CN217354958U - Blast furnace top hydraulic control valve control device - Google Patents
Blast furnace top hydraulic control valve control device Download PDFInfo
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- CN217354958U CN217354958U CN202221014840.XU CN202221014840U CN217354958U CN 217354958 U CN217354958 U CN 217354958U CN 202221014840 U CN202221014840 U CN 202221014840U CN 217354958 U CN217354958 U CN 217354958U
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Abstract
The utility model discloses a blast furnace top hydraulic control valve control device, which comprises an oil cylinder, a duplex electromagnetic three-way valve, a first control loop, a second control loop, a first oil pipe and a second oil pipe; the duplex electromagnetic three-way valve is provided with an A port, an A1 port, an A2 port, a B1 port and a B2 port, the A port is communicated with a rodless cavity of the oil cylinder, the B port is communicated with a rod cavity of the oil cylinder, the first control circuit comprises a first control valve block and a first duplex electromagnetic ball valve, the second control circuit comprises a second control valve block and a second duplex electromagnetic ball valve, and when one of the first control circuit and the second control circuit has a fault, the other one can be started; by arranging the flowmeter and the travel switch, fault self-diagnosis can be realized, and troubleshooting and maintenance can be carried out according to the judged fault type.
Description
Technical Field
The utility model relates to the technical field of blast furnace ironmaking machinery, in particular to a control device of a blast furnace top hydraulic control valve.
Background
The control element and the execution element of the blast furnace top hydraulic system are usually positioned in the furnace top area, after the furnace top hydraulic control element is abnormal, the normal production of the blast furnace is greatly influenced, and meanwhile, the personnel field treatment also has great potential safety hazard. In order to solve the fault in time, a standby hydraulic control element is usually prepared, but at present, the hydraulic control element is judged to be manually detected, and the fault valve stand is closed and started by replacing the standby hydraulic control element in a manual mode. Because the furnace top is in a gas area, the personnel waste time and labor from top to bottom, and potential safety hazards exist, which influence the stable operation of the blast furnace.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a control device of a blast furnace top hydraulic control valve aiming at the defects of the prior art.
The utility model provides a technical scheme of above-mentioned problem does: a control device for a hydraulic control valve at the top of a blast furnace comprises an oil cylinder, a duplex electromagnetic three-way valve, a first control loop, a second control loop, a first oil pipe and a second oil pipe;
the duplex electromagnetic three-way valve is provided with an A port, an A1 port, an A2 port, a B1 port and a B2 port, the A port is communicated with a rodless cavity of the oil cylinder, the B port is communicated with a rod cavity of the oil cylinder, when the duplex electromagnetic three-way valve is in a lower position, the A port is communicated with the A1 port, the B port is communicated with the B1 port, when the duplex electromagnetic three-way valve is in an upper position, the A port is communicated with the A2 port, and the B port is communicated with the B2 port;
the first control loop comprises a first control valve block and a first double-connection type electromagnetic ball valve, the first control valve block is used for controlling reversing, the first control valve block is respectively connected with a first branch upper pipe, a first branch lower pipe, a second branch upper pipe and a second branch lower pipe, the first branch lower pipe is connected with a first oil pipe, the second branch lower pipe is connected with a second oil pipe, the first branch upper pipe is connected with an A1 port, the second branch upper pipe is connected with a B1 port, and the first branch lower pipe and the second branch lower pipe are controlled to be switched by the first double-connection type electromagnetic ball valve;
the second control loop comprises a second control valve block and a second duplex electromagnetic ball valve, the second control valve block is used for controlling reversing, the second control valve block is respectively connected with a third branch upper pipe, a third branch lower pipe, a fourth branch upper pipe and a fourth branch lower pipe, the third branch lower pipe is connected with a first oil pipe, the fourth branch lower pipe is connected with a second oil pipe, the third branch upper pipe is connected with an A2 port, the fourth branch upper pipe is connected with a B2 port, and the first branch lower pipe and the second branch lower pipe are controlled by the second duplex electromagnetic ball valve to control the switch.
The double-linkage electromagnetic three-way valve, the first control valve block, the first double-linkage electromagnetic ball valve and the second control valve block are respectively connected with the controller.
Further, a first flowmeter is further arranged on the first branch lower pipe, a second flowmeter is further arranged on the second branch lower pipe, and the first flowmeter and the second flowmeter are connected with the controller.
Furthermore, a third flowmeter is further arranged on the third branch lower pipe, a fourth flowmeter is further arranged on the fourth branch lower pipe, and the third flowmeter and the fourth flowmeter are connected with the controller.
