High-performance throttle valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a high-performance throttling valve. Comprising a valve body, a valve cover and a valve rod, a medium inlet and a medium outlet are formed in the valve body, a valve seat opening is formed in the valve body, the valve seat opening is communicated with the medium inlet and the medium outlet, and a valve seat is installed at the valve seat opening; a ball cage is arranged at the top of the valve seat, a valve clack is vertically arranged in the ball cage, and the bottom of the valve clack is connected with a valve element. One end of the valve rod extends into the valve body through an opening formed in the top of the valve body and is connected with the top of the valve clack, an adjusting opening matched with the valve element is formed in the top of the valve seat, the valve deck is installed at the opening, and a driving assembly is installed at the other end of the valve rod. In the application, through the structural arrangement of the ball cage, the flow direction of the fluid from the medium inlet is differentiated, the valve core is prevented from being directly impacted, and the impact of the high-pressure fluid on the valve core can be reduced; and the performance of the high-performance throttle valve is stable.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to a high-performance throttle valve. Background Technology

[0002] High-performance throttle valves are primarily used for efficient control of fluid flow and pressure to ensure normal equipment operation. Applicable media include: coal gas, oil, steam, water, nitrogen-hydrogen mixtures, alkaline solutions, and liquid ammonia. When combined with other components such as check valves or relief valves, they can form various pipeline control systems to achieve precise control of fluid flow and quality.

[0003] The prior art provides a cage-type throttling valve (patent application publication number CN116085481A), which first achieves a throttling effect through a first throttling orifice on a first sleeve, and then achieves a throttling effect through a second throttling orifice on a valve seat; this allows for more precise control of throttling and fluid pressure. However, the aforementioned throttling valve achieves a throttling effect through the first throttling orifice on the first sleeve and the second throttling orifice on the valve seat. This throttling operation only involves one flow reversal of the fluid, causing the fluid to directly scour the first sleeve and valve seat. This results in significant vibration of the liquid inside the throttling valve during flow, preventing the throttling valve from achieving a high-performance throttling effect, necessitating further improvement. Utility Model Content

[0004] The purpose of this invention is to provide a high-performance throttling valve to solve the problem that in the prior art, throttling valves are easily subjected to large vibrations caused by the forward scouring of fluid during throttling operation, resulting in large fluctuations in the throttling effect of the valve.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-performance throttling valve includes a valve body, a valve cover, and a valve stem. The valve body has a medium inlet and a medium outlet. The valve body has a valve seat port that connects the medium inlet and the medium outlet, and a valve seat is installed at the valve seat port. A ball cage is provided on the top of the valve seat, and a valve disc is vertically arranged inside the ball cage. A valve core is connected to the bottom of the valve disc. One end of the valve stem extends into the valve body through an opening provided on the top of the valve body and connects to the top of the valve disc. An adjustment port that cooperates with the valve core is provided on the top of the valve seat. The valve cover is installed at the opening. A drive assembly is installed on the other end of the valve stem. The ball cage has inner and outer walls. The inner wall is configured as an upper flow wall, a middle transition wall, and a lower flow wall. Through holes are arranged in a circular array on the upper flow wall, the lower flow wall, and the outer wall.

[0007] In this application, during the operation of the high-performance throttle valve, fluids such as coal gas and steam enter through the medium inlet and flow uniformly towards the ball cage. Because the outer wall of the ball cage is elliptical, the medium is first guided by the outer wall, splitting into upper and lower portions within the ball cage. Then, it passes through the upper flow wall and the middle transition wall into the lower flow wall, or directly into the lower flow wall, before flowing through the regulating port and valve seat port to the medium outlet. The amount of medium flowing out through the regulating port is controlled by the raising and lowering of the valve core. The upper flow wall, middle transition wall, and lower flow wall can both change the flow velocity and regulate the flow rate of the medium. The medium does not initially impact the valve seat; under the guidance of the ball cage, it can be blocked and guided. Furthermore, the ball cage can rotate to alleviate the direct scouring of the valve core by the medium, protecting the valve core and thus ensuring the stable performance of the high-performance throttle valve.

[0008] Furthermore, the valve disc includes an upper section, a middle section, and a lower section. A waist-shaped adjusting block is fitted onto the middle section of the valve disc at a position corresponding to the intermediate transition wall. The lower section of the valve disc is connected to the valve core. The waist-shaped adjusting block can swing on the middle section of the valve disc, so that the gap between the waist-shaped adjusting block and the intermediate transition wall is maintained within a suitable range.

