Monotonic device for coking chamber of coke oven
By introducing a high-precision servo actuator and a monotonic device with a ball screw structure into the coking chamber of the coke oven, the problem of pressure control in the coking chamber and the gas collecting pipe of the coke oven was solved, and stable regulation of the carbonization chamber pressure and efficient operation of the equipment were achieved.
Patent Information
- Application Number
- CN202520091501.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2035-01-15
AI Technical Summary
It is difficult to separate the pressure control of the carbonization chamber and the gas collecting pipe of a traditional coke oven, which leads to negative pressure problems at the bottom of the carbonization chamber when the gas volume is large in the early stage of coking and small in the late stage. The existing monotonic sealing valve of the carbonization chamber pressure is difficult to effectively control.
The monotonic device with high-precision servo actuator and ball screw structure is used to control the opening of the bridge pipe water seal valve to achieve independent adjustment of the carbonization chamber pressure. Combined with temperature detection and back-blowing mechanism, it ensures that the carbonization chamber maintains positive pressure throughout the entire coking cycle.
The stable control of the pressure in the carbonization chamber of the coke oven is achieved, the occurrence of negative pressure is avoided, the control accuracy and the temperature resistance of the equipment are improved, and the life of the equipment is extended.
Smart Images
Figure CN223397671U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of monotonic devices, in particular to a monotonic device for a coke oven carbonization chamber. Background Art
[0002] The carbonization chamber of a traditional coke oven is connected to the gas collecting pipe through a bridge pipe. The suction pressure is uniformly controlled by the carbonization chamber, bridge pipe pressure and gas collecting pipe pressure. This cannot take into account the large amount of gas in the initial stage of coking and the small amount of gas in the final stage, which makes negative pressure problems easily occur at the bottom of the carbonization chamber.
[0003] At present, the carbonization chamber bridge pipe water seal valve is used to cut off the connection between the carbonization chamber and the gas collecting pipe when the furnace is drying at the end of coking. It is manually operated and plays a role of safety isolation. It is fully open during the coal loading and coking process and has not been well used. The carbonization chamber pressure monotonic sealing valve in the existing technology is difficult to separate the carbonization chamber and the gas collecting pipe for control, and needs further improvement.
[0004] Therefore, a coke oven carbonization chamber monotonic device is proposed, which can control the carbonization chamber and the gas collecting pipe separately, so that the pressure of the coke oven carbonization chamber can be controlled independently without being directly affected by the gas collecting pipe pressure, and no negative pressure will occur at the end of the coking cycle. Utility Model Content
[0005] In order to overcome the problem in the prior art that the carbonization chamber pressure monotonic sealing valve is difficult to control the carbonization chamber and the gas collecting pipe separately, a coke oven carbonization chamber monotonic device is proposed.
[0006] The technical solution of the utility model is as follows: a coke oven carbonization chamber monotonic device comprises a coke oven carbonization chamber; a bearing block is fixedly connected to the side wall of the coke oven carbonization chamber, a back-blowing tank is fixedly connected to the upper end of the coke oven carbonization chamber, a back-blowing mechanism is provided on the back-blowing tank, an air outlet pipe is fixedly connected to the side wall of the coke oven carbonization chamber in a through-type manner, one end of a connecting pipe is fixedly connected to the lower end of the air outlet pipe, a hollow ball is fixedly connected to the other end of the connecting pipe, a bridge pipe water seal valve is provided on the air outlet pipe, a high-precision servo actuator and a monotonic central control device are fixedly connected to the side wall of the bearing block, and a monotonic mechanism for rotating the valve stem of the bridge pipe water seal valve is jointly provided on the bearing block and the bridge pipe water seal valve;
[0007] The monotonic mechanism includes a connecting block, a cylinder, a rotating shaft, a rocker arm and a fisheye bearing; the side wall of the bearing block is fixedly connected to the connecting block, the upper end of the connecting block is hinged to the cylinder, one end of the valve stem of the bridge pipe water seal valve is fixedly connected to the rocker arm, the end of the rocker arm away from the bridge pipe water seal valve is fixedly connected to the eccentric column, the side wall of the eccentric column is rotatably installed with a fisheye bearing, and the upper end of the output shaft of the cylinder is fixedly connected to the side wall of the fisheye bearing.
