Cleaning device and cleaning method for pressure tap of single-hole pressure regulating system of coke oven

Abstract

The invention discloses a cleaning device and a cleaning method for a pressure tapping of a single-hole pressure regulating system of a coke oven, the cleaning device comprises a pressure tapping assembly, a controller, and a pressure regulating execution unit, a steam purging valve, a pressure tapping valve and a pressure transmitter which are connected with the controller, the pressure tapping assembly comprises a Y-shaped tee joint, a purging pipe and a pressure tapping pipe, the Y-shaped tee joint is provided with a purging opening, a pressure tapping opening and a medium pressure opening, the purging opening is communicated with the purging pipe, the pressure tapping opening is communicated with the pressure tapping pipe, the medium pressure opening is communicated with a pressure tapping opening of the coke oven single-hole pressure regulating system, one end of the steam purging valve is arranged on the purging pipe, the other end of the steam purging valve is connected with a steam pipeline, and the pressure transmitter is arranged on the pressure tapping pipe. And the pressure tapping valve is arranged on the pressure tapping pipe between the pressure tapping pressure port and the pressure transmitter. The method replaces the current operation method for manually cleaning the blockage of the pressure tapping of the single-hole pressure regulating system of the coke oven, effectively reduces the manual operation time, avoids the industrial injury risk in the manual operation, and improves the production efficiency of automatic control of a production line.

Description

Technical Field

[0001] The invention belongs to the technical field of a single-hole pressure regulating system for a coke oven, and in particular relates to a cleaning device and a cleaning method for a pressure tapping port of a single-hole pressure regulating system for a coke oven. Background Art

[0002] The design scale of the coking project of the three blast furnace system project of Baosteel Zhanjiang Iron and Steel Co., Ltd. is 1.6 million tons of dry coke per year, and it adopts 2 × 65 holes and 7 meters of large-volume reheating top-loading coke ovens. The coke oven adopts a single-hole pressure regulating system for the coke oven carbonization chamber (referred to as: single-hole pressure regulating system) to ensure that the pressure at the bottom of the carbonization chamber is always in a micro-positive pressure state of 5~50 Pa during the coking of the coke oven. The pressure of the carbonization chamber is controlled in sections during the coking period, which effectively improves the quality of coke and extends the life of the coke oven, and reduces the pollution of unorganized emissions from the coke oven; the single-hole pressure regulating system communicates and exchanges data with the four major vehicles and the coke oven control system to realize the automation of the coke oven coal loading, coking, and coke pushing processes. In automatic control, a pressure taking component is set on the pressure taking port of the single-hole pressure regulating system, and pressure detection is completed through the pressure taking component to ensure normal operation. The accuracy of pressure detection controls the stability of the entire production system.

[0003] Because the detection medium of the coke oven single-hole pressure measurement system is raw gas, the on-site pressure measurement system is often clogged by raw gas by-products such as tar and naphthalene attached to the pressure tapping port of the single-hole pressure regulating system during use, causing pressure measurement distortion and control chaos, which is not conducive to the stability of the coke oven single-hole pressure regulating system.

[0004] The current treatment plan is to manually clean the pressure port of the coke oven single-hole pressure regulating system, and manually dredge the pressure port every 12 hours to ensure the stability of production. However, there are the following problems with manually dredging the pressure port: 1. The labor cost is high. The time for unclogging the pressure-taking assembly of each carbonization chamber is usually 3-5 minutes. It takes 390-650 minutes, or 6.5-10.8 hours, to unblock all 130 coke ovens in Zhanjiang Phase III, which is time-consuming and labor-intensive. In addition, the pressure measuring point is near the riser bridge pipe, which is hot all year round and is very prone to heatstroke.

[0005] 2. Manual combing has the problem of high and low skill levels. If the pressure port is not combed thoroughly, blockage failure will occur again during the operation of the single-hole pressure regulating system, affecting production operations.

[0006] 3. When people are combing the pressure ports, the pressure is in a distorted state and the automatic control of the system needs to be stopped. The system will be put into automatic control again after the pressure is stabilized and the unblocking is completed, which affects the rhythm of the coking operation of the coke oven. Summary of the invention

[0007] In order to solve at least one of the above technical problems, the present invention provides a cleaning device and a cleaning method for a pressure tapping port of a single-hole pressure regulating system of a coke oven.

