A detecting device for blast furnace top valve

Abstract

The utility model relates to a kind of detection devices for blast furnace top valve, and it relates to top valve technical field, it includes detection shaft, the first opening proximity switch and the second opening proximity switch are arranged in the detection shaft side, the first opening proximity switch is located just above the second opening proximity switch, the first closing proximity switch and the second closing proximity switch are arranged in the other side of the detection shaft, the first closing proximity switch is located just above the second closing proximity switch, inductive component is arranged on the detection shaft, the inductive component is arranged eccentric with detection shaft rotation axis, the inductive component is used to trigger the first opening proximity switch, the second opening proximity switch, the first closing proximity switch and the second closing proximity switch. The present application has the effect of indicating the position of blast furnace top valve.

Description

Technical Field

[0001] This utility model relates to the field of furnace top valve technology, and in particular to a detection device for blast furnace top valves. Background Technology

[0002] Currently, in order to detect whether the valve plate in the blast furnace top valve has moved into place, an inductive proximity switch is installed at the end of the valve plate to detect its position.

[0003] However, during the opening and closing of the blast furnace top valve, signal errors may occur due to damage to the proximity switch or wiring, which reduces the accuracy of the valve plate position indication. Furthermore, troubleshooting and handling a faulty proximity switch takes time, affecting the normal operation of the blast furnace. Utility Model Content

[0004] To facilitate the indication of the position of the blast furnace top valve and reduce the impact on the normal operation of the blast furnace, this application provides a detection device for the blast furnace top valve.

[0005] The detection device for blast furnace top valves provided in this application adopts the following technical solution: A detection device for a blast furnace top valve includes a detection shaft. A first open proximity switch and a second open proximity switch are arranged on one side of the detection shaft, with the first open proximity switch located directly above the second open proximity switch. A first closed proximity switch and a second closed proximity switch are arranged on the other side of the detection shaft, with the first closed proximity switch located directly above the second closed proximity switch. A sensing component is arranged on the detection shaft, and the sensing component is eccentrically arranged with respect to the rotation axis of the detection shaft. The sensing component is used to trigger the first open proximity switch, the second open proximity switch, the first closed proximity switch, and the second closed proximity switch.

[0006] By adopting the above technical solution, the detection shaft is mounted on the valve plate drive shaft, making the detection shaft and the valve plate drive shaft coaxial. The first and second open proximity switches are both mounted on one side of the detection shaft, and the first and second close proximity switches are both mounted on the other side. During valve opening and closing, the valve plate drive shaft drives the sensing components on the detection shaft to rotate. When the valve is fully open, only the first and second open proximity switches are triggered by the sensing components. At this time, both the first and second open proximity switches should issue an open-to-position signal. Conversely, both the first and second close proximity switches should issue an open signal. When the valve is fully closed, only the first and second close proximity switches are triggered. When the first and second closed proximity switches are triggered by the sensing component, both should issue a closed signal, while both should issue a closed signal. If both the first and second open proximity switches simultaneously issue closed and open signals, the first closed or first open proximity switch is faulty, and the second closed and second open proximity switches should be used directly. If both simultaneously issue closed and open signals, the first closed or first open proximity switch continues to be used, and then the second closed and second open proximity switches are tested. If the second closed or first open proximity switch is not detected, it continues to be used. If the closed proximity switch is in the closed position signal, then both the first and second closed proximity switches are normal. If the second closed proximity switch is not in the closed position signal, then both the first and second closed proximity switches are abnormal. If the second open proximity switch is in the closed position signal, then both the first and second open proximity switches are normal. If the second open proximity switch is not in the closed position signal, then both the first and second open proximity switches are abnormal. When both the first closed and first open proximity switches simultaneously issue open and open position signals, continue using the first closed and first open proximity switches, and then check the second closed and second open proximity switches. If the second closed proximity switch is in the open position... If the second closing proximity switch is not open, then the first and second closing proximity switches are normal. If the second closing proximity switch is not open, then the first and second closing proximity switches are abnormal. If the second opening proximity switch is fully open, then the first and second opening proximity switches are normal. If the second opening proximity switch is not fully open, then the first and second opening proximity switches are abnormal. The second opening proximity switch and the second closing proximity switch not only form backup switches for the first opening proximity switch and the first closing proximity switch, but also detect whether the first opening proximity switch and the first closing proximity switch are operating normally, which is convenient for indicating the position of the furnace top valve and reducing the impact on the normal operation of the blast furnace.

