阅读说明：本技术 一种高炉冷却壁漏水状况的检查装置、检查方法及高炉 (Device and method for checking water leakage condition of cooling wall of blast furnace and blast furnace ) 是由 卢正东 郭大磊 张正东 肖志新 胡正刚 李红 刘栋梁 于 2021-07-09 设计创作，主要内容包括：本发明公开一种高炉冷却壁漏水状况的检查装置,涉及高炉检修技术领域,解决了相关技术中高炉冷却壁漏水检查由于冷却管数量多、分段多而存在检查繁琐、耗时长、存在安全隐患的技术问题。多个第一通断阀一端分别与多根冷却管的底端一一连接,另一端均连接第一集水环管,多个第二通断阀一端分别与多根冷却管的顶端一一连接,另一端均连接第二集水环管,液位显示管沿竖向布置,液位显示管两端分别与第一集水环管和第二集水环管连通。本检查装置利用一个增设的液位显示管,即可快速对所有冷却管完成漏水检查,无需多余的注水装置,具有改造成本低的特点,直接通过液位显示漏水区域,极大地提高工作效率,且降低了工人在煤气区域作业的工作风险。(The invention discloses a device for checking water leakage condition of a cooling wall of a blast furnace, relates to the technical field of blast furnace maintenance, and solves the technical problems of complex checking, long time consumption and potential safety hazard in water leakage checking of the cooling wall of the blast furnace in the related technology due to the fact that the number of cooling pipes is large and the number of cooling pipes is large in sections. A plurality of first on-off valves one end respectively with the bottom one-to-one of many cooling tubes, first ring canal that catchments is all connected to the other end, a plurality of second on-off valves one end respectively with the top one-to-one of many cooling tubes, the second ring canal that catchments is all connected to the other end, liquid level display pipe along vertical arrangement, liquid level display pipe both ends communicate with first ring canal and second ring canal that catchments respectively. This inspection device utilizes a liquid level display pipe of addding, can accomplish the inspection of leaking to all cooling tubes fast, need not unnecessary water injection device, has the characteristics of transforming with low costs, directly leaks the region through liquid level display, greatly improves work efficiency, and has reduced the work risk of workman at the regional operation of coal gas.)

1. The utility model provides an inspection device of blast furnace stave condition of leaking which characterized in that, blast furnace stave includes many cooling tubes of vertical arrangement, many the cooling tube is to interval arrangement in proper order along the blast furnace ring, inspection device includes:

the water inlet valves are respectively connected with the bottom ends of the cooling pipes one by one;

the water outlet valves are respectively connected with the top ends of the cooling pipes one by one;

the pressure gauges are respectively arranged on the cooling pipes one by one;

a first water collecting ring pipe;

one ends of the first on-off valves are respectively connected with the bottom ends of the cooling pipes one by one and connected between the water inlet valves and the cooling pipes, and the other ends of the first on-off valves are connected with the first water collecting ring pipe;

a second water collecting ring pipe;

one ends of the second on-off valves are respectively connected with the top ends of the cooling pipes one by one and connected between the water outlet valves and the cooling pipes, and the other ends of the second on-off valves are connected with the second water collecting ring pipes; and

and the liquid level display pipe is vertically arranged, the bottom end of the liquid level display pipe is communicated with the first water collecting ring pipe, and the top end of the liquid level display pipe is communicated with the second water collecting ring pipe, so that the water leakage area of the cooling pipe is displayed through liquid level when the first on-off valve and the second on-off valve which are connected with one cooling pipe are in an open state.

2. The apparatus for inspecting water leakage of a cooling stave of a blast furnace according to claim 1, wherein said liquid level display pipe is made of a transparent material.

3. The apparatus for inspecting a water leakage condition of a blast furnace stave according to claim 2 wherein said liquid level display pipe comprises a glass pipe.

4. The apparatus for inspecting water leakage of a stave of a blast furnace as set forth in claim 1, wherein a float is provided in said liquid level display pipe for displaying a liquid level in said pipe.

5. The apparatus for inspecting a water leakage condition in a cooling stave of a blast furnace according to claim 1, wherein each of the first on-off valve and the second on-off valve is a gate valve.

