Spiral-flow type variable flow resistance low-noise adjusting ball valve and mounting and using method thereof

Abstract

The invention discloses a spiral-flow type variable-flow-resistance low-noise adjusting ball valve and a mounting and using method thereof. The ball valve comprises a valve body (1), an adjusting type valve seat assembly (2), a valve element ball assembly (3) and a valve rod assembly (4). The valve body (1) is provided with a first valve body flow channel (1a) and a second valve body flow channel (1b), and the inner end of the first valve body flow channel (1a) and the inner end of the second valve body flow channel (1b) are each provided with an adjustable valve seat assembly (2). The valve element ball assembly (3) is arranged in an inner cavity between the adjusting type valve seat assemblies (2), and the surface of the valve element ball assembly (3) makes contact with the sealing faces of the adjusting type valve seat assemblies (2). A multi-layer throttling hole throttling disc (3a) and a rotary throttling groove throttling disc (3b) which are independent of each other and can be replaced and detached are arranged in a flow channel of the valve element ball assembly (3). According to the ball valve, the adjustability and low-noise adjustment of the flow resistance of the valve are achieved through the combination of the design of the multiple layers of throttling discs and the liquid spiral cavity.

Description

Technical Field

[0001] The present invention belongs to the technical field of fluid control valves, and more specifically, relates to a swirl-type variable flow resistance low-noise regulating ball valve and its installation and use methods. Background Art

[0002] In a ship pipeline system, fluid resistance is a crucial performance parameter. The pipeline system of a ship usually needs to be precisely designed and optimized to ensure the efficient operation of the system, especially in coordination with dynamic equipment such as pumps. Fluid resistance directly affects the operating efficiency of various equipment in the system. If the fluid resistance is too large, it may lead to an increase in the power demand of the pump, thereby affecting the energy efficiency performance of the ship. To optimize the selection of dynamic equipment such as pumps, the existing ship pipeline system usually achieves reasonable regulation by controlling the limit value of the maximum flow resistance of the valve. However, under certain specific working conditions, the ship pipeline system needs to achieve a two-way regulation function to adapt to changes in different flow rates and pressures, and traditional regulating valves have certain limitations in this regard. Especially for existing regulating ball valves, the limit value of their maximum flow resistance cannot be adjusted, and they cannot dynamically adapt to the resistance fluctuations of the system, resulting in insufficient regulating performance, and even in some cases, adverse reactions such as noise and vibration, thus affecting the working reliability.

[0003] A ball valve is a commonly used fluid control component, widely used in ship pipelines, industrial pipelines, and other fluid control systems. Its working principle is to control the flow rate and flow direction of the fluid through a rotating sphere. The advantages of a ball valve are good sealing performance, rapid and reliable opening and closing, and it is suitable for various fluid media. However, traditional regulating ball valves are mainly used for single-direction fluid flow regulation, and their design focuses on providing relatively stable flow control. Existing regulating ball valves usually control the flow rate by rotating angle, and the relationship between the rotating angle and the flow rate is relatively simple, which can meet the flow rate regulation requirements within a certain range. But with the progress of technology and the change of requirements, especially in the ship pipeline system, the requirement for the valve to adapt to two-way flow and dynamically compensate for changes in fluid resistance is increasing. This requirement has promoted the further improvement of regulating ball valves. Some manufacturers have tried to improve the regulating performance by changing the sphere structure, valve body design, etc. In the prior art, some ball valve products have begun to be equipped with a rotating mechanism with a wider adjustment range and a more precise flow control system in order to achieve a more refined regulating function under specific working conditions.

