Pressure adjusting device for coke oven carbonization chamber

Abstract

The utility model provides a coke oven carbonization chamber pressure adjusting device which is detachably connected between a bridge pipe and a gas collecting pipe and comprises a sleeve, the lower end of the bridge pipe extends into the sleeve from the top of the sleeve, and the lower end of the sleeve is communicated with the upper end of the gas collecting pipe; a water seal tank is arranged in the sleeve, an opening is formed in the upper end of the sleeve, and a water quantity control mechanism is arranged outside the sleeve, is communicated with the water seal tank and can control the water quantity in the water seal tank; the lower end of the bridge pipe extends into the water seal tank, preset distances are reserved between the lower end and the side wall of the bridge pipe and the bottom wall and the side wall of the water seal tank, and preset distances are reserved between the top end, the bottom end and the side wall of the water seal tank and the sleeve. The device is simple in structure and free of any moving part, so that the failure rate is low, and the maintenance and repair cost is reduced. Besides, the gas circulation amount is adjusted by controlling the lifting of the water surface in the water seal tank, so that the pressure in the carbonization chamber is adjusted, the operation is simple, the adjustment is flexible, the precision is high, and the adjustment effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven carbonization chamber control, in particular to a coke oven carbonization chamber pressure regulating device. Background Art

[0002] A coke oven is a furnace used to carbonize coal to produce coke. It is mainly composed of several parts such as the furnace top, combustion chamber and carbonization chamber, chute area, and heat storage chamber.

[0003] At present, during the initial stage of coal loading and coking, the pressure in the carbonization chamber of the coke oven is relatively high, and the amount of raw coal gas generated is relatively large, causing raw coal gas to escape from the furnace door, furnace body, furnace mouth and other places of the coke oven, causing atmospheric environmental pollution; at the end of coking, the amount of raw coal gas generated is small, and the carbonization chamber is prone to form negative pressure, inhaling air, causing abnormal operation of the coke oven. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a pressure regulating device for a coke oven carbonization chamber.

[0005] The technical solution of this utility model is as follows:

[0006] A coke oven carbonization chamber pressure regulating device is detachably connected between a bridge pipe and a gas collecting pipe, comprising a sleeve, the lower end of the bridge pipe extends into the sleeve from the top of the sleeve, and the lower end of the sleeve is connected to the upper end of the gas collecting pipe;

[0007] A water seal groove is provided inside the casing, with an opening at the upper end, and a water volume control structure is provided outside the casing, which is communicated with the water seal groove and can control the water volume in the water seal groove;

[0008] The lower end of the bridge pipe extends into the water seal groove, and a preset distance is left between its lower end and side wall and the bottom wall and side wall of the water seal groove. A preset distance is left between the top, bottom and side wall of the water seal groove and the casing.

[0009] The water volume in the water seal tank is controlled by the water volume control structure, and the distance between the water surface in the water seal tank and the lower port of the bridge pipe is adjusted, thereby controlling the size of the gas flow channel to adjust the pressure in the carbonization chamber. The structure is simple, easy to use and flexible to adjust.

[0010] In the above solution, the water volume control structure is connected to the bottom of the water seal tank through a pipeline.

[0011] Furthermore, the water volume control structure is a water tank, the bottom of which is connected to the bottom of the water seal tank through a pipe, and a drain valve is provided at the bottom. The water volume control structure and the water seal tank form a U-shaped pipe structure, and the water level in the water seal tank can be known by the water level in the water volume control structure, so that the water level in the water seal tank can be accurately controlled by the water volume control structure to adjust the pressure in the carbonization chamber.

[0012] Preferably, the top of the water volume control structure is higher than the top of the water seal groove.

[0013] In order to facilitate observation of the water level in the water volume control structure, the water volume control structure is designed as a transparent tube.

[0014] In order to facilitate the acquisition of the pressure in the carbonization chamber, a pressure scale is provided on the outer wall of the water volume control structure to record the pressure values ​​in the carbonization chamber after adjustment corresponding to different water surface heights, so as to facilitate the pressure adjustment in the carbonization chamber.

[0015] In the present application, the cross-sections of the lower end port of the bridge pipe, the water seal groove and the casing are all circular, and the vertical axes are collinear.

[0016] In order to ensure that the water seal groove has sufficient adjustment space, the distance between the lower end of the bridge pipe and the bottom of the water seal groove is greater than or equal to the radius of the lower end port of the bridge pipe, so that the water level in the water seal groove can drop to allow the gas in the bridge pipe to flow out normally, or rise to reduce the outflow of gas from the air pipe until the water surface overflows the lower end port of the bridge pipe and seals the bridge pipe.

[0017] In the present application, the water seal groove is located at the center of the casing.

[0018] In order to prevent water from overflowing from the water seal groove, an anti-overflow groove is provided on the outside of the water seal groove. The anti-overflow groove is fixedly connected to the water seal groove and a water storage space is provided between them. The top of the anti-overflow groove is higher than the top of the water seal groove. A drain outlet is provided on the side wall of the sleeve. The lower part of the anti-overflow groove is connected to the drain outlet, and a transparent cover is provided at the drain outlet.

