Hydraulic control type coke oven single carbonization chamber raw gas pressure regulating valve

Abstract

The utility model provides a hydraulic control type coke oven single carbonization chamber raw gas pressure regulating valve which comprises a hydraulic control cylinder, an ammonia containing cylinder, a valve body, a valve element and a valve body outer cover, the valve element is arranged in the valve body, and the lower end opening of the ammonia containing cylinder can be kept at different opening degrees through the action of the valve element; the ammonia containing barrel, the valve body and the valve element are all arranged in the valve body outer cover, gaps are reserved between the outer wall of the ammonia containing barrel and the inner wall of the valve body outer cover and between the outer wall of the valve body and the inner wall of the valve body outer cover, a first gap is formed, and the gaps are communicated with an opening in the lower end of the valve body outer cover. The upper end of the hydraulic control cylinder penetrates through the top of the valve body outer cover, the lower end of the hydraulic control cylinder is located in the ammonia containing cylinder, a gap is reserved between the outer wall of the hydraulic control cylinder and the inner wall of the ammonia containing cylinder to form a second gap, and the gap is communicated with the first gap; a hole is formed in the side wall of the lower end of the hydraulic control cylinder; the top end of the hole is lower than the top end of the ammonia containing cylinder. The regulating valve is arranged at a position where a bridge pipe connected with a coke oven single carbonization chamber enters a gas collecting pipe, and can accurately control the raw gas pressure of the carbonization chamber.

Description

Technical Field

[0001] The utility model belongs to the technical field of raw gas pressure regulation in a single carbonization chamber of a coke oven, and particularly relates to a hydraulically controlled raw gas pressure regulating valve in a single carbonization chamber of a coke oven. Background Art

[0002] Coke oven, a furnace usually made of refractory bricks and refractory blocks, is used to char coal to produce coke. The kiln that uses coal to make coke is the main thermal equipment for coking. Modern coke ovens refer to horizontal chamber coke ovens that are mainly used to produce metallurgical coke and can recover coking chemical products. They are composed of a furnace body and auxiliary equipment. The coke oven body consists of the furnace top, combustion chamber and carbonization chamber, chute area, heat storage chamber and other parts, which are connected by flues and chimneys. The basic structure of modern coke ovens is roughly the same, but due to different coal loading methods, heating methods and fuels used, they can be divided into many types.

[0003] The pressure control of the raw gas in the carbonization chamber of the coke oven is mainly achieved by regulating the raw gas pressure in the segmented gas collecting pipe. In the production of coke ovens, the pressure of the raw gas in a single carbonization chamber is easily fluctuated due to the different production states of each carbonization chamber. In the early stage of coal loading and coking, the amount of raw gas is large, and the pressure of the raw gas at the bottom of the carbonization chamber is too high, which will cause unorganized leakage of raw gas in many places such as the coal loading hole, furnace wall, furnace door, and furnace body of the coke oven, causing atmospheric environmental pollution; at the end of coking, the amount of raw gas is small, and negative pressure is easily formed at the bottom of the carbonization chamber, and air is leaked into the carbonization chamber, causing coke burning and furnace body damage.

[0004] At present, there are also some hydraulically controlled regulating valves for regulating the pressure of raw coal gas, but they often have a single regulating function and poor regulating effect, or have a variety of regulating functions but complex structures and high costs. Utility Model Content

[0005] Purpose of the utility model: In order to solve the defects of the prior art, the utility model provides a hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve, which has a simple structure and good regulating effect.

[0006] Technical solution: To achieve the above purpose, the utility model adopts the following technical solution:

[0007] A hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve comprises a hydraulic control cylinder, an ammonia cylinder, a valve body, a valve core and a valve body outer cover, the ammonia cylinder having upper and lower openings, the lower end of which is connected to the valve body, the valve core is arranged in the valve body, and the lower end opening of the ammonia cylinder can be maintained at different openings through the action of the valve core; the upper end of the valve body outer cover is sealed, and the lower end is open, the ammonia cylinder, the valve body and the valve core are all arranged in the valve body outer cover, and gaps are left between the outer walls of the ammonia cylinder and the valve body and the inner wall of the valve body outer cover to form a first gap, which is connected to the lower end opening of the valve body outer cover; the hydraulic control cylinder has upper and lower openings, the upper end of which passes through the top of the valve body outer cover, and the lower end is located inside the ammonia cylinder, and the outer wall of the hydraulic control cylinder and the inner wall of the ammonia cylinder are left with a gap to form a second gap, which is connected to the first gap; an opening is provided on the side wall of the lower end of the hydraulic control cylinder, and the top end position of the opening is lower than the top end position of the ammonia cylinder.

