Rotary sealing valve jamming checking and processing method

Abstract

The invention relates to the technical field of dry quenching, and discloses a rotary sealing valve jamming checking processing method which is applied to a dry quenching coke discharging device and comprises the steps that in response to jamming faults of a rotary sealing valve of the dry quenching coke discharging device, the rotary sealing valve is switched to be in an on-site operation mode, executing inching forward and reverse rotation operation and checking whether jamming foreign matters are discharged or not; if the jamming foreign matter is not discharged, the double-branch chute of the coke dry quenching and discharging device and a body of the rotary sealing valve are subjected to classified troubleshooting, and the blockage troubleshooting cause of the double-branch chute or the jamming troubleshooting cause of the body are obtained; and the jamming object is removed according to the blockage troubleshooting cause or the faulty accessory is removed according to the jamming troubleshooting cause of the body, so that the coke discharging operation of the dry quenching coke discharging device is recovered. Through the scheme of the invention, the problems of difficult fault positioning and long processing time caused by unorganized repeated troubleshooting in the prior art are solved, the troubleshooting efficiency and accuracy are improved, and the safety risk of operators is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dry quenching, in particular to a rotary seal valve blockage troubleshooting and processing method. BACKGROUND

[0002] In the coking process of an ironworks, the dry quenching system is a key device for realizing red coke cooling and waste heat utilization, and its coke discharging device is usually operated under full automatic control, and the whole system is operated in a fully closed manner. During the coke discharging process of the dry quenching, red coke is loaded into a dry quenching furnace by a hoist, cooled by inert gas blown by a circulating fan, and then discharged through a coke discharging device and then conveyed to a blast furnace coke bin by a belt. The heat generated during the gas circulation is recycled after being absorbed and cooled by a boiler, and the steam generated by the boiler is used for waste heat power generation.

[0003] The coke discharging device of the dry quenching mainly comprises a flat gate, a vibrating feeder, a rotary seal valve, a double bifurcated chute and a conveying belt. The rotary seal valve, as a core component of the coke discharging device, functions to isolate the gas in the furnace while discharging coke, thereby ensuring the closed operation of the system. However, in actual production, the rotary seal valve often stops running due to blockage by foreign matter, causing the coke discharging to be interrupted. Since any perforation of the coke discharging device will cause environmental pollution, and the coke discharging interruption for too long will reduce the evaporation amount of the waste heat steam, even cause the steam to be cracked, power generation to be stopped, and the coke supply to the blast furnace to be interrupted, thereby causing the blast furnace condition to fluctuate and the control difficulty to increase.

[0004] In the prior art, when the rotary seal valve is blocked, it is usually processed by unorganized repeated troubleshooting, and there is a lack of systematic troubleshooting process and processing method, which results in long troubleshooting time, high difficulty in eliminating the fault, and safety risks. SUMMARY

[0005] Therefore, the present application provides a rotary seal valve blockage troubleshooting and processing method, which solves the problems of difficult fault positioning and long processing time caused by unorganized repeated troubleshooting in the prior art, improves the troubleshooting efficiency and accuracy, and reduces the safety risks of workers.

[0006] To achieve the above purpose, the present application provides a rotary seal valve blockage troubleshooting and processing method, which is applied to a dry quenching coke discharging device, and the method comprises the following steps: In response to a blockage fault of a rotary seal valve of the dry quenching coke discharging device, the rotary seal valve is switched to an on-site operation mode, a point operation forward and reverse operation is performed, and whether the blockage foreign matter is discharged is checked; If the blockage foreign matter is not discharged, the double bifurcated chute of the dry quenching coke discharging device and the body of the rotary seal valve are classified and troubleshooted respectively, and the blockage troubleshooting causes of the double bifurcated chute or the blockage troubleshooting causes of the body are obtained; According to the cause of the blockage, the blockage is removed or the faulty accessory is removed according to the cause of the blockage of the body, so as to restore the dry quenching coke discharging device to operate.

