Rotary curved surface turning plate type pressure regulating valve for single carbonization chamber of coke oven

Abstract

The utility model provides a rotating curved surface turning plate type pressure regulating valve for a single carbonization chamber of a coke oven, which comprises a valve core and a valve body, the valve core is arranged in the valve body, the valve core comprises a rotating shaft and a valve plate, and the flow velocity of fluid in the valve body is regulated and controlled through the turning of the valve plate around the rotating shaft; a curved surface matched with the edge of the valve plate in the rotating process is arranged on the inner wall of the valve body, namely, a gap is always reserved between the edge of the valve plate and the curved surface in the rotating process; a protrusion is further arranged on the inner wall of the valve body, and when the valve plate rotates to a certain angle, the edge of the valve plate can make contact with the protrusion to form hard sealing. The rotary curved surface turning plate type pressure regulating valve for the single carbonization chamber of the coke oven is arranged at a position where a bridge pipe connected with the single carbonization chamber of the coke oven enters a gas collecting pipe, so that the circulation of raw gas can be effectively controlled when the valve plate rotates by a small angle, and particularly, the circulation condition of the raw gas can be accurately changed when the coke oven is in low load; and the raw gas pressure in the carbonization chamber is accurately controlled, so that the pressure in the carbonization chamber is kept within a required control range.

Description

Technical Field

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

[0002] The raw gas pressure in the carbonization chamber of the coke oven reaches its maximum value at the beginning of coal loading, reaches a basically stable value during the stable coking period, and reaches a minimum value at the end of coking when the raw gas output is very small.

[0003] The raw gas produced in each carbonization chamber passes through the riser at the top of the coke oven, through the bridge pipe, and enters the gas collecting pipe. The raw gas in the gas collecting pipe is continuously driven by the gas induced draft fan and enters the subsequent process links.

[0004] Due to the continuous driving of the gas induced draft fan, when a carbonization chamber is in the final stage of coking, if there is no monotonic device, a slight negative pressure may appear in the carbonization chamber.

[0005] Since coking in the carbonization chamber must go through the steps of coal loading, coking, heat preservation, and coke discharging, and the amount of raw gas produced in the coal loading, coking, and heat preservation steps is different, the raw gas pressure in the carbonization chamber is also different. When the pressure is too high, the raw gas and smoke in the carbonization chamber leak out through the coke oven wall to the surrounding environment, causing gas leakage, polluting the environment, and posing a safety hazard; when the pressure is too low or even negative pressure, the ambient air enters the carbonization chamber through the coke oven wall, causing coke combustion and reducing the quality of the coke. The pressure regulating device of the single carbonization chamber of the coke oven plays the role of stabilizing the pressure, for example, stabilizing it in the range of +5 to +50Pa to avoid the above problems.

[0006] like Figure 3 As shown, the pressure regulating device of the carbonization chamber of the coke oven is usually a single flap type regulating valve structure. In order to ensure that the flap is not stuck when rotating, there must be a gap between the flap and the inner wall of the channel, and during the pressure regulation process, even during the insulation period, a small amount of raw coal gas is still produced, so the valve plate cannot be rotated to the closed state, which results in a negative pressure phenomenon in the carbonization chamber during the insulation period. Especially when the coke oven is running at low load, the coking time needs to be extended, and the proportion of time periods with extremely small amounts of raw coal gas production increases significantly, making it impossible to have a good control over the pressure in the carbonization chamber during this period.

[0007] Conventional flap regulating valves, when the coke oven is under low load, even if the valve plate rotates a small angle, the flow of raw gas is still large, and the purpose of accurately controlling the flow of raw gas cannot be achieved. The utility model can overcome this drawback, so that the purpose of accurately controlling the flow of raw gas can be achieved even when the coke oven is under low load. Utility Model Content

[0008] Technical problem: In order to solve the defects of the prior art, the utility model provides a rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve.

[0009] Technical solution: To solve the above technical problems, the utility model provides the following technical solutions:

[0010] A rotating curved flap type coke oven single carbonization chamber pressure regulating valve, the regulating valve comprises a valve core and a valve body, the valve core is arranged in the valve body, the valve core comprises a rotatable valve plate and a rotating shaft, the flow rate of the fluid in the valve body is controlled by flipping the valve plate around the rotating shaft; the inner wall of the valve body is provided with a curved surface that matches the edge of the valve plate during rotation, that is, there is always a gap between the edge of the valve plate and the curved surface during rotation; the inner wall of the valve body is also provided with a protrusion, when the valve plate rotates to a certain angle, its edge can contact the protrusion to form a hard seal.