[0004] Although the existing ball valve technology has achieved certain results in unidirectional regulation, there are still many problems in bidirectional regulation and dynamic compensation. Specifically, they are as follows: (1) In most designs of existing regulating ball valves, the maximum flow resistance limit is fixed. This means that during operation, the valve cannot automatically adjust its own flow resistance characteristics to adapt to the dynamic changes of the system. Especially for occasions such as ship piping systems that require precise control of fluid flow and pressure, the fixed flow resistance limit may cause the selection of dynamic equipment such as pumps to not match the actual needs, thereby reducing system efficiency. (2) Most traditional regulating ball valves can only regulate unidirectional fluid flow. In ship piping systems, the fluid may flow in reverse or the flow rate may fluctuate. Especially in the case of pressure balance or fluid backflow, the existing ball valve cannot provide effective bidirectional flow regulation. Therefore, the regulation ability of traditional ball valves under complex working conditions is severely limited and it is difficult to meet the needs of ship piping systems. (3) Existing ball valves are generally unable to compensate for the dynamic changes of fluid resistance in the system in real time. For example, as the flow, pressure or temperature changes, the resistance of the pipeline system will also change. The existing regulating ball valve does not have sufficient flexibility to dynamically adjust the flow resistance characteristics of the valve, resulting in unstable regulation effect. Especially in the case of large flow fluctuations, the regulating performance of the valve may fail. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a swirl-type variable flow resistance low-noise regulating ball valve and its installation and use method, which realizes the adjustability and low-noise regulation of the valve flow resistance through the combination of multi-layer throttling discs and liquid spiral chamber design. Specifically, the multi-layer throttling discs are used to gradually reduce the pressure drop, avoid cavitation and reduce noise. At the same time, by controlling the position of the throttling holes / rotating guide grooves on adjacent throttling discs and the size of the spiral chamber, a liquid spiral chamber is formed to dissipate fluid energy and effectively improve the flow resistance regulation accuracy, solving the problem of the valve flow resistance being unadjustable in the prior art, and being able to dynamically adjust the flow rate and flow resistance according to actual working conditions, thereby improving the regulation performance and system adaptability.

[0006] To achieve the above object, according to one aspect of the present invention, a swirl type variable flow resistance low noise regulating ball valve is provided, comprising a valve body, a regulating valve seat assembly symmetrically arranged axially with the valve body, a valve core ball assembly arranged between the regulating valve seat assemblies, and a valve stem assembly arranged on the valve core ball assembly; wherein,

[0007] The valve body is provided with a first valve body flow channel and a second valve body flow channel, and inner ends of the first valve body flow channel and the second valve body flow channel are respectively installed with adjustable valve seat assemblies;

[0008] The valve core ball assembly is arranged in the inner cavity between the regulating valve seat assemblies, and its surface contacts the sealing surface of the regulating valve seat assembly;

[0009] In the flow channel of the valve core ball assembly, there are independent and replaceable and detachable multi-layer throttle hole throttle discs and rotary throttle groove throttle discs. By controlling the positions of adjacent throttle hole throttle discs and rotary throttle groove throttle discs and the size of the spiral cavity, a liquid spiral cavity is formed to achieve the adjustability of the valve flow resistance and low-noise regulation.

[0010] Furthermore, the valve core ball assembly includes a snap ring, which firmly fixes the throttle hole throttle disc and the rotary throttle groove throttle disc in a predetermined position through the cooperation with the inner cavity of the valve core ball assembly.

[0011] Furthermore, the valve core ball assembly includes a valve core ball base body, and the throttle hole throttle disc and the rotary throttle groove throttle disc are arranged opposite to the valve core ball base body through the valve core ball base body.

[0012] Furthermore, the valve core ball assembly includes a valve core ball channel arranged on the outer periphery of the valve core ball base body.

[0013] Furthermore, the regulating valve seat assembly includes a first valve body sealing O-ring, and the first valve body sealing O-ring forms a seal between the valve body and the regulating valve seat assembly.

[0014] Furthermore, the regulating valve seat assembly includes a second valve core ball sealing O-ring, and the second valve core ball sealing O-ring forms a seal between the valve core ball assembly and the regulating valve seat assembly.

[0015] Furthermore, the regulating valve seat assembly includes a regulating valve seat base body arranged between the first valve body sealing O-ring and the second valve core ball sealing O-ring.

[0016] Furthermore, the regulating valve seat assembly includes a regulating window arranged at the center of the regulating valve seat base body.

