Nuclear electric regulating valve resistant to fluctuations

Abstract

The utility model discloses a kind of anti-fluctuation nuclear electric dynamic regulating valve, the anti-fluctuation nuclear electric dynamic regulating valve includes valve body, valve cover, valve cage, valve rod and valve core, the first cavity, second cavity and the through-hole that will be described first cavity and second cavity be communicated are defined in the valve body;The valve cover is installed on the valve body;Valve cage is installed in the through-hole, and extend in the first cavity, and the valve cage is the cylinder structure;The barrel wall of the valve cage is opened with several flow-through holes from top to bottom;The valve rod is slidably arranged on the valve cover;The valve core is the cylinder structure, and the valve core is slidably arranged in the valve cage, and the valve core is connected with the valve rod;The utility model uses the valve core structure, makes its valve flap downstream turbulence fluctuation area small and distribution more uniform, while turbulence intensity is smaller, and the fluid acting force and instantaneous vibration range of valve core are smaller;It is less affected by upstream and downstream fluid turbulence disturbance, and it is more difficult to occur valve position fluctuation phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to an anti-fluctuation nuclear electric actuator valve. Background Technology

[0002] The pressure regulating valve in the deaerator exhibits fluctuation issues, potentially leading to valve failure and consequently, pressure fluctuations in the deaerator. When the pneumatic valve experiences significant fluctuations, the operator must switch to manual control. However, manual control can easily trigger the deaerator's pressure-maintaining logic, causing the pneumatic valve to open unintentionally, resulting in a rapid increase in deaerator pressure and ultimately triggering the safety valve. Furthermore, valve fluctuations can cause vibrations in the piping and valve itself, potentially damaging the valve.

[0003] Pneumatic control valve fluctuation refers to the abnormal phenomenon where the valve position changes within a certain range while the remote input signal remains unchanged. Control valve fluctuations not only cause system instability, but also lead to problems such as valve stem wear and packing leakage within the control valve itself. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an anti-fluctuation nuclear electro-pneumatic regulating valve.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A wave-resistant nuclear electro-pneumatic control valve, comprising: The valve body has a first cavity, a second cavity, and a through hole that connects the first cavity and the second cavity. A valve cover, which is mounted on the valve body; A valve cage, which is cylindrical in structure, is installed in the through hole and extends into the first cavity; the cylinder wall of the valve cage is provided with a plurality of flow holes from top to bottom, and the fluid in the first cavity flows into the second cavity through the plurality of flow holes; A valve stem, which is slidably mounted on the valve cover; The valve core has a cylindrical structure and is slidably disposed within the valve cage. The valve core is connected to the valve stem to drive the valve core to move up and down within the valve cage, thereby opening or blocking the plurality of flow holes on the valve cage.

[0006] Furthermore, in the aforementioned anti-fluctuation nuclear electric actuator valve, preferably the outer diameter of the valve core is equal to the inner diameter of the valve cage, so as to form a seal between the valve core and the valve cage.

[0007] Furthermore, the anti-fluid-wave nuclear electric regulating valve preferably also includes a cup-shaped shroud, the top of which is installed at the bottom of the valve cage, and the shroud is provided with a plurality of rectifying holes to uniformly disperse the fluid.

[0008] Furthermore, in the aforementioned anti-fluctuation nuclear electric power control valve, the valve core preferably includes a cylindrical body and a sealing portion disposed on the outer peripheral surface of the cylindrical body, wherein the sealing portion forms a seal with the valve cage.

[0009] Furthermore, in the aforementioned anti-fluctuation nuclear electric power regulating valve, the valve core preferably further includes a valve core pressure plate installed on the upper end of the cylinder body, and a seal is formed between the valve core pressure plate and the valve core pressure plate.

[0010] Furthermore, in the aforementioned anti-fluctuation nuclear electric actuator valve, the sealing part is preferably protruding from the outer circumferential surface of the cylinder body, and the outer diameter of the sealing part is equal to the inner diameter of the valve cage; Or / and, the outer diameter of the valve core pressure plate is equal to the inner diameter of the valve cage.