[0011] As a specific implementation scheme, the valve core also includes a connecting plate, through which the valve plate is connected to a rotating shaft, the rotating shaft is perpendicular to the central axis of the valve body, passes through the connecting plate and can drive the valve plate and the connecting plate to rotate as a whole.

[0012] Furthermore, the rotating shaft passes through the central axis of the valve body.

[0013] As a specific implementation scheme, the curvature of the curved surface is 0 to 25°.

[0014] As a specific implementation, when the valve plate rotates to a certain angle, it means that the valve plate rotates to a horizontal direction or close to a horizontal direction.

[0015] As a specific implementation scheme, the protrusion is arranged on the surface of the curved surface, or is directly arranged on the flat inner wall of the valve body and is located at the position where the curved surface ends.

[0016] Further:

[0017] When the protrusion is arranged on the surface of the curved surface, the curvature of the upper curved surface is greater than the curvature of the lower curved surface, or the curvature of the lower curved surface is greater than the curvature of the upper curved surface, or the upper curved surface and the lower curved surface are arranged symmetrically;

[0018] When the protrusion is arranged on the flat inner wall of the valve body and is located at the position where the curved surface ends, the curved surface is arranged only above the protrusion, or only below the protrusion, or symmetrically above and below the protrusion.

[0019] As a specific implementation scheme, the valve body is formed by connecting an upper valve body and a lower valve body, the curved surface and the protrusion are both arranged on the inner wall of the upper valve body, and the lower valve body is a conventional valve body.

[0020] As a specific implementation, the valve plate may be a butterfly flap, a spherical flap, or other types of flaps.

[0021] As a specific implementation scheme, the 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.

[0022] Beneficial effects: Compared with the prior art, the utility model of the rotating curved flap type coke oven single carbonization chamber pressure regulating valve is arranged at the position where the bridge pipe connected to the single carbonization chamber of the coke oven enters the gas collecting pipe. When the valve plate rotates a small angle, the circulation of the raw gas can be effectively controlled, especially when the coke oven is under low load, the circulation of the raw gas can be accurately changed, the raw gas pressure in the carbonization chamber can be accurately controlled, and the pressure in the carbonization chamber can be kept within the required control range. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the regulating valve of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the regulating valve of the utility model (partial enlarged view).

[0025] Figure 3 It is a structural schematic diagram of a conventional regulating valve in the prior art. DETAILED DESCRIPTION

[0026] The utility model device is further described below in conjunction with the accompanying drawings.

[0027] 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 invention 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 a limitation on this patent.

[0028] Example 1

[0029] like Figure 1 As shown, a rotary curved flap type coke oven single carbonization chamber pressure regulating valve, the regulating valve comprises a valve core 1 and a valve body 2;

[0030] The valve core 1 is arranged in the valve body 2. The valve core 1 includes a rotatable valve plate 11 and a rotating shaft 12, and a connecting plate 13. The valve plate 11 is connected to the rotating shaft 12 through the connecting plate 13. The rotating shaft 12 is perpendicular to the central axis of the valve body 2 and passes through the central axis of the valve body 2. The rotating shaft 12 passes through the connecting plate 13 and can drive the valve plate 11 and the connecting plate 13 to rotate as a whole. The regulating valve adjusts the flow rate of the fluid in the control valve body 2 by turning the valve plate 11 around the rotating shaft 12;

[0031] The inner wall of the valve body 2 is provided with a curved surface 201 that matches the edge of the valve plate 11 during the rotation process, that is, a gap is always left between the edge of the valve plate 11 and the curved surface 201 during the rotation process; the inner wall of the valve body 2 is also provided with a protrusion 202, and when the valve plate 11 rotates to a certain angle (horizontally or nearly horizontally), its edge can contact the protrusion 202 to form a hard seal. The curvature of the curved surface 201 can be 0 to 25 degrees.

[0032] like Figure 2 As shown, the protrusion 202 can be arranged on the surface of the curved surface 201 , or can be directly arranged on the flat inner wall of the valve body 2 and located at the position where the curved surface 201 ends.