[0008] The purpose of the present invention is achieved through the following technical solutions: The invention provides a cleaning device for a pressure-taking port of a single-hole pressure-regulating system of a coke oven, comprising a pressure-taking component, a controller, and a pressure-regulating executive unit, a steam purge valve, a pressure-taking valve and a pressure transmitter, all of which are connected to the controller. The pressure-taking component comprises a Y-type tee, a purge pipe and a pressure-taking pipe. The Y-type tee is provided with a purge port, a pressure-taking port and a medium pressure port. The purge port is connected to the purge pipe, the pressure-taking port is connected to the pressure-taking pipe, the medium pressure port is connected to the pressure-taking port of the single-hole pressure-regulating system of the coke oven. One end of the steam purge valve is arranged on the purge pipe, and the other end is connected to a steam pipeline. The pressure transmitter is arranged on the pressure-taking pipe, and the pressure-taking valve is arranged on the pressure-taking pipe between the pressure-taking port and the pressure transmitter. The pressure-regulating executive unit sends valve opening information monitored in real time to the controller, and the pressure transmitter sends pressure information monitored in real time to the controller. The controller sends purge valve opening and closing information and pressure valve opening and closing information to the steam purge valve and the pressure-taking valve respectively according to the received valve opening information and pressure information.

[0009] As a further improvement, the pressure regulating execution unit comprises a single-hole pressure actuator and a valve controller for controlling the pressure of the coke oven carbonization chamber, and the single-hole pressure actuator and the valve controller are both connected to the controller.

[0010] As a further improvement, the steam purge valve is a normally closed valve, and the pressure taking valve is a normally open valve.

[0011] The present invention provides a cleaning device for a pressure taking port of a single-hole pressure regulating system of a coke oven, comprising a pressure taking component, a controller, and a pressure regulating executive unit, a steam purge valve, a pressure taking valve and a pressure transmitter all connected to the controller. The pressure taking component comprises a Y-type tee, a purge pipe and a pressure taking pipe. The Y-type tee is provided with a purge port, a pressure taking port and a medium pressure port. The purge port is connected to the purge pipe, the pressure taking port is connected to the pressure taking pipe, and the medium pressure port is connected to the pressure taking port of the single-hole pressure regulating system of the coke oven. One end of the steam purge valve is arranged on the purge pipe, and the other end is connected to a steam pipeline. The pressure transmitter is arranged on the pressure taking pipe, and the pressure taking valve is arranged on the pressure taking pipe between the pressure taking port and the pressure transmitter. The pressure regulating executive unit sends the valve opening information monitored in real time to the controller, and the pressure transmitter sends the pressure information monitored in real time to the controller. The controller sends the purge valve opening and closing information and the pressure taking valve opening and closing information to the steam purge valve and the pressure taking valve according to the received valve opening information and pressure information. When in use, the controller controls the pressure regulating execution unit to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating execution unit sends the valve opening information to the controller, and the pressure transmitter sends the real-time monitored negative pressure information to the controller; the controller judges according to the received valve opening information and pressure information, closes the pressure taking valve, and opens the steam purge valve to purge the pressure taking port of the coke oven single-hole pressure regulating system; after the purge is completed, close the steam purge valve, and open the pressure taking valve; the pressure transmitter monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control. The present invention replaces the current manual cleaning method of the blockage of the pressure taking port of the coke oven single-hole pressure regulating system, effectively reduces the manual operation time, avoids the risk of work-related injuries in manual operation, and improves the production efficiency of the production line automation control.