[0009] Furthermore, a secondary valve core is installed on the upper section of the valve disc corresponding to the upper flow wall; the cooperation between the secondary valve core and the upper flow wall, combined with the cooperation between the valve core and the regulating port, can constitute two throttling adjustments; making the high-performance throttling valve adaptable to more throttling application environments and highly practical.

[0010] Furthermore, a transition section extends from the top of the valve seat, and the transition section engages with the bottom of the ball cage. The bottom of the ball cage has a latch, and the top of the valve seat has a slot. The engagement of the latch and the slot enables a rotational connection between the transition section and the ball cage, which limits the radial movement freedom of the ball cage without affecting its rotation. The outer wall of the transition section is circumferentially arrayed with pressure regulating holes.

[0011] Furthermore, the bottom of the valve seat is provided with a perforated plate, the middle of the perforated plate is provided with a guide rod, and the top of the guide rod is slidably connected with an anti-backflow block; the top of the valve seat is provided with a flow guide port, and the inner surface of the flow guide port can fit against the top outer surface of the anti-backflow block.

[0012] Furthermore, the top of the anti-backflow block is integrally provided with a guide shaft, which passes through the bottom of the valve core and is slidably connected to the valve core.

[0013] The guide shaft guides the movement of the valve core, improving the accuracy of the fit between the valve core and the regulating port, thereby enhancing the throttling performance of the throttling valve.

[0014] Furthermore, the top of the valve cover is provided with a valve stem nut cavity via a connecting bracket; a valve stem nut that is threadedly connected to the valve stem is installed in the valve stem nut cavity.

[0015] Furthermore, the top of the valve cover is provided with a hollow threaded section, through which the valve stem passes. A spacer ring, sealing packing, and pressure sleeve are arranged sequentially from bottom to top between the threaded section and the valve stem. The top of the pressure sleeve is tightened and fixed by a threaded connection to a clamping sleeving on the threaded section. A bearing is provided between the valve cover and the valve stem. A sealing gasket is installed at the connection between the valve cover and the valve body, and the valve body and the valve cover are fixed by connecting bolts.

[0016] Furthermore, the drive assembly includes at least a rotating wheel, which is mounted on the end of the valve stem away from the valve disc. By rotating the valve stem, the valve stem causes the valve core to descend or rise. When the valve core descends, the gap between the outer surface of the valve core and the inner surface of the regulating port decreases, and the valve core may even contact the regulating port. When the valve core rises, the gap between the outer surface of the valve core and the inner surface of the regulating port increases, thus achieving throttling regulation of the high-performance throttling valve.

[0017] The utility model adopting the above technical solution has the following advantages:

[0018] In this application, by setting up a ball cage, the medium at the medium inlet is first guided, and then the medium is guided and diverted multiple times through the upper flow wall, lower flow wall and outer wall of the ball cage. This can alleviate the direct impact of the medium on the valve core and protect the valve core; it makes the performance of the high-performance throttle valve stable and optimizes the phenomenon of unstable operation of traditional valves. Attached Figure Description

[0019] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0020] Figure 1 This is a three-dimensional structural diagram of the high-performance throttle valve of this utility model;

[0021] Figure 2 This is a front view of the high-performance throttle valve of this utility model;

[0022] Figure 3 for Figure 2 A schematic cross-sectional view along the AA direction;

[0023] Figure 4 This is a schematic diagram of the structure of the valve disc, valve seat, and valve core in this utility model;

[0024] Figure 5 for Figure 4 Cross-sectional schematic diagram along the BB direction;

[0025] The symbols for the main components are explained below:

[0026] 101. Valve body; 102. Valve cover; 103. Connecting bracket; 104. Valve stem; 105. Rotor; 106. Connecting bolt; 107. Inlet flange; 108. Outlet flange; 109. Medium inlet; 110. Valve stem nut cavity; 111. Lock nut; 112. Threaded section; 113. Valve seat; 114. Anti-backflow plug; 115. Valve core; 116. Waist-shaped adjusting block; 117. Ball cage; 118. Valve disc; 119. Limiting wall; 120. Medium outlet; 121. 122. Through hole; 123. Transition section; 124. Hollow plate; 125. Limiting ring; 126. Connecting rod; 127. Limiting plate; 128. Upper flow wall; 129. Middle transition wall; 130. Lower flow wall; 131. Adjusting port; 132. Guide port; 133. Guide rod; 134. Pressure regulating hole; 135. Lower section of valve disc; 136. Middle section of valve disc; 137. Upper section of valve disc; 200. Sealing assembly; 201. Compression nut; 202. Compression sleeve; 203. Sealing packing; 204. Spacer ring. Detailed Implementation