Furthermore, the end part of the piston rod of the oil cylinder is provided with a travel switch, and the travel switches are respectively connected with the controller.
Furthermore, the end part of the piston rod of the oil cylinder is provided with a travel switch, and the travel switches are respectively connected with the controller.
The utility model discloses beneficial effect has:
the utility model provides a control device of a blast furnace top hydraulic control valve, which can start one of a first control loop and a second control loop when the other control loop has a fault; by arranging the flowmeter and the travel switch, the fault self-diagnosis can be realized, and the troubleshooting and the maintenance can be carried out according to the judged fault type.
Drawings
FIG. 1 is a schematic view of the present invention;
in the figure: the flow meter comprises a cylinder 1, a duplex electromagnetic three-way valve 2, a first oil pipe 3, a second oil pipe 4, a first control valve block 5, a first duplex electromagnetic ball valve 6, a first flowmeter 7, a second flowmeter 8, a second control valve block 9, a second duplex electromagnetic ball valve 10, a third flowmeter 11 and a fourth flowmeter 12.
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in the figure, the control device for the blast furnace top hydraulic control valve comprises an oil cylinder, a duplex electromagnetic three-way valve, a first control loop, a second control loop, a first oil pipe and a second oil pipe, wherein the first oil pipe and the second oil pipe are respectively connected with an oil tank.
The duplex electromagnetic three-way valve is provided with an A port, an A1 port, an A2 port, a B1 port and a B2 port, when the duplex electromagnetic three-way valve is in the lower position, the A port is communicated with the A1 port, the B port is communicated with the B1 port, when the duplex electromagnetic three-way valve is in the upper position, the A port is communicated with the A2 port, and the B port is communicated with the B2 port;
the port A is communicated with a rodless cavity of the oil cylinder, the port B is communicated with a rod cavity of the oil cylinder, and the end part of a piston rod of the oil cylinder is provided with a travel switch.
The first control loop comprises a first control valve block and a first double-connection type electromagnetic ball valve, the first control valve block is respectively connected with a first branch upper pipe, a first branch lower pipe, a second branch upper pipe and a second branch lower pipe, the first branch lower pipe is connected with a first oil pipe, the second branch lower pipe is connected with a second oil pipe, the first branch upper pipe is connected with an A1 port, the second branch upper pipe is connected with a B1 port, the first control valve block is used for controlling reversing, when an oil cylinder piston rod moves outwards, the flow direction of first branch oil is upward, the flow direction of second branch oil is downward, when the oil cylinder piston rod moves inwards, the flow direction of the first branch oil is downward, the flow direction of the second branch oil is upward, the first branch lower pipe and the second branch lower pipe are controlled to be switched by the first double-connection type electromagnetic ball valve, a first flowmeter is further arranged on the first branch lower pipe, and a second flowmeter is also arranged on the lower pipe of the second branch.
The second control loop comprises a second control valve block and a second duplex electromagnetic ball valve, the second control valve block is respectively connected with a third branch upper pipe and a third branch lower pipe, a fourth branch upper pipe and a fourth branch lower pipe, the third branch lower pipe is connected with a first oil pipe, the fourth branch lower pipe is connected with a second oil pipe, the third branch upper pipe is connected with an A2 port, the fourth branch upper pipe is connected with a B2 port, the second control valve block is used for controlling reversing, the first branch lower pipe and the second branch lower pipe are controlled by the second duplex electromagnetic ball valve to be switched, a third flowmeter is further arranged on the third branch lower pipe, and a fourth flowmeter is further arranged on the fourth branch lower pipe.
The duplex electromagnetic three-way valve, the first control valve block, the first flow meter, the second flow meter, the first duplex electromagnetic ball valve, the second control valve block, the third flow meter, the fourth flow meter and the travel switch are respectively connected with the controller.
When the controller judges the first control loop fault, the second control loop is started to work, then the fault is fed back to the main control console, maintenance personnel can process and repair the first control loop fault on line, and the first control loop is started to work when the second control loop fault is the same.
When the first control loop is started, the duplex electromagnetic three-way valve is in the lower position, the first duplex electromagnetic ball valve is opened, and the second duplex electromagnetic ball valve is closed; when the second control loop is started, the duplex electromagnetic three-way valve is positioned at the upper position, the second duplex electromagnetic ball valve is opened, and the first duplex electromagnetic ball valve is closed.