6. The apparatus for inspecting water leakage of a stave of a blast furnace as set forth in claim 1, wherein said liquid level display pipe is externally provided to the blast furnace.

7. The apparatus for inspecting water leakage of blast furnace stave according to claim 1 wherein said cooling pipe uses colored cooling water to enter said level display pipe for level display.

8. The apparatus for inspecting water leakage of a stave of a blast furnace according to claim 1 wherein a connection between said first on-off valve and said cooling pipe is located between said water inlet valve and said pressure gauge.

9. A method for inspecting a water leakage state of a cooling stave of a blast furnace, comprising the steps of using the apparatus for inspecting a water leakage state of a cooling stave of a blast furnace according to any one of claims 1 to 8:

finding that the water replenishing period of the blast furnace soft water system is accelerated, indicating that the water leakage phenomenon of the cooling wall of the blast furnace exists, damping down the blast furnace, and preparing to check the water leakage condition;

checking a first cooling pipe, closing the water inlet valve and the water outlet valve corresponding to the first cooling pipe, checking whether the indication number of the pressure gauge corresponding to the first cooling pipe changes, if the indication number of the pressure gauge does not change, indicating that no water leakage exists in the corresponding first cooling pipe, and if the indication number of the pressure gauge drops, indicating that water leakage exists in the first cooling pipe;

if the first cooling pipe has water leakage, the water inlet valve and the water outlet valve of the first cooling pipe are opened, and the first on-off valve and the second on-off valve connected to the first one of the cooling pipes are opened, the first on-off valve and the second on-off valve connected with other cooling pipes are in a closed state until the liquid level display pipe is filled with cooling water, closing the water inlet valve of the first cooling pipe, observing whether the liquid level in the liquid level display pipe changes or not, if the liquid level in the liquid level display pipe drops, indicating that water leakage occurs in the first cooling pipe and the area, corresponding to the liquid level height position of the liquid level display pipe, of the blast furnace cooling wall is a water leakage area, and closing the first on-off valve and the second on-off valve connected with the first cooling pipe after checking the first cooling pipe;

according to the first cooling pipe, performing water leakage inspection on other cooling pipes one by one to obtain a water leakage area;

overhauling and maintaining the water leakage area;

blast furnace air supply and production recovery.

10. A blast furnace comprising the blast furnace stave water leakage inspection device according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of blast furnace maintenance, in particular to a device and a method for checking water leakage condition of a cooling wall of a blast furnace and the blast furnace.

Background

The blast furnace cooling wall is an important component of blast furnace equipment, is arranged inside a blast furnace shell, and has the function of taking away heat in the furnace, protecting a furnace lining and maintaining a reasonable furnace type of the blast furnace. Because the interior of the blast furnace is in a high-temperature and high-pressure state, the descending high-temperature furnace burden and the iron slag and the ascending high-temperature coal gas flow are in a continuous fluctuation, the corrosion and the thinning of the cooling wall are caused, the damage and the water leakage of the cooling wall body can be caused in serious cases, a large amount of water supplement and the reduction of the furnace temperature of a cooling system are caused, the smooth operation of the blast furnace is influenced, and the reduction of the economic and technical indexes of the blast furnace is also caused.

At a certain 3200m³For example, as shown in fig. 1 and 2, a blast furnace has 16 cooling walls in the longitudinal direction and 192 water pipes in the transverse direction, and the conventional method for detecting water leakage of the cooling walls is to detect the water leakage section by section, and the detection steps are complicated. And the inspection personnel need to climb to the furnace top, and the inspection is carried out section by section from top to bottom, after 1 water pipe is inspected, the inspection personnel need to climb to the furnace top again, and the inspection is continuously carried out from top to bottom, so that the physical consumption is large, the work time is long, and the gas poisoning risk exists in the operation of a gas area.

Disclosure of Invention

The application provides an inspection device of blast furnace stave condition of leaking has solved blast furnace stave leak water inspection in the correlation technique and has had the technical problem that the inspection is loaded down with trivial details, consuming time is long, there is the potential safety hazard because cooling tube quantity is many, the segmentation is many.

