CN109880952B - Method for optimizing configuration of cooling water pipe and water pipe structure capable of uniformly distributing flow - Google Patents

Abstract

The invention belongs to the field of blast furnace cooling systems, and particularly relates to a method for optimally configuring a cooling water pipe and a uniformly-divided water pipe structure; the uniformly-divided water pipe structure comprises a first large ring which is connected with the main water inlet/the main water outlet and has the same inner diameter as the main water inlet/the main water outlet; a transverse shunt tube; a vertical shunt tube; a second large ring connecting the vertical shunt tubes and the transverse shunt tubes; the third large ring is used for connecting the vertical shunt pipe and the cooling wall water pipe; the first large ring, the transverse shunt pipe, the second large ring, the vertical shunt pipe and the third large ring are communicated in sequence; the vertical shunt pipe and the second large ring are not in the same horizontal plane; the third large ring is communicated with the cooling wall water pipe. The water pipe structure with uniform flow distribution can ensure that the water distribution of the cooling wall of the blast furnace body in the circumferential direction is more uniform, reduce the damage of the cooling wall and prolong the service life of the blast furnace.

Description

A method for optimal configuration of cooling water pipes and a water pipe structure with uniform distribution

technical field

The invention belongs to the field of blast furnace cooling systems, and in particular relates to a method for optimizing the configuration of cooling water pipes and a water pipe structure with uniform distribution.

Background technique

The longevity of blast furnace has become an important symbol and part of the progress of contemporary ironmaking technology. Especially in the blast furnace, the heat load is high, the heat flow impact is large, and the damage to the furnace cooling equipment is strong. Therefore, improving the life of the furnace cooling equipment is one of the key factors to ensure the longevity of the blast furnace; In addition to the corrosion resistance of carbon bricks and the enhancement of the heat transfer capacity of the cooler, improving the uniformity of the water supply method is also an important method. By improving the uniformity of the water supply method, the damage of the blast furnace cooler can be effectively reduced and the service life of the blast furnace can be prolonged. The water supply modes of blast furnace cooling systems vary widely. The control of blast furnace cooling systems by iron and steel enterprises is still based on production experience, lacking scientific basis and theoretical support, resulting in a lot of waste of water resources and poor cooling effect. The uniformity of the water supply method in the circumferential direction and the vertical direction is not high, so it is urgent to improve the water supply method of the blast furnace cooling system. And at present, there are few studies on the uniformity of blast furnace water supply system at home and abroad, and the research mainly focuses on the small set of tuyere, blast furnace water station monitoring and water supply stability. is blank.

There are many different water supply modes in the blast furnace cooling system. Through comprehensive comparative analysis, they are mainly classified into the following categories:

Ⅰ. Single-inlet direct water supply method (as shown in Figure 1)

This water supply method is the oldest water supply method. The water flow velocity is small at the position far from the water inlet, and the water flow velocity is very large at the water inlet position, that is, the water distribution of this water supply method is extremely uneven. Basically, this water supply method is rarely used.

Ⅱ. Double-inlet or multi-inlet direct water supply mode (as shown in Figure 2A and Figure 2B)

In order to further improve the uniformity of the direct water supply method of a water inlet pipe, the uniformity of water distribution is often improved by increasing the number of water inlets uniformly in the circumferential direction of the blast furnace, forming a double-inlet or multi-inlet direct water supply method. This water supply method is better than the first water supply method, but there are also many shortcomings. Only under the condition of a large number of water inlets, the uniformity of water distribution can be effectively improved, and the effect will be more obvious; Method During the specific construction, due to the complicated layout of the pipeline, the construction difficulty of the pipeline is increased.

Ⅲ. Water supply method with single inlet and one circle of lateral shunt pipe structure (as shown in Figure 3)

In order to overcome the shortcomings of the double-inlet or multi-inlet direct water supply method, a circle of lateral water distribution pipes is added on this basis, that is, the water entering from the water inlet does not directly flow into the blast furnace cooling wall, but passes through the external large loop pipe and the horizontal pipe in turn. The water distribution pipe provided uniform water supply to the cooling wall in the middle, forming a water supply method with a single inlet and a circle of horizontal distribution pipe structure. This water supply method can greatly improve the water distribution uniformity of the cooling system, but the water distribution uniformity of the intermediate cooling wall is largely affected by the water distribution uniformity of the external large loop pipe. It is not uniform, so the water distribution of the inner cooling wall is still not uniform.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned deficiencies of the prior art and further improve the water distribution uniformity in the water supply mode of a circle of lateral shunt pipes, the present invention provides a uniform shunt water pipe structure and a blast furnace cooling system. The uniformly split water pipe structure can make the water distribution of the cooling stave of the blast furnace body in the circumferential direction more uniform, reduce the damage of the cooling stave, and improve the life of the blast furnace.