[0012] The present invention also provides a method for cleaning a pressure port of a single-hole pressure regulating system of a coke oven, comprising any further improvement of the cleaning device for the pressure port of a single-hole pressure regulating system of a coke oven, and the steps of the cleaning method are as follows: S1. The controller controls the pressure regulating executive unit to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating executive unit sends the valve opening information to the controller, and the pressure transmitter sends the real-time monitored negative pressure information to the controller; S2. After judging based on the received valve opening information and pressure information, the controller closes the pressure taking valve and opens the steam purge valve to purge the pressure taking port of the coke oven single-hole pressure regulating system; S3. After the purge is completed, close the steam purge valve and open the pressure valve; S4. The pressure transmitter monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

[0013] As a further improvement, the cleaning method can be set to automatic cleaning mode and manual cleaning mode by the controller according to the operation mode. When in automatic cleaning mode, according to the pressure regulation method of the coke oven single-hole pressure regulating system, the steps of the cleaning method are automatically executed while the coke oven single-hole pressure regulating system performs each cycle of ammonia flushing operation; when in manual cleaning mode, the steps of the cleaning method are manually executed when the pressure tapping port of the coke oven single-hole pressure regulating system is abnormally blocked.

[0014] As a further improvement, the cleaning steps of the automatic cleaning mode are specifically as follows: S11. When the coke oven single-hole pressure regulating system performs ammonia flushing operation in each cycle, the controller controls the pressure regulating execution unit to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating execution unit sends the valve opening information to the controller, and the pressure transmitter sends the negative pressure information monitored in real time to the controller; S12, after the controller makes a judgment based on the received valve opening information and pressure information, it closes the pressure taking valve and opens the steam purge valve to purge the pressure taking port of the single-hole pressure regulating system of the coke oven during the ammonia flushing period; S13, when the ammonia water flushing is completed, the purge is completed, the steam purge valve is closed, and the pressure valve is opened; S14. After the ammonia flushing operation is completed, the pressure transmitter monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

[0015] As a further improvement, the cleaning steps of the manual cleaning mode are specifically as follows: S21, the coke oven single-hole pressure regulating system first stops the pressure closed-loop automatic control, and the controller controls the pressure regulating executive unit to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure. At the same time, the pressure regulating executive unit sends the valve opening information to the controller, and the pressure transmitter sends the real-time monitored negative pressure information to the controller; S22, after the controller makes a judgment based on the received valve opening information and pressure information, it closes the pressure taking valve and opens the steam purge valve to purge the pressure taking port of the coke oven single-hole pressure regulating system; S23. After the purge is completed, close the steam purge valve and open the pressure valve; S24. The pressure transmitter monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

[0016] The cleaning method for the pressure tapping port of a single-hole pressure regulating system of a coke oven provided by the present invention adopts any further improvement of the above-mentioned cleaning device for the pressure tapping port of a single-hole pressure regulating system of a coke oven, and it should have the same or corresponding technical effect, so it will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a cleaning device for a pressure tapping port of a single-hole pressure regulating system of a coke oven according to the present invention; Figure 2 It is a schematic flow chart of an automatic cleaning mode of a cleaning method for a pressure tapping port of a single-hole pressure regulating system of a coke oven according to the present invention; Figure 3 The present invention is a schematic flow chart of a manual cleaning mode of a cleaning method for a pressure tapping port of a single-hole pressure regulating system of a coke oven. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0020] Combination Figure 1As shown, the embodiment of the present invention provides a cleaning device for the pressure port of the single-hole pressure regulating system of the coke oven, including a pressure taking component, a controller 2, and a pressure regulating execution unit 3, a steam purge valve 4, a pressure taking valve 5 and a pressure transmitter 6 all connected to the controller 2. The controller 2 can be selected but not limited to a programmable logic controller (PLC), a single-chip microcomputer or a microprocessor, preferably a programmable logic controller, which receives input signals, processes them according to internal programs and outputs control signals. The pressure taking component includes a Y-type tee 1, a purge pipe 7 and a pressure taking pipe 8. The Y-type tee 1 is provided with a purge port, a pressure taking pressure port and a medium pressure port. The purge port is connected to the purge pipe 7, the pressure taking pressure port is connected to the pressure taking pipe 8, and the medium pressure port is connected to the pressure taking port of the single-hole pressure regulating system of the coke oven. One end of the steam purge valve 4 is arranged on the purge pipe 7, and the other end is connected to a steam pipeline. The pressure transmitter 6 is arranged on the pressure taking pipe 8, and the pressure taking valve 5 is arranged on the pressure taking pipe 8 between the pressure taking pressure port and the pressure transmitter 6. Preferably, the steam purge valve 4 adopts a normally closed valve to prevent leakage of the medium in the purge pipe 7, and the pressure valve 5 adopts a normally open valve so that the pressure transmitter 6 can monitor the pressure change of the medium in the pressure pipe 8 in real time. The pressure regulating execution unit 3 includes a single-hole pressure actuator and a valve controller for controlling the pressure of the coke oven carbonization chamber. The single-hole pressure regulating actuator controls the pressure of the high-pressure medium within a suitable range to avoid equipment failure or safety accidents caused by excessively high or low pressure. The single-hole pressure regulating actuator controls the pressure value by adjusting the valve opening through the valve controller. The single-hole pressure actuator and the valve controller are both connected to the controller 2. During the steam purge process, the Y-type tee 1 in the pressure taking assembly uses the principle of the Bernoulli equation to form a negative pressure at the Y-type tee 1, and the condensed water after the steam purge will not accumulate, so as to avoid the entry of high-temperature steam and affect the pressure measurement. The pressure regulation execution unit 3 sends the real-time monitored valve opening information to the controller 2, and the pressure transmitter 6 sends the real-time monitored pressure information to the controller 2. The controller 2 sends the purge valve opening and closing information and the pressure taking valve opening and closing information to the steam purge valve 4 and the pressure taking valve 5 respectively according to the received valve opening information and pressure information.