The application provides a checking device for water leakage condition of a cooling wall of a blast furnace, the cooling wall of the blast furnace comprises a plurality of cooling pipes which are vertically arranged, the cooling pipes are sequentially arranged at intervals along the circumferential direction of the blast furnace, the checking device comprises a plurality of water inlet valves, a plurality of water outlet valves, a plurality of pressure meters, a plurality of first on-off valves, a first water collecting ring pipe, a plurality of second on-off valves, a second water collecting ring pipe and a liquid level display pipe, the water inlet valves are respectively connected with the bottom ends of the cooling pipes one by one, the water outlet valves are respectively connected with the top ends of the cooling pipes one by one, the pressure meters are respectively arranged on the cooling pipes one by one, one ends of the first on-off valves are respectively connected with the bottom ends of the cooling pipes one by one and are connected between the water inlet valves and the cooling pipes, the other ends of the first on-off valves are respectively connected with the top ends of the cooling pipes one by one and are connected between the water outlet valves and the cooling pipes, the other end of the cooling pipe is connected with a second water collecting ring pipe, the liquid level display pipe is vertically arranged, the bottom end of the liquid level display pipe is communicated with the first water collecting ring pipe, and the top end of the liquid level display pipe is communicated with the second water collecting ring pipe, so that the water leakage area of the cooling pipe is displayed through the liquid level when the first on-off valve and the second on-off valve which are connected with one cooling pipe are in an open state.

Optionally, the liquid level display tube is made of a transparent material.

Optionally, the liquid level display tube comprises a glass tube.

Optionally, a float ball is disposed in the liquid level display tube to display the liquid level in the tube.

Optionally, the first on-off valve and the second on-off valve are both gate valves.

Optionally, the liquid level display pipe is arranged outside the blast furnace.

Optionally, the cooling pipe adopts colored cooling water to enter the liquid level display pipe for liquid level display.

Optionally, the connection between the first on-off valve and the cooling pipe is located between the water inlet valve and the pressure gauge.

The method for inspecting the water leakage condition of the cooling wall of the blast furnace adopts the device for inspecting the water leakage condition of the cooling wall of the blast furnace, and comprises the following steps:

finding that the water replenishing period of the blast furnace soft water system is accelerated, indicating that the water leakage phenomenon of a cooling wall of the blast furnace exists, damping down the blast furnace, and preparing to check the water leakage condition;

checking the first cooling pipe, closing a water inlet valve and a water outlet valve corresponding to the first cooling pipe, checking whether the indication number of a pressure gauge corresponding to the first cooling pipe changes, if the indication number of the pressure gauge does not change, indicating that the first cooling pipe does not leak water, and if the indication number of the pressure gauge drops, indicating that the first cooling pipe leaks water;

if the first cooling pipe has water leakage, opening a water inlet valve and a water outlet valve of the first cooling pipe, opening a first on-off valve and a second on-off valve which are connected with the first cooling pipe, closing the water inlet valve of the first cooling pipe until a liquid level display pipe is filled with cooling water, observing whether the liquid level in the liquid level display pipe changes, if the liquid level in the liquid level display pipe drops, indicating that the first cooling pipe has water leakage, wherein the area of a blast furnace cooling wall corresponding to the liquid level height position of the liquid level display pipe is a water leakage area, and closing the first on-off valve and the second on-off valve which are connected with the first cooling pipe after checking the first cooling pipe;

according to the inspection of the first cooling pipe, performing water leakage inspection on other cooling pipes one by one to obtain a water leakage area;

repairing and maintaining the water leakage area;

blast furnace air supply and production recovery.

A blast furnace comprises the device for detecting the water leakage condition of the cooling wall of the blast furnace.