The present invention is achieved through the following technical solutions:

A water pipe structure with uniform distribution, the water pipe structure with uniform distribution includes:

a first large ring, the first large ring is connected to the total water inlet/total water outlet and the inner diameter of the first large ring is the same as the total water inlet/total water outlet inner diameter;

Lateral shunt;

vertical shunt;

a second large ring, the second large ring is connected with the vertical shunt pipe and the lateral shunt pipe;

The third large ring, the third large ring is connected with the vertical shunt pipe and the cooling wall water pipe;

The first large ring, the lateral shunt pipe, the second large ring, the vertical shunt pipe and the third large ring are connected in sequence;

The vertical shunt pipe and the second large ring are not on the same level;

The third large ring communicates with the cooling wall water pipe.

Further, the vertical shunt pipe is perpendicular to the second large ring;

The second large ring and the third large ring have the same central axis and the same diameter.

满足该关系可以保证水流在各类型水管中流动时，水速不出现突变；Further, the relationship between the inner diameters of the third large ring, the second large ring and the vertical shunt pipe is as follows:

Satisfying this relationship can ensure that the water velocity does not change abruptly when the water flows in various types of water pipes;

Wherein, D1 is the inner diameter of the third large ring, D2 is the inner diameter of the second large ring, d is the inner diameter of the vertical shunt pipe, and N is the number of blast furnace cooling walls when one circle around the blast furnace.

Further, the number of the vertical shunt pipes and the cooling wall water pipes are the same and are equally spaced and staggered;

The number of the vertical shunt pipes and the transverse shunt pipes are the same and are equally spaced and staggered.

Further, the number of the vertical shunt pipes is M*N (1≤M≤6, preferably M=4). At the same time,

The number of the lateral shunt pipes is M*N;

M is the number of cooling stave water pipes on each blast furnace cooling stave, and N is the number of blast furnace cooling staves in one circle around the blast furnace.

Further, the value of N should be based on the actual size of the blast furnace and the actual size of the cooling stave as a reference, generally based on the actual number of cooling staves in a circle at the bottom of the blast furnace.

Further, the inner diameter of the vertical shunt pipe, the inner diameter of the lateral shunt pipe and the inner diameter of the cooling wall water pipe are the same.

Further, the cooling stave water inlet pipe and the vertical shunt pipe are both perpendicular to the horizontal plane and parallel to the blast furnace body, but they are arranged in a circular arrangement with dislocation and equidistant, on the same circumferential curved surface; The shape and position are similar, but the functions are different. The cooling wall inlet pipe is a water pipe in the cooling wall, which plays the role of cooling the blast furnace body; The water in the stave water pipes is more uniform.

Further, the inner diameter of the first large ring is the same as the inner diameter of the total water inlet, and the inner diameter of the total water inlet is larger than the inner diameter of the vertical branch pipe and the horizontal branch pipe, so as to reduce the total water inlet speed. .

Further, the valves (mainly piezoresistive) of each layer of blast furnace cooling stave must be at the same elevation position; and the joints (intersecting positions) of each cooling stave pipeline must be connected smoothly (with reasonable chamfers).

Another object of the present invention is to provide a blast furnace cooling system for cooling a blast furnace using the above-mentioned uniformly split water pipe structure, the system comprising two of the uniformly split water pipe structures, They are respectively set at the main water inlet and the main water outlet, and are mirror-symmetrical.

Further, the uniformly split water pipe structure adopted by the blast furnace cooling system cools the blast furnace and improves the service life of the blast furnace.

Another object of the present invention is to provide a method for optimizing the configuration of cooling water pipes in a blast furnace cooling system. The method first establishes a three-dimensional model of the blast furnace cooling system, and then numerically simulates it by using the existing ANSYS software; The velocity of several velocity measuring points in the flow field is used to calculate the non-uniformity of water flow under the conditions of different inlet numbers and different inlet angles. The improvement of the water supply mode of the blast furnace cooling system is realized, and the finally obtained water supply mode is the above-mentioned uniformly split water pipe structure.