[0017] According to the second aspect of the present invention, there is provided an installation method of the swirl-type variable flow resistance low-noise regulating ball valve as described above, including:

[0018] S100: Before installation, ensure that the valve and the pipeline system are clean and free of impurities, and check the integrity of the snap ring, the throttle hole throttle disc and the rotary guide groove throttle disc;

[0019] S200: Place the throttle hole throttle disc and the rotary guide groove throttle disc in the flow channel of the valve core ball assembly according to the design requirements, ensure that the installation angles and axial positions of the throttle hole throttle disc and the rotary guide groove throttle disc conform to the design specifications, and install the snap ring back to its original position to ensure that the throttle disc is firmly fixed;

[0020] S300: During the installation of the regulating valve seat assembly, check the integrity of the first valve body sealing O-ring and the second valve core ball sealing O-ring, and place them correctly in the corresponding positions of the valve seat base to ensure the sealing performance;

[0021] S400: Install the regulating valve seat assembly to the corresponding position of the valve body, ensure that it fits well with the valve core ball assembly, and the shape and size of the regulating window on the regulating valve seat base meet the required flow regulation characteristics;

[0022] S500: Connect the ball valve to the pipeline system through the valve core ball channel to ensure that the connection is tight and secure without leakage risk;

[0023] S600: After installation, debug and test the ball valve to ensure that its performance under different working conditions meets the design requirements, check the two-way throttling adjustment function, and ensure that the valve can achieve the expected flow regulation characteristics in both forward and reverse flows.

[0024] According to a third aspect of the present invention, there is provided a method for using the swirl type variable flow resistance low noise regulating ball valve, comprising the following steps:

[0025] Step 1: The medium enters from the first valve body flow channel port or the second valve body flow channel port, passes through the adjustable valve seat assembly and enters the valve core ball assembly;

[0026] Step 2: When the medium flows through the throttling disc in the valve core ball assembly, it is throttled through the throttling hole throttling disc, the rotating throttling groove throttling disc and the "liquid spiral cavity" between the throttling hole throttling disc and the rotating throttling groove throttling disc, thereby achieving the adjustability of the valve flow resistance and low-noise adjustment.

[0027] In general, the above technical solution conceived by the present invention has the following technical advantages compared with the prior art:

[0028] 1. The ball valve of the present invention realizes the adjustability and low-noise regulation of valve flow resistance through the combination of multi-layer throttling disc and liquid spiral cavity design. The multi-layer throttling disc is used to reduce the pressure drop step by step, avoid cavitation and reduce noise. At the same time, by controlling the position of the throttling holes / rotating guide grooves on adjacent throttling discs and the size of the spiral cavity, a liquid spiral cavity is formed to dissipate fluid energy, effectively improve the flow resistance regulation accuracy, solve the problem of non-adjustable valve flow resistance in the prior art, and can dynamically adjust the flow rate and flow resistance according to actual working conditions, thereby improving the regulation performance and system adaptability.

[0029] 2. The ball valve of the present invention arranges multiple layers of throttling discs in the valve core ball channel. The pressure drop of the medium is reduced step by step when passing through the throttling discs. The pressure drop of each stage is not enough to produce cavitation, thereby realizing multi-stage throttling noise reduction. Different flow resistance values ​​can be achieved through different combinations of throttling discs, thereby realizing adjustable flow resistance under the premise of the same specification and model. In addition, the modular throttling disc assembly realizes modular replacement, which reduces the difficulty of maintenance.

[0030] 3. In the ball valve of the present invention, the throttling holes / rotating guide grooves on adjacent throttling discs are not on the same axis, so that a liquid spiral cavity is formed in the space between adjacent throttling discs, thereby dissipating fluid energy. By controlling the bending angle of the rotating guide groove on the throttling disc and the size of the spiral chamber, better throttling and flow resistance control can be achieved, filling the technical gap in the prior art that the flow resistance value of the valve cannot be changed.