[0007] In some embodiments, the dry quenching coke discharging device comprises a dry quenching furnace, a flat gate, an electromagnetic vibrating feeder, an intermediate chute, the rotary sealing valve, the double bifurcated chute and a conveying belt in sequence.

[0008] In some embodiments, the method for removing the blockage of the rotary sealing valve further comprises: If the blockage is removed, the original control mode of the rotary sealing valve is restored, so as to restore the dry quenching coke discharging device to operate.

[0009] In some embodiments, the causes of the blockage of the double bifurcated chute include two types of blockage caused by the stop of the conveying belt and blockage caused by the blockage of foreign matters in the double bifurcated chute.

[0010] In some embodiments, the removing of the blockage according to the cause of the blockage comprises: If the cause of the blockage is the stop of the conveying belt, the conveying belt is restored to operate after the operation fault of the conveying belt is removed, or the double bifurcated chute is dredged by switching to a standby belt passage.

[0011] In some embodiments, the removing of the blockage according to the cause of the blockage further comprises: If the cause of the blockage is the blockage of foreign matters in the double bifurcated chute, the foreign matters are removed and the double bifurcated chute is dredged.

[0012] In some embodiments, the causes of the blockage of the body of the rotary sealing valve include two types of blockage caused by the blockage of foreign matters in the blades in the body and blockage caused by the damage and falling of sealing accessories in the body.

[0013] In some embodiments, the removing of the faulty accessory according to the cause of the blockage of the body comprises: If the cause of the blockage is the damage and falling of the sealing accessories in the body, the manhole cover of the sealing cavity in the rotary sealing valve is opened and the damaged sealing accessories are removed.

[0014] In some embodiments, the removing of the faulty accessory according to the cause of the blockage of the body further comprises: If the cause of the blockage is the blockage of foreign matters in the blades in the body, the manhole cover of the intermediate chute is opened and the foreign matters are removed.

[0015] In some embodiments, after the cause of the blockage is checked and the blockage is removed or the faulty accessory is removed according to the cause of the blockage of the body, the method further comprises: The rotating sealing valve is manually tested and rotated, and the coke discharging operation of the dry quenching coke discharging device is restored after confirming that there is no blockage.

[0016] The rotating sealing valve blockage checking and processing method has at least the following beneficial technical effects: the processing flow of the rotating sealing valve blockage is standardized into a systematic method of first manual operation, then classification and checking of the double bifurcated chute blockage or the body blockage, and finally removal of foreign matters or removal of accessories according to specific causes, the problems of difficult fault positioning and long processing time caused by disorganized repeated checking in the prior art are solved, the checking efficiency and accuracy are significantly improved, the safety risk of the operating personnel is reduced, the coke discharging can be quickly restored, and the stable operation of the dry quenching waste heat power generation system and the continuity of the blast furnace coke supply are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other embodiments can be obtained by those skilled in the art without creating any inventive labor on the basis of these drawings.

[0018] Figure 1 a block diagram of an embodiment of the rotating sealing valve blockage checking and processing method provided by the present application; Figure 2 a schematic diagram of an embodiment of the process flow diagram of the dry quenching coke discharging device provided by the present application; Figure 3 a schematic diagram of an embodiment of the rotating sealing valve blockage checking logic flow provided by the present application. DETAILED DESCRIPTION

[0019] In order to make the objects, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in combination with specific embodiments and with reference to the drawings.

[0020] It should be noted that all the expressions of "first" and "second" in the embodiments of the present application are used to distinguish two same name but different entities or different parameters, and it can be seen that "first" and "second" are only for the convenience of description, and should not be understood as a limitation of the embodiments of the present application. The subsequent embodiments will not be described one by one.

[0021] Based on the above purpose, the present application provides a rotating sealing valve blockage checking and processing method, which is applied to a dry quenching coke discharging device. Figure 1As shown, the rotating seal valve jam troubleshooting method comprises the following steps: Step S100, in response to the rotating seal valve of the dry quenching coke discharging device occurring a jam fault, switching the rotating seal valve to an on-site operation mode, performing a jog forward and reverse operation and checking whether the jamming foreign matter is discharged; Step S200, if the jamming foreign matter is not discharged, respectively classifying and troubleshooting the double bifurcated chute and the body of the rotating seal valve of the dry quenching coke discharging device, to obtain a blocking material troubleshooting cause of the double bifurcated chute or a jamming troubleshooting cause of the body; Step S300, according to the blocking material troubleshooting cause, removing the jamming matter or according to the jamming troubleshooting cause of the body, removing the faulty accessories, to restore the coke discharging operation of the dry quenching coke discharging device.

