CN115854131A - Flow control device with linearly adjustable flow area - Google Patents
Flow control device with linearly adjustable flow area Download PDFInfo
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- CN115854131A CN115854131A CN202211627799.8A CN202211627799A CN115854131A CN 115854131 A CN115854131 A CN 115854131A CN 202211627799 A CN202211627799 A CN 202211627799A CN 115854131 A CN115854131 A CN 115854131A
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- sleeve assembly
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Abstract
The invention provides a flow control device with a linearly adjustable flow area, which comprises an inner sleeve assembly, an intermediate sleeve assembly and an outer sleeve assembly, wherein the intermediate sleeve assembly is sleeved on the outer side of the inner sleeve assembly, the outer sleeve assembly is sleeved on the outer side of the intermediate sleeve assembly, the inner sleeve assembly and the outer sleeve assembly can axially slide mutually, a plurality of overflowing gap sections are arranged on the wall of one end of the inner sleeve assembly, which is positioned in the intermediate sleeve assembly, and an outer circumferential surface entity of the overflowing gap sections and the inner wall surface of the intermediate sleeve assembly form two sections of a flowing section and a non-flowing section by virtue of a third sealing ring arranged on the inner wall surface of the intermediate sleeve assembly; a second sealing ring is arranged between one end of the middle sleeve assembly, which is far away from the overflowing gap section, and the inner sleeve assembly, and a fourth sealing ring is arranged between the middle sleeve and the outer sleeve assembly. The invention can make the controlled stroke and the flow area completely linear, is easy to manufacture and install, has low cost, good universality and long service life, and can meet the requirement of accurate control of flow.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a flow control device with a linearly adjustable flow area.
Background
Flow regulation and control are indispensable important key technologies in numerous fields such as fluid machinery, hydraulic machinery, water meter measurement and verification, among numerous flow influence factors, the flow area and the controlled stroke have direct influence, and the flow control valves widely used at present, such as a spherical valve, a V-shaped valve, a double-V-shaped valve and the like, cannot realize the linear relation between the controlled stroke and the flow area, so that the controlled stroke is changed the same, the change value of the flow area is greatly different, the flow control precision is low and the stability is poor; although the irregular valve member similar to the ellipse can approximately realize the approximate linear relation between the flow area and the controlled stroke, the irregular valve member is high in manufacturing cost, poor in universality, low in service life and incapable of being popularized and used.
Disclosure of Invention
The invention aims to provide a flow control device with linearly adjustable flow area, which can ensure that the controlled stroke and the flow area are completely linear, is easy to manufacture and install, has low cost, good universality and long service life, and can meet the requirement of accurate control of flow.
According to the purpose of the invention, the invention provides a flow control device with a linearly adjustable flow area, which comprises an inner sleeve assembly, a middle sleeve assembly and an outer sleeve assembly, wherein the middle sleeve assembly is sleeved on the outer side of the inner sleeve assembly, the outer sleeve assembly is sleeved on the outer side of the middle sleeve assembly, the inner sleeve assembly and the outer sleeve assembly can axially slide mutually, a plurality of flow gap sections are arranged on the wall of one end, positioned in the middle sleeve assembly, of the inner sleeve assembly, the outer circumferential surface entity of each flow gap section and the inner wall surface of the middle sleeve assembly form two sections capable of flowing and incapable of flowing through by means of a third sealing ring arranged on the inner wall surface of the middle sleeve assembly, a second sealing ring is arranged between one end, far away from the flow gap sections, of the middle sleeve assembly and the inner sleeve assembly, and a fourth sealing ring is arranged between the middle sleeve and the outer sleeve assembly.
Further, during the relative axial sliding between the intermediate sleeve assembly and the inner sleeve assembly, the fluid flow area and the axial movement amount of the intermediate sleeve assembly are in a linear relationship.
