Blast furnace cooling wall external connection pipe structure and cooling wall flow monitoring method

Abstract

The invention relates to a blast furnace cooling wall external connection pipe structure and a cooling wall flow monitoring method, the blast furnace cooling wall external connection pipe structure comprises a metal hose, two quick connectors, two ball valves and cooling wall connectors, the two ball valves are respectively connected with two adjacent cooling wall water pipes through the cooling wall connectors, and the two ball valves are respectively connected with the metal hose through the quick connectors. Compared with the prior art, the device has the beneficial effects that the device is convenient and quick to mount and dismount, and quick maintenance can be realized. And the flow is monitored in real time, so that faults of the cooling wall or other parts can be found and solved in time. And the service life of the blast furnace is prolonged. The sealing performance is good. The investment cost is saved. The application range is wide and the matching degree is high. The flow meter and the external connection pipe structure can be freely matched and assembled, and are suitable for cooling walls of all sections. From the comprehensive effect, compared with a traditional cooling wall external connection pipe, the cooling wall external connection pipe has better effects in the aspects of sealing, flow monitoring and convenient installation and replacement.

Description

Technical Field

[0001] The invention belongs to the technical field of blast furnace ironmaking, and in particular relates to a blast furnace cooling wall external connection pipe structure and a cooling wall flow monitoring method. Background Art

[0002] The cooling wall is crucial in blast furnace production, and the connection of the external connection pipe of the cooling wall also affects the stability of the blast furnace. At present, the external connection pipe of the cooling wall is generally connected by a hard pipe or a flange hose. Although some blast furnaces use a hose connection with a threaded joint, they are unable to monitor the flow of water in the external connection pipe. It is impossible to feed back the changes in the water volume in the external connection pipe to the main control in real time, and the problems of the cooling wall cannot be discovered in time. The common problems of the external connection pipe at this stage include: 1) The hard pipe connection of the external connection pipe is difficult to install and disassemble, and it is not convenient for maintenance and replacement; 2) The interface of the external connection pipe hose connection is prone to water leakage and poor sealing; 3) There are bubbles in the pipe that cannot be discharged in time, affecting water cooling; 4) The flow monitoring and tracking is not timely, and the flow cannot be monitored in real time. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a blast furnace cooling wall external connecting pipe structure and a cooling wall flow monitoring method, which can be quickly replaced and has good sealing effect at the interface, and can monitor the flow in the pipe in real time. Two commonly used methods are single-tube flow tracking or head-to-tail flow monitoring.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A blast furnace cooling wall external connection pipe structure comprises a metal hose, two quick connectors, two ball valves and a cooling wall connector. The two ball valves are respectively connected to two adjacent cooling wall water pipes through the cooling wall connector, and the two ball valves are respectively connected to the metal hose through the quick connector.

[0006] It also includes a flow meter and a connector 1, wherein the flow meter is installed on the connector 1, and the connector 1 is connected between one of the ball valves and the quick connector.

[0007] One end of the cooling wall connector is connected to the copper cooling wall water pipe through an internal thread, and the other end of the cooling wall connector is connected to the ball valve through an external thread.

[0008] One end of the cooling wall connector is fixedly connected to the cast iron cooling wall by welding, and the other end of the cooling wall connector is connected to the ball valve by an external thread.

[0009] An exhaust pipe is arranged at one end of the metal hose, and an air release valve is arranged on the exhaust pipe.

[0010] A cooling wall flow monitoring method using an external connection pipe structure of a blast furnace cooling wall includes single-tube flow tracking. The single-tube flow tracking is as follows: a group of water pipes are randomly selected on each cooling wall, and a flow meter is installed at each external connection pipe structure from top to bottom.

[0011] A cooling wall flow monitoring method using a blast furnace cooling wall external connection pipe structure includes head and tail flow monitoring, wherein the head and tail flow monitoring is to install flow meters at the water inlet at the lower end and the water return at the upper end of the cooling wall.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1) Easy and quick installation and disassembly, allowing for quick maintenance.

