Novel automatic adjusting ball valve

Abstract

The utility model provides a novel automatic adjusting ball valve which comprises a valve seat and a valve core, two sides of the valve seat are provided with ports used for being connected with a medium pipeline, the valve core is rotatably arranged in the valve seat, the valve core is a spherical valve core or a hemispherical valve core, and the valve core is provided with a circulation channel used for being communicated with the ports on the two sides of the valve seat. The inlet shape of the circulation channel on the valve element is designed to be in a reducing shape or a gradually expanding shape in the rotating direction, and in the changing process of the valve seat from the opening state to the closing state, the circulation sectional area formed between the circulation channel of the valve element and the inner wall of the valve seat changes linearly. According to the novel automatic adjusting ball valve, along with the increase of the opening degree, the flow adjusting amount of the ball valve is linearly increased as a whole, and quantitative and accurate control over the fluid flow is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valves, and in particular relates to a novel automatic regulating ball valve. Background Art

[0002] In recent years, large-scale, efficient, and automated modern coke ovens have gradually replaced small and medium-sized coke ovens. The operating principle of the existing coke oven heating system is as follows: gas flows through the main gas pipeline and is distributed to the gas branch pipes of each combustion chamber. Each branch pipe is equipped with a regulating cock, an orifice box, and a switching cock. The regulating orifice plate is installed in the orifice box, and the gas flow is controlled by the orifice plate. The orifice plate aperture varies depending on the coke oven's production status (normal production, extended coking, or the end of the oven drying cycle and the transition to normal heating). However, the orifice plate aperture is fixed within the same production status. Therefore, when changing the coke oven's production status, the orifice box must be manually opened and the aperture of the regulating orifice plate inside must be changed. Furthermore, during actual production, the gas flow to a specific combustion chamber cannot be adjusted according to the actual maturity of the coke in each carbonization chamber.

[0003] It can be seen that in traditional coke oven heating systems, the amount of gas used changes with the different stages of coke oven production, but the aperture of the existing regulating orifice plate is fixed and immutable, and the amount of gas used in each combustion chamber cannot be adjusted individually. When the gas flow needs to be controlled, different regulating orifice plates need to be manually replaced, which not only increases the labor intensity of workers, but also poses the risk of gas leakage.

[0004] Therefore, how to overcome the above technical defects is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The utility model aims to provide a novel automatic regulating ball valve, the overall flow rate of which changes linearly with the change of the opening.

[0006] In order to solve the above technical problems, the utility model provides a new type of automatic regulating ball valve, comprising:

[0007] A valve seat, with ports on both sides for connecting to a medium pipeline;

[0008] A valve core is rotatably disposed in the valve seat, and a flow channel is provided on the valve core for communicating with ports on both sides of the valve seat, wherein the inlet of the flow channel is in a shape of decreasing or gradually expanding along the rotation direction;

[0009] When the valve seat changes from an open state to a closed state, a flow cross-sectional area formed between the flow channel of the valve core and the inner wall of the valve seat changes linearly.

[0010] Optionally, in the above-mentioned novel automatic regulating ball valve, the valve core is a spherical valve core or a hemispherical valve core.

[0011] Optionally, in the above-mentioned novel automatic regulating ball valve, the extension direction of the circulation channel is located at the center line of the valve core, and the inlet and outlet of the circulation channel are symmetrical relative to the center line of the valve core.

[0012] Optionally, in the above-mentioned novel automatic regulating ball valve, when the valve core is a spherical valve core, the inlet and outlet of the circulation channel are centrally symmetrical about the center point of the valve core.

[0013] Optionally, in the above-mentioned novel automatic regulating ball valve, the cross-sectional shape of the circulation channel is a hyperbola, an arc or a cone.

[0014] Optionally, in the above-mentioned novel automatic regulating ball valve, when the cross-sectional shape of the circulation channel is a hyperbola, the upper and lower arc radii of the circulation channel opening are equal to the port radius of the valve seat.

[0015] Optionally, in the above-mentioned novel automatic regulating ball valve, the opening length of the circulation channel is greater than or equal to the diameter of the medium channel of the valve seat;

[0016] And / or, the radius of the long circular arc in the opening shape of the circulation channel is equal to the radius of the medium channel of the valve seat.

[0017] Optionally, the novel automatic regulating ball valve further includes a valve stem and a drive mechanism;

[0018] The driving mechanism is connected to the valve core through the valve stem, and is used to drive the valve stem to rotate, so that the valve core rotates with the valve stem as the axis.

[0019] Optionally, the above-mentioned new automatic regulating ball valve further includes a shaft and a valve cover, the shaft is provided on the opposite side where the valve core is connected to the valve stem, the shaft is rotatably connected to the valve seat, and the valve cover is provided at the connection between the valve seat and the valve stem.