Further, when meeting the flow cross section condition such as fluid:
a) The total angle theta (unit: degree, θ = ∑ θ i ，θ i Included angle between two radial side surfaces of a single overflowing gap), overflowing inner diameter d of the inner sleeve and axial overflowing gap along axial length L
b) The inner diameter D of the outer sleeve assembly and the outer diameter D of the middle sleeve assembly 1 Inner sleeve over-current inner diameter d of the inner sleeve
Further, the inner sleeve assembly, the middle sleeve assembly and the outer sleeve assembly are all cylindrical structures.
Further, the inner sleeve assembly comprises an inner sleeve body, and one end of the inner sleeve body is fixedly connected with the liquid inlet pipe.
Furthermore, the end of one end of the inner sleeve component, which is positioned in the middle sleeve component, is a closed end, and a first sealing ring is arranged on the outer circumferential surface of the inner sleeve component between the closed end of the inner sleeve component and the overflowing gap section.
Further, the middle sleeve assembly is made of polytetrafluoroethylene materials.
Furthermore, a first dust ring is further arranged between one end, far away from the overflowing gap section, of the middle sleeve assembly and the inner sleeve assembly.
Furthermore, a piston boss is arranged at the middle section of the middle sleeve assembly, the piston boss is provided with the fourth sealing ring, and the fourth sealing ring can prevent liquid from flowing out through a gap between the outer circumferential surface of the middle sleeve assembly and the inner circumferential surface of the outer sleeve assembly.
Furthermore, a flange is arranged at one end, far away from the overflowing gap section of the inner sleeve assembly, of the outer sleeve assembly, and a second dust ring is arranged at the matching position of an inner hole of the flange and the middle sleeve assembly.
The technical scheme of the invention can ensure that the controlled stroke and the through flow area are completely linear, and the device has the advantages of easy manufacture and installation, low cost, good universality and long service life, and meets the requirement of accurate control of flow; along with the gradual improvement of automation requirements, the flow control becomes a key technology of accurate control in many situations, and the flow control device for linearly adjusting the flow area is bound to be widely applied to equipment in the field and can radiate to other industries to generate considerable economic and social benefits.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an inner sleeve assembly according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of B-B in FIG. 2 according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of an intermediate sleeve assembly according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4A according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 4 at B according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an outer sleeve assembly according to an embodiment of the present invention;
description of reference numerals:
in the figure, 1-an inner sleeve assembly, 2-a middle sleeve assembly, 3-an outer sleeve assembly, 4-a total water inlet, 5-an inner sleeve body, 6-an overflowing gap section, 7-a first sealing ring, 8-a left end cylinder body, 9-a piston boss, 10-a third sealing ring, 11-a first dust-proof ring, 12-a second sealing ring, 13-a fourth sealing ring, 14-a second dust-proof ring, 15-a flange and 16-a total liquid outlet pipe orifice.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1-7:
a flow control device with a linearly adjustable flow area comprises an inner sleeve assembly 1, a middle sleeve assembly 2 and an outer sleeve assembly 3, wherein the inner sleeve assembly 1, the middle sleeve assembly 2 and the outer sleeve assembly 3 are all in a cylindrical structure; the middle sleeve component 2 is sleeved on the outer side of the inner sleeve component 1, and the outer sleeve component 3 is sleeved on the outer side of the middle sleeve component 2.
