A regulating valve

Abstract

The application relates to the field of valves, in particular to a regulating valve, which is internally movably provided with a valve body, the valve body is provided with a through-flow area extending along the moving direction of the valve body, the through-flow area comprises a plurality of through-flow holes penetrating through the valve body, and the distribution positions of the plurality of through-flow holes in the through-flow area are obtained according to the noise levels when fluid passes through the through-flow area under different opening degrees. In the scheme, the distribution positions of the through-flow holes in the through-flow area of the valve body are obtained according to the noise levels when fluid passes through the through-flow area under different opening degrees, so that the noise levels generated when fluid passes through the through-flow area under different opening degrees can all meet the relevant requirements, and finally the through-flow holes are arranged to have a good noise reduction effect during use of the regulating valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a regulating valve. BACKGROUND

[0002] The conventional valve body is usually V-shaped window. For small opening degree working condition, the pressure difference before and after the valve is relatively large. At this time, the noise reduction effect of ordinary V-shaped window is not obvious. The current common method is to design a throttling hole on the valve ball to achieve uniform flow to achieve the purpose of noise reduction. However, the common throttling hole is uniformly distributed. Although the purpose of noise reduction can be achieved, for the valve with high noise reduction requirement, the ideal noise reduction effect cannot be achieved when the flow changes. SUMMARY

[0003] The embodiment of the present application provides a kind of hemispherical regulating valve to solve the problem that the distribution position of throttling hole cannot further effectively help noise reduction in the related art.

[0004] To achieve the above purpose, the present application provides a kind of regulating valve, using the following technical scheme:

[0005] A regulating valve, an inner movable valve body is provided, the valve body is provided with flow-through area extending along its activity direction, the flow-through area includes a plurality of flow-through holes penetrating the valve body, and,

[0006] The distribution position of a plurality of flow-through holes in the flow-through area is obtained according to the noise level of fluid passing through the flow-through area at different opening degrees.

[0007] In some embodiments, the distribution position of a plurality of flow-through holes in the flow-through area is obtained according to the noise level of fluid passing through the flow-through area at different opening degrees, including the following steps:

[0008] According to the first model, the second model, the third model, the noise level of fluid passing through the flow-through area is obtained, and the target model of the flow-through area and the opening size related to the flow-through area is obtained; wherein the first model is obtained according to the noise level of fluid passing through the flow-through area and the pressure after the regulating valve, the second model is obtained according to the flow of the flow-through area and the opening size thereof, and the third model is obtained according to the flow of the flow-through area and the flow-through area thereof;

[0009] According to the target model, the target flow-through area of the flow-through area at different opening sizes is obtained, which meets the set noise level;

[0010] According to the target flow-through area of the flow-through area at different opening sizes, the distribution position of the flow-through hole on the flow-through area is determined.

[0011] In some embodiments, the target model is:

[0012]

[0013] wherein LA is a noise level, C is a condition constant calculated under a corresponding condition, P1 is a pre-valve pressure of the regulating valve under the corresponding condition, Q max is a maximum flow of the flow-through area under the corresponding condition, a is a flow coefficient of the flow-through area under a current opening degree, A0 is a flow-through area of the flow-through area under the current opening degree, R is a specific constant, L is the current opening degree of the flow-through area, L max is a maximum opening degree of the flow-through area, and p is a density of fluid under the corresponding condition.

[0014] In some embodiments, the first model is:

[0015] LA = C-lgP2

[0016] wherein P2 is a post-valve pressure of the regulating valve under the corresponding condition.

[0017] In some embodiments, the first model is obtained by a first standard model, and the first standard model is:

[0018] LA = 14lgKv + 18lgP1 + 5lgT1 - 5lgp + 20lg(P1 / P2)

[0019] wherein T1 is a temperature of fluid upstream of the regulating valve, and Kv is a flow capacity of the flow-through area.

[0020] In some embodiments, the second model is:

[0021]

[0022] wherein Q is a flow of the flow-through area under the corresponding condition.

[0023] In some embodiments, the third model is:

[0024] Q = aA0[2p(P1-P2)] 0.5

[0025] a = A2 / A0[1 / (1-(A2 / A0) 2 )] 0.5

[0026] wherein Q is a flow of the flow-through area under the corresponding condition, P2 is a pre-valve pressure under the corresponding condition, and A2 is a flow-through area of the flow-through area under the maximum opening degree.

[0027] In some embodiments, diameters of the flow-through holes are consistent or at least partially inconsistent.

[0028] In some embodiments, the throughflow hole comprises at least a first small hole and a second small hole with different shapes.

[0029] In some embodiments, the valve body is a semi-spherical ball valve, which is arranged in the regulating valve in a rotating manner, and the throughflow area is arranged at one end of the valve body in a rotating circumferential direction.

