Automatic adjusting system and method for transverse pipe in coke oven basement heating system

Abstract

The invention discloses an automatic adjusting system and method for a transverse pipe in a coke oven basement heating system. The automatic adjusting system comprises the transverse pipe used for introducing coke oven gas, the transverse pipe is connected with a plurality of small branch pipes, and the lower portions of the small branch pipes are communicated with a lower spray pipe automatic opening and closing valve, a pipe plug and the transverse pipe; the side face of the small branch pipe is connected with a guide pipe, the guide pipe is correspondingly provided with an electric pressure gauge and an electromagnetic valve, the other end of the guide pipe is connected with a main pipe, the main pipe is provided with an electric pressure gauge and connected with corresponding branch pipes according to different input medium types, and the branch pipes are provided with electromagnetic valves. The electromagnetic valves are connected with a digital controller through signal lines, the digital controller is in two-way communication connection with a DCS, the DCS is controlled by a central control room, and the central control room is further electrically connected with the corresponding electric pressure gauges and used for monitoring the pressure in the guide pipe and the main pipe. According to the invention, the lower opening and closing valve of the small branch pipe at the end edge in the transverse pipe can be integrally, quickly, safely and accurately opened, corrosive liquid is discharged in time, and the service life of the transverse pipe of coke oven heating equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of coke oven heating equipment, in particular to an automatic adjustment system and method for a transverse pipe in a coke oven basement heating system. Background Art

[0002] The coke oven horizontal pipe is a type of gas pipe system belonging to the coke oven heating equipment. The coke oven gas from the main pipe is introduced into a main pipe in the basement and then distributed to each vertical fire channel through branch pipes, horizontal pipes, and small branches. It is a type of layout for spraying from the coke oven. Coke ovens are generally divided into single-heating type and reheating type. The reheating type coke oven uses two types of gas (blast furnace gas and coke oven gas) for heating, so it is equipped with two sets of heating gas systems. The single-heating type coke oven is only equipped with one set of heating equipment. The reheating coke oven has two sets of heating equipment. The blast furnace gas system is used for heating, and the coke oven gas system equipment is shut down. A small part of the exhaust gas generated by the blast furnace gas heating flows with the descending airflow through the brick coal channel to the small branch pipe, cross pipe, and branch pipe, and most of it stays in the cross pipe. The exhaust gas generated by the blast furnace gas heating is highly corrosive, because the blast furnace gas contains acidic substances such as hydrogen sulfide, hydrogen chloride, sulfur trioxide and sulfur dioxide, which produce acidic gases after combustion. As it descends into the cross pipe, condensed acid water is produced at low temperature. These acidic liquids still remain in the cross pipe, causing long-term corrosion to the cross pipe pipeline, making it difficult to use the cross pipe again, or even making it unusable. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic adjustment system and method for transverse pipes in a coke oven basement heating system, which is used to reduce the corrosion of the inner wall of the transverse pipes in the coke oven gas heating system, reduce the frequency of operations where personnel are subjected to heavy labor and are exposed to dangerous environments, ensure the normal use of the coke oven gas transverse pipes, extend the service life of the transverse pipes of the coke oven heating equipment, and solve the problems raised by the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The invention discloses an automatic regulating system for a transverse pipe in a coke oven basement heating system, comprising a transverse pipe for passing coke oven gas, a plurality of small branch pipes being connected to the transverse pipe, the upper part of the small branch pipes being used to connect to a brick gas channel and directly to the bottom of a combustion chamber, and the lower part of the small branch pipes being connected to an automatic opening and closing valve of a lower nozzle, a pipe plug and a transverse pipe; a conduit being connected to the side of the small branch pipe and being close to the lower side of the pipe plug, an electric pressure gauge and an electromagnetic valve being correspondingly installed on the conduit, the other end of the conduit being connected to a main pipe for providing medium input, an electric pressure gauge being installed on the main pipe, the main pipe being connected to corresponding branch pipes according to different types of input medium, and corresponding electromagnetic valves being installed on the branch pipes; the electromagnetic valve establishing a communication connection with a digital controller via a signal line, the digital controller establishing a two-way communication connection with a DCS system, the DCS system being controlled by a central control room, and the central control room being also electrically connected to a corresponding electric pressure gauge for monitoring the pressure in the conduit and the main pipe.

