Adjusting butterfly valve noise control device and nuclear power conventional island reheating system
By setting energy dissipation parts and sound absorbing parts in the valve body and combining the vibration absorber, the problem of poor noise suppression effect of butterfly valve is solved, and the safe and reliable operation and noise pollution control of conventional nuclear power island reheating systems are achieved.
Patent Information
- Application Number
- CN202510549333.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2025-07-22
AI Technical Summary
In the conventional island reheating system of nuclear power, the noise suppression method of butterfly valve is limited in effect, especially in high pressure and high flow conditions, and the traditional method increases maintenance costs and space occupation, affecting the stability and reliability of the system.
The energy dissipation parts and sound absorbing parts are arranged in the valve body, combined with the vibration absorber on the actuator, the turbulent kinetic energy of the fluid is reduced through the energy dissipation parts, the sound absorbing parts absorb high-frequency noise, and mechanical vibration is absorbed through the vibration absorber to reduce system vibration and noise.
It effectively reduces the noise pollution of conventional island reheating systems of nuclear power, improves the safety and reliability of the system, reduces equipment wear and aging, reduces maintenance costs, and optimizes space utilization.
Smart Images
Figure CN120351375A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of valves, and more specifically, to a regulating butterfly valve noise control device and a reheating system for a nuclear power conventional island. Background Art
[0002] Butterfly valves have good fluid control characteristics and closing and sealing characteristics, with small flow resistance, good flow capacity, and a large adjustable ratio, and are widely used in the regulating systems of reheating systems for nuclear power conventional islands. During actual operation, with the increasing unit installed capacity and to adapt to the rapid peak shaving of nuclear power units, during rapid start-up and shutdown processes, the fluid gushing out from the channel on the valve side will quickly impact the valve body, inevitably generating air flow disturbances and mechanical vibrations, resulting in the generation of noise, which has a negative impact on the long-term stability of the reheating system for the nuclear power conventional island, and may also cause problems such as equipment wear and aging, reducing the reliability and efficiency of the reheating system for the nuclear power conventional island.
[0003] Traditional butterfly valve noise suppression methods generally include installing noise silencers, using vibration damping devices, and adding sound-absorbing materials between the butterfly valve and the pipeline. However, although these methods can reduce noise to a certain extent, due to the complexity of the working environment of the butterfly valve and fluid flow, the effect of weakening noise is limited.
[0004] Therefore, how to effectively reduce noise pollution while ensuring the safe and reliable operation of the reheating system for the nuclear power conventional island has become a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention
[0005] In view of this, the purpose of the present application is to provide a regulating butterfly valve noise control device to effectively reduce noise pollution while ensuring the safe and reliable operation of the reheating system for the nuclear power conventional island.
[0006] Another purpose of the present application is to provide a reheating system for a nuclear power conventional island having the above-mentioned regulating butterfly valve noise control device.
[0007] To achieve the above purpose, the present application provides the following technical solutions:
[0008] A regulating butterfly valve noise control device, comprising:
[0009] A valve body, in which an energy dissipation member is arranged, a plurality of flow holes for fluid to pass through are defined on the energy dissipation member, and a sound-absorbing member is arranged on the inner wall of the valve body;
[0010] A valve plate, rotatably arranged in the valve body to control the flow rate of the fluid passing through;
[0011] The actuator is arranged outside the valve body, and the actuator is connected to the valve plate through a valve stem to drive the valve plate to rotate. A shock absorber is arranged on the actuator.
[0012] Optionally, in the above-mentioned regulating butterfly valve noise control device, a flow guiding component is arranged at the downstream port of the valve body. The flow guiding component includes a plurality of flow guiding plates, and one side of the flow guiding plate is provided with a parabolic flow guiding surface.
[0013] Optionally, in the above-mentioned regulating butterfly valve noise control device, a plurality of flow guiding holes are formed in the flow guiding surface, and the aperture of the flow guiding holes is 0.5 mm to 3 mm.
[0014] Optionally, in the above-mentioned regulating butterfly valve noise control device, the flow guiding plates are parallel to each other and are obliquely arranged at the downstream port of the valve body.
[0015] Optionally, in the above-mentioned regulating butterfly valve noise control device, the inclination angle of the flow guiding plate is 15° to 45°.
[0016] Optionally, in the above-mentioned regulating butterfly valve noise control device, the energy dissipating member is fixed on the valve plate so that the energy dissipating member rotates synchronously with the valve plate.
[0017] Optionally, in the above-mentioned regulating butterfly valve noise control device, the energy dissipating member is made of a high-temperature resistant alloy material, and the energy dissipating member is coated with an anti-corrosion coating for resisting steam corrosion.