The beneficial effect of this application is as follows: the application discloses a checking device for water leakage condition of a blast furnace cooling wall, which is characterized in that a first water collecting ring pipe and a second water collecting ring pipe are additionally arranged, the first water collecting ring pipe is arranged close to a water inlet end of a cooling pipe, the second water collecting ring pipe is arranged close to a water outlet end of the cooling pipe, one ends of a plurality of first on-off valves are respectively connected with the bottom ends of a plurality of cooling pipes one by one and are connected between a water inlet valve and the cooling pipe, the other ends of the first on-off valves are respectively connected with the first water collecting ring pipe, one ends of a plurality of second on-off valves are respectively connected with the top ends of a plurality of cooling pipes one by one and are connected between a water outlet valve and the cooling pipe, the other ends of the second on-off valves are respectively connected with the second water collecting ring pipe, when the water leakage condition of the blast furnace cooling wall is found, the water inlet valve and the water outlet valve are firstly closed and are quickly judged according to the cooling pipe with water leakage according to a pressure gauge, then the water inlet valve and the water inlet of the cooling wall is utilized to fully hold cooling pipe, the inlet valve is closed to the back, the liquid level display pipe constitutes the linker for the cooling tube that appears leaking with aforementioned judgement, according to the linker principle according to the liquid level position of specifically leaking of interior liquid level display pipe of liquid level display, detect all cooling tubes one by one, this inspection device utilizes a liquid level display pipe of addding, can accomplish the inspection of leaking to all cooling tubes that a large amount is many fast, need not unnecessary water injection device, can improve current blast furnace stave, have the characteristics of transforming with low costs, it is regional directly to leak through the liquid level display, greatly improve work efficiency, and the work risk of workman at the regional operation of coal gas has been reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

FIG. 1 is a schematic view of a blast furnace body and a stave in the related art;

fig. 2 is a schematic view of a stave pipe network of the related art.

FIG. 3 is a schematic view of an apparatus for inspecting a water leakage condition of a cooling stave of a blast furnace according to the present invention;

FIG. 4 is a schematic view of a cooling stave pipe network of the apparatus for inspecting a water leakage condition of a blast furnace cooling stave according to the present invention;

fig. 5 is a schematic flow chart of a method for checking a water leakage condition of a cooling stave of a blast furnace according to the present invention.

The attached drawings are marked as follows: 100-furnace body, 110-section 1 cooling wall, 120-sections 2 to 15 cooling wall, 130-section 16 cooling wall, 140-exhaust valve, 200-cooling pipe, 300-water inlet valve, 400-water outlet valve, 500-pressure gauge, 600-first water collecting ring pipe, 610-first on-off valve, 700-second water collecting ring pipe, 710-second on-off valve and 800-liquid level display pipe.

Detailed Description

The embodiment of the application provides an inspection device of blast furnace stave condition of leaking, has solved blast furnace stave leak water inspection in the correlation technique because cooling tube quantity is many, the segmentation is many and have the technical problem that the inspection is loaded down with trivial details, consuming time is long, there is the potential safety hazard.

In order to solve the technical problems, the general idea of the embodiment of the application is as follows:

a checking device for water leakage of a blast furnace cooling wall comprises a plurality of cooling pipes which are vertically arranged, the cooling pipes are sequentially arranged at intervals along the circumferential direction of a blast furnace, the checking device comprises a plurality of water inlet valves, a plurality of water outlet valves, a plurality of pressure meters, a plurality of first on-off valves, a first water collecting ring pipe, a plurality of second on-off valves, a second water collecting ring pipe and a liquid level display pipe, the water inlet valves are respectively connected with the bottom ends of the cooling pipes one by one, the water outlet valves are respectively connected with the top ends of the cooling pipes one by one, the pressure meters are respectively arranged on the cooling pipes one by one, one ends of the first on-off valves are respectively connected with the bottom ends of the cooling pipes one by one and are connected between the water inlet valves and the cooling pipes, the other ends of the first water collecting ring pipe are respectively connected with the top ends of the second on-off valves are respectively connected with the top ends of the cooling pipes one by one and are connected between the water outlet valves and the cooling pipes, the other end of the cooling pipe is connected with a second water collecting ring pipe, the liquid level display pipe is vertically arranged, the bottom end of the liquid level display pipe is communicated with the first water collecting ring pipe, and the top end of the liquid level display pipe is communicated with the second water collecting ring pipe, so that the water leakage area of the cooling pipe is displayed through the liquid level when the first on-off valve and the second on-off valve which are connected with one cooling pipe are in an open state.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Example 1

Referring to fig. 1 and fig. 2, a piping system of a cooling wall and an inspection method thereof in the related art are shown. Fig. 1 shows that a blast furnace cooling wall is arranged in a blast furnace body 100, and comprises a 1 st section cooling wall 110, 2 nd to 15 th sections cooling walls 120 and a 16 th section cooling wall 130 from bottom to top, in this way, 16 sections of cooling walls are longitudinally arranged, and 192 water pipes are transversely arranged for illustration.

