CN217234555U - Noise reduction ball valve - Google Patents

Abstract

The utility model discloses a ball valve of making an uproar falls, including valve body and case, the valve body is provided with the valve pocket, the case sets up in the valve pocket, just the case includes the core shell and runs through the fluid passage of core shell, fluid passage's one end is the import, fluid passage's the other end is the export, the flow area of export is greater than the import. By adopting the scheme, in the process of controlling the valve core to rotate, the opening degree of the outlet is always larger than that of the inlet, when fluid flows out of the valve core through the outlet, the speed of the fluid can be lower, the flow can be relatively smooth, and the noise can be lower. Especially in a state of a small opening degree, the noise reduction is more remarkable.

Description

Noise reduction ball valve

Technical Field

The utility model relates to a valve gear technical field, concretely relates to ball valve of making an uproar falls.

Background

The heat supply field is used for solving the problems that most regulating valve bodies balanced by a secondary network heat supply system adopt ball valves, the ball valves are easy to generate water hammer and flow-induced vibration in the regulating process, and the like. At the same time, the accumulation of separation bubbles can create a gas explosion, thereby forming a sustained fluid pressure wave.

The fluid booming noise generated by valve closure is propagated along water flow, and the low-frequency noise seriously affects the life of residents, so that the valve adjustment is greatly limited. In the serious part, the ball valve can only be opened fully, thereby causing the valve to lose the adjusting function. In order to overcome the defect of larger noise generated by the interception of the ball valve, the research on a novel noise-reducing ball valve is very necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ball valve of making an uproar falls, the noise that should fall the ball valve of making an uproar can be less relatively.

In order to solve the technical problem, the utility model provides a ball valve of making an uproar falls, including valve body and case, the valve body is provided with the valve pocket, the case sets up in the valve pocket, just the case includes the core shell and runs through the fluid passage of core shell, fluid passage's one end is the import, fluid passage's the other end is the export, the flow area of export is greater than import.

By adopting the scheme, in the process of controlling the valve core to rotate, the opening degree of the outlet is always larger than that of the inlet, when fluid flows out of the valve core through the outlet, the speed of the fluid can be lower, the flow can be relatively smooth, and the noise can be lower. Particularly, in a state of a small opening degree, the noise reduction is more remarkable.

Optionally, the face of the outlet is non-planar.

Optionally, the outlet is located on a plane including a first plane portion and a second plane portion, and the first plane portion and the second plane portion are arranged at an included angle.

Optionally, the angle between the first planar portion and the second planar portion ranges from [90 °, 180 ° ].

Optionally, the first planar portion and the second planar portion are each formed by cutting the core shell.

Optionally, the plane of the outlet further includes a third plane portion and a curved surface portion, the third plane portion is parallel to the plane of the inlet, the third plane portion is connected with the first plane portion, and the first plane portion is connected with the second plane portion through the curved surface portion.

Optionally, still include the vortex part, the vortex part install in the valve body, and be located the low reaches of export, the vortex part is provided with if disturb the discharge orifice.

Optionally, the spoiler component includes a spoiler cover and a positioning cylinder, the spoiler cover is installed in the positioning cylinder, and the positioning cylinder is partially located in the valve cavity.

Optionally, the spoiler cover is flat, or the spoiler cover has a protruding plate portion protruding toward the outlet.

Optionally, the positioning cylinder is provided with an external thread, the inner wall of the valve cavity is provided with an internal thread, and the positioning cylinder is assembled on the valve body in a threaded manner.

Drawings

Fig. 1 is a cross-sectional view of a noise reduction ball valve provided by the present invention;

FIG. 2 is a schematic structural view of the valve cartridge;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a top view of a variant of FIG. 2;

FIG. 5 is a schematic structural view of a first embodiment of a spoiler cover;

FIG. 6 is a schematic structural view of a second embodiment of a spoiler cover;

FIG. 7 is a schematic structural view of a third embodiment of a spoiler cover;

FIG. 8 is a schematic structural view of a fourth embodiment of a spoiler shroud;

FIG. 9 is a schematic structural view of a fifth embodiment of a spoiler cover;

FIG. 10 is a schematic structural diagram of a sixth embodiment of a spoiler cover.

The reference numerals in fig. 1-10 are illustrated as follows:

1, a valve body, 11 valve cavities, 12 valve rod shafts and 13 positioning columns;

2, a valve core, 21 a core shell, 22 fluid channels, 221 inlet, 222 outlet, 22a first plane part, 22b second plane part, 22c third plane part, 22d curved surface part, 23 upper end hole and 24 lower end hole;

3, a flow disturbing component, 31 a flow disturbing cover, 311 flow disturbing holes and 32 a positioning cylinder.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function, and do not denote any particular limitation as to order and/or importance.