[0008] Preferably, when in use, the high-precision servo actuator is turned on to regulate the cylinder. Turning on the cylinder allows the output shaft of the cylinder to extend and retract inside the cylinder body, and the valve stem of the bridge pipe water seal valve can be adjusted. The opening of the bridge pipe water seal valve is controlled by the high-precision servo actuator. During the coking process, the opening of the bridge pipe water seal valve is adjusted according to the pressure in the coking chamber of the coke oven, so that the coking chamber of the coke oven maintains a positive pressure throughout the entire coking cycle. By setting a high-precision servo actuator, the pressure in the carbonization chamber is kept stable without modifying the bridge pipe device, and the speed and control accuracy of the actuator must be improved to cope with the impact of the circulating ammonia water on the water seal valve disc. To ensure the control accuracy of the actuator, a ball screw structure is used inside the high-precision servo actuator, and the mechanical accuracy can reach 0.2 mm. Compared with pneumatic valves and ordinary electric actuators, the mechanical accuracy of the reducer is greatly improved, and the service life is also extended. Due to the high ambient temperature around the riser, the screw rod design adopts a high-temperature design, and the belts, nylon and other accessories that are not resistant to high temperatures are removed, so that the temperature resistance of the mechanical mechanism reaches 200 degrees Celsius. The position feedback uses an encoder, and the sensitivity of the feedback is greatly improved, which solves the problem in the existing technology that the carbonization chamber pressure monotonic sealing valve is difficult to control the carbonization chamber and the gas collecting pipe separately.
[0009] Preferably, a turntable is fixedly connected to the side wall of the valve stem of the bridge pipe water seal valve, and the turntable is made of stainless steel.
[0010] Preferably, the cylinder is three meters away from the side wall of the coke oven carbonization chamber.
[0011] Preferably, the back-blowing mechanism includes a fixed block, an air intake pipe and a solenoid valve; the upper end of the back-blowing tank is fixedly connected to the fixed block, the side wall of the fixed block is fixedly connected to the air intake pipe, the air intake pipe is L-shaped and one end extends to the interior of the back-blowing tank, and a solenoid valve is provided on the air intake pipe.
[0012] Preferably, a temperature detection ring is fixedly connected to the upper part of the side wall of the coke oven carbonization chamber, and a temperature sensor is fixedly connected to the side wall of the temperature detection ring. One end of the temperature sensor passes through the wall layer of the coke oven carbonization chamber and extends to the interior of the coke oven carbonization chamber.
[0013] Preferably, the rocker arm is made of stainless steel and the eccentric column is made of magnesium-manganese alloy.
[0014] Preferably, the outer diameter of the back-blowing tank is larger than the outer diameter of the coke oven carbonization chamber, and the fixing block and the air inlet pipe are both made of stainless steel.
[0015] The beneficial effects of the present invention are as follows: by turning on the high-precision servo actuator to regulate the cylinder, turning on the cylinder allows the output shaft of the cylinder to extend and retract inside the cylinder body, the valve stem of the bridge pipe water seal valve can be adjusted, and the opening of the bridge pipe water seal valve is controlled by the high-precision servo actuator. During the coking process, the opening of the bridge pipe water seal valve is adjusted according to the pressure in the coking chamber of the coke oven, so that the coking chamber of the coke oven maintains a positive pressure throughout the entire coking cycle. By setting up a high-precision servo actuator, the speed and control accuracy of the actuator must be improved to ensure that the pressure in the carbonization chamber is stable without modifying the bridge pipe device and responding to the impact of circulating ammonia water on the water seal valve disc. In order to ensure the control accuracy of the actuator, a ball screw structure is used inside the high-precision servo actuator, and the mechanical accuracy can reach 0.2 mm. Compared with pneumatic valves and ordinary electric actuators, the mechanical accuracy of the reducer is greatly improved, and the service life is also extended. Due to the high ambient temperature around the riser, the screw rod design adopts a high-temperature design, and the belts, nylon and other accessories that are not resistant to high temperatures are removed, so that the temperature resistance of the mechanical mechanism reaches 200 degrees Celsius. The position feedback uses an encoder, and the feedback sensitivity is greatly improved, which solves the problem in the existing technology that the carbonization chamber pressure monotonic sealing valve is difficult to control the carbonization chamber and the gas collecting pipe separately. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the monotonic device of the coke oven carbonization chamber of the present invention;
[0017] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the back-blowing tank of the monotonic device of the coke oven carbonization chamber of the present invention;
[0018] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the cylinder of the monotonic device of the coke oven carbonization chamber of the present invention;
[0019] Figure 4 The utility model shows the monotonic device of the coke oven carbonization chamber. Figure 2 Schematic diagram of the three-dimensional structure with a partial enlargement at point A in the middle.