Further, by detecting the velocity of several velocity measuring points in the simulated water flow field, the unevenness of the water flow under the condition of different water inlet numbers and different inlet angle conditions is calculated, including:

Determine several velocity measuring points in the simulated water flow field: set S velocity measuring points in S zones (each zone includes several cold zone walls) in the circumferential direction of the blast furnace (of course, one velocity measuring point can also be set for each cooling water pipe), measure The flow velocity is v _i , where i=1,2,3,...,S;

Calculate the mean and variance of the velocity in the S regions:

The average speed is expressed in μ, then:

The velocity variance of the S regions is represented by D, then:

Calculate unevenness: Calculate the unevenness of the water flow field using the following formula:

Among them, K is the unevenness, D is the variance value of the S speed data, and μ represents the average speed of the S speed point data.

Further, the water flow field refers to the water flow field during the period from which the flowing water enters from the general water inlet until it flows out from the blast furnace cooling water outlet.

Further, to calculate the non-uniformity of the water flow under the conditions of different inlet numbers, the ANSYS software is used to simulate and analyze the water supply mode of a circle of transverse shunt pipe structures under the conditions of different inlet numbers, and extract the water from each velocity measurement point in the circumferential direction. The velocity data is calculated, and the non-uniformity under the condition of different inlet numbers is calculated to analyze the uniformity of the water flow field.

Further, the non-uniformity of water flow under different inlet angle conditions is calculated by using the ANSYS software on the basis of the water supply mode of a circle of lateral shunt pipe structure, by changing the water inlet angle of the total water inlet, to compare and analyze different inlet conditions. Under the unevenness, so as to obtain the optimal water supply angle.

Figure 6 is a comparison diagram of the water supply mode of a circle of lateral shunt pipe structures under different inlet angle conditions. Through simulation analysis, along the circumferential direction, the velocity values are extracted from each velocity measuring point in the water flow field, and the inhomogeneity of each model under different inlet angles is calculated to analyze the uniformity of the water flow field.

The present invention has the following beneficial technical effects:

(1) The method for optimizing the configuration of cooling water pipes in a blast furnace cooling system of the present invention makes up for the research gap in the blast furnace cooling system in terms of the uniformity of water distribution in the furnace body.

(2) The water supply method of the uniformly split water pipe structure of the present invention greatly improves the uniformity of water distribution in the blast furnace cooling system in the circumferential direction of the blast furnace body, thereby reducing the damage rate of the blast furnace and improving the use of the blast furnace. life.

(3) The evenly split water pipe structure of the present invention has only one general water inlet and outlet pipes (one general water inlet and one general water outlet), so the layout of the pipes is simple and the construction difficulty is small.

Description of drawings

FIG. 1 is a schematic diagram of the water pipe structure of the single-inlet direct water supply mode in the background technology of the present invention.

FIG. 2A is a schematic diagram of the water pipe structure of the double-inlet direct water supply mode in the background art of the present invention.

FIG. 2B is a schematic diagram of the water pipe structure of the multi-inlet direct water supply mode in the background art of the present invention.

3 is a schematic diagram of a water pipe structure of a water supply mode with a single-inlet and one-circle lateral shunt pipe structure in the background art of the present invention.

FIG. 4 is a schematic diagram comparing the water supply modes of a circle of transverse shunt pipe structures under different inlet numbers of a method for optimizing the configuration of cooling water pipes in a blast furnace cooling system according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a water pipe structure with uniform distribution in an embodiment of the present invention.

FIG. 6 is a schematic diagram of analysis and comparison of unevenness under different inlet angle conditions in a method for optimizing the configuration of cooling water pipes in a blast furnace cooling system according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of a water pipe structure with uniform distribution according to an embodiment of the present invention.

Description of reference numerals: 1 is the first large ring; 2 is the lateral shunt pipe; 3 is the vertical shunt pipe; 4 is the second large ring; 5 is the third large ring; 6 is the cooling wall water pipe.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

On the contrary, the present invention covers any alternatives, modifications, equivalents and arrangements within the spirit and scope of the present invention as defined by the appended claims. Further, in order to give the public a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

Example 1

At present, the water supply method adopted by the domestic blast furnace cooling system is not uniform in the circumferential direction and the vertical direction, so it is urgent to improve the water supply method of the blast furnace cooling system. And at present, there are few studies on the uniformity of blast furnace water supply system at home and abroad, and the research mainly focuses on the small set of tuyere, blast furnace water station monitoring and water supply stability. is blank.