[0022] The rotating seal valve jam troubleshooting method of the present application standardizes the processing flow after the rotating seal valve is jammed into a systematic method of first on-site jogging, then classifying and troubleshooting the double bifurcated chute blocking or the body jamming, and finally removing the foreign matter or removing the accessories according to the specific cause, solves the problems of difficult fault positioning and long processing time caused by disorganized repeated troubleshooting in the prior art, significantly improves the troubleshooting efficiency and accuracy, reduces the safety risk of the operating personnel, and at the same time can quickly restore the coke discharging, ensures the stable operation of the dry quenching waste heat power generation system and the continuity of the blast furnace coke supply.

[0023] In some embodiments, the dry quenching coke discharging device comprises a dry quenching furnace, a flat gate, an electromagnetic vibrating feeder, an intermediate chute, a rotating seal valve, a double bifurcated chute and a conveying belt which are sequentially communicated. Figure 2 As shown, the cooled coke in the dry quenching furnace sequentially passes through the flat gate, the electromagnetic vibrating feeder and the intermediate chute into the rotating seal valve, the coke discharged through the rotating seal valve enters the double bifurcated chute, and finally is conveyed to the blast furnace coke bin by the conveying belt.

[0024] In some embodiments, the rotating seal valve jam troubleshooting method of the present application further comprises: if the jamming foreign matter is discharged, restoring the original control mode of the rotating seal valve, to restore the coke discharging operation of the dry quenching coke discharging device. When the rotating seal valve occurs a jam fault, the operator first switches the control switch of the rotating seal valve to the field, and performs the alternating operation of forward and reverse rotation for multiple times in the field jogging mode, to try to discharge the jamming foreign matter. If the foreign matter is successfully discharged by the jog forward and reverse operation, the original control mode of the rotating seal valve is restored, so that the dry quenching coke discharging device restores the normal coke discharging operation. If the foreign matter is not discharged by the jog forward and reverse operation, the double bifurcated chute and the body of the rotating seal valve need to be simultaneously troubleshooted. While troubleshooting the double bifurcated chute blocking, the operator can continue to observe the on-site jogging state of the rotating seal valve, so as to quickly locate the fault point.

[0025] In some implementations, the causes of blockage in the double-fork chute include two categories: blockage caused by the conveyor belt stopping and blockage caused by foreign objects getting stuck in the double-fork chute.

[0026] In some implementations, clearing obstructions based on the cause of the blockage includes: if the blockage is caused by the conveyor belt stopping, after investigating and eliminating the malfunction of the conveyor belt, restoring power to the conveyor belt, or switching to the backup belt path and clearing the double-fork chute.

[0027] In some implementations, the process of removing obstructions based on the cause of the blockage also includes: if the blockage is caused by a foreign object stuck in the double-fork chute, removing the foreign object and clearing the double-fork chute.

[0028] like Figure 3 As shown, the method of this invention further distinguishes the causes of material blockage in the double-fork chute for troubleshooting. The causes of material blockage in the double-fork chute include two categories: blockage caused by the conveyor belt stopping operation and blockage caused by foreign objects lodged in the double-fork chute. If the blockage is caused by the conveyor belt stopping operation, the operator needs to troubleshoot and eliminate the conveyor belt malfunction, restore power to the conveyor belt, or switch to the backup belt path and clear the double-fork chute. If the blockage is caused by foreign objects lodged in the double-fork chute, the foreign objects need to be removed and the double-fork chute cleared. For example, the operator can open the inspection hole of the double-fork chute, use tools to remove the lodged foreign objects, and resume coke discharge after confirming that the chute is clear.