[0020] The marks in the attached figure are: 1. Coke oven carbonization chamber; 2. Bearing block; 3. Back-blowing tank; 301. Fixed block; 302. Air inlet pipe; 303. Solenoid valve; 4. Air outlet pipe; 5. Connecting pipe; 6. Hollow ball; 7. Bridge pipe water seal valve; 8. High-precision servo actuator; 9. Monotonic central control device; 10. Temperature detection ring; 11. Temperature sensor; 12. Connecting block; 13. Cylinder; 14. Turntable; 15. Rotating shaft; 16. Rocker arm; 17. Fisheye bearing; 18. Eccentric column. DETAILED DESCRIPTION
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] See also Figure 1-Figure 4The utility model provides an embodiment: a monotonic device for a coke oven carbonization chamber, comprising a coke oven carbonization chamber 1; a bearing block 2 is fixedly connected to the side wall of the coke oven carbonization chamber 1, a back-blowing tank 3 is fixedly connected to the upper end of the coke oven carbonization chamber 1, and a back-blowing mechanism is provided on the back-blowing tank 3; an air outlet pipe 4 is fixedly connected to the side wall of the coke oven carbonization chamber 1 in a through-type manner; one end of a connecting pipe 5 is fixedly connected to the lower end of the air outlet pipe 4, and a hollow ball 6 is fixedly connected to the other end of the connecting pipe 5; a bridge pipe water seal valve 7 is provided on the air outlet pipe 4, a high-precision servo actuator 8 and a monotonic central control device 9 are fixedly connected to the side wall of the bearing block 2, and a monotonic mechanism for rotating the valve stem of the bridge pipe water seal valve 7 is commonly provided on the bearing block 2 and the bridge pipe water seal valve 7;
[0023] The monotonic mechanism includes a connecting block 12, a cylinder 13, a rotating shaft 15, a rocker arm 16 and a fisheye bearing 17; the side wall of the bearing block 2 is fixedly connected to the connecting block 12, the upper end of the connecting block 12 is hinged to the cylinder 13, one end of the valve stem of the bridge pipe water seal valve 7 is fixedly connected to the rocker arm 16, the end of the rocker arm 16 away from the bridge pipe water seal valve 7 is fixedly connected to the eccentric column 18, the side wall of the eccentric column 18 is rotatably installed with a fisheye bearing 17, and the upper end of the output shaft of the cylinder 13 is fixed to the side wall of the fisheye bearing 17.