Noise reducing ball valves are a common valve device. Generally speaking, the noise reduction ball valve includes a valve body and a valve core, the valve core is spherical, and the valve core is provided with a fluid channel, and the two ends of the fluid channel are respectively an inlet and an outlet. In practical application, the valve core is driven to rotate, so that the opening degree of the noise reduction ball valve can be adjusted, and the flow can be adjusted.

In conventional solutions, the flow areas of the inlet and outlet of the cartridge are uniform. Therefore, the opening degree of the inlet position and the opening degree of the outlet position are consistent in the process of driving the valve core to rotate. Therefore, when the valve core is in a non-fully-opened state, two pressure changes exist in the process that fluid enters the fluid channel and flows out of the fluid channel, and the speed of entering and exiting the valve core is high. When the valve opening is very small, the flow direction of the internal fluid can be changed sharply at the narrow flow passage of the inlet valve core and the outlet valve core, and the transition of the flow state occurs. Unsteady flow separation and large-scale vortex shedding can occur downstream of both the inlet and outlet of the spool. When the vortex generated by flow separation at the downstream wall surface of the inlet and the outlet of the valve core is rapidly increased, the flow passage area is greatly extruded, the smooth passing of upstream fluid is blocked, the water hammer phenomenon occurs at the upstream side of the valve body, and the flow noise is caused. The downstream of the inlet and the outlet forms strong turbulent flow to generate vibration caused by the flow of the valve body, further causing flow noise and influencing the normal use of the noise reduction ball valve. The narrow flow channel at the valve core outlet can also generate flow separation and turbulent flow, and pressure disturbance is trapped in the fluid channel of the valve core and repeatedly oscillates, so that the pressure disturbance cannot be quickly released, and the flow-induced vibration condition near the valve is extremely complicated.

Therefore, the embodiment of the present invention provides a scheme, which can set the flow area of the inlet of the valve core to be smaller than the flow area of the outlet. Thus, when the valve core rotates to adjust the opening degree, the opening degree of the outlet position is larger than that of the inlet position, and the speed of the fluid flowing out of the valve core can be reduced. The scheme can solve the problems of flow separation and vortex shedding at the outlet of the valve core caused by narrow flow channel, thereby eliminating flow-induced vibration at the outlet. Moreover, the valve core outlet with enlarged flow area can effectively release the pressure disturbance trapped in the valve core fluid channel in the conventional scheme, change the inverse pressure gradient distribution at the inlet and reduce the possibility of flow-solid resonance, thereby achieving the purpose of effectively controlling the noise of the ball valve.

In detail, referring to fig. 1 to 4, fig. 1 is a cross-sectional view of a noise reduction ball valve provided in the present invention, fig. 2 is a schematic structural view of a valve element, fig. 3 is a top view of fig. 2, and fig. 4 is a top view of a modification of fig. 2.

As shown in fig. 1, the utility model provides a ball valve of making an uproar falls, including valve body 1 and case 2, valve body 1 is provided with valve pocket 11, and case 2 sets up in valve pocket 11.

Referring to fig. 2, the top of the valve core 2 is provided with an upper end hole 23, and the bottom of the valve core 2 is provided with a lower end hole 24; be provided with reference column 13 in the valve body 1, the connected mode of reference column 13 and valve body 1 does not do the restriction here, specifically can be threaded connection, interference fit, welding, riveting etc. as long as can guarantee the reliability of connecting can, case 2 can rotate with reference column 13 through lower-end hole 24 and be connected. The valve body 1 is further provided with a valve rod shaft 12 capable of penetrating through a wall body of the valve body 1, one end of the valve rod shaft 12 can extend into the valve cavity 11 and is fixedly connected with an upper end hole 23 of the valve core 2, the specific connection mode can be threaded connection, interference fit, welding, riveting and the like, so that the valve rod shaft 12 and the valve core 2 can synchronously rotate, and the other end of the valve rod shaft 12 can extend out of the valve body 1 so as to be connected with a driving member (not shown in the figure). Under the effect of driving member, valve rod shaft 12 can rotate, and then can drive case 2 and rotate to the realization is to the regulation of the ball valve aperture of making an uproar that falls.

Here, the embodiment of the present invention does not limit the specific structural form of the driving member as long as the technical purpose of driving can be achieved. In some embodiments, the driving member may be a motor, an electromagnetic component, or the like, and at this time, the present invention provides a noise reduction ball valve as an automatically controlled valve device, such as an electrically operated valve, an electromagnetic valve, or the like. In other embodiments, the driving member may also be a handle or the like, at which point the present invention provides a noise reducing ball valve that is a manually controlled valve device.