[0018] Optionally, in the above-mentioned regulating butterfly valve noise control device, sound absorbing members are arranged at both the upstream port and the downstream port of the valve body, and the sound absorbing members are made of high-temperature ceramic fibers.
[0019] Optionally, in the above-mentioned regulating butterfly valve noise control device, the thickness of the sound absorbing member is 5 mm to 15 mm.
[0020] A nuclear power conventional island reheating system includes a pipeline system and the regulating butterfly valve noise control device as described in any one of the above. The pipeline system is connected to the valve body through a flange connecting member.
[0021] The noise control device for regulating butterfly valves provided in this application has an actuator connected to the valve plate through a valve stem, enabling the valve plate to be rotated by the actuator to adjust the flow rate of the fluid. Moreover, an energy dissipation component is arranged inside the valve body. After the fluid passes through the flow holes of the energy dissipation component installed inside the valve body, the turbulent kinetic energy of the fluid can be effectively weakened, avoiding direct impact on the valve plate. At the same time, when the fluid contacts the sound-absorbing component on the inner wall of the valve body, high-frequency noise can be effectively absorbed and the reflection of sound waves can be reduced. In addition, a shock absorber arranged on the actuator can absorb the mechanical vibration of the valve stem during this process, further reducing the overall vibration and noise during system operation. As can be seen from the above example, the noise control device for regulating butterfly valves provided in this application can effectively weaken the turbulent kinetic energy of the fluid through the energy dissipation component, avoid direct impact on the valve plate. At the same time, when the fluid contacts the sound-absorbing component on the inner wall of the valve body, high-frequency noise can be effectively absorbed and the reflection of sound waves can be reduced. And the mechanical vibration of the valve stem is absorbed by the shock absorber arranged on the actuator during this process, further reducing the overall vibration and noise during system operation, thereby effectively reducing noise pollution while ensuring the safe and reliable operation of the reheating system in the nuclear power conventional island.
[0022] The technical features mentioned above, the technical features to be mentioned below, and the technical features shown separately in the drawings can be combined with each other arbitrarily as long as the combined technical features are not contradictory. All feasible feature combinations are the technical contents clearly recorded in this article. Any one of the sub-features included in the same sentence can be applied independently without necessarily being applied together with other sub-features. Brief Description of the Drawings
[0023] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.
[0024] Figure 1 It is a schematic structural diagram of the noise control device for regulating butterfly valves provided in the embodiments of this application;
[0025] Figure 2 It is a schematic cross-sectional view of the noise control device for regulating butterfly valves provided in the embodiments of this application Figure 1 ;
[0026] Figure 3 It is a schematic cross-sectional view of the noise control device for regulating butterfly valves provided in the embodiments of this application Figure 2 ;
[0027] Figure 4Structural schematic diagram of the flow deflector provided by the embodiment of the present application.
[0028] Among them, 100 is the valve body, 101 is the energy dissipation component, 1011 is the flow hole, 102 is the sound absorption component, 103 is the flow guiding assembly, 1031 is the flow deflector, 1032 is the flow guiding surface, and 1033 is the flow guiding hole;
[0029] 200 is the valve plate;
[0030] 300 is the actuator, 301 is the valve stem, and 302 is the shock absorber;
[0031] 400 is the flange connection;
[0032] 500 is the pipeline system;
[0033] 600 is the fixed flange. Detailed implementation manners
[0034] The core of the present application is to provide a regulating butterfly valve noise control device to effectively reduce noise pollution while ensuring the safe and reliable operation of the reheating system of the nuclear power conventional island.
[0035] Another core of the present application is to provide a reheating system for a nuclear power conventional island with the above-mentioned regulating butterfly valve noise control device.
[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0037] Butterfly valves have good fluid control characteristics and closing and sealing characteristics, with small flow resistance, good flow capacity, and large adjustable ratio, and are widely used in the regulating systems of the reheating systems of nuclear power conventional islands. During the actual operation process, with the increasing unit installed capacity and to adapt to the rapid peak shaving of nuclear power units, during the rapid start-stop process, the fluid gushing out from the channel on the valve side will quickly impact the valve body, inevitably generating air flow disturbances and mechanical vibrations, resulting in the generation of noise, thereby having a negative impact on the long-term stability of the reheating system of the nuclear power conventional island, and may also cause problems such as equipment wear and aging, reducing the reliability and efficiency of the reheating system of the nuclear power conventional island.