[0007] Preferably, the sensing component includes a first sensing block and a second sensing block, both of which are disposed on the detection shaft. The first sensing block is fixedly connected to the second sensing block, and the first sensing block is located directly above the second sensing block. The first sensing block is used to trigger a first open proximity switch and a first close proximity switch, and the second sensing block is used to trigger a second open proximity switch and a second close proximity switch.

[0008] By adopting the above technical solution, the rotation of the detection shaft drives the first sensing block and the second sensing block to move synchronously. When the valve is fully open, the first opening proximity switch is triggered by the first sensing block, and the second opening proximity switch is triggered by the second sensing block. At this time, both the first and second opening proximity switches should issue an open-to-position signal, while both the first and second closing proximity switches issue an open signal. When the valve is fully closed, the first closing proximity switch is triggered by the first sensing block, and the second closing proximity switch is triggered by the second sensing block. At this time, both the first and second closing proximity switches should issue a closed-to-position signal, while both the first and second opening proximity switches issue a closed signal.

[0009] Preferably, an extension rod is fixedly mounted on the detection shaft, with one end of the extension rod close to the rotation axis of the detection shaft and the other end away from the rotation axis of the detection shaft. The first sensing block and the second sensing block are both connected to the end of the extension rod away from the rotation axis of the detection shaft.

[0010] By adopting the above technical solution, the first sensing block and the second sensing block protrude from the detection shaft under the action of the extension rod, and both the first sensing block and the second sensing block are eccentrically set with respect to the rotation axis of the detection shaft.

[0011] Preferably, a baffle is provided on both the first and second sensing blocks, and the baffle is fixedly connected to the end of the extension rod away from the rotation axis of the detection shaft.

[0012] By adopting the above technical solution, the baffle forms the mounting surface of the first sensing block and the second sensing block at the end of the extension rod away from the rotation axis of the detection shaft.

[0013] Preferably, the distance between the first open proximity switch and the rotation axis of the detection shaft is equal to the distance between the first closed proximity switch and the rotation axis of the detection shaft.

[0014] By adopting the above technical solution, it is convenient for the first sensing block to trigger the first open proximity switch and the first close proximity switch.

[0015] Preferably, the distance between the second open proximity switch and the rotation axis of the detection shaft is equal to the distance between the second closed proximity switch and the rotation axis of the detection shaft.

[0016] By adopting the above technical solution, it is convenient for the second sensing block to trigger the second open proximity switch and the second close proximity switch.

[0017] Preferably, the center of the first open proximity switch, the center of the first closed proximity switch, and the center of the first sensing block are all located at the same height.

[0018] By adopting the above technical solution, it is convenient for the first sensing block to trigger the first open proximity switch and the first close proximity switch.

[0019] Preferably, the centers of the second open proximity switch, the second closed proximity switch, and the second sensing block are all located at the same height.

[0020] By adopting the above technical solution, it is convenient for the second sensing block to trigger the second open proximity switch and the second close proximity switch.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a detection shaft, a first open proximity switch, a second open proximity switch, a first closed proximity switch, a second closed proximity switch, and a sensing component, the position of the furnace top valve can be easily indicated, reducing the impact on the normal operation of the blast furnace; 2. By setting a first sensing block and a second sensing block, when the valve is fully open, the first opening proximity switch is triggered by the first sensing block, and the second opening proximity switch is triggered by the second sensing block. At this time, both the first and second opening proximity switches should issue an open-to-position signal, while both the first and second closing proximity switches issue an open signal. When the valve is fully closed, the first closing proximity switch is triggered by the first sensing block, and the second closing proximity switch is triggered by the second sensing block. At this time, both the first and second closing proximity switches should issue a closed-to-position signal, while both the first and second opening proximity switches issue a closed signal. 3. By setting an extension rod, both the first sensing block and the second sensing block are eccentrically set to the rotation axis of the detection shaft. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a detection device for a blast furnace top valve in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram illustrating the positional relationship between the first sensing block and the second sensing block in an embodiment of this application.