To this end, this embodiment provides a method for optimizing the configuration of cooling water pipes in a blast furnace cooling system. The method first establishes a three-dimensional model of the blast furnace cooling system, and then performs numerical simulation on it by using the existing ANSYS software; The velocity of several velocity measuring points in the flow field is used to calculate the non-uniformity of water flow under the conditions of different inlet numbers and different inlet angles. The improvement of the water supply mode of the blast furnace cooling system is realized, and the best water supply mode and the corresponding water pipe structure with uniform distribution are finally obtained.

In this embodiment, by detecting the velocity of several velocity measuring points in the simulated water flow field, the unevenness of the water flow under the condition of different water inlet numbers and different inlet angle conditions is calculated respectively, including:

Determine several velocity measuring points in the simulated water flow field: set S velocity measuring points in S zones (each zone contains several cold zone walls) in the circumferential direction of the blast furnace (of course, one velocity measuring point can also be set for each cooling water pipe), measure The flow velocity is v _i , where i=1,2,3,...,S;

Calculate the mean and variance of the velocity in the S regions:

The average speed is expressed in μ, then:

The velocity variance of the S regions is represented by D, then:

Calculate unevenness: Calculate the unevenness of the water flow field using the following formula:

Among them, K is the unevenness, D is the variance value of S speed data, μ represents S speed data

Average velocity of point data.

In this embodiment, the water flow field refers to the water flow field during the period from which the flowing water enters from the general water inlet until it flows out from the blast furnace cooling water outlet.

(1) To calculate the non-uniformity of water flow under the conditions of different inlet numbers, the ANSYS software is used to simulate and analyze the water supply mode of a circle of lateral shunt pipe structures under the conditions of different inlet numbers. The velocity data is calculated, and the non-uniformity under the condition of different inlet numbers is calculated to analyze the uniformity of the water flow field.

Calculate the non-uniformity of water flow under the condition of different number of water inlets, the details are as follows:

Simulate and analyze the water supply mode of a circle of lateral shunt pipe structures under the conditions of different inlet numbers, as shown in Figure 4, the velocity data extracted from each velocity measurement point in the circumferential direction, and calculate the unevenness under the conditions of different inlet numbers , the water flow field uniformity analysis is carried out, as shown in Table 1 below.

Table 1 Comparison table of unevenness under different inlet conditions

Through the comparative analysis of the non-uniformity under the conditions of different import numbers, the following important conclusions are drawn:

1) The change trend of the water flow in the inner ring is the same as that of the water flow in the outer ring. However, the uniformity of water flow in the inner ring is higher than that in the outer ring, because the uniformity of the water flow in the inner ring is affected by the uniform distribution of the middle and transverse water distribution pipes, which improves the uniformity of the inner ring.

2) The uniformity of the inner ring is mainly affected by the uniformity of the outer ring, and secondly, it is also affected by the uniform distribution of the intermediate water distribution pipe. Increasing the number of water inlets can increase the uniformity of the outer large ring, thereby improving the uniformity of the inner ring. . That is to say, the effect of increasing the number of water inlets on the outer pipe is the same as the effect of the horizontal water distribution pipe on the inner ring.

To sum up, it can be seen that adding several water inlets uniformly has the same effect as setting a horizontal water distribution pipe on one layer. Therefore, in order to avoid adding multiple water inlets to increase the complexity of the pipeline layout, a circle of horizontal water distribution pipes is added to the water supply method of the original horizontal water distribution pipe structure to reduce the unevenness of the outer ring pipe. This in turn improves the uniformity of the inner ring. As a result, the water supply mode of the single-inlet two-layer lateral water distribution pipe structure shown in Figure 5 is obtained. This water supply mode greatly improves the uniformity of water distribution in the innermost ring through the two uniform distributions of the lateral distribution pipe. The water pipe structure is shown in Figure 5.

(2) To calculate the non-uniformity of water flow under different inlet angle conditions, the ANSYS software is used to compare and analyze different inlet conditions by changing the water inlet angle of the total water inlet on the basis of the water supply mode of a circle of lateral shunt pipe structure. Under the unevenness, so as to obtain the optimal water supply angle.