[0006] Furthermore, the pipe plug controls the flow rate of the airflow entering the cross pipe to the small branch pipe by changing the size of the nozzle aperture inside.

[0007] Furthermore, the automatic opening and closing valve of the lower nozzle is a circular spring clamp valve made of a spring, with a diameter ≥50mm and a set pressure of 500Pa. It can automatically open when the medium pressure in the horizontal pipe is greater than 500Pa, and automatically close when it is less than 500Pa.

[0008] Furthermore, there are a number of the transverse tubes, each of which is connected to a corresponding conduit, and each conduit is installed with an electric pressure gauge and a solenoid valve.

[0009] The present invention provides another technical solution: an automatic adjustment method for a transverse pipe in a coke oven basement heating system, wherein a coke oven has a number of transverse rows, and a coke oven transverse row number corresponds to two transverse pipes, and is correspondingly provided with a conduit A, a conduit B, a lower nozzle automatic opening and closing valve A, a lower nozzle automatic opening and closing valve B, a lower nozzle automatic opening and closing valve C, a lower nozzle automatic opening and closing valve D, an electric pressure gauge A, an electric pressure gauge B, an electric pressure gauge C, an electromagnetic valve A, an electromagnetic valve B, an electromagnetic valve C, and an electromagnetic valve D; the specific adjustment method is as follows:

[0010] S1: The type of medium input into the main pipe can be freely switched through solenoid valve C and solenoid valve D;

[0011] S2: The digital controller inputs the setting program to the DCS system, and then the DCS system feeds back the digital controller. The digital controller feeds back the solenoid valve A and solenoid valve B to execute the task through the output module.

[0012] Furthermore, the digital controller program setting is set according to the coke oven exchange time, as follows:

[0013] If the airflow in the upper part of the brick gas channel corresponding to the automatic opening and closing valve A and the automatic opening and closing valve C of the lower nozzle pipe is a descending airflow, the solenoid valve A opens, and the electric pressure gauge B displays a pressure between 500Pa-1500Pa, and the automatic opening and closing valve A and the automatic opening and closing valve C of the lower nozzle pipe open at the same time;

[0014] If the adjacent lower nozzle automatic opening and closing valve B and lower nozzle automatic opening and closing valve D correspond to the rising airflow, the solenoid valve B is closed, and the lower nozzle automatic opening and closing valve B and the lower nozzle automatic opening and closing valve D are closed at the same time.

[0015] Further, after the reversal, the solenoid valve A is closed, and the lower nozzle automatic opening and closing valve A and the lower nozzle automatic opening and closing valve C are closed, the solenoid valve B is opened, and the electric pressure gauge A shows a pressure of 500Pa-1500Pa, and the lower nozzle automatic opening and closing valve B and the lower nozzle automatic opening and closing valve D are opened.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The automatic adjustment system and method of the transverse pipe in the coke oven basement heating system of the present invention can discharge the corrosive liquid in the transverse pipe in time and extend the service life of the transverse pipe.

[0018] 2. The automatic adjustment system and method of the transverse pipe in the coke oven basement heating system of the present invention can well protect the transverse pipe, provide a guarantee for the switching of the reheating coke oven to coke oven gas heating, reduce the labor intensity of the operators, and reduce the frequency of a large number of heavy and dangerous operations.

[0019] 3. The automatic adjustment system and method of the transverse pipe in the coke oven basement heating system of the present invention are scientifically and reasonably designed, fully automated, do not require manual work, have low cost of use, are extremely practical, and have great promotion value in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a system structure diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the closed state of the automatic opening and closing valve of the lower nozzle of the present invention;

[0022] Figure 3 It is a schematic diagram of the open state of the automatic opening and closing valve of the lower nozzle of the present invention;

[0023] Figure 4 This is the electrical control principle diagram of the system of the present invention.