[0019] The utility model provides a coke oven carbonization chamber pressure regulating device, which has a simple structure and does not have any moving parts, so that the failure rate is low and the maintenance and repair costs are reduced.

[0020] In addition, the gas flow rate is adjusted by controlling the rise and fall of the water level in the water seal tank, thereby adjusting the pressure in the carbonization chamber. The operation is simple, the adjustment is flexible, the accuracy is high, and the adjustment effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the attached picture:

[0022] Figure 1 is a cross-sectional schematic diagram of a pressure regulating device;

[0023] Figure 2 A schematic diagram of a pressure regulating device in use.

[0024] The components represented by the reference numerals in the figure are:

[0025] 1. Casing; 2. Bridge pipe; 3. Gas collecting pipe; 4. Water seal groove; 5. Water volume control structure; 6. Anti-overflow groove. DETAILED DESCRIPTION

[0026] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a coke oven carbonization chamber pressure regulating device, which is detachably connected between the bridge pipe 2 and the gas collecting pipe 3, and includes a sleeve 1. The lower end of the bridge pipe 2 extends into the sleeve 1 from the top of the sleeve 1, and the lower end of the sleeve 1 is connected to the upper end of the gas collecting pipe 3.

[0027] A water seal groove 4 is provided inside the casing 1, with an open upper end, in which water can be stored. A water volume control structure 5 is provided outside the casing 1, which is connected to the water seal groove 4 and can control the water volume in the water seal groove 4 by injecting or draining water.

[0028] The lower end of the bridge pipe 2 extends into the water seal groove 4, and a preset distance is left between its lower end and side wall and the bottom wall and side wall of the water seal groove 4. A preset distance is left between the top, bottom and side wall of the water seal groove 4 and the sleeve 1.

[0029] When the water level in the water seal groove 4 rises, the distance between it and the lower end of the bridge pipe 2 gradually decreases, and the gas flow cross section gradually decreases, and the gas flow resistance gradually increases, and the air flow volume gradually decreases, until the water surface overflows the lower end of the bridge pipe 2, sealing the lower end of the bridge pipe 2 and blocking the flow of raw gas. On the contrary, when the water level in the water seal groove 4 drops, the distance between it and the lower end of the bridge pipe 2 gradually increases, and the gas flow cross section gradually increases, and the air flow volume gradually increases, until the raw gas flows at the maximum flow rate.

[0030] This embodiment controls the water volume in the water seal groove 4 through the water volume control structure 5, adjusts the distance between the water surface in the water seal groove 4 and the lower end of the bridge pipe 2, and further controls the size of the gas flow channel to adjust the pressure in the carbonization chamber. It has a simple structure, is easy to use, and is flexible to adjust.

[0031] In some other embodiments, the water volume control structure 5 may be a water pump, which can inject water into the water seal groove 4 or drain the water in the water seal groove 4 through the forward and reverse rotation of the water pump.

[0032] In this embodiment, the water volume control structure 5 is a water tank, the bottom of which is connected to the bottom of the water seal tank 4 through a pipe, and a drain valve is provided at the bottom. The water volume control structure 5 and the water seal tank 4 form a U-shaped pipe structure, and the height of the water level in the water seal tank 4 can be increased by injecting water into the water tank, and the water in the water tank can be discharged through the drain valve to reduce the height of the water level in the water seal tank 4.

[0033] The water volume control structure 5 and the water seal groove 4 of this embodiment are composed of a structure in which the water level in the water seal groove 4 in the casing 1 can be known by the water level in the water volume control structure 5, thereby facilitating the accurate control of the water level in the water seal groove 4 by the water volume control structure 5 to adjust the pressure in the carbonization chamber.

[0034] Preferably, the top of the water volume control structure 5 is higher than the top of the water seal groove 4 .

[0035] In order to facilitate observation of the water level in the water volume control structure 5, the water volume control structure 5 is designed to be made of a transparent material. In addition, the water volume control structure 5 of this embodiment is preferably a tubular structure.

[0036] In order to facilitate the acquisition of the pressure in the carbonization chamber, a pressure scale (not shown in the figure) is provided on the outer wall of the water volume control structure 5 to record the pressure values ​​in the carbonization chamber after adjustment corresponding to different water surface heights, so as to facilitate the pressure adjustment in the carbonization chamber.

[0037] Through preliminary experiments, for example, by loading equal amounts of coal into the carbonization chamber, during the coal coking process, the water level heights of the water seal groove 4 corresponding to the pressure balance in the carbonization chamber at different stages are obtained, and then the scale is marked on the water volume control structure 5. When the coke oven forms standardized operation, the pressure in the carbonization chamber can be accurately adjusted even without the aid of a detector.

[0038] In this embodiment, the cross-sections of the lower end port of the bridge pipe 2 , the water seal groove 4 and the casing 1 are all circular, the vertical axes of the three are collinear, and the water seal groove 4 is located at the center of the casing 1 .

