CN214305306U - High-pressure high-precision multi-stage pressure reduction control valve - Google Patents
High-pressure high-precision multi-stage pressure reduction control valve Download PDFInfo
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- CN214305306U CN214305306U CN202023050147.1U CN202023050147U CN214305306U CN 214305306 U CN214305306 U CN 214305306U CN 202023050147 U CN202023050147 U CN 202023050147U CN 214305306 U CN214305306 U CN 214305306U
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Abstract
The utility model discloses a high-pressure high-precision multi-level pressure reduction control valve, which comprises a valve body, a valve seat assembly, a core rod assembly, a sleeve assembly and a valve cover, wherein the valve cover is arranged on the valve body; the sleeve component comprises a guide sleeve, an inner cage and an outer cage, the inner cage is sleeved on the guide sleeve, the outer cage is sleeved on the inner cage, and a plurality of noise reduction holes are uniformly distributed in the guide sleeve, the inner cage and the outer cage respectively. The utility model discloses a high-pressure high accuracy multistage pressure reduction control valve through set up a plurality of holes of making an uproar of falling on sleeve subassembly, forms the layer of making an uproar of making a uproar of multistage step-down, every grade 3 ~ 4MPa that can step down to can effective attenuation noise 15 ~ 20dB, guarantee that noise overall standard is less than or equal to 85 dB.
Description
Technical Field
The utility model relates to a high-pressure high accuracy multistage pressure reduction control valve belongs to the control valve field.
Background
The traditional high-pressure control valve mainly comprises a valve body, a valve cover, a valve core, a valve rod, a sleeve, a filler, a gasket and other parts. One end of the valve body is provided with an inlet, and the other end is provided with an outlet. The periphery of the sleeve is provided with windows with different shapes, and the number of the windows of the sleeve can be four, six or more according to the requirement of the flow capacity. The valve core can move up and down in the sleeve by utilizing the sleeve guide. The structure of the high-pressure sleeve valve is old, under the severe working conditions of high pressure difference and high flow rate, the adjusting precision is poor, the pressure reduction and noise reduction effects are not ideal, the noise is large, the leakage amount is large, and the service life is short.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a high-pressure high accuracy multistage pressure reduction control valve improves the regulation precision, reaches reduction pressure difference and noise, extension product life's purpose.
In order to achieve the purpose, the utility model discloses a high-pressure high-precision multistage pressure reduction control valve, including valve body, valve seat subassembly, core bar subassembly, sleeve subassembly and valve gap, the valve gap is installed on the valve body, and one end of valve body is equipped with the import, and the other end is equipped with the export, and the valve seat subassembly is installed between the import and the export of valve body, the sleeve subassembly is installed on the valve seat subassembly, and the core bar subassembly is installed on the sleeve subassembly and the core bar subassembly can carry out the straight reciprocating motion of upper and lower direction along the internal surface of sleeve subassembly and valve seat subassembly;
the sleeve component comprises a guide sleeve, an inner cage and an outer cage, the inner cage is sleeved on the guide sleeve, the outer cage is sleeved on the inner cage, and a plurality of noise reduction holes are uniformly distributed in the guide sleeve, the inner cage and the outer cage respectively.
As an improvement, the valve seat assembly comprises a valve seat and a bottom plate, the bottom plate is welded on the valve seat, and a plurality of noise reduction holes are uniformly distributed in the valve seat.
As an improvement, a winding pad I is arranged between the valve seat and the valve body.
As an improvement, the noise reduction holes are respectively annularly arranged on the guide sleeve, the inner cage, the outer cage and the valve seat.
As an improvement, the core rod assembly comprises a valve rod and a valve core, and the valve core is installed at the end part of the valve rod through a cylindrical pin I.
As an improvement, a packing pad, a spacer bush, a packing pressing sleeve and a round nut are sequentially arranged between the valve rod and the valve cover from bottom to top, and a nut II is arranged at the end part of the valve rod.
As an improvement, the valve cover is fastened on the valve body through a full-thread stud and a nut I, and a winding pad II is arranged between the valve cover and the valve body.
As an improvement, the guide sleeve, the inner cage and the outer cage are provided with cylindrical pins II.