[0033] When the protrusion 202 is disposed on the surface of the curved surface 201, as different implementations, with the protrusion 202 as the boundary, the curvature of the upper curved surface can be greater than the curvature of the lower curved surface, or the curvature of the lower curved surface is greater than the curvature of the upper curved surface, or the upper curved surface and the lower curved surface are symmetrically disposed;

[0034] When the protrusion 202 is arranged on the flat inner wall of the valve body 2 and is located at the position where the curved surface 201 ends, as different implementation schemes, the curved surface can be arranged only above the protrusion 202, or only below the protrusion 202, or symmetrically above and below the protrusion 202.

[0035] As a solution, the valve body 2 is formed by connecting an upper valve body 21 and a lower valve body 22 , the curved surface 201 and the protrusion 202 are both arranged on the inner wall of the upper valve body 21 , and the lower valve body 22 is a conventional valve body.

[0036] The valve plate 11 can be a butterfly flap, a spherical flap, or other types of flaps.

[0037] The 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.

[0038] The working principle of the above regulating valve is as follows:

[0039] In actual application, the 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, and the valve body 2 can be used as a part of the pipe body. The valve plate 11 can be butterfly-shaped, spherical, etc., and its rotation is controlled by the rotating shaft 12. When the valve plate 11 rotates, a small gap is formed between the curved surface 201 and the edge of the valve plate 11, which can control the flow of raw gas through the valve body 2 to a smaller extent. When the valve plate 11 rotates to a horizontal position, the protrusion 202 coincides with the maximum diameter of the outer edge of the valve plate 11 to form a hard seal, so that when the valve plate 11 rotates to this position, the flow area of ​​the raw gas is close to zero, reaching the minimum flow rate, so that the pressure in the carbonization chamber can be accurately controlled.

[0040] 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 rotating curved flap type coke oven single carbonization chamber pressure regulating valve, characterized in that: The regulating valve comprises a valve core (1) and a valve body (2), wherein the valve core (1) is arranged in the valve body (2), and the valve core (1) comprises a rotatable valve plate (11) and a rotating shaft (12), and the flow rate of the fluid in the control valve body (2) is regulated by turning the valve plate (11) around the rotating shaft (12); the inner wall of the valve body (2) is provided with a curved surface (201) which matches the edge of the valve plate (11) during the rotation process, that is, a gap is always left between the edge of the valve plate (11) and the curved surface (201) during the rotation process; the inner wall of the valve body (2) is also provided with a protrusion (202), and when the valve plate (11) rotates to a certain angle, its edge can contact the protrusion (202) to form a hard seal.

2. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 1, characterized in that: The valve core (1) also includes a connecting plate (13), through which the valve plate (11) is connected to the rotating shaft (12), the rotating shaft (12) being perpendicular to the central axis of the valve body (2), passing through the connecting plate (13) and being able to drive the valve plate (11) and the connecting plate (13) to rotate as a whole.

3. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 2, characterized in that: The rotating shaft (12) passes through the central axis of the valve body (2).

4. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 1, characterized in that: The curvature of the curved surface (201) is 0-25°.

5. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 1, characterized in that: When the valve plate (11) rotates to a certain angle, it means that the valve plate (11) rotates to a horizontal direction or a direction close to a horizontal direction.

6. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 1, characterized in that: The protrusion (202) is arranged on the surface of the curved surface (201), or is directly arranged on the flat inner wall of the valve body (2) and is located at the position where the curved surface (201) ends.

7. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 6, characterized in that: When the protrusion (202) is arranged on the surface of the curved surface (201), with the protrusion (202) as the boundary, the curvature of the upper curved surface is greater than the curvature of the lower curved surface, or the curvature of the lower curved surface is greater than the curvature of the upper curved surface, or the upper curved surface and the lower curved surface are arranged symmetrically; When the protrusion (202) is arranged on the flat inner wall of the valve body (2) and is located at the position where the curved surface (201) ends, the curved surface is only arranged above the protrusion (202), or only arranged below the protrusion (202), or symmetrically arranged above and below the protrusion (202).

8. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 1, characterized in that: The valve body (2) is formed by connecting an upper valve body (21) and a lower valve body (22), and the curved surface (201) and the protrusion (202) are both arranged on the inner wall of the upper valve body (21).

9. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 1, characterized in that: The valve plate (11) is a butterfly flap or a spherical flap.

10. The rotating curved surface flap type coke oven single carbonization chamber pressure regulating valve according to claim 1, characterized in that: The 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.

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