CN213512103U - Multistage pressure-reducing and noise-reducing regulating valve - Google Patents

Abstract

The utility model provides a governing valve of making an uproar falls in multistage step-down, is assembled on the valve body by valve gap, valve rod, case, pressure cover, the valve cage integrated configuration and the disk seat that step-down in grades, and the governing valve of making an uproar still includes in multistage step-down: the noise reduction valve cage is arranged in the valve body; the noise reduction valve cage is a hollow cylinder, a plurality of outflow holes for circulating media are uniformly distributed on the side wall of the noise reduction valve cage, and the hole diameters, arrangement and number of the outflow holes are designed and customized according to requirements; one end of the noise reduction valve cage is welded at the lower end of the pressing sleeve, and the other end of the noise reduction valve cage is installed on the valve seat; the noise reduction valve cage is positioned on the outer side of the valve cage combined structure with the step-by-step pressure reduction, and a cylindrical space is formed between the noise reduction valve cage and the valve cage combined structure with the step-by-step pressure reduction. By implementing the embodiment of the application, the flow capacity and the adjusting performance of the adjusting valve under the high pressure drop condition can be improved, and the noise is reduced.

Description

Multistage pressure-reducing and noise-reducing regulating valve

Technical Field

The embodiment of the application relates to the technical field of regulating valves, in particular to a multistage pressure-reducing and noise-reducing regulating valve.

Background

Utility model patent ZL201920346899.0 discloses the valve cage integrated configuration and the governing valve of installation valve cage integrated configuration of step-down.

Wherein, the valve cage integrated configuration of step reduction includes: the valve comprises a plurality of valve cages, wherein the valve cages are formed into hollow cylinders, the valve cages are hollow, the valve cages are sleeved one by one from inside to outside and installed, each throttling hole used for circulating media is formed in the side wall of each valve cage, the throttling holes of the valve cages are identical in number and are distributed correspondingly in positions, the corresponding throttling holes of every two adjacent valve cages are staggered and partially overlapped, and the areas of the overlapped parts of the throttling holes are the throttling areas.

The regulating valve includes: the valve body is internally provided with a valve passage; the valve seat is arranged on the side wall of the passage opening of the valve passage, and a passage for circulating a medium is arranged on the valve seat; the valve cage combination structure with the step-down pressure is arranged in the valve body, and one end of the valve cage combination structure with the step-down pressure is arranged on the valve seat so that the medium flows into the interior of the valve cage combination structure with the step-down pressure through the channel port and flows out through the throttling hole; the valve core is movably arranged in the valve cage combined structure for stepped pressure reduction, and the quantity of the throttling holes is shielded to realize the regulation of flow when the valve core moves axially; the valve cover is fixedly connected with the valve body and tightly presses and fixes the valve cage combined structure subjected to step pressure reduction in the valve body; one end of the valve rod is connected with the valve core, and the other end of the valve rod penetrates through the valve cover and drives the valve core to move axially; and the pressure sleeve is arranged between the valve cover and the valve cage combined structure for reducing the pressure in a grading manner.

In practice, it has been found that when the regulating valve with the cage assembly mounted thereon is used under individual high pressure drop compressible fluid conditions, the noise level is not satisfactory.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application discloses a multistage pressure reduction and noise reduction regulating valve.

Wherein, a governing valve of making an uproar falls in multistage step-down, is assembled on the valve body by valve gap, valve rod, case, pressure cover, the valve cage integrated configuration and the disk seat that step-down in grades, governing valve of making an uproar still includes falls in multistage step-down:

the noise reduction valve cage is arranged in the valve body; the noise reduction valve cage is a hollow cylinder, a plurality of outflow holes for circulating media are uniformly distributed on the side wall of the noise reduction valve cage, and the hole diameters, arrangement and number of the outflow holes are designed and customized according to requirements;

one end of the noise reduction valve cage is welded at the lower end of the pressing sleeve, and the other end of the noise reduction valve cage is installed on the valve seat; the noise reduction valve cage is positioned on the outer side of the valve cage combined structure with the step-by-step pressure reduction, and a cylindrical space is formed between the noise reduction valve cage and the valve cage combined structure with the step-by-step pressure reduction.

The beneficial effects of the above technical scheme of the embodiment of the application are as follows:

in the embodiment of the application, the noise reduction valve cage is combined with the valve cage combined structure for stepped pressure reduction, so that the static pressure distribution of the compressible fluid medium in the throttling hole is in a stepped pressure reduction form, and the flow capacity and the regulation performance of the regulating valve under a high pressure reduction condition are improved. Furthermore, media flow out from the throttling hole of the valve cage combination structure with the step-down pressure, and the media can collide the inner wall of the noise reduction valve cage through the space between the noise reduction valve cage and the valve cage combination structure with the step-down pressure, so that the media can be divided into a plurality of small-diameter flow bundles to flow out of the outflow hole of the noise reduction valve cage, the conversion efficiency of kinetic energy to sound energy is reduced, and the noise is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a longitudinal sectional view of a multi-stage pressure reducing and noise reducing regulating valve disclosed in an embodiment of the application;