[0020] Optionally, in the above-mentioned novel automatic regulating ball valve, the driving mechanism is a handle;

[0021] Alternatively, the driving mechanism is a pneumatic rotating device, a hydraulic rotating device or an electric rotating device.

[0022] The utility model provides a new type of automatic regulating ball valve, which has the following beneficial effects:

[0023] The inlet shape of the flow channel on the valve core is designed to be tapered or gradually expanded along the rotation direction. When the valve seat changes from an open state to a closed state, the flow cross-sectional area formed between the flow channel of the valve core and the inner wall of the valve seat changes linearly.

[0024] Furthermore, the flow channel openings on both sides of the valve core are arranged symmetrically about the center of the valve core. That is, the cross-sectional areas of the openings (inlet and outlet) on both sides are equal but directed in opposite directions. This allows the cross-sectional area of ​​the flow channel to change linearly within a certain rotation angle of the valve core. The fluid medium always passes along the center of the flow channel, reducing fluid resistance and the possibility of eddy currents. As the opening of this new automatic regulating ball valve increases, the flow adjustment amount of the ball valve increases linearly, achieving quantitative and precise control of the fluid flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of a novel automatic regulating ball valve provided by an embodiment of the utility model;

[0027] Figure 2 This is a structural diagram of a spherical valve core provided in a specific embodiment of the present invention;

[0028] Figure 3 A top view of a spherical valve core provided in a specific embodiment of the present invention;

[0029] Figure 4 for Figure 3 Structural diagram in direction A;

[0030] Figure 5 for Figure 3 Schematic diagram of the structure in direction B;

[0031] Figure 6 A top view of a hemispherical valve core provided in another specific embodiment of the present invention;

[0032] Figure 7 for Figure 6 Structural diagram in direction A;

[0033] Figure 8 This is a flow regulation diagram of a new automatic regulating ball valve provided in an embodiment of the utility model.

[0034] In the above picture:

[0035] 100-valve seat;

[0036] 200-valve core; 210-circulation channel;

[0037] 300-valve stem;

[0038] 400- driving mechanism;

[0039] 500-axis;

[0040] 600-valve cover. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] The core of the utility model is to provide a novel automatic regulating ball valve, the overall flow rate of which changes linearly with the change of the opening.

[0043] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Specifically, please refer to Figures 1-8 The utility model provides a new type of automatic regulating ball valve, including: a valve seat 100 and a valve core 200 rotatably arranged in the valve seat 100.

[0045] The valve seat 100 is connected to the inlet and outlet medium pipelines. Specifically, ports are provided on both sides of the valve seat 100, which are respectively connected to the inlet medium pipeline and the outlet medium pipeline through the ports on both sides.

[0046] The valve core 200 is rotatably disposed within the valve seat 100. A flow channel 210 is formed on the valve core 200 to connect the ports on both sides of the valve seat 100. The flow channel 210 has an inlet and an outlet formed on the two side walls of the valve core 200. The inlet shape is tapered or gradually expanded along the rotation direction.

[0047] When the valve seat 100 changes from an open state to a closed state, the flow cross-sectional area formed between the flow channels 210 on both sides of the valve core 200 and the inner wall of the valve seat 100 changes linearly.

[0048] It should be noted that, according to actual application requirements, the shape of the flow channel 210 of the valve seat 200 can be appropriately adjusted to change the linear trend of the flow regulation curve.

[0049] The new automatic regulating ball valve provided in this solution is designed to have an inlet shape of the flow channel on the valve core that is contracting or gradually expanding along the direction of rotation. When the valve seat changes from an open state to a closed state, the flow cross-sectional area formed between the flow channel of the valve core and the inner wall of the valve seat changes linearly.

[0050] like Figure 2 and Figure 3 The new automatic regulating ball valve shown in the figure has an overall linear increase in flow regulation as the opening increases, thereby achieving quantitative and precise control of fluid flow.

[0051] In a specific embodiment, the valve core 200 is a spherical valve core or a hemispherical valve core, and both ends of the flow channel 210 are opened on the spherical surface of the valve core 200 .

[0052] In a specific embodiment, the extension direction of the circulation channel 210 is located at the center line of the valve core 200, and the inlet and outlet of the circulation channel 210 are symmetrical relative to the center line of the valve core 200, that is, the inlet / outlet opening shape of the circulation channel 210 itself is a symmetrical figure.

[0053] In particular, when the valve core 200 is a spherical valve core, the inlet and outlet of the circulation channel 210 are centrally symmetrical about the center point of the valve core, and the inlet shape and outlet shape of the circulation channel 210 constitute a centrally symmetrical figure, that is, the outlet of the circulation channel 210 can coincide with the inlet of the circulation channel 210 after rotating 180 degrees around the central axis of the valve core 200.