The valve core 2 comprises a core shell 21 and a fluid channel 22 penetrating through the core shell 21, wherein one end of the fluid channel 22 is an inlet 221, and the other end of the fluid channel 22 is an outlet 222; in the embodiment of fig. 1, the inlet 221 is embodied as the left end of the fluid channel 22 and the outlet 222 is embodied as the right end of the fluid channel 22. Also, the outlet 222 has a larger flow area than the inlet 221.

With such an arrangement, in the process of controlling the rotation of the valve core 2, the opening degree of the outlet 222 is always larger than that of the inlet 221, and when the fluid flows out of the valve core 2 through the outlet 222, the speed of the fluid can be small, the flow can be relatively smooth, and the noise can be small. Especially in a state of a small opening degree, the noise reduction is more remarkable.

The utility model provides an among the ball valve of making an uproar falls, the whole aperture of making an uproar ball valve of falling is regulated and control by the aperture of import 221.

It should be noted that the embodiment of the present invention does not limit the specific structure of the core housing 21 and the fluid channel 22, as long as the flow area of the outlet 222 can be ensured to be larger than that of the inlet 221. For example, the flow area of the fluid passage 22 may be increased continuously or stepwise in a direction approaching the outlet 222, that is, the flow area of the fluid passage 22 may be gradually increased, so that it is possible to ensure that the flow area of the outlet 222 is larger than that of the inlet 221.

In actual manufacturing process, the shell wall of the core shell 21 may be cut to increase the flow area of the outlet 222, and in this embodiment, the shape of the plane of the outlet 222 may be varied, which is related to the specific cutting mode.

In some embodiments, the face of the outlet 222 may be a flat surface, in which case the shape of the outlet 222 may be elliptical. In other embodiments, the surface of the outlet 222 may be non-planar, and in this case, the structure of the surface of the outlet 222 may be diversified.

Taking the plane of the outlet 222 as a non-planar surface as an example, as shown in fig. 3 and 4, the plane of the outlet 222 may include a first planar portion 22a and a second planar portion 22b, and the first planar portion 22a and the second planar portion 22b are disposed at an angle. The size of the included angle is not limited herein, and in specific practice, a person skilled in the art can set the included angle according to actual needs as long as the use requirements can be met; in an exemplary embodiment, the angle between the first plane portion 22a and the second plane portion 22b may be in a range of [90 °, 180 ° ], wherein fig. 3 illustrates an embodiment with an angle of 160 °, and fig. 4 illustrates an embodiment with an angle of 90 °.

The first plane part 22a and the second plane part 22b may be directly connected, or may be connected through another plane part.

With continued reference to fig. 3 and 4, the plane of the outlet 222 may further include a third plane portion 22c and a curved surface portion 22d, the plane of the inlet 221 and the third plane portion 22c may be parallel, the third plane portion 22c may be connected to the first plane portion 22a, and the first plane portion 22a is connected to the second plane portion 22b through the curved surface portion 22 d. The third planar section 22c is provided primarily to avoid cutting the wall on the left in fig. 3/4 to ensure the integrity of the wall for closing the valve. The curved surface portion 22d is provided mainly for bypassing the upper end hole 23 and the lower end hole 24; of course, the curved surface portion 22d may not be present if the cutting region itself does not reach the upper end hole 23 and the lower end hole 24.

Further, the utility model provides a ball valve of making an uproar falls can also include vortex part 3, and vortex part 3 can install in valve body 1 to can be located the low reaches of export 222, vortex part 3 can be provided with if disturb discharge orifice 311. When the fluid flowing out from the outlet 222 flows through the spoiler 3, the spoiler hole 311 of the spoiler 3 can effectively change the flow form of the downstream of the valve body, so that the low-frequency large-scale vortex appearing at the rear side of the inlet of the valve core and the low-frequency large-scale structure in the turbulence are rapidly broken, the flowing fluid generates more small-scale high-frequency vortex structures, and the possibility of further amplifying the vibration caused by the low-frequency flow is eliminated. On the other hand, the flow disturbing member 3 can also reduce the flow velocity of the fluid downstream of the spool 2 to some extent to better reduce noise.

The spoiler 3 may be of one-piece construction.

Alternatively, as shown in fig. 1, the spoiler 3 may be a split structure including a spoiler cover 31 and a positioning cylinder 32. The spoiler cover 31 may be installed on the positioning cylinder 32, and the specific installation manner includes, but is not limited to, interference fit, threaded connection, clamping, riveting, welding, etc., as long as the connection reliability of the spoiler cover 31 and the positioning cylinder 32 can be ensured. The positioning cylinder 32 of the turbulence component 3 can be used for being mounted with the valve body 1, and the specific mounting mode includes but is not limited to interference fit, threaded connection, clamping, riveting, welding and the like, as long as reliable connection of the turbulence cover 31 and the positioning cylinder 32 can be ensured; taking the threaded connection scheme as an example, the positioning cylinder 32 may be provided with external threads, the inner wall of the valve cavity 11 may be provided with internal threads, and the positioning cylinder 32 may be assembled to the valve body 1 through threads. After the installation is completed, at least a part of the positioning cylinder 32 can be located in the valve cavity 11 to reduce the size of the part of the positioning cylinder 32 protruding out of the valve body 1, so that the volume of the noise reduction ball valve can be reduced.