The method for checking the water leakage of the cooling wall in the related art is to check the water leakage section by section. As shown in fig. 2, the specific steps are as follows:

(1) the water replenishing period of the blast furnace soft water system is found to be accelerated, which shows that the cooling wall water leakage phenomenon exists;

(2) the inspection is started from the water pipe No. 1 (all the cooling pipes 200 are numbered and distinguished at the top of FIG. 2), the water inlet valve 300 at the 1 st section of the water pipe No. 1 and the water outlet valve 400 at the 16 th section of the water pipe No. 1 are closed, and the pressure gauge 500 above the water inlet valve 300 at the 1 st section of the water pipe No. 1 is inspected. If the pressure gauge 500 is kept unchanged, no water leakage of the No. 1 water pipe is indicated; if the pressure gauge 500 gradually descends, water leakage exists in the No. 1 water pipe;

(3) after the water pipe 1 is judged to leak water, the exhaust valve 140 positioned below the 16-section cooling wall of the water pipe 1 is opened, water flow is discharged at the moment, and according to the principle of a communicating vessel, if 16 sections of areas leak water, the water level and the liquid level of the final water level stay at the pipe orifice horizontal plane of the exhaust valve 140; if the water level continuously drops below the nozzle of the exhaust valve 140 (the drop of the liquid level at the nozzle can be directly observed by naked eyes), the water leakage area is proved to be below the 16 sections; then the exhaust valve 140 below the 15 sections is opened, the water level is continuously observed, and if the water level stays at the pipe orifice level of the exhaust valve 140 below the 15 sections, the water leakage area is proved to be located at the 15 th section; if the water level continuously drops below the nozzle of the exhaust valve 140 below the 15 sections, the water leakage area is proved to be below the 15 sections; and then, sequentially checking by adopting the method, if the water level is positioned at the pipe orifice of a certain exhaust valve 140, indicating that the water leakage area is positioned on the cooling wall corresponding to the exhaust valve 140, and then overhauling and maintaining the corresponding cooling wall area of the No. 1 water pipe.

(4) Continuously adopting the steps (2) and (3) to inspect the 2 nd to the 192 nd water pipes, inspecting all water pipes and regions with water leakage, and performing overhaul and maintenance;

(5) and (5) checking, finishing maintenance, supplying air to the blast furnace, and recovering normal production.

The blast furnace cooling wall shown in the figures 1 and 2 and the water leakage inspection mode of the blast furnace cooling wall have the advantages that as the vertical height of the blast furnace cooling wall is large, the number of cooling pipes 200 is large, the number of sections of the multi-section cooling wall divided by the cooling pipes 200 is large, the inspection is carried out section by section one by one, the inventor finds that the inspection steps are complex, an inspector is required to climb to the furnace top and inspect section by section from top to bottom, after 1 water pipe is inspected, the blast furnace cooling wall needs to climb to the furnace top again, the inspection is continued from top to bottom, the physical consumption is large, the labor consumption is long, and the gas poisoning risk exists in the operation of a gas area.

The inventor has invented a device for inspecting the water leakage condition of the cooling wall of the blast furnace.

Specifically, the cooling wall of the blast furnace includes a plurality of cooling pipes 200 vertically arranged, the plurality of cooling pipes 200 are sequentially arranged at intervals along the circumferential direction of the blast furnace, referring to fig. 3, in the inspection apparatus of this embodiment, a second water collecting ring pipe 700, a first water collecting ring pipe 600 and a liquid level display pipe 800 are respectively arranged at the upper and lower ends of the cooling pipe 200, and both ends of the liquid level display pipe are respectively communicated with the second water collecting ring pipe 700 and the first water collecting ring pipe 600.

It should be noted that the vertical arrangement in the present embodiment includes a vertical arrangement in the vertical direction, and may also be a slightly inclined vertical arrangement.