[0029] In some implementations, the causes of jamming in the rotary sealing valve body include two categories: jamming caused by foreign objects stuck in the blades inside the body, and jamming caused by damage or detachment of sealing accessories inside the body.

[0030] In some embodiments, troubleshooting the cause of the jamming and removing the faulty accessory includes: if the jamming is caused by damage or detachment of a sealing accessory inside the body, opening the manhole cover of the sealing cavity in the rotary sealing valve and removing the damaged sealing accessory.

[0031] In some implementations, the removal of faulty accessories based on troubleshooting the cause of the jamming in the main body also includes: if the jamming is caused by a foreign object stuck in the blade inside the main body, opening the manhole cover of the intermediate chute and removing the foreign object.

[0032] like Figure 3As shown, the method of the present application further distinguishes the causes of the blockage of the rotating seal valve body. The causes of the blockage of the rotating seal valve body include two types: blockage caused by foreign matter stuck in the blades inside the body and blockage caused by damaged and fallen sealing accessories inside the body. If the cause of the blockage is blockage caused by foreign matter stuck in the blades inside the body, the operator needs to open the manhole cover of the intermediate chute, check and remove the foreign matter stuck in the blades. For example, after confirming the safety of the gas composition inside the rotating seal valve, open the manhole cover of the intermediate chute, use tools to remove the foreign matter, and then close the manhole cover. If the cause of the blockage is blockage caused by damaged and fallen sealing accessories inside the body, the operator needs to open the manhole cover of the sealing cavity of the rotating seal valve and remove the damaged sealing accessories. For example, after confirming the safety, open the manhole cover of the sealing cavity, remove the damaged and fallen sealing accessories, and close the manhole cover after cleaning.

[0033] In some embodiments, after removing the blockage according to the cause of the blockage or removing the faulty accessories according to the cause of the blockage of the body, the method further comprises manually turning the rotating seal valve to confirm that there is no blockage and then restoring the operation of the coke discharging device of the dry quenching coke discharging device. After removing the blockage according to the cause of the blockage or removing the faulty accessories according to the cause of the blockage of the body, the operator also needs to manually turn the rotating seal valve. For example, use a special wrench to turn the drive shaft of the rotating seal valve for more than one revolution, confirm that there is no blockage and abnormal noise, and then restart the rotating seal valve to restore the operation of the coke discharging device of the dry quenching coke discharging device.

[0034] In addition, before opening the manhole cover to remove the foreign matter or remove the accessories, the gas composition inside the rotating seal valve needs to be detected to confirm that the content of toxic and harmful gases and the content of oxygen are within a safe range, and then the subsequent operation can be performed to ensure the safety of the operator.

[0035] In summary, the method for troubleshooting and processing the blockage of the rotating seal valve of the present application can quickly and accurately locate the fault cause and take targeted processing measures through the standardized classification and troubleshooting process, effectively shortening the fault processing time, reducing the operation risk, and ensuring the continuous and stable operation of the dry quenching coke system. The support for the smooth operation of the coke oven provides support for the smooth operation of the coke oven, reduces the environmental pollution caused by water quenching coke, is conducive to clean production, reduces the safety risk of maintenance, and ensures the stable operation of the waste heat boiler system and the waste heat power generation system.

[0036] The above are exemplary embodiments disclosed by the present application, but it should be noted that various changes and modifications can be made without departing from the scope of the embodiments disclosed by the present application defined by the claims. The functions, steps and / or actions of the method claims described herein need not be performed in any particular order. Unless explicitly stated, the ordinal use of terms such as "first", "second", etc. does not imply any particular order. The above described embodiments disclosed by the present application are merely exemplary, and the advantages of the embodiments disclosed by the present application are not limited to the above examples. In addition, although the elements of the embodiments disclosed by the present application can be described or claimed in individual form, they can also be understood as plural unless explicitly limited to singular.

