blast furnace cooling water return pipeline

Abstract

The utility model relates to a blast furnace cooling water return pipeline anti-air-resistance water spraying structure which comprises a water return tank and a gas collection release pipe which are vertically arranged up and down, the water return tank is communicated with the gas collection release pipe through a first water return pipe, a second water return pipe is arranged at the bottom of the gas collection release pipe, and a gas collection area is arranged at the top of the gas collection release pipe. The top of the gas collection area is communicated to the position above the water return groove through an exhaust pipe, the pipe diameter of the first water return pipe is the same as that of the second water return pipe, the pipe diameter of the gas collection release pipe is larger than that of the second water return pipe, and the speed of cooling water in the water return pipe is slowed down after the cooling water enters the gas collection release pipe. Gas converges in the gas collecting and releasing pipe, floats upwards and is exhausted through the exhaust pipe, the upper part of the exhaust pipe is provided with a U-shaped bent pipe which is communicated to the upper part of the water return tank, and cooling water brought out by the gas mass in the pipe flows into the water return tank through the U-shaped bent pipe; the water return tank is reasonable in structure, convenient to manufacture and good in using effect, the gas content in cooling water is effectively reduced, and the surrounding environment of the water return tank is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blast furnace cooling technical field, concretely is a blast furnace cooling backwater pipeline anti air resistance water spraying structure. BACKGROUND

[0002] The stable operation of the blast furnace relies on the effective cooling of each part by the blast furnace cooling system, and the cooling effect of the cooling system directly affects the service life of the blast furnace. The cooling system is a circulating cooling water, and the cooling water can only achieve good cooling effect when circulating smoothly in the pipeline. The blast furnace cooling system is provided with an open backwater tank on the tuyere platform of the blast furnace. When the cooling water flows in the circulating pipeline, gas will be mixed in the process of thermal expansion and temperature shrinkage. The gas gathers into a gas group with the cooling water flowing, and the gas group will cause air resistance in the pipeline to hinder the smooth flow of the cooling water. Chinese patent CN216107037U discloses a blast furnace tuyere platform water collecting tank device, which improves the backwater pipe water collecting tank to control the gas entering the pipeline from the source of the water collecting tank. The above-mentioned patent releases gas in the water collecting tank, and the water spraying situation still exists in the primary water tank. The cooling water will splash out or turn over at the outlet of the backwater pipeline when the cooling water in the pressurized pipeline enters the water collecting tank, therefore, the blast furnace cooling backwater pipeline anti air resistance water spraying structure provided by the present application can avoid water spraying in the water tank. SUMMARY

[0003] The utility model aims at providing a blast furnace cooling backwater pipeline anti air resistance water spraying structure to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A blast furnace cooling backwater pipeline anti air resistance water spraying structure, comprising a backwater tank and a gas collecting and releasing pipe arranged vertically, the backwater tank and the gas collecting and releasing pipe are connected through a first backwater pipe, the bottom of the gas collecting and releasing pipe is provided with a second backwater pipe, the first backwater pipe and the second backwater pipe are arranged at intervals along the axis, the top of the gas collecting and releasing pipe is provided with a gas collecting area, the lower end of the first backwater pipe is provided with a gas blocking ring inserted into the gas collecting area, and the top of the gas collecting area is provided with an exhaust pipe connected to the upper side of the backwater tank.

[0006] The first backwater pipe and the second backwater pipe have the same pipe diameter, and the pipe diameter of the gas collecting and releasing pipe is greater than that of the second backwater pipe.

[0007] The pipe diameter of the gas collecting and releasing pipe is two times or more than two times of the pipe diameter of the second backwater pipe.

[0008] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0009] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0010] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0011] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0012] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0013] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0014] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0015] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis.

[0016] The protruding top of the gas collection and release pipe is an eccentric protrusion, and the highest point of the protruding top deviates from the direction of the first water return pipe axis. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the embodiment 1 of the utility model.