Compared with the prior art, the utility model discloses a high-pressure high accuracy multistage pressure reduction control valve forms the multistage layer of making an uproar that falls that steps down through seting up a plurality of holes of making an uproar that fall on sleeve subassembly, can step down 3 ~ 4MPa at every level to can effective attenuation noise 15 ~ 20dB, guarantee that noise overall standard is less than or equal to 85 dB.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the core rod assembly of the present invention;
FIG. 3 is a schematic structural view of a sleeve assembly according to the present invention;
fig. 4 is a schematic structural view of the guide sleeve of the present invention;
FIG. 5 is an expanded view (rotated 90) of FIG. 4 from direction A;
FIG. 6 is a schematic structural view of the middle and outer cages of the present invention;
FIG. 7 is a view developed from the direction B of FIG. 6;
FIG. 8 is a schematic structural view of the inner cage of the present invention;
FIG. 9 is a view developed from the direction C of FIG. 8;
fig. 10 is a schematic structural view of a valve seat assembly according to the present invention;
FIG. 11 is a view expanded toward D in FIG. 10;
in the figure: 1. the valve comprises a valve body, 2, winding pads I and 3, a valve seat assembly, 3-1, a valve seat, 3-2, a bottom plate, 4, a core rod assembly, 4-1, a valve rod, 4-2, cylindrical pins I and 4-3, a valve core, 5, a sleeve assembly, 5-1, a guide sleeve, 5-2, an inner cage, 5-3, an outer cage, 5-4, cylindrical pins II and 6, winding pads II and 7, a valve cover, 8, a full-thread stud, 9, nuts I and 10, a packing pad, 11, a spacer sleeve, 12, packing, 13, a packing pressing sleeve, 14, a round nut, 15, nuts II and 16, a noise reduction hole, 17 and a pin hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
As shown in fig. 1, a high-pressure high-precision multi-stage pressure reduction control valve comprises a valve body 1, a valve seat assembly 3, a core rod assembly 4, a sleeve assembly 5 and a valve cover 7, wherein the valve cover 7 is installed on the valve body 1, one end of the valve body 1 is provided with an inlet, the other end of the valve body 1 is provided with an outlet, the valve seat assembly 3 is installed between the inlet and the outlet of the valve body 1, the sleeve assembly 5 is installed on the valve seat assembly 3, the core rod assembly 4 is installed on the sleeve assembly 5, and the core rod assembly 4 can perform linear reciprocating movement in the up-and-down direction along the inner surfaces of the sleeve assembly 5 and the valve seat assembly 3;
as shown in fig. 3, 4, 5, 6, 7, 8 and 9, the sleeve assembly 5 includes a guide sleeve 5-1, an inner cage 5-2 and an outer cage 5-3, the inner cage 5-2 is sleeved on the guide sleeve 5-1, the outer cage 5-3 is sleeved on the inner cage 5-2, a plurality of noise reduction holes 16 are respectively uniformly distributed on the guide sleeve 5-1, the inner cage 5-2 and the outer cage 5-3, and the noise reduction holes 16 on the guide sleeve 5-1, the inner cage 5-2 and the outer cage 5-3 are respectively arranged in a staggered manner. In addition, the guide sleeve 5-1, the inner cage 5-2 and the outer cage 5-3 are also provided with pin holes 17, which is convenient for connecting and installing the inner cage and the outer cage. The utility model discloses a multistage hole sleeve structure of making an uproar that falls, it is advanced reasonable, close tightly, can make high-pressure fluid step by step and step down many times, can the velocity of flow of control, noise reduction, resistant erodeing, long service life.
As an improvement of the embodiment, as shown in fig. 10 and 11, the valve seat assembly 3 includes a valve seat 3-1 and a bottom plate 3-2, the bottom plate 3-2 is welded on the valve seat 3-1, and a plurality of noise reduction holes 16 are uniformly distributed on the valve seat 3-1. Furthermore, a winding pad I2 is arranged between the valve seat 3-1 and the valve body 1.