The inner sleeve assembly 1 comprises an inner sleeve body 5, a total water inlet 4 at the left end of the inner sleeve body 5 is fixedly connected with a liquid inlet pipe, a plurality of flow-through gap sections 6 are arranged on the wall of the other end of the inner sleeve body 5, the entity of the outer circumferential surface of each flow-through gap section 6 and the inner wall surface of the middle sleeve assembly 2 form two sections which can be flowed through and cannot be flowed through by means of a third sealing ring 10 arranged on the inner wall surface of the middle sleeve assembly 2, and the occupied sizes of the two sections change along with the axial relative movement of the middle sleeve assembly 2 and the inner sleeve assembly 1, and in the change, the flow-through area of the fluid and the axial movement amount of the controlled middle sleeve assembly 2 are in a linear relation;
the size occupied by the two sections is changed along with the movement of the intermediate sleeve component 2 and the inner sleeve component 1, and the fluid flow area and the axial movement amount of the controlled intermediate sleeve component 2 are always in a linear relation in the change. When the flow cross section conditions of fluid and the like are met:
1) The total angle theta (unit: degree, θ = ∑ θ i ，θ i Included angle between two radial side surfaces of a single overflowing gap), overflowing inner diameter d of the inner sleeve, and axial overflowing gap length L along the axial direction
2) The inner diameter D of the outer sleeve assembly and the outer diameter D of the middle sleeve assembly 1 Inner sleeve over-current inner diameter d of the inner sleeve
The liquid enters through the main water inlet 4 of the inner sleeve component 1, flows into the inner cavity of the outer sleeve component 3 from the overflowing gap section 6 through the right side of the third sealing ring 10, and finally flows out from the main liquid outlet pipe orifice 16 of the outer sleeve component 3. The other shaft sections of the inner sleeve assembly 1 except the overflowing gap section 6 are all internally and externally non-communicated tube sections, and the right end head of the inner sleeve assembly 1 is a closed end; a sealing notch is formed in the outer circumferential surface of the inner sleeve component 1 between the closed end of the inner sleeve component 1 and the overflowing gap section 6, a first sealing ring 7 can be installed, and the inner surface of the right end of the middle sleeve component 2 tightly presses the first sealing ring 7 to cut off liquid flow;
the middle sleeve component 2 is made of polytetrafluoroethylene materials except for a sealing ring and a dustproof ring; the inner surface of the left end cylinder 8, which is matched with the inner sleeve component 1, of the middle sleeve component 2 is provided with two notches in which a dustproof ring and a sealing ring can be arranged, the inner notch is provided with a second sealing ring 12, the outer notch is provided with a first dustproof ring 11, the second sealing ring 12 can prevent liquid flow from flowing out from the overflowing gap section 6 of the inner sleeve component 1 through the annular gap between the inner sleeve component 1 and the middle sleeve component 2, and the first dustproof ring 11 can prevent external dust from entering controlled liquid flow;
a notch for installing a sealing ring is arranged on the inner hole surface of the right cylinder body of the middle sleeve assembly 2 matched with the inner sleeve assembly 1, and a third sealing ring 10 is arranged in the notch, wherein the third sealing ring 10 can prevent liquid flow from flowing out from a gap between the inner sleeve assembly 1 and the middle sleeve assembly 2;
a piston boss 9 is arranged at the position of the middle sleeve component 2 close to the middle section, a notch is arranged on the piston boss 9 along the circumferential direction, a fourth sealing ring 13 is arranged in the notch, and the sealing can prevent liquid flow from flowing out through a gap between the outer circumferential surface of the middle sleeve component 2 and the inner circumferential surface of the outer sleeve component 3;
the outer sleeve component 3 is provided with a flange 15 near the left end of the inner sleeve component 1, the flange 15 is used for realizing the fixed connection between the outer sleeve component 3 and external equipment, and a second dust ring 14 is arranged at the matching part of the inner hole of the outer flange 15 and the middle sleeve component 2, so that dust can be prevented from entering from the annular gap between the inner hole of the outer flange 15 and the middle sleeve component 2.