[0008] As a specific implementation scheme, the opening is a strip opening with the same width at the top and bottom, or a strip opening with a width that gradually increases from top to bottom, or a strip opening of other shapes, that is, it is possible to adjust the flow rate of ammonia from the inside to the outside when the ammonia liquid level in the ammonia cylinder rises and falls, thereby realizing the flow regulation of raw coal gas.

[0009] As a specific implementation scheme, the openings are provided in a plurality and evenly distributed on the side wall of the liquid control cylinder; the heights of the openings are the same, or they are different, or the heights are the same or different. The different heights can make the adjustment range of the raw gas flow area larger; the openings are in a continuous state, that is, the lower edges of adjacent openings are connected together, or the openings are in an interval state, that is, there is a certain interval between the lower edges of adjacent openings.

[0010] As a specific implementation, the bottom of the opening is flush with the bottom of the liquid control cylinder, or is higher than the bottom of the liquid control cylinder.

[0011] As a specific implementation scheme, the valve core includes a rotating shaft and a valve plate, and the lower end opening of the ammonia cylinder is controlled to be maintained at different opening degrees by turning the valve plate around the rotating shaft.

[0012] Furthermore, the inner wall of the valve body is provided with a curved surface that matches the edge of the valve plate during the rotation process, that is, a gap is always left between the edge of the valve plate and the curved surface during the rotation process; the inner wall of the valve body is also provided with a protrusion, and when the valve plate rotates to a certain maximum opening position, its edge can contact the protrusion to form a hard seal. The protrusion can provide a stop for the rotation of the valve plate, so that the adjustment is within a limited angle range.

[0013] Furthermore, the hydraulic control cylinder, the ammonia cylinder and the outer cover of the valve body are designed with the same central axis, and the centers of the valve body and the valve plate are both located on the central axis, or are both offset from the central axis.

[0014] As a specific implementation scheme, the lower end of the ammonia cylinder is conical, which can be a positive cone or a partial cone; the lower end of the outer cover of the valve body is a positive cone.

[0015] As a specific implementation scheme, the hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve is arranged at the position where the bridge pipe connecting the coke oven single carbonization chamber enters the gas collecting pipe.

[0016] Beneficial effects: Compared with the prior art, the utility model of the hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve is arranged at the position where the bridge pipe connecting the single carbonization chamber of the coke oven enters the gas collecting pipe, which can control the circulation of the raw gas, especially through the combination of flap valve regulation and liquid level regulation. When the coke oven is under low load, the circulation of the raw gas can be changed more accurately, and the raw gas pressure in the carbonization chamber can be accurately controlled to keep the pressure in the carbonization chamber within the required control range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the pressure regulating valve of the utility model.

[0018] Figure 2 It is a schematic diagram of the flow of liquid and gas when the pressure regulating valve of the utility model is in a fully open state.

[0019] Figure 3 The figure is a schematic diagram of the flow of liquid and gas when the pressure regulating valve of the utility model is at a certain opening.

[0020] Figure 4 It is a schematic diagram of the flow of liquid and gas when the pressure regulating valve of the utility model is in a fully closed state. DETAILED DESCRIPTION

[0021] The utility model device is further described below in conjunction with the accompanying drawings.

[0022] In the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent.