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0028] like Figures 1-5As shown, a high-performance throttle valve according to an embodiment of the present invention includes a valve body 101, a valve cover 102, and a valve stem 104. The valve body 101 is provided with a medium inlet 109 and a medium outlet 120. A valve seat port is provided inside the valve body 101, which connects the medium inlet 109 and the medium outlet 120. A valve seat 113 is installed at the valve seat port. A ball cage 117 is provided on the top of the valve seat 113. The ball cage 117 is oval-shaped. A valve disc 118 is vertically arranged inside the ball cage 117. A valve core 115 is connected to the bottom of the valve disc 118. One end of the valve stem 104 extends into the valve body 101 through an opening at the top of the valve body 101 and connects to the top of the valve disc 118. The top of the valve seat 113 is provided with an adjustment port 130 that cooperates with the valve core 115. The valve cover 102 is installed at the opening. The other end of the valve stem 104 is equipped with a drive assembly. The drive assembly includes a rotating wheel 105, which is installed at the end of the valve stem 104 away from the valve disc 118. The top end of the valve stem 104 is machined with a threaded connection section, and the rotating wheel 105 is fixed to the threaded connection section by a locking nut 111. The ball cage 117 has inner and outer walls. The inner wall consists of an upper flow wall 127, a middle transition wall 128, and a lower flow wall 129. Through holes 121 are arranged in a circular array on the upper flow wall 127, the lower flow wall 129, and the outer wall. The medium enters the outer and inner walls through the through holes 121, then flows out from the bottom of the ball cage 117, and flows through the regulating port 130 to the medium outlet 120. During this process, because the outer wall of the ball cage 117 is elliptical (or rugby ball-shaped), the medium is first diverted by the outer wall to the upper and lower ends of the ball cage 117. Then, it passes through the upper flow wall 127 and the middle transition wall 128 into the lower flow wall 129, and directly into the lower flow wall 129, before flowing through the regulating port 130 and the valve seat to the medium outlet 120. The amount of medium flowing out from the regulating port 130 is controlled by the valve core 115 changing the gap between itself and the regulating port 130 as it rises and falls. The upper flow wall 127, the middle transition wall 128, and the lower flow wall 129 can change the flow velocity of the medium and regulate its flow rate. The medium will not impact the valve seat 113 first. Under the guidance of the ball cage 117, the medium can be blocked and guided to protect the valve core 115, thereby ensuring the stable performance of the high-performance throttle valve.

[0029] In this embodiment, as Figure 1As shown, the manually driven rotary wheel 105 drives the valve stem 104 to rotate. Simultaneously, the valve stem 104 rotates and rises and falls, driving the valve disc 118 to move the valve core 115. The movement of the valve core 115 adjusts the distance between itself and the regulating port 130, thereby achieving throttling. Of course, depending on actual needs, the drive assembly can also be electrically driven. That is, an electric actuator is mounted on the valve cover 102 via a connecting bracket 103. The output end of the electric actuator is connected to the valve stem 104 to drive its rotation. The electric actuator includes, but is not limited to, electric motors, pneumatic motors, etc.

[0030] In this embodiment, the top of the valve cover 102 is integrally provided with a valve stem nut cavity 110 via a connecting bracket 103; a valve stem nut that is threadedly connected to the valve stem 104 is installed in the valve stem nut cavity 110.

[0031] Rotating the valve stem 104 via the rotating wheel 105 allows the valve stem 104 to move up and down under the threaded engagement of the valve stem nut. This, in turn, causes the valve disc 118 and valve core 115 to descend or rise. When the valve core 115 descends, the gap between the outer surface of the valve core 115 and the inner surface of the regulating port 130 decreases, and the valve core 115 may even come into contact with the regulating port 130. When the valve core 115 rises, the gap between the outer surface of the valve core 115 and the inner surface of the regulating port 130 increases, thus achieving throttling control of the valve.

[0032] In this embodiment, as Figure 3 As shown, the top of the valve cover 102 is provided with a hollow threaded section 112, and the valve stem 104 passes through the middle of the threaded section 112. A sealing assembly 200 is provided between the threaded section 112 and the valve stem 104. The sealing assembly 200 includes a spacer ring 204, a sealing packing 203 and a pressure sleeve 202 arranged sequentially from bottom to top. The top of the pressure sleeve 202 is pressed and fixed by a threaded connection to the clamping sleeving 201 of the threaded section 112.

[0033] An inlet flange 107 is provided at the right end of the valve body 101, and an outlet flange 108 is provided at the lower end to connect to the pipeline to be throttled and regulated. A bearing is provided between the valve cover 102 and the valve stem 104; the bearing can be installed through an interference fit or a retaining ring. A sealing gasket is installed at the connection between the valve cover 102 and the valve body 101, and the valve body 101 and the valve cover 102 are fixed together by connecting bolts 106. The sealing packing 203 mainly serves a sealing function, while allowing the valve stem 104 to rotate.