[0021] When the embodiment of the present invention is in use, the controller 2 controls the pressure regulating execution unit 3 to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating execution unit 3 sends the valve opening information to the controller 2, and the pressure transmitter 6 sends the real-time monitored negative pressure information to the controller 2; the controller 2 closes the pressure valve 5 valve after judging according to the received valve opening information and pressure information, and opens the steam purge valve 4 valve to purge the pressure port of the coke oven single-hole pressure regulating system; after the purge is completed, the steam purge valve 4 valve is closed, and the pressure valve 5 valve is opened; the pressure transmitter 6 monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control. The embodiment of the present invention replaces the current manual cleaning method of the blockage of the pressure port of the coke oven single-hole pressure regulating system, effectively reduces the manual operation time, avoids the risk of work-related injuries in manual operation, and improves the production efficiency of the production line automation control.

[0022] The embodiment of the present invention further provides a method for cleaning a pressure port of a single-hole pressure regulating system of a coke oven, including any preferred implementation of the cleaning device for a pressure port of a single-hole pressure regulating system of a coke oven described above, and a combination of the implementations without conflict, which should have the same or corresponding beneficial effects as the cleaning device for a pressure port of a single-hole pressure regulating system of a coke oven, which will not be repeated here, and the steps of the cleaning method are as follows: S1, the controller 2 controls the pressure regulating execution unit 3 to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating execution unit 3 sends the valve opening information to the controller 2, and the pressure transmitter 6 sends the real-time monitored negative pressure information to the controller 2; S2, the controller 2 judges according to the received valve opening information and pressure information, closes the pressure valve 5, and opens the steam purge valve 4 to purge the pressure port of the coke oven single-hole pressure regulating system; S3. After the purge is completed, close the steam purge valve 4 and open the pressure valve 5; S4. The pressure transmitter 6 monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

[0023] Preferably, the cleaning method can be set to automatic cleaning mode and manual cleaning mode by the controller 2 according to the operation mode. Specifically, the controller 2 switches between the automatic cleaning mode and the manual cleaning mode by connecting, including but not limited to, buttons or displays. When in the automatic cleaning mode, the controller 2 outputs control information to the pressure regulation execution unit 3, and automatically executes the steps of the cleaning method while the coke oven single-hole pressure regulating system performs each cycle of ammonia flushing operation according to the pressure regulation method of the coke oven single-hole pressure regulating system. After every 4 hours of ammonia flushing operation, the single-hole pressure regulating actuator needs to perform an ammonia flushing operation, and the operation time is 5 seconds, to prevent the by-products such as tar and naphthalene on the raw gas from adhering to the valve of the single-hole pressure regulating actuator, resulting in inaccurate control or equipment failure; when in the manual cleaning mode, the steps of the cleaning method are manually executed when the pressure port of the coke oven single-hole pressure regulating system is abnormally blocked.