[0038] Traditional methods for suppressing the noise of butterfly valves generally include installing noise mufflers, using shock-absorbing devices, and adding sound-absorbing materials between the butterfly valve and the pipeline. However, although these methods can reduce noise to a certain extent, due to the complexity of the working environment of the butterfly valve and the fluid flow, the effect of weakening noise is limited.
[0039] In addition, under different working conditions, the effects of traditional noise suppression measures vary greatly. Especially under extreme working conditions such as high pressure and large flow rate, the noise level is still relatively high. The installed mufflers and vibration damping devices may experience performance degradation over time, increasing the maintenance cost and making maintenance difficult. At the same time, traditional butterfly valve noise suppression methods require additional space, posing high requirements for the layout and floor area of the device, resulting in a large space occupation.
[0040] For this reason, as Figure 1 shown, an embodiment of the present application discloses a regulating butterfly valve noise control device, including a valve body 100, a valve plate 200, and an actuator 300. The energy dissipation member 101 in the valve body 100 effectively weakens the turbulent kinetic energy of the fluid, avoiding direct impact on the valve plate 200. At the same time, the fluid contacts the sound-absorbing member 102 on the inner wall of the valve body 100, which can effectively absorb high-frequency noise and reduce the reflection of sound waves. And the vibration damper 302 provided on the actuator 300 absorbs the mechanical vibration of the valve stem 301 during this process, further reducing the overall vibration and noise of the system operation, so as to effectively reduce noise pollution while ensuring the safe and reliable operation of the reheating system of the nuclear power conventional island.
[0041] Next, the regulating butterfly valve noise control device disclosed in the embodiments of the present application will be specifically explained and described in conjunction with Figures 1 to 3 this.
[0042] Among them, as Figure 1 shown, a valve plate 200 is provided in the valve body 100, and the valve plate 200 can rotate in the valve body 100 to adjust the angle of the valve plate 200, thereby controlling the flow rate of the fluid passing through the valve body 100. At the same time, the actuator 300 is arranged outside the valve body 100, and the actuator 300 is connected to the valve plate 200 through the valve stem 301, so that the valve plate 200 can be driven to rotate by rotating the actuator 300 to achieve the control of the fluid passing flow rate.
[0043] To reduce the noise generated by the fluid, as Figure 1As shown in the figure, an energy dissipation component 101 can be arranged inside the valve body 100, and the energy dissipation component 101 can be fixed inside the valve body 100 by bolts or buckles. At the same time, an elastic sealing ring can be used to ensure the sealing performance of the installation, so as to ensure the stable operation of the regulating butterfly valve noise control device under high temperature and high pressure conditions. Moreover, a plurality of uniformly distributed flow holes 1011 are formed on the energy dissipation component 101, so that the fluid can pass through the flow holes 1011, avoiding direct impact on the valve plate 200, and can uniform the flow of fluids such as steam and significantly reduce the turbulence intensity in the pipeline system 500, thereby optimizing the flow of fluids such as steam and reducing the turbulence noise. In addition, a sound-absorbing component 102 is arranged on the inner wall of the valve body 100, so that the fluid can contact with the sound-absorbing component 102 on the inner wall of the valve body 100, effectively absorbing high-frequency noise and reducing the reflection of sound waves, reducing the overall noise level of the reheating system, and thus improving the operating environment of the reheating regulation system of the nuclear power conventional island.
[0044] As Figure 2 shown, the energy dissipation component 101 can be fixed on the valve plate 200, so that the energy dissipation component 101 can rotate synchronously with the valve plate 200, thereby optimizing the flow of fluids such as steam and reducing the turbulence noise while controlling the flow rate of the fluid passing through.
[0045] Exemplarily, the material of the energy dissipation component 101 can be a high-temperature resistant alloy material, and the surface of the energy dissipation component 101 is coated with an anti-corrosion coating that can resist steam corrosion to ensure the strength and service life of the energy dissipation component 101. At the same time, the energy dissipation component 101 can be welded to the valve plate 200. Optionally, the energy dissipation component 101 can be a nickel-based superalloy, such as Inconel 625 or Hastelloy C276, etc., or a cobalt-based superalloy or an iron-based superalloy, etc.
[0046] As Figure 2 shown, sound-absorbing components 102 can be arranged at both the upstream port and the downstream port of the valve body 100. The sound-absorbing components 102 can be made of a high-temperature corrosion-resistant sound-absorbing material that can absorb common noise frequencies. Optionally, the material of the sound-absorbing component 102 can be high-temperature ceramic fiber, making it have excellent high-temperature resistance and corrosion resistance to ensure long-term stable operation. At the same time, the sound-absorbing component 102 can adopt an annular structure and be attached to the inner walls of the upstream port and the downstream port of the valve body 100. Moreover, the thickness of the sound-absorbing component 102, that is, the width along the axial direction, can be 5 mm to 15 mm. While ensuring the noise absorption effect, it can reduce the material consumption of the sound-absorbing component 102, save costs, and improve the installation convenience. When fluids such as steam flow through the inner wall of the valve body 100, they will contact the sound-absorbing component 102, so that the noise will be absorbed by the sound-absorbing component 102, reducing the reflection and propagation of sound waves.
