Novel single-hole pressure adjusting device for coke oven carbonization chamber

Abstract

A novel coke oven carbonization chamber single-hole pressure adjusting device comprises a bridge pipe body, the bridge pipe body is provided with an air inlet and an air outlet, the bridge pipe body is provided with a valve body used for adjusting flow, the valve body is communicated with the air inlet and the air outlet, a valve element matched with the valve body is installed in the valve body, and a valve seat matched with the valve element is installed in the valve body. The valve element is provided with a gas passing opening used for gas circulation, the valve body is provided with a driving mechanism driving the valve element to rotate, the driving mechanism drives the valve element to rotate to complete adjustment of the opening degree of the gas passing opening, and therefore adjustment of the flow is achieved. Under the condition of not changing the connection form and the installation size of the ascending pipe and the gas collecting chamber of the original coke oven, the ascending pipe and the gas collecting chamber are directly exchanged with the original bridge pipe, so that the transformation cost is greatly saved, meanwhile, the flue gas flow is more accurately controlled, and the condition of flue gas leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coking oven pressure regulating equipment, in particular to a novel single-hole pressure regulating device for a coking oven carbonization chamber. Background Art

[0002] A coke oven refers to a horizontal chamber coke oven whose main purpose is to produce metallurgical coke and can recover coking chemical products. It consists of a furnace body and ancillary equipment, and is generally composed of a carbonization chamber, a combustion chamber, a furnace top and a flue. It can be divided into a double-fire-channel type and a two-fire-channel type according to the different heating system structures. The coking states of each carbonization chamber of the coke oven are different. A large amount of raw coal gas is generated in the early stage of coal loading and coking, and a large amount of gas is introduced into the gas collecting pipe. If it cannot be discharged in time, a large amount of raw coal gas may escape, seriously affecting the operating environment of the coke oven, causing environmental pollution and waste of gas, and preventing the coal loading and dust removal system from operating normally. At present, the pressure regulating devices in the carbonization chambers of coke ovens in coking plants are all flap-type water seal valves with low adjustment accuracy and small adjustment range, which cannot meet actual production needs.

[0003] For example, the application number is CN202210671553.4, and the patent name is A coke oven bridge pipe with an automatically adjustable flap mechanism. It discloses that the coke oven bridge pipe includes: a tube body and a flap mechanism, and the flap mechanism includes a first flap and a second flap rotatably arranged in the tube body; the first flap is a structure with a middle opening, and the second flap matches the shape of the middle opening of the first flap, so that the second flap can seal or open the middle opening during the flipping process, and during the flipping of the first flap in the tube body, the outer peripheral edge of the first flap can be sealed and fitted with the inner wall of the tube body, and cooperate with the second flap in sealing the middle opening to cut off the tube body, and when the outer peripheral edge of the first flap is separated from the inner wall of the tube body, the tube body is conductive.

[0004] However, the above-mentioned existing improved regulating devices all need to change the layout of the on-site riser gas collecting chamber to increase space for the installation of the device. A single coke oven conventionally has more than 200 sets of bridge pipes, and the amount of change is extremely large, which not only increases the cost for the enterprise, but also prolongs the replacement time, thereby affecting the production efficiency of the enterprise. At the same time, it is impossible to achieve the purpose of linear regulation of the flue gas emission, and it is difficult to meet the use needs of the enterprise. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a new single-hole pressure regulating device for the carbonization chamber of a coke oven, which can be directly interchanged with the original bridge pipe without changing the connection form and installation dimensions of the original coke oven riser and the gas collecting chamber, thereby greatly saving the modification cost and having the function of linear airflow regulation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of single-hole pressure regulating device for a coke oven carbonization chamber, comprising a bridge pipe body, the bridge pipe body being provided with an air inlet and an air outlet, the bridge pipe body being provided with a valve body for adjusting the flow rate, and the valve body being connected with the air inlet and the air outlet, a valve core which cooperates with the valve body being installed inside the valve body, a valve seat which cooperates with the valve core being installed inside the valve body, an air passage for gas circulation being provided on the valve core, and a driving mechanism for driving the valve core to rotate being provided on the valve body, the valve core being driven to rotate by the driving mechanism to complete the adjustment of the opening size of the air passage, thereby realizing the adjustment of the flow rate.

[0007] As a preferred technical solution of the utility model, a high-pressure ammonia water inlet and an ammonia water circulation outlet are provided on the valve body.