[0018] Figure 2 This is a utility model Figure 1 A sectional view;

[0019] Figure 3 This is a partial cross-sectional view of the structure of Embodiment 2 of this utility model;

[0020] Figure 4 This is a utility model Figure 3 A schematic diagram of the side view structure;

[0021] Figure 5 This is a utility model Figure 3 A top-view structural diagram;

[0022] Figure 6 This is a structural schematic diagram of Embodiment 3 of this utility model.

[0023] In the diagram: 1. Return water tank; 1-1. Buffer filter plate; 1-2. Adjustment device; 1-2-1. Screw; 1-2-2. Guide rod; 2. Gas collection and release pipe; 2-1. Gas collection area; 3. First return water pipe; 3-1. Air blocking ring; 4. Exhaust pipe; 4-1. Gas collection branch pipe; 5. Second return water pipe. Detailed Implementation

[0024] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0025] like Figures 1 to 6The structure is characterized in that the blast furnace cooling water return pipeline is provided with a water return groove 1 and a gas collection and release pipe 2 arranged vertically, the water return groove 1 and the gas collection and release pipe 2 are connected through a first water return pipe 3, the bottom of the gas collection and release pipe 2 is provided with a second water return pipe 5, the first water return pipe 3 and the second water return pipe 5 are arranged on two axes which do not coincide, preferably, the axes can ensure that the diameters of the first water return pipe 3 and the second water return pipe 5 are not straight through, so that the cooling water cannot flow straight into the water return groove 1, and the cooling water can fully release gas in the gas collection and release pipe 2, the top of the gas collection and release pipe 2 is provided with a gas collection area 2-1, the lower end of the first water return pipe 3 is provided with a gas blocking ring 3-1 which is inserted into the gas collection area 2-1, the top of the gas collection area 2-1 is provided with an exhaust pipe 4 which is connected to the upper side of the water return groove 1, the gas rises and gathers in the gas collection area 2-1 to form a gas cluster, at the same time, the gas blocking ring 3-1 can prevent the gas cluster from flowing into the first water return pipe 3, the gas cluster carries part of the cooling water to fly into the exhaust pipe 4, the flying liquid adheres to the exhaust pipe 4 and part of the flying liquid flows back into the gas collection and release pipe 2, and part of the flying liquid flows into the water return groove 1 through the U-shaped pipe at the top of the exhaust pipe 4, none of the above-mentioned processes can cause water spray pollution to the surrounding environment.

[0026] As shown in Figure 1 , Figure 2 and Figure 6 , the top of the gas collection and release pipe 2 is a convex top, the convex top is an eccentric convex, the highest point of the convex top deviates from the axis of the first water return pipe 3, the overlapping part of the gas blocking ring 3-1 and the convex top is the gas collection area 2-1, and the exhaust pipe 4 is arranged at the highest point of the convex top to facilitate gas-liquid separation, the liquid is blocked by the inner wall of the convex top and stays in the gas collection and release pipe 2, and the gas enters the exhaust pipe 4 and is discharged to the outside. Figure 1 and Figure 2 , the convex top of the embodiment 1 is an eccentric arc top, and the exhaust pipe 4 is arranged at the highest part of the eccentric arc top. Figure 6 ,

[0027] As shown in Figures 3 to 5 , the top of the gas collection and release pipe 2 is a flat top, and the exhaust pipe 4 is arranged on the flat top, and the structure is further optimized to make the gas cluster in the top more quickly discharged, and the exhaust pipe 4 can be further provided with a plurality of gas collection branch pipes 4-1 which are regularly or irregularly arranged on the top of the gas collection and release pipe 2 to connect the exhaust pipe 4 and the gas collection and release pipe 2.