[0024] Figure 3 This is a schematic diagram illustrating the positional relationship between the first open proximity switch and the first closed proximity switch in the embodiments of this application.

[0025] Figure 4This is a schematic diagram illustrating the positional relationship between the second open proximity switch and the second closed proximity switch in the embodiments of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Detection shaft; 2. First open proximity switch; 3. Second open proximity switch; 4. First closed proximity switch; 5. Second closed proximity switch; 6. Sensing component; 61. First sensing block; 62. Second sensing block; 7. Extension rod; 8. Baffle. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] This application discloses a detection device for a blast furnace top valve. (Refer to...) Figures 1 to 4 The system includes a detection shaft 1, which is mounted on a valve plate drive shaft, making the detection shaft 1 coaxial with the valve plate drive shaft. A first open proximity switch 2 and a second open proximity switch 3 are configured on one side of the detection shaft 1, and a first closed proximity switch 4 and a second closed proximity switch 5 are configured on the other side. The first open proximity switch 2 is located directly above the second open proximity switch 3, and the first closed proximity switch 4 is located directly above the second closed proximity switch 5. A sensing component 6 is mounted on the detection shaft 1, and the sensing component 6 is eccentrically positioned to trigger the first open proximity switches 2, 3, 4, and 5. During valve opening and closing, the valve plate drive shaft drives the sensing component 6 on the detection shaft 1 to rotate. When the valve is fully open, only the first open proximity switches 2 and 3 are triggered by the sensing component 6. At this time, both the first open proximity switches 2 and 3 should issue an open-to-position signal, while both the first closed proximity switches 4 and 5 should issue an open signal. When the valve is fully closed, only the first closing proximity switch 4 and the second closing proximity switch 5 are triggered by the sensing component 6. At this time, both the first closing proximity switch 4 and the second closing proximity switch 5 should issue a closed signal, while both the first opening proximity switch 2 and the second opening proximity switch 3 issue a closed signal.

[0029] When the first closed proximity switch 4 and the first open proximity switch 2 simultaneously issue closed and open signals, the first closed proximity switch 4 or the first open proximity switch 2 is faulty, and the second closed proximity switch 5 and the second open proximity switch 3 are directly switched to be used.

[0030] When both the first closed proximity switch 4 and the first open proximity switch 2 simultaneously emit closed and closed signals, the first closed proximity switch 4 and the first open proximity switch 2 continue to be used. Then, the second closed proximity switch 5 and the second open proximity switch 3 are detected. If the second closed proximity switch 5 is in the closed position, then the first closed proximity switch 4 and the second closed proximity switch 5 are normal; if the second closed proximity switch 5 is not in the closed position, then the first closed proximity switch 4 and the second closed proximity switch 5 are abnormal. If the second open proximity switch 3 is in the closed position, then the first open proximity switch 2 and the second open proximity switch 3 are normal; if the second open proximity switch 3 is not in the closed position, then the first open proximity switch 2 and the second open proximity switch 3 are abnormal.

[0031] When both the first closed proximity switch 4 and the first open proximity switch 2 simultaneously emit open and fully open signals, the first closed proximity switch 4 and the first open proximity switch 2 continue to be used, and then the second closed proximity switch 5 and the second open proximity switch 3 are detected. If the second closed proximity switch 5 is an open signal, then the first closed proximity switch 4 and the second closed proximity switch 5 are normal; if the second closed proximity switch 5 is not an open signal, then the first closed proximity switch 4 and the second closed proximity switch 5 are abnormal. If the second open proximity switch 3 is a fully open signal, then the first open proximity switch 2 and the second open proximity switch 3 are normal; if the second open proximity switch 3 is not a fully open signal, then the first open proximity switch 2 and the second open proximity switch 3 are abnormal.

[0032] The second open proximity switch 3 and the second close proximity switch 5 not only form backup switches for the first open proximity switch 2 and the first close proximity switch 4, but also detect whether the first open proximity switch 2 and the first close proximity switch 4 are operating normally, which facilitates the indication of the position of the furnace top valve and reduces the impact on the normal operation of the blast furnace.