[0034] In this embodiment, as Figure 4 , Figure 5As shown, the top of the valve seat 113 is connected to three evenly distributed connecting rods 125, and the top of the connecting rods 125 is connected to a limiting plate 126. A through hole is provided in the middle of the limiting plate 126, through which the valve disc 118 passes, and the hole and the valve disc 118 slide together.

[0035] A limiting ring 124 is connected to the middle of the connecting rod 125. The limiting ring 124 and the ball cage 117 are engaged by a clamp, and the ball cage 117 can rotate under the constraint of the limiting ring 124. It should be noted that when the medium flows through the ball cage 117, the impact of the medium on the ball cage 117 may be different, so the ball cage 117 may or may not rotate.

[0036] In this embodiment, a limiting sleeve (not shown in the figure) is installed on the inner wall of the bottom of the valve cover 102. The bottom of the limiting sleeve abuts against the top of the limiting plate 126. The limiting sleeve can limit the valve seat 113 in the vertical direction, and a sealing ring can be set inside the limiting sleeve to provide a certain sealing function. Combined with the sealing function of the sealing packing 203, the valve body 101 is fully sealed. An inclined limiting wall 119 is provided on the inner wall of the valve body 101 at the medium outlet 120, and the bottom end of the valve seat 113 abuts tightly against the limiting wall 119.

[0037] In this embodiment, as Figure 5 As shown, valve disc 118 includes an upper section 136, a middle section 135, and a lower section 134. A waist-shaped adjusting block 116 is fitted onto the middle section 135, corresponding to the position of the intermediate transition wall 128. The upper section 136 is connected to the valve stem 104, and the lower section 134 is connected to the valve core 115. The upper flow wall 127, the middle transition wall 128, and the lower flow wall 129 are sequentially connected. The upper flow wall 127 has a cross-section that is an isosceles trapezoid with a larger upper section and a smaller lower section. The waist-shaped adjusting block 116 and the middle transition wall 128 are oval-shaped, and the lower flow wall 129 has a cross-section that is an isosceles trapezoid with a smaller upper section and a larger lower section. Thus, through the structural design of the ball cage 117, the medium is guided and diverted multiple times.

[0038] For example, the waist-shaped adjusting block 116 includes four sets of sub-adjusting blocks that are paired on the valve disc 118 by means of springs; the connection between the springs and the valve disc 118 can be achieved by a sliding sleeve welded to the end of the spring, and the sliding sleeve can move on the valve disc 118; a spring can be provided between the waist-shaped adjusting block 116 and the intermediate transition wall 128, and the spring is used to keep the waist-shaped adjusting block 116 isolated or suspended within the intermediate transition wall 128.

[0039] For example, a secondary valve core can be installed on the upper section of the valve disc 118 corresponding to the upper flow wall 127. The cross-sectional shape of the secondary valve core is an isosceles trapezoid with a larger upper section and a smaller lower section, which can fit against the inner surface of the upper flow wall 127.

[0040] In this embodiment, a transition section 122 is provided on the top of the valve seat 113, and the transition section 122 is snapped into the bottom of the ball cage 117; in fact, a snap-fit ​​connection method, a positioning screw fastening method, or a welding method can be used.

[0041] For example, the outer wall of the transition section 122 is provided with pressure regulating holes 133 in a circumferential array; when the valve core 115 rises or falls, the medium entering from the outer wall of the transition section 122 and the medium flowing out from the bottom of the lower flow wall 129 can be flexibly mixed, avoiding the medium flowing in one direction from causing a large impact on the valve core 115. The mixed medium flows from multiple directions to the gap between the valve core 115 and the regulating port 130, and then flows out from the medium outlet 120. The impact is small, protecting the valve core 115, and even the valve seat 113, etc.

[0042] In this embodiment, a perforated plate 123 is provided at the bottom of the valve seat 113, a guide rod 132 is provided in the middle of the perforated plate 123, and an anti-backflow block 114 is slidably connected to the top of the guide rod 132; a flow guide port 131 is provided at the top of the valve seat 113, and the inner surface of the flow guide port 131 can fit against the top outer surface of the anti-backflow block 114.

[0043] Among them, the anti-backflow block 114 can block the guide port 131 when the fluid in the medium outlet 120 backflows, thus acting as a one-way valve; and the guide rod 132 plays a limiting and guiding role; while the guide port 131 and the anti-backflow block 114 can also play a guiding role when the fluid in the regulating port 130 flows through, which is multifunctional and highly practical.