[0008] The gas is sprayed to quickly reduce the temperature of the gas, and at the same time, some of its sulfides react chemically with ammonia water to remove the sulfide content in the gas.

[0009] As a preferred technical solution of the utility model, an overflow water seal structure is provided on the valve core.

[0010] As a preferred technical solution of the utility model, the overflow water seal structure includes an overflow pipe installed on the valve core and connected to the valve core, a water storage cover is installed on the top of the overflow pipe, and the lowest point of the water storage cover is lower than the highest point of the overflow pipe.

[0011] When the device is in use, ammonia water will flow out through the overflow pipe, but the gas below cannot enter the interior of the valve body through this position.

[0012] As a preferred technical solution of the utility model, the valve core adopts a hemispherical structure, and the air outlet and the overflow water seal structure are respectively located on both sides of the valve core.

[0013] As a preferred technical solution of the utility model, the air outlet is V-shaped, and the opening faces the side away from the overflow water seal.

[0014] The V-shaped gas port can make the regulation of gas flow close to linear, and can achieve percentage regulation, making the regulation more precise.

[0015] As a preferred technical solution of the utility model, at least one inspection port is provided on the valve body.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] Through the integrated design of valve body and bridge pipe, it can be directly interchanged with the original bridge pipe without changing the original connection form and installation size of the coke oven riser and gas collecting chamber, which greatly saves the transformation cost.

[0018] Through the special structure of the air port, the valve core rotates in contact with the valve seat. It has self-cleaning, simple structure, flow regulation characteristics of approximately equal percentage, sensitive adjustment, more precise adjustment function, easy operation, reduced failure rate and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the overall shaft side of the utility model.

[0020] Figure 2 It is a schematic structural diagram of the overall side of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the internal front side of the utility model.

[0022] Figure 4 It is a schematic diagram of the structure of the utility model as a whole when viewed from above.

[0023] Figure 5 It is a schematic diagram of the structure of the utility model when it is installed and used as a whole.

[0024] Figure 6 It is a schematic diagram of the structure of the axonometric valve core 7 of the utility model.

[0025] Figure 7 It is a structural schematic diagram of the front side of the valve core 7 of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7A novel single-hole pressure regulating device for a carbonization chamber of a coke oven comprises a bridge pipe body 1, on which a valve body 2 for regulating flow is arranged, and the valve body 2 is integrated with the bridge pipe, so that it can be directly interchanged with the original bridge pipe without changing the connection form and installation size of the original coke oven riser and gas collecting chamber, thereby greatly saving the transformation cost, and the bridge pipe body 1 is provided with an air inlet 10 and an air outlet 11, and the valve body 2 is connected with the air inlet 10 and the air outlet 11, when in use, the air inlet 10 is connected with the riser, and the air outlet 11 is connected with the gas collecting chamber, and the raw gas generated by the coke oven enters the valve body 2 through the air inlet 10, and a valve core 7 matching with the valve body 2 is installed inside the valve body 2, and the valve body 2 is provided with a valve core 7 matching with ... A valve seat 6 cooperating with a valve core 7 is installed inside the valve body 2. The valve core 7 is provided with a gas port 12 for gas circulation. The valve body 2 is provided with a driving mechanism 13 for driving the valve core 7 to rotate. The valve core 7 is driven by the driving mechanism 13 to rotate to complete the adjustment of the opening size of the gas port 12, thereby realizing the adjustment of the flow rate. When the amount of raw coal gas generated in the early stage of coal loading and the early stage of coking is large, the valve core 7 is rotated by rotating the driving mechanism 13, and the gas flow is controlled by the size of the opening of the gas hole on the valve core 7 to achieve the purpose of adjusting the carbonization chamber pressure. The adjustment is faster and more convenient. At least one inspection port 3 is provided on the valve body 2, and the inspection port 3 is convenient for workers to perform regular maintenance and overhaul of the interior of the valve body 2.