The structure of the spoiler cover 31 may be various as long as the above-described spoiler function can be achieved.

Referring to fig. 5 to 10, fig. 5 is a schematic structural diagram of a first embodiment of a spoiler cover, fig. 6 is a schematic structural diagram of a second embodiment of the spoiler cover, fig. 7 is a schematic structural diagram of a third embodiment of the spoiler cover, fig. 8 is a schematic structural diagram of a fourth embodiment of the spoiler cover, fig. 9 is a schematic structural diagram of a fifth embodiment of the spoiler cover, and fig. 10 is a schematic structural diagram of a sixth embodiment of the spoiler cover.

As shown in fig. 5 and 6, the spoiler cover 31 has a boss portion protruding toward the outlet, which may be embodied as a tapered plate, and the spoiler hole 311 may be provided at the tapered plate. The tapered plate may direct fluid for reducing flow resistance. The orifi 311 may be circular holes, such an embodiment being seen in fig. 5; alternatively, the spoiler holes 311 may be bar-shaped holes, and this embodiment may be shown in fig. 6.

As a variation of the above, the convex plate portion may be a spherical plate, which is shown in fig. 7 and 8. It will be appreciated that the raised plate portion may have other configurations, such as an oval plate, etc., in addition to the tapered, spherical plate arrangement described above.

As shown in fig. 9 and 10, the spoiler cover 31 may also have a flat plate shape, and in this case, the spoiler cover 31 may have a relatively simple structural form.

It should be emphasized, although the design intention of the embodiment of the present invention is to fall the noise problem that the ball valve existed that makes an uproar to using of thing networking temperature balance valve, actually, the range of application of the ball valve that should fall makes an uproar is not limited to thing networking temperature balance valve, that is to say, the application scene is in fact not enough as the definition of the scope of the embodiment of the present invention, the embodiment of the present invention provides a fall the ball valve that makes an uproar can be applied to under any one scene.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The noise reduction ball valve is characterized by comprising a valve body (1) and a valve core (2), wherein the valve body (1) is provided with a valve cavity (11), the valve core (2) is arranged in the valve cavity (11), the valve core (2) comprises a core shell (21) and a fluid passage (22) penetrating through the core shell (21), one end of the fluid passage (22) is an inlet (221), the other end of the fluid passage (22) is an outlet (222), and the flow area of the outlet (222) is larger than that of the inlet (221).

2. The noise reducing ball valve of claim 1, wherein the outlet (222) is non-planar in a plane.

3. The noise reducing ball valve according to claim 2, wherein the outlet (222) comprises a first flat portion (22a) and a second flat portion (22b), and the first flat portion (22a) and the second flat portion (22b) are arranged at an included angle.

4. A noise-reducing ball valve according to claim 3, characterized in that the angle between the first flat portion (22a) and the second flat portion (22b) ranges from [90 °, 180 ° ].

5. A noise reducing ball valve according to claim 3, wherein the first flat portion (22a) and the second flat portion (22b) are each formed by cutting the core case (21).

6. A noise reducing ball valve according to claim 3, wherein the outlet (222) further comprises a third flat portion (22c) and a curved portion (22d), the third flat portion (22c) is parallel to the inlet (221), the third flat portion (22c) is connected to the first flat portion (22a), and the first flat portion (22a) is connected to the second flat portion (22b) through the curved portion (22 d).

7. A noise reducing ball valve according to any of claims 1-6, further comprising a flow disturbing member (3), said flow disturbing member (3) being mounted to the valve body (1) downstream of the outlet (222), said flow disturbing member (3) being provided with a flow disturbing hole (311).

8. The noise reducing ball valve according to claim 7, wherein the spoiler component (3) comprises a spoiler cover (31) and a positioning cylinder (32), the spoiler cover (31) is mounted on the positioning cylinder (32), and the positioning cylinder (32) is partially located in the valve cavity (11).

9. The noise reducing ball valve according to claim 8, wherein the spoiler cover (31) has a flat plate shape, or wherein the spoiler cover (31) has a boss portion protruding toward the outlet (222).

10. The noise reducing ball valve according to claim 8, wherein the positioning cylinder (32) is provided with an external thread, the inner wall of the valve chamber (11) is provided with an internal thread, and the positioning cylinder (32) is screw-fitted to the valve body (1).

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