[0014] 2) Real-time flow monitoring can promptly detect and resolve faults in the cooling wall or other parts.

[0015] 3) Extend the service life of the cooling wall and thus extend the life of the blast furnace.

[0016] 4) Good sealing performance.

[0017] 5) Save investment costs.

[0018] 6) Wide application range and high matching degree. The flow meter and the external connection pipe structure can be matched and assembled at will, and are suitable for each section of the cooling wall.

[0019] 7) From the perspective of comprehensive effects, the present invention is better than the traditional cooling wall external connection pipe in terms of sealing, flow monitoring and convenience of installation and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of single-tube flow tracking.

[0021] Figure 2 This is a schematic diagram of head and tail flow monitoring.

[0022] Figure 3 This is a schematic diagram of the connection between the copper cooling wall and the copper cooling wall external connecting pipe.

[0023] Figure 4 This is a schematic diagram of the connection between the copper cooling wall and the cast iron cooling wall external connecting pipe.

[0024] Figure 5 This is a schematic diagram of the connection between the cast iron cooling wall and the cast iron cooling wall external connecting pipe.

[0025] Figure 6 Schematic diagram of the cooling wall connector connected to the copper cooling wall water pipe.

[0026] Figure 7Schematic diagram of the cooling wall connector connected to the cast iron cooling wall water pipe.

[0027] In the figure: 1-cooling wall, 2-sealing ring, 3-metal hose, 4-air release valve, 5-quick connector, 6-ball valve, 7-cooling wall connector connected to the cast iron cooling wall water pipe, 8-cast iron cooling wall, 9-flow meter, 10-connector 1, 11-cooling wall connector connected to the copper cooling wall water pipe, 12-copper cooling wall. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings.

[0029] like Figure 3-Figure 7 As shown, a blast furnace cooling wall external connection pipe structure includes a metal hose 3, two quick connectors 5, two ball valves 6, and a cooling wall connector. The two ball valves 6 are respectively connected to two adjacent cooling wall water pipes through the cooling wall connector, and the two ball valves 6 are respectively connected to the metal hose 3 through the quick connector 5.

[0030] It also includes a flow meter 9 and a connector 10 , wherein the flow meter 9 is installed on the connector 10 , and the connector 10 is connected between one of the ball valves 6 and the quick connector 5 .

[0031] As a form of connection with the stave 1, one end of the stave connector is connected to the copper stave 12 water pipe through an internal thread, and the other end of the stave connector is connected to the ball valve 6 through an external thread. The stave connector 11 connected to the copper stave water pipe is connected to the copper stave 12 and the ball valve 6 in the form of internal and external threads.

[0032] As another form of connection with the cooling stave 1, one end of the cooling stave connector is fixedly connected to the cast iron cooling stave 8 water pipe by welding, and the other end of the cooling stave connector is connected to the ball valve 6 by external threads. The cooling stave connector 7 connected to the cast iron cooling stave water pipe is connected to the cast iron cooling stave 8 by welding, and the other end is connected to the ball valve 6 by external threads. If the copper cooling stave water pipe is processed by the manufacturer and a steel pipe is welded at the end, it can also be connected in the form of internal and external threads.

[0033] An exhaust pipe is provided at one end of the metal hose 3 , and an air release valve 4 is provided on the exhaust pipe.

[0034] The flow meter 9 has a remote transmission function. The flow meter 9 is connected to a connector 10. One end of the connector 10 is connected to the quick connector 5 with an internal thread, and the other end of the connector 10 is connected to the ball valve 6 with an external thread.

[0035] The ball valve 6 is made of Teflon.

[0036] like Figure 1 As shown, a cooling wall flow monitoring method using an external connecting pipe structure of a blast furnace cooling wall includes single-tube flow tracking. The single-tube flow tracking is as follows: a group of water pipes are selected on each cooling wall 1, and a flow meter 9 is installed at each external connecting pipe structure from top to bottom.