[0024] When in use, the high-precision servo actuator 8 is turned on to regulate the cylinder 13. The cylinder 13 is turned on so that the output shaft of the cylinder 13 can be extended and retracted inside the cylinder body, and the valve stem of the bridge pipe water seal valve 7 can be adjusted. The opening of the bridge pipe water seal valve 7 is controlled by the high-precision servo actuator 8. During the coking process, the opening of the bridge pipe water seal valve 7 is adjusted according to the pressure of the coke oven carbonization chamber 1, so that the coke oven carbonization chamber 1 maintains positive pressure throughout the entire coking cycle. By setting the high-precision servo actuator 8, without modifying the bridge pipe device, the carbonization chamber is guaranteed to be under the impact of the circulating ammonia water on the water seal valve disc. The speed and control accuracy of the pressure-stabilizing actuator must be improved. In order to ensure the control accuracy of the actuator, a ball screw structure is used inside the high-precision servo actuator 8, and the mechanical accuracy can reach 0.2 mm. Compared with pneumatic valves and ordinary electric actuators, the mechanical accuracy of the reducer is greatly improved, and the service life is also extended. Due to the high ambient temperature around the riser, the screw design adopts a high-temperature design, and the belts, nylon and other accessories that are not resistant to high temperatures are removed, so that the temperature resistance of the mechanical mechanism reaches 200 degrees Celsius. The position feedback uses an encoder, and the sensitivity of the feedback is greatly improved.
[0025] See also Figure 1-Figure 4 In this embodiment, a turntable 14 is fixed to the side wall of the valve stem of the bridge pipe water seal valve 7. The turntable 14 is made of stainless steel. When in use, the valve stem of the bridge pipe water seal valve 7 can also be quickly rotated by manually rotating the turntable 14.
[0026] See also Figure 1-Figure 4 In this embodiment, the cylinder 13 and the side wall of the coke oven carbonization chamber 1 are three meters apart, which can prevent the hot air in the coke oven carbonization chamber 1 from affecting the cylinder 13.
[0027] See also Figure 1-Figure 4 In this embodiment, the back-blowing mechanism includes a fixed block 301, an air intake pipe 302 and a solenoid valve 303; the upper end of the back-blowing tank 3 is fixedly connected to the fixed block 301, and the side wall of the fixed block 301 is fixedly connected to the air intake pipe 302. The air intake pipe 302 is L-shaped and one end extends to the interior of the back-blowing tank 3. A solenoid valve 303 is provided on the air intake pipe 302. The air intake pipe 302 can be externally connected to a hair dryer to facilitate blowing air inside the back-blowing tank 3. By using the back-blowing mechanism and periodically back-blowing the pressure-taking pipeline, the pipeline can be kept unobstructed.
[0028] See also Figure 1-Figure 4 In this embodiment, a temperature detection ring 10 is fixed to the upper part of the side wall of the coke oven carbonization chamber 1, and a temperature sensor 11 is fixed to the side wall of the temperature detection ring 10. One end of the temperature sensor 11 passes through the wall layer of the coke oven carbonization chamber 1 and extends to the interior of the coke oven carbonization chamber 1. When the temperature sensor 11 is turned on, the temperature inside the coke oven carbonization chamber 1 can be detected.
[0029] See also Figure 1-Figure 4 In this embodiment, the rocker arm 16 is made of stainless steel, and the eccentric column 18 is made of magnesium-manganese alloy. The rocker arm 16 and the eccentric column 18 have good corrosion resistance.
[0030] See also Figure 1-Figure 4 In this embodiment, the outer diameter of the back-blowing tank 3 is larger than the outer diameter of the coke oven carbonization chamber 1, and the fixed block 301 and the air inlet pipe 302 are both made of stainless steel. The back-blowing tank 3 can provide better protection for the top of the coke oven carbonization chamber 1.
[0031] Working principle: First, the high-precision servo actuator 8 is turned on to regulate the cylinder 13. Turning on the cylinder 13 allows the output shaft of the cylinder 13 to expand and contract inside the cylinder body, which can adjust the valve stem of the bridge pipe water seal valve 7. The opening of the bridge pipe water seal valve 7 is controlled by the high-precision servo actuator 8;
[0032] During the coking process, the opening of the bridge pipe water seal valve 7 is adjusted according to the pressure of the coke oven carbonization chamber 1, so that the coke oven carbonization chamber 1 maintains a positive pressure during the entire coking cycle. By setting a high-precision servo actuator 8, the bridge pipe device does not need to be modified, and the impact of the circulating ammonia water on the water seal valve disc must be dealt with to ensure that the pressure in the carbonization chamber is stable. The speed and control accuracy of the actuator must be improved. In order to ensure the control accuracy of the actuator, a ball screw structure is used inside the high-precision servo actuator 8, and the mechanical accuracy can reach 0.2 mm. Compared with pneumatic valves and ordinary electric actuators, the mechanical accuracy of the reducer is greatly improved, and the service life is also extended. Due to the high ambient temperature around the riser, the screw rod design adopts a high-temperature design, and the belts, nylon and other accessories that are not resistant to high temperatures are removed, so that the temperature resistance of the mechanical mechanism reaches 200 degrees Celsius. The position feedback adopts an encoder, and the feedback sensitivity is greatly improved.