[0030] The technical scheme provided by the application has the following beneficial effects:

[0031] The regulating valve provided by the embodiments of the application has the following beneficial effects: the distribution positions of the throughflow holes on the throughflow area of the valve body are obtained according to the noise levels of the fluid passing through the throughflow area at different opening degrees, so that the noise levels of the fluid passing through the throughflow area at different opening degrees can all meet the relevant requirements, and finally the opening and distribution of the throughflow holes have good noise reduction effects when the regulating valve is used. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0033] Fig. 1 The cross-sectional schematic view of the overall structure of the regulating valve provided by the embodiments of the application is shown in the figure.

[0034] Fig. 2 The top view of the valve body provided by the embodiments of the application is shown in the figure.

[0035] Fig. 3 The cross-sectional schematic view of the valve body provided by the embodiments of the application is shown in the figure.

[0036] In the figure: 1, valve body; 2, throughflow area; 3, throughflow hole. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the application.

[0038] The existing conventional valve body is generally V-shaped window, and when the small opening degree condition occurs, the pressure difference before and after the valve is relatively large, at this time, the noise reduction effect of the ordinary V-shaped window is not obvious. The common method at present is to design a throttling hole on the valve ball to achieve flow equalization to achieve the purpose of noise reduction. However, the common throttling hole is uniformly distributed, although the purpose of noise reduction can be achieved, but for the valve with higher noise reduction requirement, the ideal noise reduction effect cannot be achieved when the flow changes.

[0039] Therefore, the embodiment of the present application provides a regulating valve to solve the above problems.

[0040] Reference Figs. 1 to 3 A regulating valve, which is internally movably provided with a valve body 1, wherein the valve body 1 is provided with a flow-through area 2 extending along the movement direction thereof, the flow-through area 2 comprises a plurality of flow-through holes 2 penetrating through the valve body 1, and the distribution positions of the plurality of flow-through holes 2 in the flow-through area 2 are obtained according to the noise level of the fluid passing through the flow-through area 2 at different opening degrees.

[0041] Wherein, when the flow-through area 2 is moved to the on state of the regulating valve, the flow of the fluid at the regulating valve is controlled according to the number of the flow-through holes 2 connected on the flow-through area 2, that is, the opening degree, at the same time, since the distribution positions of the flow-through holes 2 on the flow-through area 2 are obtained according to the noise level of the fluid passing through the flow-through area 2 at different opening degrees, that is, the distribution number or the overall flow-through area of the flow-through holes 2 in the movement direction of the valve body 1 is obtained according to the generated noise level, thereby realizing that the noise level generated when the fluid passes through the flow-through area 2 at different opening degrees can meet the relevant requirements, and finally realizing that the opening and distribution of the flow-through holes 2 have good noise reduction effect when the regulating valve is used.

[0042] The key point of the present application is that the flow-through holes 2 with a plurality of numbers or areas corresponding to the noise level at different opening degrees are connected on both sides of the valve body 1, that is, the distribution positions of the flow-through holes 2 on the valve body 1 are related to the noise level that can be generated, so as to realize the optimization of the noise level of the fluid passing through the flow-through area 2 at different opening degrees, which is different from the present situation that the flow-through holes 2 are uniformly arranged in the prior art and cannot produce obvious beneficial effect on the noise level of the fluid passing through the regulating valve.

[0043] In addition, in some embodiments, each flow-through hole 2 in the flow-through area 2 can be completely consistent, such as shape, hole diameter, etc., and in other embodiments, the shape and size of each flow-through hole 2 can also be different, which can be adaptively selected by the skilled person according to the flow capacity, noise level, structural stability and other aspects required by the regulating valve.

[0044] In this embodiment, the valve body 1 is a semi-spherical ball valve, which is rotatably arranged in the regulating valve, and one end of the valve body 1 in the circumferential direction is provided with the flow-through area 2. Among them, the semi-spherical ball valve can block the two sides of the regulating valve through the part of the valve body 1 which is not provided with the flow-through area 2, so as to realize the closed regulating valve; when the semi-spherical ball valve is rotated to rely on at least part of the flow-through holes 2 in the flow-through area 2 to communicate the two sides of the valve body 1, the fluid flow is relatively smaller, so as to realize the small opening condition of the regulating valve; at the same time, in the rotating process of the semi-spherical ball valve, as the number of flow-through holes 2 in the flow-through area 2 which communicate the two sides of the valve body 1 increases, the opening of the regulating valve will also gradually increase, until all the flow-through holes 2 in the flow-through area 2 communicate the two sides of the valve body 1 to reach the maximum opening of the flow-through area 2, at this time, further rotation, the semi-spherical ball valve will communicate the two sides of the valve body 1 through the missing half region, so as to realize the large opening condition of the regulating valve. It can be understood that in other embodiments, the valve body 1 can also adopt other structures and activities, such as a linear reciprocating type valve body 1 which blocks the regulating valve by linear reciprocation, and the present embodiment is not limited thereto.