[0011] Furthermore, in the aforementioned anti-fluctuation nuclear electric actuator valve, the valve cage preferably includes an upper sleeve, a lower sleeve, and a valve seat; The upper sleeve is connected to the lower sleeve, and the plurality of flow holes include a plurality of first-stage throttling holes, which are arranged from top to bottom on the outer circumferential surface of the lower sleeve; the valve core slides inside the lower sleeve, the lower sleeve is installed on the valve seat, the valve seat is installed inside the through hole, and the valve seat is provided with a connecting hole.

[0012] Furthermore, in the aforementioned anti-fluctuation nuclear electric actuator valve, the valve cage preferably further includes at least one outer sleeve, and the plurality of flow holes further include a plurality of second-stage throttling holes. The plurality of second-stage throttling holes are formed on the outer circumferential surface of the at least one outer sleeve from top to bottom, and correspond one-to-one with the plurality of first-stage throttling holes. The outer circumferential surface of the lower sleeve is provided with an annulus from bottom to top, and the annulus is respectively disposed between two adjacent layers of first-stage throttling holes. The at least one outer sleeve is sleeved on the annulus.

[0013] Furthermore, the anti-fluctuation nuclear electric electric regulating valve preferably further includes a drive assembly installed on the valve cover, the drive assembly being connected to the valve stem to drive the valve core to move up and down within the valve cage.

[0014] Furthermore, in the aforementioned anti-fluctuation nuclear electric pneumatic control valve, the driving assembly preferably includes a pneumatic assembly and / or a manual assembly and / or an electric assembly, the pneumatic assembly and / or the manual assembly and / or the electric assembly being respectively mounted on the valve cover, and the pneumatic assembly and / or the manual assembly and / or the electric assembly being respectively connected to the valve stem to drive the valve core to move up and down via the valve stem.

[0015] The present invention has the following advantages: the valve core structure makes the downstream turbulent fluctuation area of ​​the valve disc smaller and more uniformly distributed, while the turbulence intensity is smaller, and the valve core is subjected to fluid force and instantaneous vibration range is smaller; it is less affected by upstream and downstream fluid turbulence disturbances and is less likely to cause valve position fluctuation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a three-dimensional structural schematic diagram of the anti-fluctuation nuclear electro-pneumatic regulating valve in some embodiments of this utility model; Figure 2 yes Figure 1 A cross-sectional schematic diagram of the anti-fluctuation nuclear electro-pneumatic control valve is shown. Figure 3 yes Figure 1 The diagram shows a three-dimensional structure of the component to be removed. Figure 4 yes Figure 3 The diagram shows a cross-sectional view of the deleted driver component. Figure 5 yes Figure 3 A three-dimensional structural schematic diagram of the valve cage shown; Figure 6 yes Figure 5 A schematic cross-sectional view of the valve cage shown. Figure 7 yes Figure 6 A magnified structural diagram of point A is shown below; Figure 8 yes Figure 5 The diagram shows a three-dimensional structure of the valve core. Detailed Implementation

[0017] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0018] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0020] The technical solution adopted by this utility model to solve its technical problem is: like Figures 1 to 2As shown in the figure, some embodiments of this utility model disclose an anti-fluctuation nuclear power electro-hydraulic regulating valve, which includes a valve body 10, a valve cover 20, a valve cage 30, a valve stem 40, a valve core 50, and a drive assembly 60. The valve body 10 defines a first cavity 11 and a second cavity 12. One end of the valve body 10 is connected to a fluid inlet pipe, and the fluid entering through the fluid inlet pipe enters the first cavity 11. The other end of the valve body 10 is connected to a fluid outlet pipe, and the fluid entering through the first cavity 11 enters the second cavity 12, and the fluid entering through the second cavity 12 enters the fluid outlet pipe. The valve cover 20 is mounted on the valve body 10. The valve cage 30 is mounted inside the valve body 10, and the valve cage 30 has several flow holes 320 formed from top to bottom to guide the fluid along an east-west path through the valve, regulating the smooth flow of the fluid and reducing noise and vibration when the fluid passes through the valve. The valve stem 40 is mounted on the valve cover 20 and is used to move up and down on the valve cover 20. The valve core 50 is disposed within the valve cage 30 and connected to the valve stem 40. It moves up and down with the valve stem 40 to open or close several flow holes 320 on the valve cage 30. Understandably, when the valve core 50 is opened (the valve core 50 moves upward within the valve cage 30), the fluid flowing into the pipeline enters the first chamber 11, then passes through the flow holes 320 into the second chamber 12, and subsequently, the fluid in the second chamber 12 enters the fluid outlet pipeline. The cylindrical structure of the valve core 50 results in a smaller and more uniform turbulent fluctuation area downstream of the valve disc, along with lower turbulence intensity. This reduces the fluid force and instantaneous vibration range on the valve core; it also reduces the impact of upstream and downstream turbulent disturbances, making valve position fluctuations less likely.