Referring to fig. 4, the inspection apparatus includes a plurality of inlet valves 300, a plurality of outlet valves 400, a plurality of pressure gauges 500, a plurality of first on/off valves 610, a first collecting loop 600, a plurality of second on/off valves 710, a second collecting loop 700, and a liquid level display tube 800. The plurality of water inlet valves 300 are respectively connected with the bottom ends of the plurality of cooling pipes 200 one by one, the plurality of water outlet valves 400 are respectively connected with the top ends of the plurality of cooling pipes 200 one by one, the plurality of pressure gauges 500 are respectively arranged on the plurality of cooling pipes 200 one by one, and the pressure gauges 500 are correspondingly arranged between the water inlet valves 300 and the water outlet valves 400.

One end of each of the first on-off valves 610 is connected to the bottom ends of the cooling pipes 200 one by one and connected between the water inlet valve 300 and the cooling pipe 200, and the other end of each of the first on-off valves is connected to the first water collecting loop 600. One ends of the second on-off valves 710 are respectively connected with the top ends of the cooling pipes 200 one by one and connected between the water outlet valve 400 and the cooling pipes 200, and the other ends are connected with the second collecting ring pipe 700.

The liquid level display pipe 800 is vertically arranged, the bottom end of the liquid level display pipe 800 is communicated with the first water collecting circular pipe 600, and the top end of the liquid level display pipe 800 is communicated with the second water collecting circular pipe 700, so that the water leakage area of the cooling pipe 200 is displayed through the liquid level when the first on-off valve 610 and the second on-off valve 710 connected with the single cooling pipe 200 are in an open state.

When the water leakage condition of the cooling wall of the blast furnace is found, the water inlet valve 300 and the water outlet valve 400 are firstly closed, the specific cooling pipe 200 with water leakage is quickly judged according to the pressure gauge 500, and whether the water leakage condition occurs or not is firstly detected for each cooling pipe 200 through the pressure gauge 500. Specifically, the bottom water inlet valve 300 and the top water outlet valve 400 corresponding to the cooling pipe 200 are closed, and the display data change of the pressure gauge 500 is observed, which can be partially referred to fig. 5. When the indication number of the pressure gauge 500 is not changed, the cooling pipe 200 is indicated to have good sealing performance and no water leakage condition; when the indication of the pressure gauge 500 changes and decreases, it indicates that there is a water leakage condition in the cooling pipe 200, and a water leakage area needs to be further determined.

When the water leakage condition of a single cooling pipe 200 is determined, the water inlet valve 300 and the water outlet valve 400 corresponding to the cooling pipe 200 are opened, the first on-off valve 610 and the second on-off valve 710 corresponding to the cooling pipe 200 are opened, the cooling pipe 200 is communicated with the liquid level display pipe 800, cooling water enters the water inlet valve 300, and the liquid level display pipe 800 is filled with the cooling water. Next, the water inlet valve 300 is closed, the liquid level display tube 800 and the cooling tube 200 which is judged to have water leakage form a communicating vessel, and the specific water leakage position can be quickly determined according to the liquid level in the liquid level display tube 800 according to the principle of the communicating vessel.

By adopting the steps, the rapid detection of the pressure gauge 500 is matched with the rapid positioning of the liquid level display tube 800, and all the cooling tubes 200 are detected one by one. The inspection device can quickly finish the water leakage inspection on all cooling pipes 200 with large quantity by utilizing the additionally arranged liquid level display pipe 800, and is not influenced by the complexity of multiple sections of the cooling wall compared with the scheme in figure 2. And the liquid level display tube 800 in the inspection device does not need to be additionally provided with a water injection device, and can complete water injection operation by opening the corresponding water inlet valve 300, thereby providing support for the subsequent communicating vessel principle to display the specific water leakage position through the liquid level.

The inspection device can be used for improving the existing blast furnace cooling wall, has the characteristic of low transformation cost, and only needs to add one liquid level display pipe 800 and the corresponding first on-off valve 610 and the second on-off valve 710. This inspection device can directly show the region of leaking through the liquid level, greatly improves work efficiency, and has reduced the work risk of workman in the regional operation of coal gas.