[0044] In this embodiment, a guide shaft is integrally provided on the top of the anti-backflow block 114. The guide shaft passes through the bottom of the valve core 115 and is slidably connected to the valve core 115. The guide shaft can guide the raising and lowering of the valve core 115, improve the accuracy of the fit between the valve core 115 and the regulating port 130, and thus improve the throttling performance of the throttling valve.

[0045] In the high-performance throttle valve described above, during operation, the medium (or fluid) enters from the medium inlet 109 and flows uniformly towards the ball cage 117. Since the outer wall of the ball cage 117 is elliptical, the medium is first guided by the outer wall and diverted to the upper and lower ends of the ball cage 117. Then, a portion passes through the upper flow wall 127 and the middle transition wall 128 and enters the lower flow wall 129, while the other portion directly enters the lower flow wall 129 and then flows through the regulating port 130 and the valve seat port to the medium outlet 120. The amount of medium flowing out from the regulating port 130 is controlled by the raising and lowering of the valve core 115. The upper flow wall 127, the middle transition wall 128, and the lower flow wall 129 can regulate both the velocity and flow rate of the medium. During this process, the medium will not first impact the valve seat 113. Under the guidance of the ball cage 117, the medium can be blocked and guided. Furthermore, the ball cage 117 can reduce the direct scouring of the medium on the valve core 115 by rotation, protecting the valve core 115, valve seat 113, etc., thereby ensuring the stable performance and high practicality of the high-performance throttle valve.

[0046] The above provides a detailed description of a high-performance throttle valve provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high performance throttling valve comprising a valve body, a valve cover and a valve stem, a medium inlet and a medium outlet are arranged on the valve body, a valve seat opening is arranged in the valve body, the valve seat opening communicates the medium inlet and the medium outlet, a valve seat is installed at the valve seat opening; characterized in that, The top of the valve seat is provided with a ball cage, a valve clack is vertically arranged in the ball cage, and a valve core is connected to the bottom of the valve clack; one end of the valve rod extends into the valve body through an opening provided at the top of the valve body and is connected to the top of the valve clack; the top of the valve seat is provided with an adjusting opening matched with the valve core; the valve cover is installed at the opening; the other end of the valve rod is installed with a driving assembly; the ball cage is provided with inner and outer walls, the inner wall is provided with an upper overflow wall, a middle transition wall and a lower overflow wall, and the upper overflow wall, the lower overflow wall and the outer wall are circumferentially provided with through holes.

2. The high performance throttle of claim 1, wherein, The valve clack includes an upper section, a middle section and a lower section of the valve clack, the middle section of the valve clack is sleeved with a waist-shaped adjusting block corresponding to the position of the middle transition wall; the lower section of the valve clack is connected to the valve core.

3. The high performance throttle of claim 2, wherein, The upper section of the valve clack is installed with a secondary valve core corresponding to the position of the upper overflow wall.

4. The high performance throttle of claim 1, wherein, The top of the valve seat is provided with a transition section, the transition section is clamped with the bottom of the ball cage; the outer wall of the transition section is circumferentially provided with a pressure regulating hole.

5. The high performance throttle of claim 1, wherein, The bottom of the valve seat is provided with a hollow plate, the middle of the hollow plate is provided with a guide rod, and the top of the guide rod is slidably connected with an anti-reflux block; the top of the valve seat is provided with a flow guide opening, and the inner surface of the flow guide opening can be attached to the top outer surface of the anti-reflux block.

6. The high performance throttle of claim 5, wherein, The top of the anti-reflux block is integrally provided with a guide shaft, the guide shaft penetrates the bottom of the valve core and is slidably connected with the valve core.

7. The high performance throttle of claim 1, wherein, The top of the valve cover is provided with a valve rod nut cavity through a connecting bracket; the valve rod nut cavity is installed with a valve rod nut threadedly connected with the valve rod.

8. The high performance throttle of claim 1 or 7, wherein, The top of the valve cover is provided with a hollow threaded section, the valve rod passes through the middle of the threaded section, and a spacer ring, a sealing packing and a pressing sleeve are sequentially arranged from bottom to top between the threaded section and the valve rod, the top of the pressing sleeve is threadedly connected to the pressing sleeve of the threaded section and is tightly fixed; a bearing is arranged between the valve cover and the valve rod; a sealing gasket is installed at the connection between the valve cover and the valve body, and the valve body and the valve cover are fixed by connecting bolts.

9. The high performance throttle of claim 1, wherein, The driving assembly at least includes a rotating wheel, and the rotating wheel is installed at the end of the valve rod away from the valve clack.

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