[0023] Example 1

[0024] A hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve, such as Figure 1As shown, it includes a hydraulic control cylinder 1, an ammonia cylinder 2, a valve body 3, a valve core 4 and a valve body outer cover 5. The ammonia cylinder 2 is opened at the top and bottom, and its lower end is connected to the valve body 3. The valve core 4 is arranged in the valve body 3. The lower end opening of the ammonia cylinder 2 can be maintained at different openings through the action of the valve core 4; the upper end of the valve body outer cover 5 is sealed and the lower end is open. The ammonia cylinder 2, the valve body 3 and the valve core 4 are all arranged in the valve body outer cover 5, and there are gaps between the outer walls of the ammonia cylinder 2 and the valve body 3 and the inner wall of the valve body outer cover 5 to form a first gap 101, which is connected to the lower end opening of the valve body outer cover 5; the hydraulic control cylinder 1 is opened at the top and bottom, and its upper end passes through the top of the valve body outer cover 5, and the lower end is located inside the ammonia cylinder 2, and there is a gap between the outer wall of the hydraulic control cylinder 1 and the inner wall of the ammonia cylinder 2 to form a second gap 102, which is connected to the first gap 101; an opening 11 is provided on the side wall of the lower end of the hydraulic control cylinder 1, and the top position of the opening 11 is lower than the top position of the ammonia cylinder 2.

[0025] The opening 11 is a strip opening with the same width from top to bottom, or a strip opening with a width gradually increasing from top to bottom, or a strip opening of other shapes, that is, it can adjust the flow of ammonia from inside to outside when the liquid level of ammonia water in the ammonia cylinder rises and falls, so as to achieve the flow regulation of raw gas. A number of openings 11 are set, evenly distributed on the side wall of the liquid control cylinder 1; the heights of each opening 11 are the same, or different, or the heights are the same or different, and the different heights can make the raw gas flow area adjustment range larger; each opening 11 is in a continuous state, that is, the lower edges of adjacent openings are connected together, or each opening 11 is in an interval state, that is, there is a certain interval between the lower edges of adjacent openings. The bottom of the opening 11 is flush with the bottom position of the liquid control cylinder 1, or higher than the bottom position of the liquid control cylinder 1. In this embodiment, the opening 11 can be made into an opening with a triangular cross-section (the width gradually increases from top to bottom), and a number of openings 11 are evenly arranged, each opening 11 is continuous to form a tooth-shaped groove, and the height and shape of each triangle can be different.

[0026] The valve core 4 includes a rotating shaft 41 and a valve plate 42. The valve plate 42 is turned around the rotating shaft 41 to control the lower end opening of the ammonia cylinder 2 to maintain different openings, that is, to control the flow rate of the internal fluid and adjust the ammonia liquid level in the ammonia cylinder 2. The inner wall of the valve body 3 is provided with a curved surface 31 that matches the edge of the valve plate 42 during the rotation process, that is, the edge of the valve plate 42 always leaves a gap with the curved surface 31 during the rotation process; the inner wall of the valve body 3 is also provided with a protrusion 32. When the valve plate 42 rotates to a certain maximum opening position, its edge can contact the protrusion 32 to form a hard seal. The protrusion can provide a stop for the rotation of the valve plate, so that the adjustment is within a limited angle range. The hydraulic control cylinder 1, the ammonia cylinder 2 and the outer cover 5 of the valve body are designed with the same central axis. The centers of the valve body 3 and the valve plate 42 can be located on the central axis or can be deviated from the central axis. The eccentric state can make the rotating axis 41 shorter. The lower end of the ammonia cylinder 2 is conical, which can be a positive cone or a partial cone; the lower end of the valve body outer cover 5 is a positive cone, so as to facilitate the connection of the raw gas transmission pipeline at the lower part.

[0027] In specific application, the hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve is arranged at the position where the bridge pipe connecting the coke oven single carbonization chamber enters the gas collecting pipe.

[0028] like Figure 2 As shown, when the valve plate 42 is in the fully open position, there is no liquid level in the ammonia cylinder and the flow area is maximum. This state is suitable for a period when a large amount of raw gas is generated, such as the initial stage of coal loading.

[0029] like Figure 3 As shown, when the valve plate 42 is at a certain opening, there is a liquid level height in the ammonia cylinder 2, and there is a partial flow section of the raw gas in the liquid control cylinder 1 (i.e., a partial section of the opening 11). At this time, the raw gas can flow out from the opening 11, enter the first gap 101 between the ammonia cylinder 2 and the outer wall of the valve body 3 through the second gap 102, and then flow downstream. This state is suitable for the coking period when a certain amount of raw gas is generated.