[0033] Reference Figures 1 to 4The sensing component 6 includes a first sensing block 61 and a second sensing block 62, both of which are mounted on the detection shaft 1. The first sensing block 61 and the second sensing block 62 are integrally formed, with the first sensing block 61 positioned directly above the second sensing block 62. Rotation of the detection shaft 1 causes the first sensing block 61 and the second sensing block 62 to move synchronously. The first sensing block 61 triggers the first open proximity switch 2 and the first close proximity switch 4, while the second sensing block 62 triggers the second open proximity switch 3 and the second close proximity switch 5. When the valve is fully open, the first open proximity switch 2 is triggered by the first sensing block 61, and the second open proximity switch 3 is triggered by the second sensing block 62. At this time, both the first open proximity switch 2 and the second open proximity switch 3 should issue an open-to-position signal, while both the first close proximity switch 4 and the second close proximity switch 5 should issue an open signal. When the valve is fully closed, the first closing proximity switch 4 is triggered by the first sensing block 61, and the second closing proximity switch 5 is triggered by the second sensing block 62. At this time, both the first closing proximity switch 4 and the second closing proximity switch 5 should issue a closed signal, while both the first opening proximity switch 2 and the second opening proximity switch 3 issue a closed signal.

[0034] Reference Figures 1 to 4 An extension rod 7 is mounted on the detection shaft 1. One end of the extension rod 7 is close to the rotation axis of the detection shaft 1, and the other end is away from the rotation axis of the detection shaft 1. A baffle 8 is mounted on the end of the extension rod 7 away from the rotation axis of the detection shaft 1. The side of the baffle 8 away from the rotation axis of the detection shaft 1 forms the mounting surface for the first sensing block 61 and the second sensing block 62. Both the first sensing block 61 and the second sensing block 62 are mounted on the side of the baffle 8 away from the rotation axis of the detection shaft 1. Under the action of the extension rod 7, the first sensing block 61 and the second sensing block 62 protrude from the detection shaft 1, and are both eccentrically positioned with respect to the rotation axis of the detection shaft 1.

[0035] To facilitate the first sensing block 61 in triggering the first open proximity switch 2 and the first close proximity switch 4, and to facilitate the second sensing block 62 in triggering the second open proximity switch 3 and the second close proximity switch 5, refer to... Figures 1 to 4 The distance between the first open proximity switch 2 and the rotation axis of the detection shaft 1 is equal to the distance between the first closed proximity switch 4 and the rotation axis of the detection shaft 1. Similarly, the distance between the second open proximity switch 3 and the rotation axis of the detection shaft 1 is equal to the distance between the second closed proximity switch 5 and the rotation axis of the detection shaft 1. The centers of the first open proximity switch 2, the first closed proximity switch 4, and the first sensing block 61 are all at the same height. Likewise, the centers of the second open proximity switch 3, the second closed proximity switch 5, and the second sensing block 62 are all at the same height.

[0036] The implementation principle of a detection device for a blast furnace top valve according to an embodiment of this application is as follows: A detection shaft 1 is mounted on a valve plate drive shaft, coaxially arranged with the valve plate drive shaft. A first open proximity switch 2 and a second open proximity switch 3 are mounted on one side of the detection shaft 1, and a first closed proximity switch 4 and a second closed proximity switch 5 are mounted on the other side of the detection shaft 1. During valve opening and closing, the valve plate drive shaft drives the first sensing block 61 and the second sensing block 62 on the detection shaft 1 to rotate. When the valve is fully open, the first open proximity switch 2 is triggered by the first sensing block 61, and the second open proximity switch 3 is triggered by the second sensing block 62. At this time, both the first open proximity switches 2 and 3 should issue an open-to-position signal, while the first closed proximity switches 4 and 5 both issue an open signal. When the valve is fully closed, the first closed proximity switch 4 is triggered by the first sensing block 61, and the second closed proximity switch 5 is triggered by the second sensing block 62. At this time, both the first closed proximity switches 4 and 5 should issue a closed-to-position signal, while the first open proximity switches 2 and 3 both issue a closed signal.

[0037] When the first closed proximity switch 4 and the first open proximity switch 2 simultaneously issue closed and open signals, the first closed proximity switch 4 or the first open proximity switch 2 is faulty, and the second closed proximity switch 5 and the second open proximity switch 3 are directly switched to be used.