[0037] It should be understood that, as used herein, the singular form "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes" and / or "including", as used herein, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0038] Those skilled in the art should understand that the above discussion of any embodiment is merely exemplary and is not intended to suggest that the scope of the embodiments disclosed by the present application (including the claims) is limited to these examples. In the spirit of the embodiments disclosed by the present application, the above embodiments or technical features in different embodiments can also be combined, and there are many other variations of the different aspects of the embodiments disclosed by the present application as described above. In order to be brief, they are not provided in detail. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principles of the embodiments disclosed by the present application shall be included in the scope of protection of the embodiments disclosed by the present application.

Claims

1. A method for troubleshooting and handling jammed rotary sealing valves, characterized in that, Applications in dry quenching and coke discharge devices include: In response to a jamming fault in the rotary sealing valve of the dry quenching and coke discharge device, the rotary sealing valve is switched to local operation mode, and jogging forward and reverse operation is performed to check whether the jamming foreign object is discharged. If the obstructing foreign object is not removed, the double-fork chute of the dry quenching and coke discharge device and the body of the rotary sealing valve are classified and investigated separately to find out the cause of the blockage of the double-fork chute or the cause of the obstruction of the body. The cause of the blockage is identified and the obstruction is removed, or the cause of the blockage in the main body is identified and the faulty accessory is removed, so as to restore the coke discharge operation of the dry quenching and coke discharge device.

2. The method for troubleshooting and handling rotary sealing valve jamming according to claim 1, characterized in that, The dry quenching and coke discharge device includes, in sequence, a dry quenching furnace, a flat gate, an electromagnetic vibrating feeder, an intermediate chute, the rotary sealing valve, the double-fork chute, and a conveyor belt.

3. The method for troubleshooting and handling rotary sealing valve jamming according to claim 1, characterized in that, Also includes: If the obstructing foreign object is expelled, restore the original control mode of the rotary sealing valve to resume the coke discharge operation of the dry quenching and coke discharge device.

4. The method for troubleshooting and handling rotary sealing valve jamming according to claim 2, characterized in that, The causes of blockage in the double-fork chute include two categories: blockage caused by the conveyor belt stopping operation and blockage caused by foreign objects getting stuck in the double-fork chute.

5. The method for troubleshooting and handling rotary sealing valve jamming according to claim 4, characterized in that, The process of identifying and removing obstructions based on the cause of the blockage includes: If the blockage is caused by the conveyor belt stopping, after investigating and eliminating the malfunction of the conveyor belt, restore power to the conveyor belt, or switch to the backup belt path and clear the double-fork chute.

6. The method for troubleshooting and handling rotary sealing valve jamming according to claim 5, characterized in that, The process of identifying and removing obstructions based on the cause of the blockage also includes: If the blockage is found to be caused by a foreign object stuck in the double-fork chute, remove the foreign object and clear the double-fork chute.

7. The method for troubleshooting and handling rotary sealing valve jamming according to claim 2, characterized in that, The causes of jamming in the rotary sealing valve body can be categorized into two types: jamming caused by foreign objects getting stuck in the blades inside the body, and jamming caused by damage or detachment of the sealing accessories inside the body.

8. The method for troubleshooting and handling rotary sealing valve jamming according to claim 7, characterized in that, The process of troubleshooting and removing faulty accessories based on the blockage of the main body includes: If the jamming is found to be caused by damage or detachment of the internal sealing accessory, open the manhole cover of the sealing cavity in the rotary sealing valve and remove the damaged sealing accessory.

9. The method for troubleshooting and handling rotary sealing valve jamming according to claim 8, characterized in that, The process of troubleshooting and removing faulty accessories based on the blockage of the main body also includes: If the obstruction is found to be caused by a foreign object stuck in the blade inside the body, open the manhole cover of the intermediate chute and remove the foreign object.

10. The method for troubleshooting and handling rotary sealing valve jamming according to claim 1, characterized in that, After the process of troubleshooting and removing the obstruction based on the cause of the blockage or removing the faulty accessory based on the cause of the blockage in the main body, it further includes: Manually rotate the rotary sealing valve to test its operation. Once it is confirmed that there is no obstruction, resume the coke discharge operation of the dry quenching and coke discharge device.

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