[0024] Combination Figure 2 As shown in the figure, the cleaning steps of the automatic cleaning mode are as follows: S11, when the coke oven single-hole pressure regulating system performs the ammonia flushing operation in each cycle, the controller 2 controls the pressure regulating execution unit 3 to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating execution unit 3 sends the valve opening information to the controller 2, and the pressure transmitter 6 sends the negative pressure information monitored in real time to the controller 2; S12, after the controller 2 makes a judgment based on the received valve opening information and pressure information, it closes the pressure taking valve 5 and opens the steam purge valve 4 to purge the pressure taking port of the single-hole pressure regulating system of the coke oven during the ammonia flushing period; S13, when the ammonia water flushing is completed, the purge is completed, the steam purge valve 4 is closed, and the pressure valve 5 is opened; S14, the ammonia water flushing operation is completed, and the pressure transmitter 6 monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

[0025] Combination Figure 3 As shown in the figure, the cleaning steps of the manual cleaning mode are as follows: S21, the coke oven single-hole pressure regulating system first stops the pressure closed-loop automatic control, the controller 2 controls the pressure regulating executive unit 3 to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, and at the same time, the pressure regulating executive unit 3 sends the valve opening information to the controller 2, and the pressure transmitter 6 sends the real-time monitored negative pressure information to the controller 2; S22, after the controller 2 makes a judgment based on the received valve opening information and pressure information, it closes the pressure taking valve 5 and opens the steam purge valve 4 to purge the pressure taking port of the coke oven single-hole pressure regulating system; S23, after the purge is completed, close the steam purge valve 4 and open the pressure valve 5; S24, the pressure transmitter 6 monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

[0026] Baosteel Zhanjiang Iron and Steel Coke Oven adopts a 4×65-hole JNX2-70-2 type reheating top-loading coke oven, which was put into operation in April 2021. It has been used in combination with the embodiments of the present invention. The on-site inspection results are good. After 3 months of operation, there has been no blockage in the pressure tapping of the single-hole pressure regulating system.

[0027] Many specific details are set forth in the above description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein, and therefore, they should not be construed as limiting the scope of protection of the present invention.

[0028] In summary, although the present invention lists the above-mentioned preferred embodiments, it should be noted that although technicians in this field can make various changes and modifications, unless such changes and modifications deviate from the scope of the present invention, they should be included in the protection scope of the present invention.

Claims

1. A cleaning device for a pressure tapping port of a single-hole pressure regulating system of a coke oven, characterized in that: The invention comprises a pressure taking component, a controller (2), a pressure regulating execution unit (3), a steam purge valve (4), a pressure taking valve (5) and a pressure transmitter (6) all connected to the controller (2), wherein the pressure taking component comprises a Y-shaped tee (1), a purge pipe (7) and a pressure taking pipe (8), wherein the Y-shaped tee (1) is provided with a purge port, a pressure taking port and a medium pressure port, wherein the purge port is connected to the purge pipe (7), the pressure taking port is connected to the pressure taking pipe (8), and the medium pressure port is connected to the pressure taking port of the coke oven single-hole pressure regulating system, wherein one end of the steam purge valve (4) is arranged on the purge pipe ( 7), the other end of which is connected to a steam pipeline, a pressure transmitter (6) is arranged on a pressure taking pipe (8), a pressure taking valve (5) is arranged on the pressure taking pipe (8) between the pressure taking pressure port and the pressure transmitter (6), the pressure regulation execution unit (3) sends the valve opening information monitored in real time to the controller (2), the pressure transmitter (6) sends the pressure information monitored in real time to the controller (2), and the controller (2) sends the steam purge valve opening and closing information and the pressure taking valve opening and closing information to the steam purge valve (4) and the pressure taking valve (5) respectively according to the received valve opening and pressure information.