[0021] It should also be noted that valve core 50 can completely block the flow hole 320, in which case the valve is closed and fluid does not flow. Valve core 50 can also partially block the flow hole 320, allowing fluid in the first chamber 11 to enter the second chamber through the remaining flow hole 320, thereby changing the connection between the first chamber 11 and the second chamber 12, thus controlling the valve flow rate. Alternatively, valve core 50 can leave the flow hole 320 unblocked (open), allowing fluid in the first chamber 11 to flow quickly to the second chamber 12.

[0022] like Figure 3 and Figure 4 As shown, in some embodiments, the valve body 10 may include a first cavity 11, a second cavity 12, and a through hole 13. The first cavity 11 and the second cavity 12 are respectively defined within the valve body 10; the first cavity 11 is for fluid inlet, and the second cavity 12 is for fluid outlet. The valve cage 30 described above is installed within the through hole 13. Understandably, the first cavity 11 is connected to the fluid inlet pipe, and the second cavity 12 is connected to the fluid outlet pipe.

[0023] like Figure 5 and Figure 6As shown, in some embodiments, the valve cage 30 may include an upper sleeve 31, a lower sleeve 32, a valve seat 33, and an outer sleeve 34. The upper sleeve 31 and lower sleeve 32 are integrally formed and located within the first cavity 11, with the top of the upper sleeve 31 contacting the valve cover 20. The lower sleeve 32 is mounted on the valve seat 33, which is installed within the through hole 13. The valve seat 33 has a connecting hole 330 that connects the lower sleeve 32 to the second cavity 12. The aforementioned flow holes 320 include multiple first-stage throttling holes 321 and multiple second-stage throttling holes 340 (see reference). Figure 7 Multiple first-stage throttling orifices 321 are arranged from top to bottom on the outer circumferential surface of the lower sleeve 33, and multiple second-stage throttling orifices 340 are opened from top to bottom on the outer circumferential surface of the outer sleeve 34. The first-stage throttling orifices 321 and the second-stage throttling orifices 340 correspond one-to-one. Multiple annular bodies 321 are arranged from top to bottom on the outer circumferential surface of the lower sleeve 32, and the outer sleeve 34 is fitted over the multiple annular bodies 321. The annular bodies 321 are respectively arranged between two adjacent layers of flow holes 320. The valve core 50 is slidably disposed in the lower sleeve 32 to block or open several flow holes 320. It can be understood that the fluid in the first cavity 11 enters the interior of the lower sleeve 32 after passing through the multiple first-stage throttling orifices 321 and the second-stage throttling orifices 340, and then enters the second cavity 12 after passing through the connecting hole 330.