[0045] Optionally, the distribution positions of the plurality of flow-through holes 2 in the flow-through area 2 are obtained according to the noise level of the fluid passing through the flow-through area 2 at different openings, including the following steps:

[0046] S100, obtaining a target model of the noise level of the fluid passing through the flow-through area 2 related to the flow-through area and the opening size according to a first model, a second model and a third model; wherein the first model is obtained according to the noise level of the fluid passing through the flow-through area 2 and the back pressure of the regulating valve, the second model is obtained according to the flow rate of the flow-through area 2 and the opening size thereof, and the third model is obtained according to the flow rate of the flow-through area 2 and the flow-through area thereof;

[0047] S200, obtaining a target flow-through area of the flow-through area 2 at different opening sizes according to the target model, which meets the set noise level;

[0048] S300, determining the distribution positions of the flow-through holes 2 on the flow-through area 2 according to the target flow-through area of the flow-through area 2 at different opening sizes.

[0049] In this way, the noise level is linked to the opening size and the flow-through area of the regulating valve through the first model, the second model and the third model, and finally a target model which can reflect the target flow-through area meeting the set noise level at different opening sizes is obtained, and the target model is used to determine the target flow-through area at each opening, and further determine the corresponding flow-through area of the flow-through holes 2 at each opening, and then the distribution positions of each flow-through hole 2 are obtained.

[0050] The target model is obtained according to the first model, the second model and the third model, in which the first model is obtained from a first standard model, and the first standard model is:

[0051] LA = 14lgKv + 18lgP1 + 5lgT1 - 5lgp + 20lg(P1 / P2)

[0052] In the formula, LA is the noise level, Kv is the flow capacity of the flow-through area 2, T1 is the temperature of the fluid upstream of the regulating valve, P1 is the pressure before the regulating valve under the corresponding working condition, C is the working condition constant calculated under the corresponding working condition, P2 is the pressure after the regulating valve under the corresponding working condition, and p is the density of the fluid under the corresponding working condition.

[0053] Since the pressure P1 before the valve is generally stable for a certain pipeline working condition, it can be considered as a constant, and the regulating valve mainly controls the flow and the pressure after the valve, therefore, the function relationship in the formula can be simplified to obtain the first model:

[0054] LA = C-lgP2

[0055] In the formula, C is the working condition constant calculated under the corresponding working condition in the first standard model.

[0056] The second model is specifically:

[0057]

[0058] In the formula, Q is the flow of the flow-through area 2 under the corresponding working condition, Qmax is the maximum flow of the flow-through area 2 under the corresponding working condition, L is the current opening degree of the flow-through area 2, and Lmax is the maximum opening degree of the flow-through area 2. max max

[0059] The third model is specifically:

[0060] Q = aA0[2p(P1-P2)] 0.5

[0061] a = A2 / A0[1 / (1-(A2 / A0) 2 )] 0.5

[0062] In the formula, P2 is the pressure before the valve under the corresponding working condition, a is the flow coefficient of the flow-through area 2 under the current opening degree, which can also be used as a representation of the area distribution rule of the flow-through hole 2 under a certain opening degree, A0 is the flow-through area of the flow-through area 2 under the current opening degree, and A2 is the flow-through area of the flow-through area 2 under the maximum opening degree.

[0063] The target model can be obtained by combining the above first model, second model and third model.​​

[0064]

[0065] Further, the corresponding relationship between the noise level and the flow area A0 and the flow coefficient a can be obtained when the flow area 2 is at different opening degrees, and the flow coefficient a and the target flow area A0 can be determined by combining the corresponding relationship between the flow coefficient and the flow area of the flow area 2 in the third model, and the distribution position of the flow hole 2 can be further determined according to the flow coefficient and the target flow area.

[0066] In some embodiments, the diameters of the flow holes 2 are consistent, and in other embodiments, the diameters of some of the flow holes 2 are inconsistent. Meanwhile, in some embodiments, the flow holes 2 at least include first and second small holes with different shapes. The diameters and shapes of the flow holes 2 can be adaptively selected by a technician according to the flow capacity, noise level, structural stability and other aspects required by the regulating valve.