FIG. 2 is a cross-sectional view of a multi-cage combination, a noise reduction cage, and a pressure sleeve combination for staged depressurization in the multi-stage depressurization noise reduction regulating valve shown in FIG. 1;

fig. 3 is a front view of a multi-cage combination structure, a noise reduction cage and a pressing sleeve combination for staged pressure reduction in the multi-stage pressure reduction and noise reduction regulating valve shown in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1-3, the multi-stage pressure-reducing and noise-reducing regulating valve disclosed in the embodiment of the present application is formed by assembling a valve cover 1, a valve rod 2, a valve core 3, a pressure sleeve 4, a valve cage composite structure 5 for reducing pressure in stages, and a valve seat 6 on a valve body 7, and further comprises:

the noise reduction valve cage 8 is arranged in the valve body 7; the noise reduction valve cage 8 is a hollow cylinder, a plurality of outflow holes 81 for circulating media are uniformly distributed on the side wall of the noise reduction valve cage 8, one end of the noise reduction valve cage 8 is designed and fixed according to the hole diameter, arrangement and quantity of the outflow holes 81 and is welded at the lower end of the pressing sleeve 4, and the other end of the noise reduction valve cage 8 is installed on the valve seat 6; the noise reduction valve cage 8 is positioned on the outer side of the valve cage combined structure 5 with the step reduction pressure, and a cylindrical space is formed between the noise reduction valve cage 8 and the valve cage combined structure 5 with the step reduction pressure.

As shown in fig. 1 and 2, one end of the stepped-down valve cage assembly 5 is welded to the lower end of the pressing sleeve 4, the other end of the stepped-down valve cage assembly 5 is mounted on the valve seat 6, and the stepped-down valve cage assembly 5 is surrounded by the noise reduction valve cage 8, so that the noise reduction valve cage 8 is located outside the stepped-down valve cage assembly 5 and forms a cylindrical space with the stepped-down valve cage assembly 5.

In the embodiment of the application, the noise reduction valve cage is combined with the valve cage combined structure for stepped pressure reduction, so that the static pressure distribution of the compressible fluid medium in the throttling hole is in a stepped pressure reduction form, and the flow capacity and the regulation performance of the regulating valve under a high pressure reduction condition are improved. Furthermore, media flow out from the throttling hole of the valve cage combination structure with the step-down pressure, and the media can collide the inner wall of the noise reduction valve cage through the space between the noise reduction valve cage and the valve cage combination structure with the step-down pressure, so that the media can be divided into a plurality of small-diameter flow bundles to flow out of the outflow hole of the noise reduction valve cage, the conversion efficiency of kinetic energy to sound energy is reduced, and the noise is reduced.

In the embodiment of the present application, the noise reduction cage 8 is a hollow cylinder with small holes (i.e., the outflow holes 81) distributed therein, and one end of the noise reduction cage is welded to the lower end of the pressing sleeve 4 and is disposed outside the stepped pressure reduction cage assembly 5, so as to form a cylindrical space with the stepped pressure reduction cage assembly 5. When the compressible fluid passes through the orifice 51 of the staged pressure reduction cage assembly 5, the outlet velocity is still high and the noise is typically high, and the noise reduction cage 8 will act to reduce the noise. The process is that the medium flows out from the throttle hole 51 of the valve cage combination structure 5 with the step pressure reduced, and the medium passes through the space between the valve cage combination structure 5 with the noise reduction valve cage 8 with the step pressure reduced, collides with the inner wall of the noise reduction valve cage 8, and is divided into a plurality of small-diameter flow bundles which flow out of the outflow hole 81 (belonging to a throttle hole) of the noise reduction valve cage 8. The medium forms a turbulent mixing area in the space between the valve cage composite structure 5 with the stepped pressure reduction and the noise reduction valve cage 8, and the conversion of the kinetic energy of the compressible fluid to the internal energy is accelerated in the turbulent mixing area, so that the fluid speed is effectively reduced; and then passes through the small holes (namely the outflow holes 81) of the noise reduction valve cage 8 to form a plurality of small-diameter flow beams, so that the conversion efficiency from kinetic energy to sound energy is reduced, the sound energy is reduced, and the purpose of reducing the noise value is achieved.

In summary, the multistage pressure-reducing and noise-reducing regulating valve disclosed in the embodiment of the present application can improve the flow capacity and the regulating performance of the regulating valve and reduce noise under the condition of high pressure difference compressible fluid.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (1)

1. The utility model provides a governing valve of making an uproar falls in multistage step-down, is assembled on the valve body by valve gap, valve rod, case, pressure cover, the valve cage integrated configuration and the disk seat that step-down in grades and forms, its characterized in that still includes:

the noise reduction valve cage is arranged in the valve body; the noise reduction valve cage is a hollow cylinder, a plurality of outflow holes for circulating media are uniformly distributed on the side wall of the noise reduction valve cage, and the hole diameters, arrangement and number of the outflow holes are designed and customized according to requirements;

one end of the noise reduction valve cage is welded at the lower end of the pressing sleeve, and the other end of the noise reduction valve cage is installed on the valve seat; the noise reduction valve cage is positioned on the outer side of the valve cage combined structure with the step-by-step pressure reduction, and a cylindrical space is formed between the noise reduction valve cage and the valve cage combined structure with the step-by-step pressure reduction.

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