[0024] like Figure 6 and Figure 8 As shown, in some embodiments, the valve core 50 may include a cylindrical body 51, a sealing part 52, and a valve core pressure plate 53. The cylindrical body 51 has a cylindrical structure, and the cylindrical body 51 and the sealing part 52 are integrally formed. The sealing part 52 protrudes outward and is located at the bottom end of the outer circumference of the cylindrical body 51. The outer diameter of the sealing part 52 is equal to the inner diameter of the lower sleeve 32, so as to tightly fit with the inner wall of the lower sleeve 32. A sealing structure is formed between the sealing part 52 and the lower sleeve 32 to prevent fluid leakage when the valve core 50 is closed. The valve core pressure plate 53 is located at the upper end of the cylindrical body 51. The outer diameter of the valve core pressure plate 53 is equal to the inner diameter of the lower sleeve 32, so as to tightly fit with the inner wall of the lower sleeve 32. A sealing structure is formed between the valve core pressure plate 53 and the lower sleeve 32 to prevent fluid leakage when the valve core 50 is closed. The sealing part 52 and the valve core pressure plate 53 form a seal at both ends, resulting in better sealing performance and preventing fluid leakage when the valve core 50 is closed.

[0025] In some embodiments, the valve core pressure plate 53 may include a valve core nut, a guide ring, a spacer, a C-ring, a graphite pad, a support ring, and a guide ring.

[0026] Refer again Figure 1In some embodiments, the drive assembly 60 may include a pneumatic assembly 61 and a manual assembly 62. The pneumatic assembly 61 and the manual assembly 62 are respectively mounted on the valve cover 20 and are respectively connected to the valve stem 40, and can respectively drive the valve core 50 to move via the valve stem 40. In other embodiments, the drive assembly 60 may also include an electric assembly, using an electric device to drive the valve stem 40 to move up and down.

[0027] Continue to refer to Figure 2 In some embodiments, the pneumatic assembly 61 may include a bracket 611, a push rod 612, a cylinder 613, a piston 614, a spring cylinder 615, and an elastic element 616. The bracket 611 is mounted above the valve cover 20, the push rod 612 is mounted above the valve stem 40, the cylinder 613 is mounted on the bracket 611, the tip of the push rod 612 passes through the cylinder 613 and connects to the piston 614, and the cylinder 613 has an air inlet and an air outlet. The spring cylinder 615 is mounted on the cylinder 613, the tip of the push rod 612 extends into the spring cylinder 615, and the elastic element 616 is disposed between the push rod 612 and the top wall of the spring cylinder 615 for elastically holding the push rod 612. Understandably, when an external air source fills the cylinder 613 with gas, the gas drives the piston 614 to move upward within the cylinder 613, thereby causing the valve stem 40 to move upward via the push rod 612. When the cylinder 613 exhausts gas, the elastic element 616 presses the push rod 612 downward to drive the valve stem 40 downward.

[0028] Refer again Figure 2 In some embodiments, the manual assembly 62 may include a turbine housing, a turbine 621, a worm gear 622, and a bushing 623. The turbine housing is mounted on a bracket 611. The turbine 621 and worm gear 622 are respectively disposed on the turbine housing and mesh with each other. The bushing 623 is fitted inside the turbine 621 for synchronous rotation with the turbine 621. The bushing 623 is threaded onto the push rod 612 for driving the push rod 612 to move up and down.

[0029] The anti-fluid-wave nuclear electric control valve also includes a rectifier 70, the top of which is mounted on the bottom of the valve cage 30. The rectifier 70 has several rectifier holes 71 to evenly disperse the fluid. Understandably, the fluid enters the rectifier 70 after passing through several flow holes 320, and then enters the second chamber 12 through several rectifier holes 71, ensuring even fluid dispersion and smoother fluid flow, thus reducing fluctuations.

[0030] It should be noted that, for those skilled in the art, without departing from the concept of this utility model, the above-mentioned technical features can be freely combined, and several modifications and improvements can be made, all of which fall within the protection scope of this utility model.