[0039] In order to allow the water seal groove 4 to have sufficient adjustment space, the distance between the lower end of the bridge pipe 2 and the bottom of the water seal groove 4 is set to be greater than or equal to the radius of the lower end port of the bridge pipe 2, so that the water level in the water seal groove 4 can drop to allow the gas in the bridge pipe 2 to flow out normally, or rise to reduce the outflow of gas from the air pipe until the water level overflows the lower end of the bridge pipe 2 and seals the bridge pipe 2.

[0040] Correspondingly, the flow cross-section formed between the inner side of the water seal groove 4 and the lower end of the bridge pipe 2 and between the outer side and the inner side of the sleeve 1 is larger than the maximum gas flow capacity of the cross-section of the bridge pipe 2 .

[0041] In order to prevent the water in the water seal groove 4 from overflowing, an anti-overflow groove 6 is sleeved on the outside of the water seal groove 4, which is sleeved on the bottom and side of the water seal groove 4, and its top is higher than the top of the water seal groove 4. The anti-overflow groove 6 is fixedly connected to the water seal groove 4 and a water storage space is provided between them. A drain port is provided on the side wall of the sleeve 1. The lower part of the anti-overflow groove 6 is connected to the drain port so that the water in the water storage space can be discharged from the sleeve 1. A transparent cover plate is provided at the drain port to block the drain port.

[0042] In normal use, there is no water in the overflow tank 6. When the water in the water seal tank 4 is too full, water enters the overflow tank 6 and avoids entering the gas collecting pipe 3. Check whether there is water in the overflow tank 6 through the transparent cover plate, and drain the water by opening the cover plate. In normal use, the cover plate is closed to prevent the raw gas from escaping from the drain outlet through the overflow tank 6.

[0043] The utility model provides a coke oven carbonization chamber pressure regulating device, which has a simple structure and does not have any moving parts, so that the failure rate is low and the maintenance and repair costs are reduced.

[0044] In addition, the gas flow rate is adjusted by controlling the rise and fall of the water level in the water seal groove 4, thereby adjusting the pressure in the carbonization chamber. The operation is simple, the adjustment is flexible, the accuracy is high, and the adjustment effect is better.

Claims

1. A coke oven carbonization chamber pressure regulating device, detachably connected between a bridge pipe (2) and a gas collecting pipe (3), characterized in that: It comprises a casing (1), the lower end of the bridge pipe (2) extends into the casing (1) from the top of the casing (1), and the lower end of the casing (1) is connected to the upper end of the gas collecting pipe (3); The casing (1) is provided with a water seal groove (4) inside and has an open upper end. The casing (1) is provided with a water volume control structure (5) outside, which is in communication with the water seal groove (4) and can control the water volume in the water seal groove (4). The lower end of the bridge pipe (2) extends into the water seal groove (4), and a preset distance is left between the lower end and side walls of the bridge pipe (2) and the bottom wall and side walls of the water seal groove (4), and a preset distance is left between the top end, bottom end and side walls of the water seal groove (4) and the sleeve (1).

2. A coke oven carbonization chamber pressure regulating device as claimed in claim 1, characterized in that: The water volume control structure (5) is connected to the bottom of the water seal groove (4) through a pipeline.

3. A coke oven carbonization chamber pressure regulating device as claimed in claim 2, characterized in that: The water volume control structure (5) is a water tank, the bottom of which is connected to the bottom of the water seal tank (4) through a pipeline, and a drain valve is provided at the bottom.

4. A coke oven carbonization chamber pressure regulating device as claimed in claim 3, characterized in that: The top of the water volume control structure (5) is higher than the top of the water sealing groove (4).

5. A coke oven carbonization chamber pressure regulating device as claimed in claim 4, characterized in that: The water volume control structure (5) is in the shape of a transparent tube.

6. A coke oven carbonization chamber pressure regulating device as claimed in claim 5, characterized in that: The outer side wall of the water volume control structure (5) is provided with a pressure scale.

7. A coke oven carbonization chamber pressure regulating device as claimed in claim 1, characterized in that: The lower end port of the bridge pipe (2), the water seal groove (4) and the sleeve (1) are all circular in cross section, and their vertical axes are collinear.

8. A coke oven carbonization chamber pressure regulating device as claimed in claim 7, characterized in that: The distance between the lower end of the bridge pipe (2) and the bottom of the water seal groove (4) is greater than or equal to the radius of the lower end port of the bridge pipe (2).

9. A coke oven carbonization chamber pressure regulating device as claimed in claim 8, characterized in that: The water seal groove (4) is located at the center of the sleeve (1).

10. A coke oven carbonization chamber pressure regulating device according to any one of claims 1 to 9, characterized in that: The outer side of the water seal groove (4) is provided with an anti-overflow groove (6), the anti-overflow groove (6) is fixedly connected to the water seal groove (4) and a water storage space is provided between them, the top of which is higher than the top of the water seal groove (4), the side wall of the sleeve (1) is provided with a drainage port, the lower part of the anti-overflow groove (6) is connected to the drainage port, and a transparent cover plate is provided at the drainage port.

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