[0028] As shown in Figure 2、 Figure 3 and Figure 5 As shown in the drawings, the buffer filter plate 1-1 is arranged above the first backwater pipe 3 of the backwater tank 1, and the buffer filter plate 1-1 can buffer the decomposed water flow when the backwater speed in the first backwater pipe 3 is fast; the adjusting device 1-2 is arranged on the buffer filter plate 1-1, and the adjusting device 1-2 is used for adjusting the spacing between the buffer filter plate 1-1 and the first backwater pipe 3, so that the position of the adjusting device 1-2 does not affect the water flow speed while the adjusting device 1-2 plays the buffering and filtering functions; the adjusting device 1-2 in the embodiment of the application is a screw rod 1-2-1 and a guide rod 1-2-2 arranged at two corners of the end portion of the buffer filter plate 1-1; the buffer filter plate 1-1 is provided with a screw hole and a guide hole matched with each other; the screw rod 1-2-1 and the guide rod 1-2-2 are fixed on the backwater tank 1; the screw rod 1-2-1 can drive the buffer filter plate 1-1 to move up and down along the screw rod 1-2-1 to adjust the spacing between the buffer filter plate 1-1 and the first backwater pipe 3; and the buffer filter plate 1-1 can be selected from filter materials with adsorption function, which is used for filtering impurities carried in the backwater.

[0029] Working principle: the gas collecting and releasing pipe is arranged on the backwater pipeline below the backwater tank, the exhaust pipe is arranged above the gas collecting and releasing pipe, the gas in the cooling water of the blast furnace is gathered and discharged, the water spray caused by the gas group carried by the cooling water into the backwater tank is avoided, the gas group in the cooling water is provided with containing space and releasing time for floating up, and the gas entering the backwater tank is effectively avoided.

[0030] In the present application, the principle and implementation mode of the present application are described in detail by using specific embodiments, and the above embodiment is only used to help understand the method and core idea of the present application; the skilled in the art can modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A structure for preventing air resistance and water spraying in a blast furnace cooling return water pipeline, characterized in that: It includes a vertically arranged return water tank (1) and an air collection and release pipe (2). The return water tank (1) and the air collection and release pipe (2) are connected by a first return water pipe (3). A second return water pipe (5) is provided at the bottom of the air collection and release pipe (2). The first return water pipe (3) and the second return water pipe (5) are spaced apart on the axis. An air collection area (2-1) is provided at the top of the air collection and release pipe (2). An air-blocking ring (3-1) is provided at the lower end of the first return water pipe (3) and inserted into the air collection area (2-1). An exhaust pipe (4) is provided at the top of the air collection area (2-1) and connects to the top of the return water tank (1).

2. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 1, characterized in that: The first return water pipe (3) and the second return water pipe (5) have the same diameter, and the diameter of the gas collection and release pipe (2) is larger than that of the second return water pipe (5).

3. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 2, characterized in that: The diameter of the gas collection and release pipe (2) is set to be twice or more than twice the diameter of the second return water pipe (5).

4. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 2, characterized in that: The top of the gas collection and release pipe (2) is a raised top, which is an eccentric raised top, and the highest point of the raised top is deviated from the axis of the first return water pipe (3).

5. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 4, characterized in that: The raised top is an eccentric circular arc top, and the exhaust pipe (4) is located at the highest part of the eccentric circular arc top.

6. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 4, characterized in that: The protruding top is an eccentric frustum top, and the exhaust pipe (4) is located on the top surface of the eccentric frustum top.

7. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 2, characterized in that: The top of the gas collection and release pipe (2) is flat, and the exhaust pipe (4) is set on the flat top.

8. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 7, characterized in that: The exhaust pipe (4) also includes multiple gas collecting branch pipes (4-1), which are regularly or irregularly distributed and connected between the exhaust pipe (4) and the gas collecting and releasing pipe (2).

9. A blast furnace cooling return water pipeline anti-gas-blocking spray structure according to claim 4 or 7, characterized in that: The return water tank (1) has a buffer filter plate (1-1) above the first return water pipe (3). The buffer filter plate (1-1) is equipped with an adjustment device (1-2), which is used to adjust the distance between the buffer filter plate (1-1) and the first return water pipe (3).

10. The anti-gas-blocking water spray structure for a blast furnace cooling return water pipeline according to claim 9, characterized in that: The adjusting device (1-2) includes a screw (1-2-1) and a guide rod (1-2-2) disposed at the two corners of the end of the buffer filter plate (1-1). Rotating the screw (1-2-1) can drive the buffer filter plate (1-1) to move up and down along the screw (1-2-1) to adjust its distance from the first return water pipe (3).

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