[0054] The opening sizes of the flow channels 210 on both sides of the valve core 200 are designed to be the same in shape and cross-sectional area but in opposite directions, so that the cross-sectional area of ​​the flow channels 210 changes linearly within a certain rotation angle of the valve core 200.

[0055] At the same time, the above-mentioned new automatic regulating ball valve structure allows the fluid to pass through the center of the circulation channel 210, reducing the fluid resistance and the possibility of vortex generation, and controls the circulation cross-sectional area by rotating the valve core 200 to achieve linear regulation of the medium flow.

[0056] In a specific embodiment, the opening of the flow channel 210 may be formed by two straight lines or curves and two circular arcs. Specifically, the upper and lower edges of the cross-section of the flow channel 210 may be shaped as a hyperbola, a circular arc, or a cone. The flow channel 210 of the valve core 200 may have the following cross-sectional shapes depending on the device type and operating conditions: a hyperbola, a parabola, a circular arc, a cone, or other cross-sectional shapes.

[0057] like Figure 4As shown, when the cross-sectional shape of the circulation channel 210 is a hyperbola, the opening of the circulation channel 210 is narrow at the top and wide at the bottom, with the upper side being a short arc and the lower side being a long arc. The length of the opening of the circulation channel 210 is the distance between the upper short arc and the lower long arc. The radius of the upper and lower arcs of the circulation channel 210 opening is equal to the port radius of the valve seat 100.

[0058] The opening length of the circulation channel 210 can be set to be greater than the diameter of the medium channel of the valve seat 100, that is, the radius of the short arc is greater than the radius of the medium channel. The space enclosed by the opening of the circulation channel 210 and the port of the valve seat 100 is the medium channel.

[0059] The radius of the short arc in the opening shape of the circulation channel 210 is designed to be greater than or equal to the radius of the medium channel of the valve seat 100. Figure 4 When the ball valve is in a fully open state at 90 degrees, the short arc at the top will rotate in a direction perpendicular to the image when closing. When the radius of the short arc is greater than the media channel radius of the valve seat 100, the fluid always passes along the center within a certain angle, reducing the fluid medium resistance.

[0060] After careful design of the structural form and design principle of the new automatic regulating ball valve and through calculation, a new automatic regulating ball valve with linear flow regulation can be obtained.

[0061] In a specific embodiment, the present solution also includes a valve stem 300, a drive mechanism 400, a shaft 500 and a valve cover 600, that is, the new automatic regulating ball valve includes a valve seat 100, a valve core 200, a valve stem 300, a drive mechanism 400, a shaft 500 and a valve cover 600.

[0062] The valve core 200 is disposed inside the valve seat 100 and connected to the valve stem 300. The driving mechanism 400 is connected to the valve core 200 through the valve stem 300 and is used to drive the valve stem 300 to rotate, so that the valve core 200 rotates around the valve stem 300 to adjust the flow area of ​​the ball valve.

[0063] To improve the rotational stability of the valve core 200, a shaft 500 is provided on the side opposite the connection between the valve core 200 and the valve stem 300. The shaft 500 is rotatably connected to the valve seat 100, thereby providing rotational support on both the upper and lower sides of the valve core 200. Furthermore, to improve the sealing performance of the valve seat 100, a valve cover 600 is provided at the connection between the valve seat 100 and the valve stem 300.

[0064] This case can adopt manual, pneumatic, hydraulic or electric operation control methods, so the driving mechanism 400 can be a handle, and can also be set as an electric, hydraulic or pneumatic rotating device according to specific circumstances.

[0065] The new automatic regulating ball valve can be applied to various products that need to adjust the medium flow according to actual needs to meet the requirements of production automation and high efficiency.

[0066] For example, when the new automatic regulating ball valve is used in gas pipelines, it has a compact appearance and can be operated and controlled in various ways, such as manual, pneumatic, hydraulic or electric.

[0067] The pyrolysis of coal in a coke oven occurs over three temperature stages. In the first stage, coal pyrolysis produces semi-coke, tar, pyrolysis water, hydrocarbon gases, and carbon oxides. In the second stage, the tar undergoes secondary reactions to produce new gaseous hydrocarbons. Long-chain polymethylene groups produce olefins, alkyl aromatics produce methane and aromatics, and phenols crack to produce gaseous hydrocarbons and carbon monoxide. In the third stage, the products of the second stage continue to crack, producing compounds such as acetylene and naphthol, ultimately yielding condensed-ring aromatic hydrocarbons and carbon black. The semi-coke continues to shrink, releasing carbon monoxide and hydrogen at high temperatures, undergoing polymerization reactions to ultimately produce coke.