As a modification of the embodiment, the noise reduction holes 16 are respectively arranged on the guide sleeve 5-1, the inner cage 5-2, the outer cage 5-3 and the valve seat 3-1 in a ring shape, and the noise reduction holes 16 on each component are symmetrically arranged. Wherein, the noise reduction holes 16 on the guide sleeve 5-1, the inner cage 5-2, the outer cage 5-3 and the valve seat 3-1 select different noise reduction apertures according to the difference of the Cv values. The utility model discloses a make an uproar hole 16 of making an uproar falls in a plurality of symmetries on uide bushing 5-1, interior cage 5-2, outer cage 5-3 and disk seat 3-1 respectively to the size, quantity, the position and the range of falling the hole 16 of making an uproar carry out detailed accurate three-dimensional simulation and calculation. The noise reduction holes 16 are properly spaced and arranged, so that the flow velocity of a medium can be effectively controlled, sound waves collide with each other before entering the noise reduction holes 16, energy is consumed, and the fluid pressure is reduced, thereby achieving the purposes of reducing pressure and noise, enabling the leakage grade to meet the IV, V and VI grade leakage requirements in the GB/T4213 standard, and expanding the application range of the valve.
As a modification of the embodiment, as shown in FIG. 2, the core rod assembly 4 comprises a valve rod 4-1 and a valve core 4-3, and the valve core 4-3 is mounted at the end of the valve rod 4-1 through a cylindrical pin I4-2. When the valve core 4-3 moves up and down on the inner surfaces of the sleeve component 5 and the valve seat component 3, the flow cross section area of the fluid can be changed, and the functions of adjusting the fluid flow and controlling the pressure are realized.
As an improvement of the embodiment, a packing pad 10, a spacer 11 and a packing 12 (such as a high-pressure steel wire flexible graphite packing) are sequentially arranged between the valve rod 4-1 and the valve cover 7 from bottom to top. The packing pressing sleeve 13 and the round nut 14, the nut II 15 is installed at the end part of the valve rod 4-1, and the upper end of the valve rod 4-1 can be matched and connected with an actuating mechanism, such as a pneumatic piston type actuating mechanism, a manual actuating mechanism, an electric actuating mechanism and other similar driving devices and accessories.
As the improvement of embodiment, valve gap 7 passes through full thread double-screw bolt 8 and nut I9 fastening on valve body 1, and the dismouting is convenient, installs winding pad II 6 between valve gap 7 and the valve body 1, improves connection performance between the two.
As an improvement of the embodiment, the guide sleeve 5-1, the inner cage 5-2 and the outer cage 5-3 are provided with cylindrical pins II 5-4, so that the structural design is reasonable, and the installation is convenient and fast.
The utility model discloses a high-pressure high accuracy multistage pressure reduction control valve, the bore: DN50, pressure rating: CL2500, rated Cv value: 11, flow rate characteristics: equal percentage, linear, stroke: 25, operating temperature: -17 to +230 ℃, medium flow direction: and flows away.
When the valve core is opened, medium fluid firstly passes through the valve seat 3-1 with the noise reduction hole, after the medium flows in from the cylindrical end with the hole, energy of the medium can be partially offset at the middle position, then the medium flows out from the throttling port of the valve seat 3-1 after being subjected to primary pressure reduction rectification, and then sequentially passes through the noise reduction hole of the guide sleeve 5-1, the noise reduction hole of the inner cage 5-2 and the noise reduction hole of the outer cage 5-3, and the pressure is reduced step by step and the medium energy is consumed, so that the fluid reaches the required pressure reduction standard when reaching the outlet of the valve.
The utility model discloses a high-pressure high accuracy multistage pressure reduction control valve, through set up a plurality of holes of making an uproar of falling on sleeve subassembly, disk seat 3-1, form the layer of making an uproar of multistage step-down, every grade can step down 3 ~ 4MPa to can effective attenuation noise 15 ~ 20dB, guarantee that noise overall standard is less than or equal to 85 dB. The utility model discloses use standardization, commonality, interchangeability as the principle, adopt three-dimensional design software to carry out the optimal design to the fluid passage structure of valve, ensure that the circulation ability is big, the precision of chipware flow characteristic curve is high, the action is sensitive, the regulation performance is superior, and the minimum two thousandths that can reach of regulation control precision.
The utility model discloses a high-pressure high accuracy multistage pressure reduction control valve, spare part interchangeability is good, and the fragile spare part is few, and the installation is dismantled conveniently, maintains simply. According to the actual working conditions, carbon steel, stainless steel (such as hastelloy, monel, titanium and titanium Alloy, Inconel Alloy, Alloy 20 stainless steel, duplex stainless steel) and other materials can be adopted.