[0047] Exemplarily, the sound-absorbing member 102 may include a substrate layer and a sound-absorbing material layer. Among them, the substrate layer may adopt a ceramic substrate with high temperature resistance and corrosion resistance, which can provide structural support and ensure long-term stability. At the same time, the sound-absorbing material layer may adopt high-temperature resistant materials such as ceramic fibers, metal fiber felts or porous metal plates, so that the sound-absorbing member 102 can withstand temperatures up to 600°C to 1000°C, enabling it to withstand the high-temperature and high-pressure conditions in the nuclear power plant environment. Moreover, by optimizing the thickness of the sound-absorbing material layer, the pore diameter, porosity and material density of the porous-structured sound-absorbing material layer, the sound-absorbing member 102 can have a good sound energy attenuation effect in the high-frequency band above 1000 Hz. Optionally, the thickness of the sound-absorbing material layer can be adjusted and optimized within the range of 5 mm to 15 mm according to different fluid flow rates and pressures, so as to reduce the flow resistance while maximizing noise reduction.
[0048] In the above embodiment, the sound-absorbing member 102 can adopt a modular splicing method for easy maintenance and replacement, reducing downtime. Moreover, the sound-absorbing member 102 can be arranged not only at the upstream and downstream ports of the valve body 100, but also in other areas with high flow rate and high turbulence inside the valve body 100. And the sound-absorbing member 102 can be installed and fixed on the inner wall of the valve body 100 by welding or bonding with high-temperature heat-resistant glue to ensure long-term stability.
[0049] To further reduce the mechanical vibration noise caused by the flow of fluids such as steam, as Figure 1 shown, a shock absorber 302 is provided on the actuator 300. Optionally, the shock absorber 302 can adopt a dynamic shock absorber, such as an undamped dynamic shock absorber, a friction shock absorber or a damped shock absorber, etc. When the actuator 300 is subjected to mechanical vibration caused by the flow of fluids such as steam, the auxiliary mass block in the shock absorber 302 will vibrate following the connection with the actuator 300. Through the elastic element and damping element of the shock absorber 302, the inertial force, elastic force and damping force generated by the vibration of the auxiliary mass block are offset or weakened with the exciting force of the actuator 300, so as to achieve the purpose of reducing the vibration of the actuator 300.
[0050] Exemplarily, the shock absorber 302 may be composed of a high-strength alloy and an elastic damping material, and the strength of the elastic damping material can be adjusted to adapt to different working conditions. When the vibration is transmitted to the shock absorber 302 through the valve stem 301, it can be absorbed by the internal elastic damping material, reducing the amplitude of mechanical vibration transmitted to the valve body 100.
[0051] As Figure 1 shown, a flow guiding assembly 103 is provided at the downstream port of the valve body 100, and the flow guiding assembly 103 may include a plurality of flow guiding plates 1031. At the same time, a parabolic flow guiding surface 1032 is provided on one side of the flow guiding plate 1031, so that the fluid can flow smoothly through the parabolic flow guiding surface 1032. In addition, as Figure 4As shown, a plurality of diversion holes 1033 are formed in the diversion surface 1032, and the aperture of the diversion holes 1033 can be 0.5 mm to 3 mm, so that part of the fluid can pass through the diversion holes 1033, thereby effectively dispersing the flow of high-energy steam and other fluids and attenuating the propagation of sound waves.
[0052] Exemplarily, as Figure 2 shown, each of the baffle plates 1031 can be arranged in parallel and inclined at the downstream port of the valve body 100, so as to divert fluids such as steam, and effectively disperse the flow of high-energy steam and other fluids. Optionally, the inclination angle α of the baffle plate 1031 can be 15° to 45°. It should be noted that the inclination angle α of the baffle plate 1031 refers to the included angle between the baffle plate 1031 and the horizontal plane.
[0053] The embodiment of the present application also discloses a reheating system for a nuclear power conventional island, including a pipeline system 500 and the regulating butterfly valve noise control device disclosed in the above embodiment. Therefore, the reheating system for the nuclear power conventional island has all the technical effects of the above regulating butterfly valve noise control device, which will not be elaborated herein. Among them, as Figure 2 and Figure 3 shown, the pipeline system 500 can be connected to the valve body 100 through a flange connector 400. At the same time, a fixed flange 600 is provided on the valve body 100 to facilitate the installation and fixation of the valve body 100.