The non-uniformity of water flow under different inlet angles is calculated, and the specific analysis contents are as follows:

Based on the water supply mode of a circle of lateral shunt pipe structure, by changing the water inlet angle of the water inlet, the non-uniformity under different inlet conditions is compared and analyzed, so as to obtain the optimal water supply angle. As shown in Figure 6, Figure 6 is a comparison diagram of the water supply mode of a circle of lateral shunt pipe structures under the conditions of different inlet angles of 0°/30°/60°/90°. Through simulation analysis, along the circumferential direction, the velocity values are extracted from each velocity measurement point in the water flow field, and the inhomogeneity of each model under the condition of different inlet angles is calculated, and the uniformity of the water flow field is analyzed. The results are shown in Table 2 below. Show.

Table 2 Comparison table of unevenness under different inlet angle conditions

Through the analysis of the non-uniformity of water flow under different inlet angle conditions, the following important conclusions are drawn:

1) Increasing the water inlet angle can increase its average speed and reduce the relative volatility, thereby reducing the unevenness.

2) Through the analysis of the water inlet angle in the direction of the 0°/30°/60°/90° cooling wall water pipe, with the continuous increase of the water inlet angle, the non-uniformity gradually decreases, and the water distribution is more uniform. The water inlet angle of 90° enters the water.

To sum up, on the basis of the water supply method of the two-circle horizontal water distribution pipe structure, the inner horizontal water distribution pipe is changed to a vertical water distribution pipe, thus forming a circle of horizontal water distribution pipe and a circle of longitudinal water distribution pipe structure for water supply. (as shown in Figure 7), this water supply method not only satisfies the uniform water distribution function of two circles of water distribution pipes, but also satisfies the 90° (vertical) water inlet angle of the inner ring, thereby greatly increasing the uniformity of water distribution. sex.

Of course, the number of water inlets can also be further increased, and it becomes a water supply method with one more horizontal water distribution pipe and one vertical water distribution pipe structure. On the one hand, doing so will increase the complexity of the pipeline layout and make the construction difficult; On the one hand, the water supply method of a single-entry horizontal water distribution pipe and a vertical water distribution pipe structure has a high internal uniformity, which meets the requirements of uniform water distribution. It is not recommended to increase the number of water inlets.

Example 2

As shown in FIG. 7 , the method for optimizing the configuration of cooling water pipes in the blast furnace cooling system described in Embodiment 1 is used to obtain a water pipe structure with uniform distribution, and the water pipe structure with uniform distribution includes:

a first large ring, the first large ring is connected to the total water inlet/total water outlet and the inner diameter of the first large ring is the same as the total water inlet/total water outlet inner diameter;

Lateral shunt;

vertical shunt;

a second large ring, the second large ring is connected with the vertical shunt pipe and the lateral shunt pipe;

The third large ring, the third large ring is connected with the vertical shunt pipe and the cooling wall water pipe;

The first large ring, the lateral shunt pipe, the second large ring, the vertical shunt pipe and the third large ring are connected in sequence;

The vertical shunt pipe and the second large ring are not on the same level;

The third large ring communicates with the cooling wall water pipe.

In this embodiment, the vertical shunt pipe is perpendicular to the second large ring;

The second large ring and the third large ring have the same central axis and the same diameter.

满足该关系可以保证水流在各类型水管中流动时，水速不出现突变；In this embodiment, the relationship between the inner diameters of the third large ring, the second large ring and the vertical shunt pipe is as follows:

Satisfying this relationship can ensure that the water velocity does not change abruptly when the water flows in various types of water pipes;

Wherein, D1 is the inner diameter of the third large ring, D2 is the inner diameter of the second large ring, d is the inner diameter of the vertical shunt pipe, and N is the number of blast furnace cooling walls when one circle around the blast furnace.

In this embodiment, the vertical shunt pipes and the cooling wall water pipes have the same number and are equally spaced and staggered;

The number of the vertical shunt pipes and the transverse shunt pipes are the same and are equally spaced and staggered.

In this embodiment, the number of the vertical shunt pipes is M*N (1≤M≤6, preferably M=4). At the same time,

The number of the lateral shunt pipes is M*N;

M is the number of cooling stave water pipes on each blast furnace cooling stave, and N is the number of blast furnace cooling staves in one circle around the blast furnace.

The value of N should be based on the actual size of the blast furnace and the actual size of the cooling stave as a reference, generally based on the actual number of cooling staves in a circle at the bottom of the blast furnace.

In this embodiment, the inner diameter of the vertical shunt pipe, the inner diameter of the transverse shunt pipe and the inner diameter of the cooling wall water pipe are the same.