There are three reasons for the failure of the first control loop:
firstly, a controller acquires flow values of a first flow meter and a second flow meter, and when the difference between the flow values of the first flow meter and the second flow meter exceeds an allowable error, namely the oil inlet quantity of an oil cylinder is unequal to the oil return quantity of the oil cylinder, the occurrence of external leakage of a first control loop pipeline or element can be judged;
secondly, the controller collects flow values of the first flow meter and the second flow meter, when the difference between the flow values of the first flow meter and the second flow meter does not exceed the allowable error, but the flow value of the first flow meter is larger than the full stroke flow q of the oil cylinder, namely the required flow of the oil cylinder from SQ1 to SQ2 from a stroke switch is smaller than the first flow value of the flow meter, and the oil cylinder does not act or acts slowly, namely after the control valve block acts, a signal is always output or no signal is output in SQ1 or SQ2, and at this time, the fact that internal leakage exists in the first control loop can be judged;
thirdly, the controller collects flow values of the first flow meter and the second flow meter, and when the flow values of the first flow meter and the second flow meter are zero and signals of the oil cylinder stroke switches SQ1 or SQ2 do not change, namely the oil cylinder does not act or stops acting after slight action, the fact that the first control loop is blocked can be judged at the moment.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (6)
1. The utility model provides a blast furnace top hydraulic control valve controlling means which characterized in that: the system comprises an oil cylinder, a duplex electromagnetic three-way valve, a first control loop, a second control loop, a first oil pipe and a second oil pipe;
the duplex electromagnetic three-way valve is provided with an A port, an A1 port, an A2 port, a B1 port and a B2 port, the A port is communicated with a rodless cavity of the oil cylinder, the B port is communicated with a rod cavity of the oil cylinder, when the duplex electromagnetic three-way valve is in a lower position, the A port is communicated with the A1 port, the B port is communicated with the B1 port, when the duplex electromagnetic three-way valve is in an upper position, the A port is communicated with the A2 port, and the B port is communicated with the B2 port;
the first control loop comprises a first control valve block and a first double-connection type electromagnetic ball valve, the first control valve block is used for controlling reversing, the first control valve block is respectively connected with a first branch upper pipe, a first branch lower pipe, a second branch upper pipe and a second branch lower pipe, the first branch lower pipe is connected with a first oil pipe, the second branch lower pipe is connected with a second oil pipe, the first branch upper pipe is connected with an A1 port, the second branch upper pipe is connected with a B1 port, and the first branch lower pipe and the second branch lower pipe are controlled to be switched by the first double-connection type electromagnetic ball valve;
the second control loop comprises a second control valve block and a second duplex electromagnetic ball valve, the second control valve block is used for controlling reversing, the second control valve block is respectively connected with a third branch upper pipe, a third branch lower pipe, a fourth branch upper pipe and a fourth branch lower pipe, the third branch lower pipe is connected with a first oil pipe, the fourth branch lower pipe is connected with a second oil pipe, the third branch upper pipe is connected with an A2 port, the fourth branch upper pipe is connected with a B2 port, and the first branch lower pipe and the second branch lower pipe are controlled by the second duplex electromagnetic ball valve to control the switch.
2. The control device for the hydraulic control valve of the blast furnace top according to claim 1, wherein: the double-linkage electromagnetic three-way valve, the first control valve block, the first double-linkage electromagnetic ball valve and the second control valve block are respectively connected with the controller.
3. The control device of the blast furnace top hydraulic control valve according to claim 2, characterized in that: and a first flowmeter is further arranged on the first branch lower pipe, a second flowmeter is further arranged on the second branch lower pipe, and the first flowmeter and the second flowmeter are connected with a controller.
4. The blast furnace top hydraulic control valve control device according to claim 2 or 3, wherein: and a third flowmeter is further arranged on the third branch lower pipe, a fourth flowmeter is further arranged on the fourth branch lower pipe, and the third flowmeter and the fourth flowmeter are connected with the controller.
5. The control device of the blast furnace top hydraulic control valve according to claim 3, characterized in that: the end part of the piston rod of the oil cylinder is provided with a travel switch which is respectively connected with the controller.
6. The control device for the hydraulic control valve of the blast furnace top according to claim 4, wherein: the end part of the piston rod of the oil cylinder is provided with a travel switch which is respectively connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221014840.XU CN217354958U (en) | 2022-04-28 | 2022-04-28 | Blast furnace top hydraulic control valve control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221014840.XU CN217354958U (en) | 2022-04-28 | 2022-04-28 | Blast furnace top hydraulic control valve control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217354958U true CN217354958U (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221014840.XU Active CN217354958U (en) | 2022-04-28 | 2022-04-28 | Blast furnace top hydraulic control valve control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217354958U (en) |
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2022
- 2022-04-28 CN CN202221014840.XU patent/CN217354958U/en active Active
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