[0054] In this application, by installing the modular-designed regulating butterfly valve noise control device in the reheating system of the nuclear power conventional island, through the close cooperation of each component, comprehensive control of noise and vibration can be jointly achieved. During the regulation process of the reheating system of the nuclear power conventional island, when steam enters the valve body 100 from the upstream port of the valve body 100 and passes through the flow holes 1011 of the energy dissipation component 101, the high-pressure steam is dispersed into fine streams when passing through the holes, which can ensure the uniformity of steam flow and achieve the effect of reducing the turbulence intensity, avoid the direct impact of steam on the valve plate 200, and effectively reduce the generation of noise. In addition, when the steam flows through the inner wall of the valve body 100, it contacts the sound-absorbing component 102 attached to the inner surface of the valve body 100, enabling the sound-absorbing component 102 to absorb the high-frequency noise generated by steam flow and reduce the reflection and propagation of sound waves, thereby ensuring that the noise level inside the valve body 100 meets the nuclear power plant noise control standard. Moreover, during the process of the valve stem 301 transmitting vibration to the valve body 100, the shock absorber 302 can absorb mechanical vibration through the internal elastic damping material, effectively weakening the vibration wave generated during the operation due to steam pressure changes or the rapid opening and closing of the actuator 300, thereby improving the operation stability of the system and extending the service life of the equipment at the same time. When the steam passes through the valve body 100 and enters the downstream flow guiding component 103, the flow guiding plate 1031 in the flow guiding component 103 can further weaken the kinetic energy of the fluid and at the same time guide the steam direction to disperse the kinetic energy. And the flow guiding holes 1033 on the flow guiding surface 1032 can attenuate the propagation of the remaining sound waves, thereby significantly reducing the noise generated by steam flow.
[0055] The terms "first" and "second" etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may include steps or units not listed.
[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A regulating butterfly valve noise control device, characterized in that, Comprising: A valve body (100), within which an energy dissipation member (101) is provided. Multiple flow holes (1011) for fluid to pass through are defined on the energy dissipation member (101), and a sound absorption member (102) is provided on the inner wall of the valve body (100); A valve plate (200), rotatably arranged within the valve body (100) to control the flow rate of the fluid passing through; An actuator (300), arranged outside the valve body (100), and the actuator (300) is connected to the valve plate (200) through a valve stem (301) to drive the valve plate (200) to rotate. A shock absorber (302) is provided on the actuator (300).
2. The noise control device for regulating butterfly valve according to claim 1, characterized in that A flow guiding assembly (103) is provided at the downstream port of the valve body (100). The flow guiding assembly (103) includes multiple flow guiding plates (1031), and a parabolic flow guiding surface (1032) is provided on one side of the flow guiding plate (1031).
3. The noise control device for the regulating butterfly valve according to claim 2, characterized in that, Multiple flow guiding holes (1033) are formed on the flow guiding surface (1032), and the aperture of the flow guiding hole (1033) is 0.5 mm to 3 mm.
4. The noise control device for the regulating butterfly valve according to claim 2, characterized in that, Each of the flow guiding plates (1031) is parallel to each other and is inclined and arranged at the downstream port of the valve body (100).
5. The noise control device for the regulating butterfly valve according to claim 4, characterized in that, The inclination angle of the flow guiding plate (1031) is 15° to 45°.
6. The noise control device for regulating butterfly valve according to claim 1, wherein The energy dissipation member (101) is fixed to the valve plate (200) so that the energy dissipation member (101) rotates synchronously with the valve plate (200).
7. The noise control device for regulating butterfly valves according to claim 1, characterized in that, The material of the energy dissipation member (101) is a high-temperature resistant alloy material, and the energy dissipation member (101) is coated with an anti-corrosion coating for resisting steam corrosion.
8. The noise control device for regulating a butterfly valve according to claim 1, wherein The sound absorption member (102) is provided at both the upstream port and the downstream port of the valve body (100), and the material of the sound absorption member (102) is high-temperature ceramic fiber.
9. The noise control device for regulating butterfly valve according to claim 1, wherein, The thickness of the sound absorption member (102) is 5 mm to 15 mm.
10. A reheating system for a nuclear power conventional island, characterized in that, Comprising a pipeline system (500) and a regulating butterfly valve noise control device according to any one of claims 1 to 9. The pipeline system (500) is connected to the valve body (100) through a flange connector (400).