[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.
Claims
1. A coke oven carbonization chamber monotonic device, comprising a coke oven carbonization chamber (1); characterized in that: The side wall of the coke oven carbonization chamber (1) is fixedly connected with a bearing block (2), the upper end of the coke oven carbonization chamber (1) is fixedly connected with a back-blowing tank (3), and the back-blowing tank (3) is provided with a back-blowing mechanism. The side wall of the coke oven carbonization chamber (1) is fixedly connected with an air outlet pipe (4) in a through-type manner, the lower end of the air outlet pipe (4) is fixedly connected with one end of a connecting pipe (5), and the other end of the connecting pipe (5) is fixedly connected with a hollow ball (6). A bridge pipe water seal valve (7) is provided on the air outlet pipe (4), a high-precision servo actuator (8) and a monotonic central control device (9) are fixedly connected to the side wall of the bearing block (2), and a monotonic mechanism for rotating the valve stem of the bridge pipe water seal valve (7) is provided on the bearing block (2) and the bridge pipe water seal valve (7); The monotonic mechanism comprises a connecting block (12), a cylinder (13), a rotating shaft (15), a rocker arm (16) and a fisheye bearing (17); the side wall of the bearing block (2) is fixedly connected to the connecting block (12), the upper end of the connecting block (12) is hingedly connected to the cylinder (13), one end of the valve stem of the bridge pipe water seal valve (7) is fixedly connected to the rocker arm (16), the end of the rocker arm (16) away from the bridge pipe water seal valve (7) is fixedly connected to the eccentric column (18), the side wall of the eccentric column (18) is rotatably mounted with the fisheye bearing (17), and the upper end of the output shaft of the cylinder (13) is fixedly connected to the side wall of the fisheye bearing (17).
2. The coke oven carbonization chamber monotonic device according to claim 1, characterized in that: A turntable (14) is fixedly connected to the side wall of the valve stem of the bridge pipe water seal valve (7), and the turntable (14) is made of stainless steel.
3. The coke oven carbonization chamber monotonic device according to claim 1, characterized in that: The cylinder (13) is three meters away from the side wall of the coke oven carbonization chamber (1).
4. The monotonic device for the coke oven carbonization chamber according to claim 1, characterized in that: The back-blowing mechanism comprises a fixed block (301), an air intake pipe (302) and a solenoid valve (303); the upper end of the back-blowing tank (3) is fixedly connected to the fixed block (301), the side wall of the fixed block (301) is fixedly connected to the air intake pipe (302), the air intake pipe (302) is L-shaped and one end extends to the interior of the back-blowing tank (3), and the solenoid valve (303) is provided on the air intake pipe (302).
5. The coke oven carbonization chamber monotonic device according to claim 1, characterized in that: A temperature detection ring (10) is fixedly connected to the upper part of the side wall of the coke oven carbonization chamber (1), and a temperature sensor (11) is fixedly connected to the side wall of the temperature detection ring (10). One end of the temperature sensor (11) passes through the wall layer of the coke oven carbonization chamber (1) and extends into the interior of the coke oven carbonization chamber (1).
6. The monotonic device for the coke oven carbonization chamber according to claim 1, characterized in that: The rocker arm (16) is made of stainless steel, and the eccentric column (18) is made of magnesium-manganese alloy.
7. The coke oven carbonization chamber monotonic device according to claim 1, characterized in that: The outer diameter of the back-blowing tank (3) is larger than the outer diameter of the coke oven carbonization chamber (1), and the fixed block (301) and the air inlet pipe (302) are both made of stainless steel.