[0024] In the figure: 1. horizontal pipe; 2. pipe plug; 3. small branch pipe; 401. automatic opening and closing valve A for lower nozzle; 402. automatic opening and closing valve B for lower nozzle; 403. automatic opening and closing valve C for lower nozzle; 404. automatic opening and closing valve D for lower nozzle; 5. conduit A; 501. electric pressure gauge A; 502. electric pressure gauge B; 503. electric pressure gauge C; 6. solenoid valve A; 7. conduit B; 8. solenoid valve B; 9. main pipe; 10. solenoid valve C; 11. solenoid valve D; 12. central control room; 13. DCS system; 14. digital controller; 15. output module; 16. sub-management. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-4 In an embodiment of the present invention, an automatic regulating system for a transverse pipe in a coke oven basement heating system is provided, comprising a transverse pipe 1 for passing coke oven gas, a plurality of small branch pipes 3 being connected to the transverse pipe 1, the upper portion of the small branch pipes 3 being used to connect to a brick gas passage and directly to the bottom of a combustion chamber, the lower portion of the small branch pipes 3 being connected to an automatic opening and closing valve for a lower nozzle, a pipe plug 2 and the transverse pipe 1, wherein the automatic opening and closing valve for the lower nozzle is a circular spring clamp valve made of a spring, with a diameter of ≥50 mm and a set pressure of 500 Pa, which can be automatically opened when the medium pressure in the transverse pipe 1 is greater than 500 Pa, and automatically closed when it is less than 500 Pa; the pipe plug 2 controls the airflow rate entering the transverse pipe 1 to the small branch pipe by changing the size of the nozzle aperture therein. 3; wherein, a conduit is connected to the side of the small branch pipe 3 and is close to the lower side of the pipe plug 2, an electric pressure gauge and a solenoid valve are correspondingly installed on the conduit, and the other end of the conduit is connected to a main pipe 9 for providing medium input, an electric pressure gauge is installed on the main pipe 9, and the main pipe 9 is connected to a corresponding branch pipe 16 according to different input medium types (nitrogen or air), and a corresponding solenoid valve is installed on the branch pipe 16; the solenoid valve establishes a communication connection with the digital controller 14 through a signal line, and the digital controller 14 establishes a two-way communication connection with the DCS system 13, the DCS system 13 is controlled by the central control room 12, and the central control room 12 is also electrically connected to the corresponding electric pressure gauge for monitoring the pressure in the conduit and the main pipe 9.

[0027] The number of transverse pipes 1 in the present invention is set to be several, and each transverse pipe 1 is connected to a corresponding conduit, and each conduit is installed with an electric pressure gauge and a solenoid valve. Among them, one coke oven row number corresponds to two transverse pipes 1, and one coke oven has several transverse rows. The specific embodiment of the present invention stipulates that there are two transverse pipes 1 according to the design quantity of the coke oven model, and is correspondingly provided with a conduit A5, a conduit B7, a lower nozzle automatic opening and closing valve A401, a lower nozzle automatic opening and closing valve B402, a lower nozzle automatic opening and closing valve C403, a lower nozzle automatic opening and closing valve D404, an electric pressure gauge A501, an electric pressure gauge B502, an electric pressure gauge C503, a solenoid valve A6, a solenoid valve B8, a solenoid valve C10, and a solenoid valve D11; Figure 1 As shown:

[0028] The given range of conduit pressure is (500~1500)Pa. The upper part of the small branch pipe 3 leads to the brick gas channel, and the lower part leads to the automatic opening and closing valve A401 of the lower nozzle. The side is connected to the pipe plug 2 and the horizontal pipe 1. The automatic opening and closing valve A401 of the lower nozzle and the automatic opening and closing valve C403 of the lower nozzle are automatic opening and closing valves under the small branch pipe 3 at both ends of the horizontal pipe 1. They are similar to spring clamp valves. When the medium pressure in the horizontal pipe 1 is greater than 500Pa, they can be automatically opened, and when it is less than 500Pa, they can be automatically closed. Similarly, the automatic opening and closing valve B402 of the lower nozzle and the automatic opening and closing valve D404 of the lower nozzle are automatic opening and closing valves at both ends of another adjacent horizontal pipe 1. Conduit A5 and conduit B7 are made of metal stainless steel conduits, connected to the upper side of the automatic opening and closing valve A401 of the lower nozzle and the automatic opening and closing valve B402 of the lower nozzle, close to the lower side of the pipe plug 2, and aligned with the nozzle mouth. Check whether it is correct from the pipe plug 2 mouth. The diameter of conduit A5 and conduit B7 is 20mm, and the medium introduced is mainly air or nitrogen. The pressure in the corresponding conduit A5 and conduit B7 is controlled by solenoid valve A6 and solenoid valve B8. At the same time, the electric pressure gauge B502 and electric pressure gauge A501 installed on conduit A5 and conduit B7 monitor the medium pressure in the conduit. The main pipe 9 is a metal stainless pipe with a diameter of 50mm. The internal pressure is monitored by an electric pressure gauge C503. The solenoid valve D11 is a bypass valve installed on the branch pipe 16. The solenoid valve C10 is installed on the main pipe 9. The solenoid valve C10 and the solenoid valve D11 can switch the medium in the pipe freely, transport the main pipe 9, and distribute it to each branch pipe. Among them, the digital controller 14 is input with the setting program to the DCS system 13, and then the DCS system 13 feeds back the digital controller 14. The digital controller 14 feeds back the execution of tasks of each solenoid valve through the output module 15.