In order to facilitate observing the liquid level change of the liquid level display tube 800, the liquid level display tube 800 may be made of a transparent material, such as a glass tube. And a floating ball can be arranged in the liquid level display tube 800, so that the liquid level change condition can be further displayed through the floating ball.

Optionally, the first on-off valve 610 and the second on-off valve 710 are adapted to open and close the pipeline, and may both be gate valves, and may also be other types of valves such as stop valves. It is understood that the joints of the first on-off valve 610 and the second on-off valve 710 and the cooling pipe 200 form a three-way form, and the pipe connection can be completed by using a three-way joint.

Optionally, the liquid level display tube 800 is disposed outside the blast furnace, and a fixing bracket is correspondingly disposed to fixedly connect the liquid level display tube 800 with the blast furnace body 100.

Optionally, the cooling pipe 200 uses colored cooling water to enter the liquid level display pipe 800 for liquid level display. This scheme is applicable to circulating cooling, utilizes the colour to be convenient for observe the liquid level condition in the display tube. The cooling water can be colored by using dyes, pigments and other materials.

Optionally, the connection of the first on-off valve 610 and the cooling pipe 200 is located between the water inlet valve 300 and the pressure gauge 500. After the liquid level display is filled with water, the specific position of water leakage is detected, and water leakage of the cooling pipe 200 can be further verified through the change of the pressure gauge 500.

Example 2

The present example provides a method for inspecting water leakage of a cooling stave of a blast furnace, which employs the apparatus for inspecting water leakage of a cooling stave of a blast furnace of example 1. Referring to fig. 5, the checking method includes:

finding that the water replenishing period of the blast furnace soft water system is accelerated, indicating that the water leakage phenomenon of a cooling wall of the blast furnace exists, damping down the blast furnace, and preparing to check the water leakage condition;

checking the first cooling pipe 200, closing the water inlet valve 300 and the water outlet valve 400 corresponding to the first cooling pipe 200, checking whether the indication number of the pressure gauge 500 corresponding to the first cooling pipe 200 changes, if the indication number of the pressure gauge 500 does not change, indicating that the first cooling pipe 200 does not leak water, and if the indication number of the pressure gauge 500 drops, indicating that the first cooling pipe 200 leaks water;

if water leakage exists in the first cooling pipe 200, opening the water inlet valve 300 and the water outlet valve 400 of the first cooling pipe 200, opening the first on-off valve 610 and the second on-off valve 710 connected with the first cooling pipe 200, and keeping the first on-off valve 610 and the second on-off valve 710 connected with other cooling pipes 200 in a closed state until the liquid level display pipe 800 is filled with cooling water, closing the water inlet valve 300 of the first cooling pipe 200, observing whether the liquid level in the liquid level display pipe 800 changes or not, if the liquid level in the liquid level display pipe 800 drops, indicating that water leakage occurs in the first cooling pipe 200 and the area of the cooling wall of the blast furnace corresponding to the liquid level height position of the liquid level display pipe 800 is a water leakage area, and closing the first on-off valve 610 and the second on-off valve 710 connected with the first cooling pipe 200 after checking the first cooling pipe 200;

according to the inspection of the first cooling pipe 200, the other cooling pipes 200 are inspected for water leakage one by one to obtain a water leakage area;

repairing and maintaining the water leakage area;

blast furnace air supply and production recovery.

Through the inspection method, the leakage inspection can be quickly finished on all the cooling pipes 200 by utilizing the additionally arranged liquid level display pipe 800 without a redundant water injection device, the inspection method has the characteristic of low modification cost, the leakage area is directly displayed through the liquid level, the working efficiency is greatly improved, and the working risk of workers in the coal gas area operation is reduced.

Example 3

The utility model provides a blast furnace, includes foretell blast furnace stave check device of condition of leaking, utilizes a liquid level display pipe 800 that adds, can accomplish the inspection of leaking water fast to all cooling tubes 200, need not unnecessary water injection device, has the characteristics of reforming transform with low costs, directly shows the region of leaking through the liquid level, greatly improves work efficiency, and has reduced the work risk of workman at the regional operation of coal gas.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.