Claims

1. A nuclear electro-pneumatic control valve resistant to fluctuations, characterized in that, include: Valve body (10), wherein a first cavity (11), a second cavity (12), and a through hole (13) connecting the first cavity (11) and the second cavity (12) are defined inside the valve body (10). Valve cover (20), the valve cover (20) is mounted on the valve body (10); The valve cage (30), which is cylindrical in structure, is installed in the through hole (13) and extends into the first cavity (11); the cylinder wall of the valve cage (30) is provided with a plurality of flow holes (320) from top to bottom, and the fluid in the first cavity (11) flows into the second cavity (12) through the plurality of flow holes (320). Valve stem (40), which is slidably disposed on the valve cover (20); The valve core (50) is cylindrical and is slidably disposed in the valve cage (30). The valve core (50) is connected to the valve stem (40) to drive the valve core (50) to move up and down in the valve cage (30) to open or block the plurality of flow holes (320) on the valve cage (30).

2. The anti-fluctuation nuclear electric actuator valve according to claim 1, characterized in that, The outer diameter of the valve core (50) is equal to the inner diameter of the valve cage (30) to form a seal between them.

3. The anti-fluctuation nuclear electric actuator valve according to claim 1, characterized in that, It also includes a cup-shaped shroud (70), the top of which is mounted on the bottom of the valve cage (30), and the shroud (70) is provided with a plurality of rectifier holes (71) to uniformly disperse the fluid.

4. The anti-fluctuation nuclear electric actuator valve according to claim 1, characterized in that, The valve core (50) includes a cylindrical body (51) and a sealing part (52) disposed on the outer peripheral surface of the cylindrical body (51), and the sealing part (52) forms a seal with the valve cage (30).

5. The anti-fluctuation nuclear electric actuator valve according to claim 4, characterized in that, The valve core (50) also includes a valve core pressure plate (53) installed on the upper end of the cylinder body (51), and a seal is formed between the valve core pressure plate (53) and the valve core pressure plate (53).

6. The anti-fluctuation nuclear electric actuator valve according to claim 5, characterized in that, The sealing part (52) protrudes outward and is disposed on the outer circumferential surface of the cylinder body (51), and the outer diameter of the sealing part (52) is equal to the inner diameter of the valve cage (30); Or / and, the outer diameter of the valve core pressure plate (53) is equal to the inner diameter of the valve cage (30).

7. The anti-fluctuation nuclear electric actuator valve according to claim 1, characterized in that, The valve cage (30) includes an upper sleeve (31), a lower sleeve (32), and a valve seat (33); The upper sleeve (31) is connected to the lower sleeve (32), and the plurality of flow holes (320) include a plurality of first-stage throttling holes (321). The plurality of first-stage throttling holes (321) are arranged from top to bottom on the outer circumferential surface of the lower sleeve (32). The valve core (50) slides inside the lower sleeve (32). The lower sleeve (32) is installed on the valve seat (33). The valve seat (33) is installed inside the through hole (13). The valve seat (33) is provided with a connecting hole (330).

8. The anti-fluctuation nuclear electric actuator valve according to claim 7, characterized in that, The valve cage (30) further includes at least one outer sleeve (34), and the plurality of flow holes (320) further includes a plurality of second-stage throttling holes (340). The plurality of second-stage throttling holes (340) are opened from top to bottom on the outer circumferential surface of the at least one outer sleeve (34), and correspond one-to-one with the plurality of first-stage throttling holes (321). The outer circumferential surface of the lower sleeve (32) is provided with an annulus (322) from bottom to top, and the annulus (322) is respectively disposed between two adjacent layers of first-stage throttling holes (321). The at least one outer sleeve (34) is sleeved on the annulus (322).

9. The anti-fluctuation nuclear electric actuator valve according to claim 1, characterized in that, It also includes a drive assembly (60) mounted on the valve cover (20), the drive assembly (60) being connected to the valve stem (40) to drive the valve core (50) to move up and down within the valve cage (30).

10. The anti-fluctuation nuclear electric actuator valve according to claim 9, characterized in that, The drive assembly (60) includes a pneumatic assembly (61) and / or a manual assembly (62) and / or an electric assembly. The pneumatic assembly (61) and / or the manual assembly (62) and / or the electric assembly are respectively mounted on the valve cover (20). The pneumatic assembly (61) and / or the manual assembly (62) and / or the electric assembly are respectively connected to the valve stem (40) to drive the valve core (50) to move up and down through the valve stem (40).

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