[0030] like Figure 4 As shown in the figure, when the valve plate 42 is in the fully closed position, the liquid level in the ammonia cylinder 2 reaches the highest position, which is equal to the top height of the ammonia cylinder 2. At this time, there is very little raw gas from the upstream, and the ammonia water that continues to flow from the upstream makes the ammonia cylinder 2 overflow, while the raw gas has been completely blocked and is not flowing. The overflowing ammonia water can tar wash the various surfaces through which the raw gas flows in other states. This state is suitable for the period when very little or no raw gas is produced.

[0031] Although the utility model has been described in detail above with general descriptions and specific implementation schemes, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve, characterized in that: The invention comprises a hydraulic control cylinder (1), an ammonia cylinder (2), a valve body (3), a valve core (4) and a valve body outer cover (5); the ammonia cylinder (2) is opened at the top and bottom, and its lower end is connected to the valve body (3); the valve core (4) is arranged in the valve body (3); the lower end opening of the ammonia cylinder (2) can be kept at different opening degrees through the action of the valve core (4); the valve body outer cover (5) is sealed at the top and open at the bottom; the ammonia cylinder (2), the valve body (3) and the valve core (4) are all arranged in the valve body outer cover (5); and the outer walls of the ammonia cylinder (2) and the valve body (3) are connected to the valve body outer cover (5). A gap is left between the inner walls of the valve body outer cover (5), forming a first gap (101), which is connected to the lower end opening of the valve body outer cover (5); the hydraulic control cylinder (1) has upper and lower openings, the upper end of which passes through the top of the valve body outer cover (5), and the lower end is located inside the ammonia cylinder (2), and a gap is left between the outer wall of the hydraulic control cylinder (1) and the inner wall of the ammonia cylinder (2), forming a second gap (102), which is connected to the first gap (101); an opening (11) is provided on the side wall of the lower end of the hydraulic control cylinder (1), and the top end position of the opening (11) is lower than the top end position of the ammonia cylinder (2).

2. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 1 is characterized in that: The opening (11) is a strip-shaped opening with the same width from top to bottom, or a strip-shaped opening with a width that gradually increases from top to bottom.

3. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 1 is characterized in that: A plurality of openings (11) are arranged and evenly distributed on the side wall of the liquid control cylinder (1); the heights of the openings (11) are the same, or the heights are different, or the heights are the same or different; the openings (11) are in a continuous state, that is, the lower end edges of adjacent openings are connected together, or the openings (11) are in an interval state.

4. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 1 is characterized in that: The bottom of the opening (11) is flush with the bottom of the hydraulic control cylinder (1), or is higher than the bottom of the hydraulic control cylinder (1).

5. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 1 is characterized in that: The valve core (4) comprises a rotating shaft (41) and a valve plate (42). The valve plate (42) is turned around the rotating shaft (41) to control the lower end opening of the ammonia cylinder (2) to be maintained at different opening degrees.

6. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 5 is characterized in that: The inner wall of the valve body (3) is provided with a curved surface (31) that matches the edge of the valve plate (42) during the rotation process, that is, a gap is always left between the edge of the valve plate (42) and the curved surface (31) during the rotation process; the inner wall of the valve body (3) is also provided with a protrusion (32), and when the valve plate (42) rotates to a certain maximum opening position, its edge can contact the protrusion (32) to form a hard seal.

7. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 5 is characterized in that: The liquid control cylinder (1), the ammonia cylinder (2) and the valve body outer cover (5) are designed to be coaxial, and the centers of the valve body (3) and the valve plate (42) are both located on the central axis, or are both offset from the central axis.

8. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 1 is characterized in that: The lower end of the ammonia cylinder (2) is conical; the lower end of the valve body outer cover (5) is a positive cone.

9. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 8, characterized in that: The lower end of the ammonia containing cylinder (2) is in a positive cone shape or a partial cone shape.

10. The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve according to claim 1, characterized in that: The hydraulically controlled coke oven single carbonization chamber raw gas pressure regulating valve is arranged at the position where the bridge pipe connecting the coke oven single carbonization chamber enters the gas collecting pipe.

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