2. The cleaning device for the pressure tapping port of the single-hole pressure regulating system of a coke oven according to claim 1, characterized in that: The pressure regulating execution unit (3) comprises a single-hole pressure actuator and a valve controller for controlling the pressure of the coke oven carbonization chamber, and the single-hole pressure actuator and the valve controller are both connected to the controller (2).

3. The cleaning device for the pressure tapping port of the single-hole pressure regulating system of a coke oven according to claim 1, characterized in that: The steam purge valve (4) is a normally closed valve, and the pressure taking valve (5) is a normally open valve.

4. A method for cleaning the pressure tapping port of a single-hole pressure regulating system of a coke oven, characterized in that: The cleaning device for the pressure tapping port of a single-hole pressure regulating system of a coke oven according to any one of claims 1 to 3 is included, and the steps of the cleaning method are as follows: S1, the controller (2) controls the pressure regulating execution unit (3) to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating execution unit (3) sends the valve opening information to the controller (2), and the pressure transmitter (6) sends the negative pressure information monitored in real time to the controller (2); S2, the controller (2) determines based on the received valve opening information and pressure information, closes the pressure taking valve (5), and opens the steam purge valve (4) to purge the pressure taking port of the coke oven single-hole pressure regulating system; S3. After the purge is completed, close the steam purge valve (4) and open the pressure valve (5); S4. The pressure transmitter (6) monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

5. The cleaning method for the pressure tapping port of the single-hole pressure regulating system of a coke oven according to claim 4, characterized in that: The cleaning method can be set to an automatic cleaning mode and a manual cleaning mode by the controller (2) according to the operation mode. When in the automatic cleaning mode, according to the pressure regulating method of the coke oven single-hole pressure regulating system, the steps of the cleaning method are automatically executed while the coke oven single-hole pressure regulating system performs each cycle of ammonia flushing operation; when in the manual cleaning mode, the steps of the cleaning method are manually executed when the pressure outlet of the coke oven single-hole pressure regulating system is abnormally blocked.

6. The cleaning method for the pressure tapping port of the single-hole pressure regulating system of a coke oven according to claim 5, characterized in that: The cleaning steps of the automatic cleaning mode are as follows: S11, when the coke oven single-hole pressure regulating system performs an ammonia flushing operation in each cycle, the controller (2) controls the pressure regulating execution unit (3) to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure in the coke oven carbonization chamber becomes negative pressure, so as to jump out of the pressure closed-loop control of the coke oven single-hole pressure regulating system. At the same time, the pressure regulating execution unit (3) sends valve opening information to the controller (2), and the pressure transmitter (6) sends real-time monitored negative pressure information to the controller (2); S12, the controller (2) makes a judgment based on the received valve opening information and pressure information, closes the pressure taking valve (5), and opens the steam purge valve (4), and purges the pressure taking port of the coke oven single-hole pressure regulating system during the ammonia water flushing period; S13, when the ammonia water flushing is completed, the purge is completed, the steam purge valve (4) is closed, and the pressure valve (5) is opened; S14, after the ammonia flushing operation is completed, the pressure transmitter (6) monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

7. The cleaning method for the pressure tapping port of a single-hole pressure regulating system of a coke oven according to claim 5, characterized in that: The cleaning steps of the manual cleaning mode are as follows: S21, the coke oven single-hole pressure regulating system first stops the pressure closed-loop automatic control, the controller (2) controls the pressure regulating execution unit (3) to open the valve opening of the coke oven single-hole pressure regulating system to the maximum, so that the pressure of the coke oven carbonization chamber becomes negative pressure, and at the same time, the pressure regulating execution unit (3) sends the valve opening information to the controller (2), and the pressure transmitter (6) sends the negative pressure information monitored in real time to the controller (2); S22, the controller (2) makes a judgment based on the received valve opening information and pressure information, closes the pressure taking valve (5), and opens the steam purge valve (4) to purge the pressure taking port of the coke oven single-hole pressure regulating system; S23, after the purge is completed, close the steam purge valve (4) and open the pressure valve (5); S24, the pressure transmitter (6) monitors the pressure information in real time until the measured value is restored, and the coke oven single-hole pressure regulating system enters the pressure closed-loop automatic control.

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