[0067] The working principle and beneficial effects of the regulating valve provided in the embodiments of the present application are as follows:

[0068] When the flow area 2 is moved to turn on the regulating valve, the flow of fluid at the regulating valve can be controlled according to the number of the flow holes 2 turned on on the flow area 2, that is, the opening degree, and since the distribution position of the flow holes 2 on the flow area 2 is obtained according to the noise level when the fluid passes through the flow area 2 at different opening degrees, the noise level generated when the fluid passes through the flow area 2 at different opening degrees can meet the relevant requirements, and finally the opening and distribution of the flow holes 2 have good noise reduction effect when the regulating valve is used.

[0069] Further, by turning on a number of flow holes 2 with corresponding noise levels at different opening degrees on both sides of the valve body 1, that is, the distribution position of the flow holes 2 on the valve body 1 is related to the noise level that can be generated, the noise level of the fluid passing through the flow area 2 at different opening degrees is optimized, which is different from the prior art in which the flow holes 2 are uniformly arranged and cannot produce obvious beneficial effects on the noise level of the fluid passing through the regulating valve.

[0070] In the description of the application, it needs to be understood that the positive direction of "X" in the drawings represents the right direction, and correspondingly, the reverse direction of "X" represents the left direction; the positive direction of "Y" represents the front direction, and correspondingly, the reverse direction of "Y" represents the rear direction; the positive direction of "Z" represents the upper direction, and correspondingly, the reverse direction of "Z" represents the lower direction, the directions or positional relationships indicated by the terms "X", "Y", "Z" and the like are based on the directions or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. Moreover, specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] In the description of the application, it needs to be understood that the directions or positional relationships indicated by the terms "up", "down" and the like are based on the directions or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. Unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0072] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0073] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A regulating valve, characterized in that The valve body (1) is provided with a through-flow area (2) extending along the movement direction of the valve body (1), the through-flow area (2) comprises a plurality of through-flow areas (3) penetrating the valve body (1), and The distribution positions of the plurality of through-flow areas (3) in the through-flow area (2) are obtained according to the noise levels of fluid passing through the through-flow area (2) at different opening degrees; The distribution positions of the plurality of through-flow areas (3) in the through-flow area (2) are obtained according to the noise levels of fluid passing through the through-flow area (2) at different opening degrees, comprising the following steps: According to the first model, the second model and the third model, a target model of the noise level of fluid passing through the through-flow area (2) related to the through-flow area and the opening degree is obtained; wherein the first model is obtained according to the noise level of fluid passing through the through-flow area (2) and the back pressure of the regulating valve, the second model is obtained according to the flow of the through-flow area (2) and the opening degree, and the third model is obtained according to the flow of the through-flow area (2) and the through-flow area. According to the target model, the target through-flow area of the through-flow area (2) at different opening degrees meeting the set noise level is obtained. According to the target through-flow area of the through-flow area (2) at different opening degrees, the distribution positions of the through-flow areas (3) on the through-flow area (2) are determined. The target model is: In the formula, LA is a noise level, C is a working condition constant calculated under a corresponding working condition, P1 is a pre-valve pressure of the regulating valve under the corresponding working condition, Q max is a maximum flow of the flow-through area (2) under the corresponding working condition, a is a flow coefficient of the flow-through area (2) under a current opening degree, A0 is a flow-through area of the flow-through area (2) under the current opening degree, R is a specific constant, L is a current opening degree of the flow-through area (2), L max is a maximum opening degree of the flow-through area (2), and p is a density of a fluid under the corresponding working condition.

2. The regulating valve according to claim 1, characterized in that The first model is: In the formula, P2 is the back pressure of the regulating valve under the corresponding working condition.

3. The regulating valve according to claim 2, characterized in that The first model is obtained by a first standard model, and the first standard model is: In the formula, T1 is the temperature of the fluid upstream of the regulating valve, and Kv is the flow capacity of the through-flow area (2).

4. The regulating valve according to claim 1, characterized in that The second model is: In the formula, Q is the flow of the through-flow area (2) under the corresponding working condition.

5. The regulating valve according to claim 1, characterized in that The third model is: In the formula, Q is the flow of the through-flow area (2) under the corresponding working condition, P2 is the back pressure of the regulating valve under the corresponding working condition, and A2 is the through-flow area of the through-flow area (2) at the maximum opening degree.

6. The regulating valve according to claim 1, characterized in that The diameters of the through-flow areas (3) are consistent or at least part of the diameters of the through-flow areas (3) are inconsistent.

7. The regulating valve according to claim 1, characterized in that The through-flow areas (3) at least include first and second small holes with different shapes.

8. The regulating valve according to any one of claims 1 to 7, characterized in that The valve body (1) is a semi-spherical ball valve, which is rotatably arranged in the regulating valve, and one end of the valve body (1) in the rotation direction is provided with the through-flow area (2).

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