The utility model is suitable for a require high-pressure fluid operating mode occasion that the accurate control adjusted in trades such as petrochemical industry, metallurgy, natural gas. Can partially or completely replace similar products imported from abroad, and accords with the current national encouragement policy on the localization of industrial equipment.
The above description is only exemplary of the invention, and should not be taken as limiting the invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the invention should be included in the scope of the invention.
Claims (8)
1. A high-pressure high-precision multi-stage pressure reduction control valve comprises a valve body (1), a valve seat assembly (3), a core rod assembly (4), a sleeve assembly (5) and a valve cover (7), wherein the valve cover (7) is installed on the valve body (1), one end of the valve body (1) is provided with an inlet, the other end of the valve body is provided with an outlet, the valve seat assembly (3) is installed between the inlet and the outlet of the valve body (1), the sleeve assembly (5) is installed on the valve seat assembly (3), the core rod assembly (4) is installed on the sleeve assembly (5), and the core rod assembly (4) can linearly reciprocate in the vertical direction along the inner surfaces of the sleeve assembly (5) and the valve seat assembly (3);
the noise reduction sleeve is characterized in that the sleeve assembly (5) comprises a guide sleeve (5-1), an inner cage (5-2) and an outer cage (5-3), the inner cage (5-2) is sleeved on the guide sleeve (5-1), the outer cage (5-3) is sleeved on the inner cage (5-2), and a plurality of noise reduction holes (16) are uniformly distributed in the guide sleeve (5-1), the inner cage (5-2) and the outer cage (5-3) respectively.
2. The high-pressure high-precision multistage pressure reduction control valve according to claim 1, characterized in that the valve seat assembly (3) comprises a valve seat (3-1) and a bottom plate (3-2), the bottom plate (3-2) is welded on the valve seat (3-1), and a plurality of noise reduction holes (16) are uniformly distributed on the valve seat (3-1).
3. A high-pressure high-precision multistage pressure reducing control valve according to claim 2, characterized in that a wound gasket i (2) is installed between the valve seat (3-1) and the valve body (1).
4. A high-pressure high-precision multistage pressure reducing control valve according to claim 1 or 2, characterized in that the noise reduction holes (16) are arranged annularly on the guide sleeve (5-1), the inner cage (5-2), the outer cage (5-3) and the valve seat (3-1), respectively.
5. The high-pressure high-precision multi-stage pressure reduction control valve according to claim 1, characterized in that the core rod assembly (4) comprises a valve rod (4-1) and a valve core (4-3), and the valve core (4-3) is installed at the end part of the valve rod (4-1) through a cylindrical pin I (4-2).
6. The high-pressure high-precision multi-stage pressure reducing control valve according to claim 5, characterized in that a packing pad (10), a spacer bush (11), a packing (12), a packing pressing bush (13) and a round nut (14) are sequentially arranged between the valve rod (4-1) and the valve cover (7) from bottom to top, and a nut II (15) is arranged at the end part of the valve rod (4-1).
7. The high-pressure high-precision multistage pressure reduction control valve according to claim 1, characterized in that the valve cover (7) is fastened on the valve body (1) through a full-thread stud (8) and a nut I (9), and a winding pad II (6) is arranged between the valve cover (7) and the valve body (1).
8. The high-pressure high-precision multistage pressure reduction control valve according to claim 1, characterized in that cylindrical pins II (5-4) are mounted on the guide sleeve (5-1), the inner cage (5-2) and the outer cage (5-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023050147.1U CN214305306U (en) | 2020-12-17 | 2020-12-17 | High-pressure high-precision multi-stage pressure reduction control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023050147.1U CN214305306U (en) | 2020-12-17 | 2020-12-17 | High-pressure high-precision multi-stage pressure reduction control valve |
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| Publication Number | Publication Date |
|---|---|
| CN214305306U true CN214305306U (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023050147.1U Active CN214305306U (en) | 2020-12-17 | 2020-12-17 | High-pressure high-precision multi-stage pressure reduction control valve |
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|---|---|
| CN (1) | CN214305306U (en) |
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