[0029] In order to further better explain the embodiment of the present invention, a method for automatically adjusting a horizontal pipe in a coke oven basement heating system is also provided, comprising the following steps:

[0030] S1: The type of medium input into the main pipe 9 is freely switched through the solenoid valve C10 and the solenoid valve D11;

[0031] S2: The digital controller 14 inputs the setting program to the DCS system 13, and then the DCS system 13 feeds back the digital controller 14. The digital controller 14 feeds back the solenoid valve A6 and the solenoid valve B8 to execute the task through the output module 15.

[0032] The program setting of the digital controller 14 is set according to the coke oven exchange time, as follows:

[0033] If the airflow in the upper part of the brick gas channel corresponding to the lower nozzle automatic opening and closing valve A401 and the lower nozzle automatic opening and closing valve C403 is a descending airflow, the solenoid valve A6 opens, and the electric pressure gauge B502 displays a pressure between 500Pa-1500Pa, and the lower nozzle automatic opening and closing valve A401 and the lower nozzle automatic opening and closing valve C403 open accordingly;

[0034] If the adjacent lower nozzle automatic opening and closing valve B402 and lower nozzle automatic opening and closing valve D404 correspond to the rising airflow, the solenoid valve B8 is closed, and the lower nozzle automatic opening and closing valve B402 and lower nozzle automatic opening and closing valve D404 are closed simultaneously.

[0035] In the above adjustment method, after the reversal, the solenoid valve A6 is closed, and the lower nozzle automatic opening and closing valve A401 and the lower nozzle automatic opening and closing valve C403 are closed accordingly, the solenoid valve B8 is opened, and the electric pressure gauge A501 displays a pressure of 500Pa-1500Pa, and the lower nozzle automatic opening and closing valve B402 and the lower nozzle automatic opening and closing valve D404 are opened accordingly.

[0036] In summary: the present invention provides an automatic adjustment system and method for a transverse pipe in a coke oven basement heating system, wherein a spring clamp automatic opening and closing valve is arranged at the lower part of the small branch pipe 3, so as to discharge the corrosive liquid in the transverse pipe 1 in time, and secondly, a conduit is opened on the upper outer side of the automatic opening and closing valve, close to the pipe plug 2, so that the automatic opening and closing valve is opened by the medium pressure, and when the medium is closed, the automatic opening and closing valve is closed accordingly, and the design of the solenoid valve can be changed at any time according to the coke oven exchange time design, and the medium in the main pipe 9 can be freely switched and used as needed, and the whole process is fully automated, without manual operation, with low cost of use and extremely high practicality, which prolongs the service life of the transverse pipe of the coke oven heating system, reduces a large amount of heavy and dangerous thermal operations, reduces the equipment and labor costs of the enterprise, and has promotion value.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic adjustment system for horizontal pipes in a coke oven basement heating system, characterized in that: The invention comprises a horizontal pipe (1) for passing coke oven gas, a plurality of small branch pipes (3) are connected to the horizontal pipe (1), the upper part of the small branch pipe (3) is used to connect to the brick gas channel and directly connect to the bottom of the combustion chamber, and the lower part of the small branch pipe (3) is connected to the automatic opening and closing valve of the lower nozzle, the pipe plug (2) and the horizontal pipe (1); the side of the small branch pipe (3) is connected to a conduit and is close to the lower side of the pipe plug (2), and an electric pressure gauge and a solenoid valve are installed on the conduit accordingly, and the other end of the conduit is connected to a main pipe (9) for providing medium input, and the main pipe (9 ) is installed with an electric pressure gauge, the main pipe (9) is connected with a corresponding branch pipe (16) according to different types of input media, and a corresponding solenoid valve is installed on the branch pipe (16); the solenoid valve establishes a communication connection with the digital controller (14) through a signal line, and the digital controller (14) establishes a two-way communication connection with the DCS system (13). The DCS system (13) is controlled by the central control room (12), and the central control room (12) is also electrically connected with the corresponding electric pressure gauge for monitoring the pressure in the conduit and the main pipe (9).