[0068] In the early stages of the coking cycle, when the coal charge is first introduced into the carbonization chamber and rapidly dried, the required heat transfer is greatest, resulting in the highest gas flow rate in the combustion chamber. As the coal dries, the required heat gradually decreases and stabilizes. Towards the end of the coking cycle, the required heat further decreases. Throughout the coking cycle, the required heat in the carbonization chamber continues to decrease. Therefore, the required gas flow rate varies dynamically based on the maturity of the coke in the carbonization chamber. The new automatic regulating ball valve dynamically adjusts the amount of gas entering the combustion chamber to meet the required heat in the carbonization chamber throughout the coking cycle.

[0069] According to different working conditions of the coke oven: normal production operation, intense production operation, oven stewing operation, extended coking time operation, etc., the flow cross-sectional area of ​​the ball valve can be adjusted according to actual conditions.

[0070] Depending on the furnace type, fuel type, operating conditions, maturity of the coke in the carbonization chamber at different production stages, etc., the cross-sectional shape of the opening of the valve core 200 of the regulating ball valve includes: hyperbola, arc, cone, and other cross-sectional shapes. The valve core 200 can also be made into a hemispherical shape as needed.

[0071] After calculation, we get Figure 8 The flow control diagram of the new automatic regulating ball valve is shown. It can be seen that as the ball valve opening increases, the flow control amount of the ball valve increases linearly. The flow control amount curve can be changed by adjusting the flow channel 210 of the valve core 200 as needed.

[0072] This new automatic regulating ball valve can dynamically adjust the amount of gas entering the combustion chamber according to the maturity of the coke in each carbonization chamber at different production stages of the coke oven. This allows the valve to be adjusted within a calculated range of different flow cross-sectional areas, dynamically adjusting the amount of gas entering the combustion chamber. This saves gas, reduces energy consumption, and improves coke quality. It also avoids the risk of gas leaks and reduces operator workload.

[0073] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application 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, they cannot be understood as limitations on this application.

[0074] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0075] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A new type of automatic regulating ball valve, characterized in that: include: A valve seat (100), wherein both sides of the valve seat (100) have ports for connecting to a medium pipeline; A valve core (200) is rotatably disposed in the valve seat (100), and a flow channel (210) is provided on the valve core (200) for communicating with ports on both sides of the valve seat (100). The inlet of the flow channel (210) is shaped to be reduced or gradually expanded along the rotation direction; When the valve seat (100) changes from an open state to a closed state, a flow cross-sectional area formed between the flow channel (210) of the valve core (200) and the inner wall of the valve seat (100) changes linearly.

2. The new automatic regulating ball valve according to claim 1 is characterized in that: The valve core (200) is a spherical valve core or a hemispherical valve core.

3. The new automatic regulating ball valve according to claim 2 is characterized in that: The extension direction of the circulation channel (210) is located at the center line of the valve core (200), and the inlet and outlet of the circulation channel (210) are symmetrical relative to the center line of the valve core (200).

4. The new automatic regulating ball valve according to claim 3 is characterized in that: When the valve core (200) is a spherical valve core, the inlet and outlet of the circulation channel (210) are centrally symmetrical about the center point of the valve core (200).

5. The new automatic regulating ball valve according to claim 1 is characterized in that: The cross-sectional shape of the circulation channel (210) is a hyperbola, an arc or a cone.

6. The new automatic regulating ball valve according to claim 5 is characterized in that: When the cross-sectional shape of the circulation channel (210) is a hyperbola, the upper and lower arc radii of the opening of the circulation channel (210) are equal to the port radius of the valve seat (100).

7. The new automatic regulating ball valve according to claim 6 is characterized in that: The opening length of the circulation channel (210) is greater than or equal to the diameter of the medium channel of the valve seat (100); And / or, the radius of the long circular arc in the opening shape of the circulation channel (210) is equal to the radius of the medium channel of the valve seat (100).

8. The new automatic regulating ball valve according to claim 1 is characterized in that: Also includes a valve stem (300) and a drive mechanism (400); The driving mechanism (400) is connected to the valve core (200) through the valve stem (300) and is used to drive the valve stem (300) to rotate, so that the valve core (200) rotates with the valve stem (300) as the axis.

9. The new automatic regulating ball valve according to claim 8 is characterized in that: The valve seat (100) is rotatably connected to the valve core (200) and the valve stem (300). The valve seat (100) is connected to the valve stem (300) by the shaft (500) and the valve cover (600).

10. The new automatic regulating ball valve according to claim 8 is characterized in that: The driving mechanism (400) is a handle; Alternatively, the driving mechanism (400) is a pneumatic rotating device, a hydraulic rotating device or an electric rotating device.

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