[0031] 4. The ball valve of the present invention can realize the function of bidirectional throttling adjustment by combining the throttling discs, and can be installed freely in the forward and reverse directions, thus solving the technical problem that the regulating valves in the prior art all have flow direction requirements for installation.

[0032] 5. The ball valve of the present invention, under the premise of the same specifications and models, can provide throttling disc combinations with different flow rates and pressure difference values, which can conveniently and quickly meet the needs of users with different valve resistance values. The same specification and size can have more than ten maximum flow resistance limits to choose from.

[0033] 6. The ball valve of the present invention has a spiral cavity design between two adjacent throttling discs, which increases the throttling area while ensuring the same flow resistance value, reduces the flow velocity of the medium, increases the back pressure at the throttling hole, and greatly extends the regulating life of the valve. Under certain conditions, the valve can work for more than 10 years without obvious changes in the flow resistance limit.

[0034] 7. In the ball valve of the present invention, an interference fit is adopted between the throttling disc and the valve core ball channel. The design of the axial positioning groove in the valve core ball channel allows the user to quickly and conveniently adjust the staggered angles of the throttling holes of different throttling discs and the distance between the throttling discs to realize the adjustment and control of different flow resistance values.

[0035] 8. The O-ring seal on the regulating valve seat of the ball valve of the present invention can enhance the sealing performance between the valve seat and the valve body and the valve core ball, and O-rings with different temperature resistance ranges can be selected according to the medium temperature. This structural design makes the medium of the present invention applicable to a wider temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a swirl type variable flow resistance low noise regulating ball valve according to an embodiment of the present invention;

[0037] Figure 2 Schematic diagram of the flow channel layout of the valve core ball in an embodiment of the present invention;

[0038] Figure 3 is a schematic diagram of a liquid spiral cavity formed between throttling discs in an embodiment of the present invention;

[0039] Figure 4 Schematic diagram of a regulating valve realizing a bidirectional throttling regulating function in an embodiment of the present invention;

[0040] Figure 5 Schematic diagram of the structure of the regulating valve seat in an embodiment of the present invention;

[0041] Figure 6 is a schematic diagram of the structure of the adjustment window in an embodiment of the present invention;

[0042] Figure 7 It is a schematic flow chart of a swirl-type variable flow resistance low-noise adjustment method in an embodiment of the present invention.

[0043] In all the drawings, the same figure marks represent the same technical features, specifically: 1-valve body; 1a-first valve body flow channel; 1b-second valve body flow channel; 2-adjustable valve seat assembly; 2a-first valve body sealing O-ring; 2b-second valve core ball sealing O-ring; 2c-adjustable valve seat base; 2d-adjusting window; 3-valve core ball assembly; 3a-throttling hole throttling disc; 3b-rotating throttling groove throttling disc; 3c-retaining ring; 3d-valve core ball base; 3e-valve core ball channel; 4-valve stem assembly. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] Example 1

[0046] like Figure 1As shown, an embodiment of the present invention provides a swirl type variable flow resistance low noise regulating ball valve, which includes a valve body 1, a regulating valve seat assembly 2 symmetrically arranged axially with the valve body 1, a valve core ball assembly 3 arranged between the regulating valve seat assemblies 2, and a valve stem assembly 4 arranged on the valve core ball assembly 3. Among them, the valve body 1 is provided with a first valve body flow channel 1a and a second valve body flow channel 1b, and the inner ends of the first valve body flow channel 1a and the second valve body flow channel 1b are respectively installed with a regulating valve seat assembly 2, and the two regulating valve seat assemblies 2 are coaxially arranged, the valve core ball assembly 3 is arranged in the inner cavity of the valve body 1 and installed between the two regulating valve seat assemblies 2, the surface of the valve core ball 3 is in contact with the sealing surface of the regulating valve seat assembly 2, and the flow channel of the valve core ball assembly 3 is provided with mutually independent and replaceable multi-layer throttling hole throttling disc 3a and rotating throttling groove throttling disc 3b. The ball valve of the present invention realizes the adjustability and low-noise regulation of valve flow resistance through the combination of multi-layer throttling disc and liquid spiral cavity design. The multi-layer throttling disc is used to gradually reduce the pressure drop, avoid cavitation and reduce noise. At the same time, by controlling the position of the throttling holes / rotating guide grooves on adjacent throttling discs and the size of the spiral cavity, a liquid spiral cavity is formed to dissipate fluid energy, effectively improve the flow resistance regulation accuracy, solve the problem of non-adjustable valve flow resistance in the prior art, and can dynamically adjust the flow rate and flow resistance according to actual working conditions, thereby improving the regulation performance and system adaptability.