[0028] Other specific practicable solutions of the present invention can be found by observing the attached Figure 1-5 It can be seen that the valve body 2 is provided with a high-pressure ammonia water inlet 4 and an ammonia water circulation outlet 5, and the valve core 7 is provided with an overflow water seal structure, which includes an overflow pipe 8 installed on the valve core 7 and connected to the valve core 7, and a water storage cover 9 is installed on the top of the overflow pipe 8, and the lowest point of the water storage cover 9 is lower than the highest point of the overflow pipe 8. The gas just discharged from the coke oven has a high temperature and contains more sulfides. Therefore, the ammonia water circulation outlet 5 is installed on the valve body 2 to spray the gas, quickly reduce the temperature of the gas, and at the same time make some of the sulfides react chemically with the ammonia water to remove the sulfur in the gas. The content of compounds in the ammonia water needs to be recovered and reused after spraying. The ammonia water will gather at the valve core 7 at the bottom of the valve body 2. At this time, the ammonia water will flow out through the overflow pipe 8 through the overflow water seal structure, but the gas below cannot enter the interior of the valve body 2 through this position, thereby realizing the sealing of the gas and being able to recycle the ammonia water. When loading coal, the gas collecting chamber is under positive pressure, but there is no pressure in the carbonization chamber of the coal. In order to avoid pressure reverse thrust, high-pressure ammonia water is introduced through the high-pressure ammonia water inlet 4 to form a negative pressure inside the valve body, thereby avoiding the backflow of gas.

[0029] Other specific practicable solutions of the present invention can be found by observing the attached Figure 6-7It can be seen that the valve core 7 adopts a hemispherical structure, and the air port 12 and the overflow water seal structure are respectively located on both sides of the valve core 7. The overflow water seal structure of the present device is different from that on the market in that it is placed in the middle of the valve core 7. Since the air port 12 of the present device is V-shaped and the opening is facing the side away from the overflow water seal, the V-shaped air port 12 can make its regulation of the gas flow rate close to linear, and can be adjusted in a percentage manner, making the regulation more precise and more controllable, and the overflow water seal structure biased to one side can still be sealed after the air port 12 is partially opened, so as to ensure the sealing of the valve body 2 while regulating the gas flow rate, further improve the control accuracy of the gas flow rate, and avoid the risk of gas leakage in the gas collecting chamber due to uncontrollable gas flow rate. The drive mechanism 13 adopts a hydraulic drive structure or a mechanical drive structure, and the drive mode can be replaced and adjusted according to actual use, and is automatically controlled by an embedded program, so that the purpose of autonomous regulation of the internal air pressure of the coke oven can be achieved.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel single-hole pressure regulating device for a coke oven carbonization chamber, comprising a bridge pipe body (1), It is characterized by: The bridge pipe body (1) is provided with an air inlet (10) and an air outlet (11), and the bridge pipe body (1) is provided with a valve body (2) for adjusting flow, and the valve body (2) is in communication with the air inlet (10) and the air outlet (11); A valve core (7) matching with the valve body (2) is installed inside the valve body (2), and a valve seat (6) matching with the valve core (7) is installed inside the valve body (2); The valve core (7) is provided with a gas passage (12) for gas circulation; The valve body (2) is provided with a driving mechanism (13) for driving the valve core (7) to rotate. The driving mechanism (13) drives the valve core (7) to rotate to adjust the opening size of the air port (12), thereby achieving adjustment of the flow rate.

2. A novel single-hole pressure regulating device for a coke oven carbonization chamber according to claim 1, characterized in that: The valve body (2) is provided with a high-pressure ammonia water inlet (4) and an ammonia water circulation outlet (5).

3. A novel single-hole pressure regulating device for a coke oven carbonization chamber according to claim 1, characterized in that: An overflow water seal structure is provided on the valve core (7).

4. A novel single-hole pressure regulating device for a coke oven carbonization chamber according to claim 3, characterized in that: The overflow water seal structure comprises an overflow pipe (8) mounted on the valve core (7) and connected to the valve core (7), a water storage cover (9) being mounted on the top of the overflow pipe (8), the lowest point of the water storage cover (9) being lower than the highest point of the overflow pipe (8).

5. The novel single-hole pressure regulating device for the carbonization chamber of a coke oven according to claim 3 is characterized in that: The valve core (7) adopts a hemispherical structure, and the air outlet (12) and the overflow water seal structure are respectively located on both sides of the valve core (7).

6. A novel single-hole pressure regulating device for a coke oven carbonization chamber according to claim 5, characterized in that: The air outlet (12) is V-shaped, and its opening faces the side away from the overflow water seal.

7. The novel single-hole pressure regulating device for the carbonization chamber of a coke oven according to claim 1 is characterized in that: At least one inspection port (3) is provided on the valve body (2).

8. The novel single-hole pressure regulating device for the carbonization chamber of a coke oven according to claim 1 is characterized in that: The driving mechanism (13) adopts a hydraulic driving structure or a mechanical driving structure.

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