[0038] When both the first closed proximity switch 4 and the first open proximity switch 2 simultaneously emit closed and closed signals, the first closed proximity switch 4 and the first open proximity switch 2 continue to be used, and then the second closed proximity switch 5 and the second open proximity switch 3 are detected. If the second closed proximity switch 5 is in the closed position, then the first closed proximity switch 4 and the second closed proximity switch 5 are normal; if the second closed proximity switch 5 is not in the closed position, then the first closed proximity switch 4 and the second closed proximity switch 5 are abnormal. If the second open proximity switch 3 is in the closed position, then the first open proximity switch 2 and the second open proximity switch 3 are normal; if the second open proximity switch 3 is not in the closed position, then the first open proximity switch 2 and the second open proximity switch 3 are abnormal.

[0039] When both the first closed proximity switch 4 and the first open proximity switch 2 simultaneously emit open and fully open signals, the first closed proximity switch 4 and the first open proximity switch 2 continue to be used, and then the second closed proximity switch 5 and the second open proximity switch 3 are detected. If the second closed proximity switch 5 is an open signal, then the first closed proximity switch 4 and the second closed proximity switch 5 are normal; if the second closed proximity switch 5 is not an open signal, then the first closed proximity switch 4 and the second closed proximity switch 5 are abnormal. If the second open proximity switch 3 is a fully open signal, then the first open proximity switch 2 and the second open proximity switch 3 are normal; if the second open proximity switch 3 is not a fully open signal, then the first open proximity switch 2 and the second open proximity switch 3 are abnormal.

[0040] The second open proximity switch 3 and the second close proximity switch 5 not only form backup switches for the first open proximity switch 2 and the first close proximity switch 4, but also detect whether the first open proximity switch 2 and the first close proximity switch 4 are operating normally, which facilitates the indication of the position of the furnace top valve and reduces the impact on the normal operation of the blast furnace.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A detection device for a blast furnace top valve, comprising a detection shaft, characterized in that: A first open proximity switch and a second open proximity switch are provided on one side of the detection shaft, with the first open proximity switch located directly above the second open proximity switch. A first close proximity switch and a second close proximity switch are provided on the other side of the detection shaft, with the first close proximity switch located directly above the second close proximity switch. A sensing component is provided on the detection shaft, and the sensing component is eccentrically positioned to the rotation axis of the detection shaft. The sensing component is used to trigger the first open proximity switch, the second open proximity switch, the first close proximity switch, and the second close proximity switch.

2. The detection device for blast furnace top valves according to claim 1, characterized in that: The sensing component includes a first sensing block and a second sensing block, both of which are disposed on a detection shaft. The first sensing block is fixedly connected to the second sensing block, and the first sensing block is located directly above the second sensing block. The first sensing block is used to trigger a first open proximity switch and a first close proximity switch, and the second sensing block is used to trigger a second open proximity switch and a second close proximity switch.

3. The detection device for blast furnace top valves according to claim 2, characterized in that: An extension rod is fixedly installed on the detection shaft. One end of the extension rod is close to the rotation axis of the detection shaft, and the other end of the extension rod is away from the rotation axis of the detection shaft. The first sensing block and the second sensing block are both connected to the end of the extension rod away from the rotation axis of the detection shaft.

4. The detection device for blast furnace top valves according to claim 3, characterized in that: A baffle is provided on both the first and second sensing blocks, and the baffle is fixedly connected to one end of the extension rod away from the rotation axis of the detection shaft.

5. A detection device for a blast furnace top valve according to claim 2, characterized in that: The distance between the first open proximity switch and the rotation axis of the detection shaft is equal to the distance between the first closed proximity switch and the rotation axis of the detection shaft.

6. A detection device for a blast furnace top valve according to claim 2, characterized in that: The distance between the second open proximity switch and the rotation axis of the detection shaft is equal to the distance between the second closed proximity switch and the rotation axis of the detection shaft.

7. A detection device for a blast furnace top valve according to claim 2, characterized in that: The center of the first open proximity switch, the center of the first closed proximity switch, and the center of the first sensing block are all located at the same height.

8. A detection device for a blast furnace top valve according to claim 2, characterized in that: The centers of the second open proximity switch, the second closed proximity switch, and the second sensing block are all located at the same height.

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