[0047] like Figure 2As shown, in the swirl type variable flow resistance low noise regulating ball valve of the present invention, the valve core ball assembly 3 includes a throttling hole throttling disc 3a, a rotating throttling groove throttling disc 3b, a snap ring 3c, a valve core ball base 3d and a valve core ball channel 3e. Among them, the surface of the valve core ball assembly 3 is connected with the throttling hole throttling disc 3a and the rotating throttling groove throttling disc 3b by interference fit, and the snap ring 3c is matched with the inner cavity of the valve core ball assembly 3 to firmly fix the throttling hole throttling disc 3a and the rotating throttling groove throttling disc 3b in a predetermined position to ensure that they will not be displaced or loosened during the operation of the valve. This design not only improves the reliability of the valve, but also reduces the risk of failure caused by improper installation of the throttling disc. In addition, the surface of the valve core ball assembly 3 is connected with the throttling hole throttling disc 3a and the rotating throttling groove throttling disc 3b by interference fit, and the elastic deformation of the material is used to achieve a tight connection by making the size of the connecting component slightly larger than the size of the matching component. In the present invention, the interference fit ensures the rapid circumferential positioning of the throttling disc in the valve core ball assembly 3, avoiding the rotation or displacement of the throttling disc during operation. Through the interference fit, a stable connection is formed between the throttling disc and the valve core ball assembly 3, ensuring the stability and reliability of the throttling disc during the operation of the valve. This connection method not only improves the sealing performance of the valve, but also enhances its ability to resist vibration and impact, and is suitable for applications under various complex working conditions. The ball valve of the present invention, by arranging multiple layers of throttling discs in the valve core ball channel, the pressure drop of the medium is reduced step by step when passing through the throttling disc, and the pressure drop of each stage is not enough to produce cavitation, thereby realizing multi-stage throttling noise reduction, and different flow resistance values ​​can be achieved through different combinations of throttling discs, realizing adjustable flow resistance under the premise of the same specification and model. In addition, the modular throttling disc assembly realizes modular replacement, reducing the difficulty of maintenance.

[0048] like Figure 3As shown, the flow channel space between the throttling disc 3a of the throttling hole and the throttling disc 3b of the rotating guide groove in the flow channel of the valve core ball assembly 3 forms a "liquid spiral chamber" to achieve energy dissipation and then change the flow resistance. Among them, the "liquid spiral chamber" refers to the fluid moving along the trajectory of the spiral line when flowing in the spiral channel. In the present invention, the flow channel space between the throttling disc 3a of the throttling hole and the throttling disc 3b of the rotating guide groove is designed in a spiral shape so that the fluid flows along the spiral path to form a liquid spiral chamber. The design of the liquid spiral chamber makes the flow path of the fluid inside the valve complicated, the flow rate gradually decreases, and the kinetic energy of the fluid is effectively dissipated. This design not only reduces the flow noise and vibration, but also improves the accuracy of flow resistance adjustment. By adjusting the size and shape of the spiral chamber, the flow resistance can be accurately controlled to meet the flow regulation requirements under different working conditions. In addition, the design of the liquid spiral chamber also effectively avoids the occurrence of cavitation. In traditional valve design, the high-speed flow of the fluid may cause a decrease in local pressure, generate bubbles, and then cause cavitation, which damages the valve structure. The liquid spiral cavity reduces the decrease in local pressure by reducing the flow rate, avoids the occurrence of cavitation, and improves the reliability and service life of the valve. When the liquid flows in the spiral cavity, it is affected by centrifugal force, the kinetic energy of the fluid is gradually dissipated, the flow rate is reduced, and the flow becomes more stable. This energy dissipation mechanism effectively reduces the kinetic energy of the fluid, reduces the flow noise and vibration, and improves the adjustment accuracy of the valve. In addition, the throttling holes / rotating guide grooves on adjacent throttling discs are not on the same axis, so that a liquid spiral cavity is formed in the space between adjacent throttling discs, thereby dissipating the fluid energy. By controlling the bending angle of the rotating guide groove on the throttling disc and the size of the spiral chamber, better throttling and flow resistance control can be achieved, filling the technical gap in the prior art that the flow resistance value of the valve cannot be changed. The ball valve of the present invention, the design of the spiral cavity between two adjacent throttling discs, increases the throttling area under the premise of ensuring the same flow resistance value, reduces the flow rate of the medium, increases the back pressure at the throttling hole, and greatly extends the adjustment life of the valve. Under certain conditions, it can work for more than 10 years without obvious changes in the flow resistance limit.