2. The automatic adjustment system for the horizontal pipe in the coke oven basement heating system according to claim 1, characterized in that: The pipe plug (2) controls the flow rate of the airflow entering the horizontal pipe (1) to the small branch pipe (3) by changing the size of the nozzle aperture inside.

3. The automatic adjustment system for the horizontal pipe in the coke oven basement heating system according to claim 1, characterized in that: The lower nozzle automatic opening and closing valve is a circular spring clamp valve made of a spring, with a diameter of ≥50mm and a set pressure of 500Pa. It can automatically open when the medium pressure in the horizontal pipe (1) is greater than 500Pa, and automatically close when it is less than 500Pa.

4. The automatic adjustment system for the horizontal pipe in the coke oven basement heating system according to claim 1, characterized in that: The number of the transverse pipes (1) is set to be several, each transverse pipe (1) is connected to a corresponding conduit, and each conduit is installed with an electric pressure gauge and a solenoid valve.

5. An automatic adjustment method for a transverse pipe in a coke oven basement heating system, implemented based on the automatic adjustment system for a transverse pipe in a coke oven basement heating system according to claim 4, characterized in that: A coke oven row number corresponds to two horizontal pipes (1), and is provided with a guide tube A (5), a guide tube B (7), a lower nozzle automatic opening and closing valve A (401), a lower nozzle automatic opening and closing valve B (402), a lower nozzle automatic opening and closing valve C (403), a lower nozzle automatic opening and closing valve D (404), an electric pressure gauge A (501), an electric pressure gauge B (502), an electric pressure gauge C (503), an electromagnetic valve A (6), an electromagnetic valve B (8), an electromagnetic valve C (10), and an electromagnetic valve D (11) respectively; the specific adjustment method is as follows: S1: The type of medium input into the main pipe (9) is freely switched through the solenoid valve C (10) and the solenoid valve D (11); S2: The digital controller (14) inputs the setting program to the DCS system (13), and the DCS system (13) then feeds back the digital controller (14). The digital controller (14) feeds back the solenoid valve A (6) and the solenoid valve B (8) to execute the task through the output module (15).

6. The automatic adjustment method for the horizontal pipe in the coke oven basement heating system according to claim 5, characterized in that: The program setting of the digital controller (14) is set according to the coke oven exchange time, as follows: If the airflow in the upper part of the brick gas channel corresponding to the lower nozzle automatic opening and closing valve A (401) and the lower nozzle automatic opening and closing valve C (403) is a descending airflow, the solenoid valve A (6) is opened, and the electric pressure gauge B (502) displays a pressure between 500Pa and 1500Pa, and the lower nozzle automatic opening and closing valve A (401) and the lower nozzle automatic opening and closing valve C (403) are opened at the same time; If the adjacent lower nozzle automatic opening and closing valve B (402) and lower nozzle automatic opening and closing valve D (404) correspond to the rising airflow, the solenoid valve B (8) is closed, and the lower nozzle automatic opening and closing valve B (402) and the lower nozzle automatic opening and closing valve D (404) are closed at the same time.

7. The automatic adjustment method for the horizontal pipe in the coke oven basement heating system according to claim 6, characterized in that: After the reversal, the solenoid valve A (6) is closed, and at the same time, the lower nozzle automatic opening and closing valve A (401) and the lower nozzle automatic opening and closing valve C (403) are closed, the solenoid valve B (8) is opened, and the electric pressure gauge A (501) displays a pressure of 500Pa-1500Pa, and at the same time, the lower nozzle automatic opening and closing valve B (402) and the lower nozzle automatic opening and closing valve D (404) are opened.

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