In this embodiment, the cooling stave water inlet pipe and the vertical shunt pipe are both perpendicular to the horizontal plane and parallel to the blast furnace body, but they are arranged in a circular arrangement that is staggered and equidistant from each other, on the same circumferential surface; although The shape and position of the two are similar, but their functions are different. The cooling wall inlet pipe is a water pipe in the cooling wall, which plays the role of cooling the blast furnace body; The existence of the water makes the water in the cooling wall water pipe more uniform.

In this embodiment, the inner diameter of the first large ring is the same as the inner diameter of the total water inlet, and the inner diameter of the total water inlet is larger than the inner diameter of the vertical branch pipe and the horizontal branch pipe, so as to reduce the overall water inlet speed.

In this embodiment, the valves (mainly piezoresistance) of each layer of blast furnace cooling stave must be at the same elevation; and, at the junction (intersecting position) of each cooling stave pipeline, it must be connected smoothly (with reasonable chamfers) .

The method for optimizing the configuration of cooling water pipes in a blast furnace cooling system in this embodiment makes up for the research gap of the blast furnace cooling system in terms of the uniformity of water distribution in the furnace body; The water distribution uniformity of the blast furnace cooling system in the circumferential direction of the blast furnace body is improved, thereby reducing the damage rate of the blast furnace and increasing the service life of the blast furnace.

In addition, the uniformly split water pipe structure of this embodiment has only one general water inlet and outlet pipes, so the layout of the pipes is simple and the construction difficulty is small.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (4)

1. A water pipe structure for uniform distribution, characterized in that, the water pipe structure for uniform distribution comprises: a first large ring, the first large ring is connected to the total water inlet/total water outlet and the inner diameter of the first large ring is the same as the total water inlet/total water outlet inner diameter; Lateral shunt; vertical shunt; a second large ring, the second large ring is connected with the vertical shunt pipe and the lateral shunt pipe; The third large ring, the third large ring is connected with the vertical shunt pipe and the cooling wall water pipe; The first large ring, the lateral shunt pipe, the second large ring, the vertical shunt pipe and the third large ring are connected in sequence; The third large ring is communicated with the cooling wall water pipe; the vertical shunt is perpendicular to the second large ring; The second large ring and the third large ring have the same central axis and the same diameter; The relationship between the inner diameters of the third large ring, the second large ring and the vertical shunt pipe is as follows:

Wherein, D1 is the inner diameter of the third large ring, D2 is the inner diameter of the second large ring, d is the inner diameter of the vertical shunt pipe, and N is the number of blast furnace cooling walls when one circle around the blast furnace; The number of the vertical shunt pipes and the cooling wall water pipes are the same and are equally spaced and staggered; The number of the vertical shunt pipes and the horizontal shunt pipes are the same and are equally spaced and staggered; The inner diameter of the vertical shunt pipe, the inner diameter of the transverse shunt pipe and the inner diameter of the cooling wall water pipe are the same. 2 . A blast furnace cooling system for cooling a blast furnace using the uniformly split water pipe structure according to claim 1 , wherein the system comprises two of the uniformly split water pipe structures, and two of the uniformly split water pipe structures are used for cooling the blast furnace. 3 . The water pipe structures are respectively arranged at the main water inlet and the main water outlet, which are mirror-symmetrical. 3. a method for optimizing the configuration of cooling water pipes in a blast furnace cooling system, wherein the method first establishes a three-dimensional model of the blast furnace cooling system comprising the cooling water pipe structure, and then performs numerical simulation on it by software; by detecting the simulated blast furnace Calculate the speed of several velocity measuring points in the water flow field of the cooling system, and calculate the unevenness of the water flow under the conditions of different inlet numbers and different inlet angles; quantitatively compare the uniformity of different water supply methods according to the value of the unevenness. The optimized cooling water pipe structure described in claim 1. 4. the method for optimizing the configuration of cooling water pipes in a blast furnace cooling system according to claim 3, is characterized in that, described by detecting the speed of some velocity measuring points of the blast furnace cooling system water flow field of simulation, calculate the number of different water inlets respectively Condition and under different inlet angle conditions, including: Determine several velocity measuring points in the simulated water flow field: set S velocity measuring points in S zones in the circumferential direction of the blast furnace, and measure the running water velocity as v _i , where i=1, 2, 3,...,S; Calculate the mean and variance of the velocity in the S regions: The average speed is expressed in μ, then:

The velocity variance of the S regions is represented by D, then:

Calculate unevenness: Calculate the unevenness of the water flow field using the following formula:

where K is the inhomogeneity.

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