[0037] Single-pipe flow tracking is to mark some water pipes in each section of the cooling stave 1 in a regular manner (for example, if there are 4 water pipes in a cooling stave, one mark can be made for every 4 water pipes), and monitor the flow from bottom to top. This method does not require all water pipes to be set up with flow monitoring, but because of its regular arrangement, once a problem occurs, the fault area can be quickly locked, locked to a certain section of the cooling stave 1, or even to a certain cooling stave 1, and then the water pipes of this cooling stave 1 can be checked in time.

[0038] like Figure 1 As shown, the flow of the marked water pipe in the single-pipe flow tracking method of the present invention can be tracked without blind spots, and the regular marking can quickly lock the module, which is convenient and quick. Figure 1 This is for illustration only. The specific number of cooling wall sections and the quantity of each section need to be compared with the blast furnace used for further design.

[0039] like Figure 2 As shown, a cooling wall flow monitoring method using a blast furnace cooling wall external connection pipe structure includes head and tail flow monitoring. The head and tail flow monitoring is to install flow meters 9 at the water inlet at the lower end and the return water at the upper end of the cooling wall 1.

[0040] The head and tail flow monitoring is to install the flow meter 9 at the water inlet and return of the cooling wall 1 water pipe. That is, it is installed at the water inlet of the lowest cooling wall 1 and the return of the upper cooling wall 1. This method marks the head and tail water flow, and the middle water flow 9 does not need to be marked. Not only does it save the installation of some flow meters, but it also has a super strong locking function. If there is a problem, it can be quickly locked to a certain water pipe, and then the sections of the pipe can be checked from bottom to top.

[0041] like Figure 2 As shown, the head-to-tail flow monitoring method of the present invention marks the beginning and end of the water flow in all water pipes, and can quickly identify a certain water pipe, and then check each section of the water pipe. Figure 2 This is for illustration only. The specific number of cooling wall sections and the quantity of each section need to be compared with the blast furnace used for further design.

[0042] The flow meter 9 of the present invention does not need to be equipped on each water pipe of each cooling stave 1. If the flow meter 9 is not needed during installation, the quick connector 5 can be directly connected to the ball valve 6.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A blast furnace cooling wall external connection pipe structure, characterized in that: It comprises a metal hose, two quick connectors, two ball valves and a cooling wall connector. The two ball valves are respectively connected to two adjacent cooling wall water pipes through the cooling wall connector, and the two ball valves are respectively connected to the metal hose through the quick connector.

2. The blast furnace cooling stave external connection pipe structure according to claim 1, characterized in that: It also includes a flow meter and a connector 1, wherein the flow meter is installed on the connector 1, and the connector 1 is connected between one of the ball valves and the quick connector.

3. The blast furnace cooling stave external connection pipe structure according to claim 1, characterized in that: One end of the cooling wall connector is connected to the copper cooling wall water pipe through an internal thread, and the other end of the cooling wall connector is connected to the ball valve through an external thread.

4. The blast furnace cooling stave external connection pipe structure according to claim 1, characterized in that: One end of the cooling wall connector is fixedly connected to the cast iron cooling wall by welding, and the other end of the cooling wall connector is connected to the ball valve by an external thread.

5. The blast furnace cooling stave external connection pipe structure according to claim 1, characterized in that: An exhaust pipe is arranged at one end of the metal hose, and an air release valve is arranged on the exhaust pipe.

6. A method for monitoring the cooling wall flow rate using the blast furnace cooling wall external connection pipe structure according to any one of claims 1 to 5, characterized in that: It includes single-tube flow tracking, which is as follows: a group of water pipes is randomly selected on each cooling wall, and a flow meter is installed at each external connecting pipe structure from top to bottom.

7. A method for monitoring the cooling wall flow rate using the blast furnace cooling wall external connection pipe structure according to any one of claims 1 to 5, characterized in that: It includes head and tail flow monitoring, wherein the head and tail flow monitoring is to install flow meters at the water inlet at the lower end and the water return at the upper end of the cooling wall.

Images