[0049] like Figure 4As shown, the regulating valve seat assembly 2 includes a first valve body sealing o-ring 2a, a second valve core ball sealing o-ring 2b and a regulating valve seat base 2c. Among them, an adjusting window 2d is provided at the center of the regulating valve seat base 2c, and the adjusting window 2d can be processed into different shapes as needed. By replacing the regulating valve seat base 2c, a variety of different regulating flow characteristics can be obtained. When the regulating ball valve in the example of the present invention has a two-way throttling regulating function, by placing different valve seats at the first valve body flow channel 1a and the second valve body flow channel 1b, the function of different forward and reverse flow characteristics under the same throttling regulating performance can be achieved. When the regulating ball valve of the present invention has a two-way throttling regulating function, by placing different valve seats at the first valve body flow channel 1a and the second valve body flow channel 1b, the function of different forward and reverse flow characteristics under the same throttling regulating performance can be achieved. This design allows the valve to maintain good regulating performance in the case of two-way flow and meet the requirements of complex working conditions.

[0050] like Figure 5 and Figure 6 As shown, the first valve body sealing o-ring 2a on the regulating valve seat assembly 2 forms a seal between the valve body 1 and the regulating valve seat assembly 2; the second valve core ball sealing o-ring 2b on the regulating valve seat assembly 2 forms a seal between the valve core ball assembly 3 and the regulating valve seat assembly 2, and the first valve body sealing o-ring 2a and the second valve core ball sealing o-ring 2b are preferably fluoroether o-rings, and the long-term working temperature range can be between -40°C and 300°C. The first valve body sealing o-ring 2a and the second valve core ball sealing o-ring 2b ensure the sealing performance of the valve during operation. It is preferred to use fluoroether O-rings, whose long-term working temperature range can be between -40°C and 300°C, which adapts to the needs of different working environments. This sealing design effectively prevents medium leakage and improves the reliability and safety of the valve.

[0051] Example 2

[0052] like Figure 7 As shown, in another embodiment of the present invention, a method for installing a swirl type variable flow resistance low noise regulating ball valve is provided, comprising the following steps:

[0053] S100: Preparation: Before installation, ensure that the valve and the piping system are clean and free of impurities. Check that all valve components are intact, especially the integrity of the retaining ring 3c and the throttling disc 3a of the throttling hole and the throttling disc 3b of the rotating guide groove;

[0054] S200: Install the throttle disc: place the throttle disc 3a of the throttle hole and the throttle disc 3b of the rotating guide groove in the flow channel of the valve core ball assembly 3 according to the design requirements, ensure that the installation angle and axial position of the throttle disc 3a of the throttle hole and the throttle disc 3b of the rotating guide groove meet the design specifications, and then install the clamping ring 3c back to its original position to ensure that the throttle disc is firmly fixed;