The invention can make the controlled stroke and the flow area completely linear, and the device is easy to manufacture and install, low in cost, good in universality and long in service life, and can realize the accurate control of the flow area. Along with the gradual improvement of automation requirements, the flow control becomes a key technology for precise control under many situations, and the flow control device for linear adjustment of the flow area can be widely applied to equipment in the field and can radiate to other industries to generate considerable economic and social benefits.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a linear adjustable flow control device of through flow area, its characterized in that, includes interior sleeve subassembly, middle sleeve subassembly and outer sleeve subassembly, middle sleeve subassembly cover is established the outside of interior sleeve subassembly, outer sleeve subassembly cover is established the outside of middle sleeve subassembly, middle sleeve subassembly with interior sleeve subassembly and axial slip each other between the outer sleeve subassembly, interior sleeve subassembly is located set up a plurality of gap sections that flow through on the section of thick bamboo wall of one end in the middle sleeve subassembly, flow through gap section outer circumferential entity with middle sleeve subassembly internal face with the help of the third sealing washer of installing on the middle sleeve subassembly internal face constitutes can flow and can not flow two sections, middle sleeve subassembly is kept away from the one end that flows through the gap section with be equipped with the second sealing washer between the interior sleeve subassembly, middle sleeve with be equipped with the fourth sealing washer between the outer sleeve subassembly.
2. The linearly adjustable flow area flow control device of claim 1 wherein the fluid flow area during axial sliding movement between said intermediate sleeve assembly and said inner sleeve assembly is linearly related to the amount of axial movement of said intermediate sleeve assembly.
3. A linear flow area adjustable flow control device according to claim 2, wherein when the flow area condition is satisfied:
a) The sum of included angles theta, theta = ∑ theta of two radial side surfaces of axial flow passing gap i ，θ i The included angle of two radial side surfaces of a single overflowing gap, the overflowing inner diameter d of the inner sleeve and the axial overflowing gap along the axial length L should meet the requirements
b) The inner diameter D of the outer sleeve assembly and the outer diameter D of the middle sleeve assembly 1 Inner sleeve over-current inner diameter d of the inner sleeve
4. The linearly adjustable flow area flow control device of claim 1 wherein said inner sleeve assembly, said intermediate sleeve assembly and said outer sleeve assembly are each of cylindrical configuration.
5. A linearly adjustable flow area control device according to claim 1 wherein said inner sleeve member includes an inner sleeve body having one end fixedly connected to an inlet pipe.
6. The linear flow area adjustable flow control device according to claim 1, wherein one end of said inner sleeve assembly located in said middle sleeve assembly is a closed end, and a first sealing ring is disposed on the outer circumferential surface of said inner sleeve assembly between the closed end of said inner sleeve assembly and said flow passage gap section.
7. A linearly adjustable flow area control device according to claim 1 wherein said intermediate sleeve assembly is fabricated from a polytetrafluoroethylene material.
8. The linear flow control device with adjustable flow area according to claim 1, wherein a first dust ring is further disposed between one end of the intermediate sleeve assembly, which is far away from the flow gap section, and the inner sleeve assembly.
9. The linearly adjustable flow control device of claim 1, wherein a piston boss is provided at a middle position of the intermediate sleeve assembly, the piston boss being provided with the fourth seal ring, the fourth seal ring being resistant to outflow of the fluid through a gap between the outer circumferential surface of the intermediate sleeve assembly and the inner circumferential surface of the outer sleeve assembly.
10. A linearly adjustable flow control device according to claim 1 wherein the outer sleeve assembly is provided with a flange at an end remote from the inner sleeve assembly flow gap section, the flange bore being fitted with a second wiper ring at the intermediate sleeve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211627799.8A CN115854131A (en) | 2022-12-16 | 2022-12-16 | Flow control device with linearly adjustable flow area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211627799.8A CN115854131A (en) | 2022-12-16 | 2022-12-16 | Flow control device with linearly adjustable flow area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115854131A true CN115854131A (en) | 2023-03-28 |
Family
ID=85673851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211627799.8A Pending CN115854131A (en) | 2022-12-16 | 2022-12-16 | Flow control device with linearly adjustable flow area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115854131A (en) |
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2022
- 2022-12-16 CN CN202211627799.8A patent/CN115854131A/en active Pending
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