[0055] S300: Sealing installation: During the installation of the regulating valve seat assembly 2, first check the integrity of the first valve body sealing O-ring 2a and the second valve core ball sealing O-ring 2b, and correctly place them at the corresponding positions of the valve seat base 2c to ensure the sealing performance;

[0056] S400: Installation of valve seat assembly: Install the regulating valve seat assembly 2 to the corresponding position of the valve body 1, ensuring good cooperation with the valve core ball assembly 3. During the installation process, pay attention to the shape and size of the regulating window 2d on the regulating valve seat base to meet the required flow regulation characteristics;

[0057] S500: Connect the pipeline: Connect the ball valve to the pipeline system through the valve core ball channel 3e, ensuring that the connection is tight and secure without leakage risk;

[0058] S600: Debugging and testing: After installation, the ball valve is debugged and tested to ensure that its performance under different working conditions meets the design requirements, especially to check the two-way throttling adjustment function to ensure that the valve can achieve the expected flow regulation characteristics in both forward and reverse flows.

[0059] The design of the valve core ball assembly 3 of the present invention adopts a method of quickly axially positioning the throttling disc by a clamping ring 3c, which greatly simplifies the installation and replacement process of the throttling disc. This installation method allows operators to complete the replacement of the throttling disc without complicated tools or professional skills, reducing maintenance costs and improving work efficiency.

[0060] Example 3

[0061] In another embodiment of the present invention, a method for using a swirl type variable flow resistance low noise regulating ball valve is provided, comprising the following steps: the medium enters from the first valve body flow channel 1a port or the second valve body flow channel 1b port, enters the valve core ball assembly 3 through the regulating valve seat assembly 2, and when the medium flows through the throttling disc in the valve core ball assembly 3, the medium passes through the throttling disc 3a of the throttling hole, the throttling disc 3b of the rotating throttling groove, and the throttling of the "liquid spiral cavity" between the throttling disc 3a of the throttling hole and the throttling disc 3b of the rotating throttling groove. Since the installation angle and axial distance of adjacent throttling discs are adjustable, the flow resistance generated during throttling also changes accordingly, and the flow channel of the valve core ball assembly 3 is relatively long, which creates conditions for setting more different flow resistance values ​​in the flow channel of the valve core ball assembly 3, so that the adjustable flow resistance value of the present invention reaches 10 or even higher. Furthermore, due to the unique throttling disc combined with the swirl structure design of the "liquid spiral cavity", the present invention can realize the bidirectional throttling adjustment function without flow direction installation requirements.

[0062] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A swirl type variable flow resistance low noise regulating ball valve, characterized in that: The valve body comprises a valve body (1), an adjustable valve seat assembly (2) axially arranged symmetrically to the valve body (1), a valve core ball assembly (3) arranged between the adjustable valve seat assembly (2), and a valve stem assembly (4) arranged on the valve core ball assembly (3); wherein: The valve body (1) is provided with a first valve body flow channel (1a) and a second valve body flow channel (1b), and the inner ends of the first valve body flow channel (1a) and the second valve body flow channel (1b) are respectively installed with adjustable valve seat assemblies (2); The valve core ball assembly (3) is arranged in the inner cavity between the adjustable valve seat assembly (2), and its surface is in contact with the sealing surface of the adjustable valve seat assembly (2); The flow channel of the valve core ball assembly (3) is provided with mutually independent and replaceable multi-layer throttling hole throttling discs (3a) and rotating throttling groove throttling discs (3b), and the positions of adjacent throttling hole throttling discs (3a) and rotating throttling groove throttling discs (3b) and the size of the spiral cavity are controlled to form a liquid spiral cavity, thereby achieving the adjustability of the valve flow resistance and low-noise regulation.

2. A swirl type variable flow resistance low noise regulating ball valve according to claim 1, characterized in that: The valve core ball assembly (3) comprises a clamping ring (3c), which cooperates with the inner cavity of the valve core ball assembly (3) to firmly fix the throttling hole throttling disc (3a) and the rotating throttling groove throttling disc (3b) at a predetermined position.

3. A swirl type variable flow resistance low noise regulating ball valve according to claim 2, characterized in that: The valve core ball assembly (3) comprises a valve core ball base (3d), and the throttling hole throttling disc (3a) and the rotating throttling groove throttling disc (3b) are arranged relative to the valve core ball base (3d) through the valve core ball base (3d).

4. A swirl type variable flow resistance low noise regulating ball valve according to claim 3, characterized in that: The valve core ball assembly (3) comprises a valve core ball channel (3e) arranged on the outer periphery of the valve core ball base (3d).

5. A swirl type variable flow resistance low noise regulating ball valve according to any one of claims 1 to 4, characterized in that: The adjustable valve seat assembly (2) comprises a first valve body sealing O-ring (2a), wherein the first valve body sealing O-ring (2a) forms a seal between the valve body (1) and the adjustable valve seat assembly (2).

6. A swirl type variable flow resistance low noise regulating ball valve according to claim 5, characterized in that: The adjustable valve seat assembly (2) comprises a second valve core ball sealing O-ring (2b), and the second valve core ball sealing O-ring (2b) forms a seal between the valve core ball assembly (3) and the adjustable valve seat assembly (2).

7. The swirl-type variable flow resistance low noise regulating ball valve according to claim 5, characterized in that: The adjustable valve seat assembly (2) comprises an adjustable valve seat base (2c) arranged between the first valve body sealing O-ring (2a) and the second valve core ball sealing O-ring (2b).

8. The swirl type variable flow resistance low noise regulating ball valve according to claim 6, characterized in that: The adjustable valve seat assembly (2) comprises an adjustable window (2d) arranged at the center of the adjustable valve seat base (2c).

9. A method for installing a swirl-type variable flow resistance low noise regulating ball valve as claimed in any one of claims 1 to 8, characterized in that: include: S100: Before installation, ensure that the valve and the piping system are clean and free of impurities, and check the integrity of the retaining ring (3c) and the throttle disc of the throttle hole (3a) and the throttle disc of the rotating guide groove (3b); S200: placing the throttle hole throttle disc (3a) and the rotating guide groove throttle disc (3b) in the flow channel of the valve core ball assembly (3) according to the design requirements, ensuring that the installation angle and axial position of the throttle hole throttle disc (3a) and the rotating guide groove throttle disc (3b) meet the design specifications, and installing the retaining ring (3c) back to its original position to ensure that the throttle disc is firmly fixed; S300: During the installation of the regulating valve seat assembly (2), check the integrity of the first valve body sealing O-ring (2a) and the second valve core ball sealing O-ring (2b), and correctly place them at the corresponding positions of the valve seat base (2c) to ensure the sealing performance; S400: Install the regulating valve seat assembly (2) to the corresponding position of the valve body (1), ensure that it is well matched with the valve core ball assembly (3), and the shape and size of the regulating window (2d) on the regulating valve seat base meet the required flow regulation characteristics; S500: Connect the ball valve to the pipeline system through the valve core ball channel (3e), ensuring that the connection is tight and secure without leakage risk; S600: After installation, debug and test the ball valve to ensure that its performance under different working conditions meets the design requirements, check the two-way throttling adjustment function, and ensure that the valve can achieve the expected flow regulation characteristics in both forward and reverse flows.

10. A method for using a swirl-type variable flow resistance low noise regulating ball valve according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: The medium enters from the port of the first valve body flow channel (1a) or the port of the second valve body flow channel (1b), passes through the adjustable valve seat assembly (2) and enters the valve core ball assembly (3); Step 2: When the medium flows through the throttling disc in the valve core ball assembly (3), the medium is throttled through the throttling hole throttling disc (3a), the rotating throttling groove throttling disc (3b) and the "liquid spiral cavity" between the throttling hole throttling disc (3a) and the rotating throttling groove throttling disc (3b), thereby achieving the adjustability of the valve flow resistance and low-noise regulation.

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