CN105570504A - Adjustable limit valve - Google Patents
Adjustable limit valve Download PDFInfo
- Publication number
- CN105570504A CN105570504A CN201610178121.4A CN201610178121A CN105570504A CN 105570504 A CN105570504 A CN 105570504A CN 201610178121 A CN201610178121 A CN 201610178121A CN 105570504 A CN105570504 A CN 105570504A
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- CN
- China
- Prior art keywords
- valve body
- valve core
- lower valve
- upper valve
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a limit valve, and in particular relates to an adjustable limit valve. The limit valve comprises an upper valve body, a lower valve body, a spring seat, an upper valve core, a lower valve core and an adjusting nut, wherein the lower valve body is arranged on the upper valve body by threads, step holes are respectively formed in the upper valve body and the lower valve body, the upper valve core is arranged in the step hole of the upper valve body by the spring seat and an upper spring, and the lower valve core is arranged in the step hole of the lower valve body by a lower spring seat and the adjusting nut. The adjustable limit valve is simple in structure and low in machining and manufacturing cost, and can be closed when the flow in a pipeline is excessively large or small, so that the outflow amount of a liquid medium is kept in a set range, and production requirements in a petrochemical industry can be met.
Description
Technical field
The present invention relates to a kind of flow-limiting valve, be specifically related to a kind of adjustable flow-limiting valve.
Background technique
In the pipeline of conveying fluid, the flow of fluid is mainly stressed effect, and when pressure change, flow can change, and particularly when conduit entrance pressure increases suddenly, the flow of fluid increase can may cause damage to some facility in pipeline suddenly.If pressure reduces, flow reduces, and easily causes damage or wastes when cannot meet Production requirement.The adjustable flow-limiting valve of this flow is installed and can meets specific Production requirement by guaranteed flow.Such as, in shale gas recovery process, if the change of strata pressure can cause flow in flow string to change, this flow-limiting valve according to the automatic conducting of flow and can close runner, prevent production facility from being damaged and the leakage of output object, make the flow of output gas more even, be easy to collect.But flow-limiting valve function singleness in the market, does not possess the function that limit for height is simultaneously low with limit; Must high-voltage and current-limitation valve and current limiting low-voltage valve be connected on pipeline for this reason, the fluid of the fluid of high flow rate high pressure and low flow velocity low-pressure just can be made all not by pipeline, thus meet the needs of special station production and application.Adopt the mode of high-voltage and current-limitation valve and the series connection of current limiting low-voltage valve, though meet need of production, having the high problem with installing and using inconvenience of manufacture cost, being not suitable for the demand that business economicization uses.Therefore be necessary that research and development are a and limit for height can limit low flow-limiting valve again, the high problem with installing and using inconvenience of manufacture cost had during to solve high-voltage and current-limitation valve and current limiting low-voltage valve series connection use, to meet the needs that enterprise uses.
Summary of the invention
The object of the invention is to: provide one just can only open in specific range of flow, and range of flow can carry out the adjustable flow-limiting valve that sets according to actual needs.
Technological scheme of the present invention is:
A kind of adjustable flow-limiting valve, comprises upper valve body, lower valve body, spring seat, upper valve core, lower valve core and adjusting nut; It is characterized in that: on upper valve body, screw thread is provided with lower valve body; Be respectively arranged with shoulder hole in upper valve body and lower valve body, in the shoulder hole of upper valve body, by spring seat and upper spring, upper valve core be installed, in the shoulder hole of lower valve body, by lower spring and adjusting nut, lower valve core is installed.
Seal ring is provided with between described upper valve body and lower valve body.
Defining flange is provided with in the shoulder hole of upper valve body.
Described upper valve core is goblet, upper valve core be circumferentially evenly equipped with multiple opening.
The goblet of described lower valve core to be cross section be " convex " shape; Lower valve core be circumferentially evenly equipped with multiple through hole.
Described opening and through hole quantity are respectively 4.
Described adjusting nut is connected with lower valve body screw thread.
Described spring seat is discoid; Spring seat lower surface intermediate portion is provided with installation base; The center portion of spring seat is provided with stair-stepping penetration hole.
The upper end of described penetration hole is hexagonal hole; Spring seat outside penetration hole is evenly equipped with multiple flowing hole, and flowing hole is communicated with penetration hole.
The invention has the advantages that:
This adjustable flow-limiting valve structure is simple, easy to use; When fluid flow excessive pressure is too high, lower valve core will seal lower valve body, hinders fluid to pass through; When the too small hypotony of fluid flow, obstruction fluid is passed through upper valve body by upper valve core.Realize the object that too high, the too low fluid of blocking-up flow velocity passes through thus; Solve existing flow-limiting valve function singleness, do not possess the problem of limit for height and limit low-function simultaneously, meet the needs that enterprise uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of upper valve body of the present invention;
Fig. 3 is the structural representation of lower valve body of the present invention;
Fig. 4 is the structural representation of upper valve core of the present invention;
Fig. 5 is the structural representation of lower valve core of the present invention;
Fig. 6 is the structural representation of spring seat of the present invention;
Fig. 7 is the plan structure schematic diagram of spring seat of the present invention.
In figure: 1, upper valve body, 2, lower valve body, 3, upper valve core, 4, lower valve core, 5, spring seat, 6, adjusting nut, 7, upper spring, 8, opening, 9, through hole, 10, penetration hole, 11, flowing hole, 12, installation base, 13, defining flange, 14, lower spring.
Embodiment
This adjustable flow-limiting valve comprises upper valve body 1, lower valve body 2, spring seat 5, upper valve core 3, lower valve core 4 and adjusting nut 6.On upper valve body 1, screw thread is provided with lower valve body 2; Seal ring is provided with between upper valve body 1 and lower valve body 2.Be respectively arranged with shoulder hole in upper valve body 1 and lower valve body 2, in the shoulder hole of upper valve body 1, by spring seat 5 and upper spring 7, upper valve core 3 be installed.Upper valve core 3 is goblet, upper valve core 3 be circumferentially evenly equipped with 4 openings 8.Spring seat 5 is discoid; Spring seat 5 lower surface intermediate portion is provided with installation base 12, for the assembling of upper spring 7; The center portion of spring seat 5 is provided with stair-stepping penetration hole 10; The upper end of penetration hole 10 is hexagonal hole.Spring seat 5 outside penetration hole 10 is evenly equipped with multiple flowing hole 11, and flowing hole 11 is communicated with penetration hole 10.Be provided with defining flange 13 in the shoulder hole of upper valve body 1, move radially to prevent upper valve core 3 at work.
By lower spring 14 and adjusting nut 6, lower valve core 4 is installed in the shoulder hole of lower valve body 2.Lower valve core 4 is the goblet of cross section in " convex " shape; Lower valve core 4 be circumferentially evenly equipped with 4 through holes 9.The object that lower valve core 4 is designed to " convex " shape is the assembling being convenient to lower spring 14.
The bottom of the upper valve core 3 of this adjustable flow-limiting valve and the top of lower valve core 4 are respectively the conical surface.Fully can contact with the shoulder hole of valve body at work, thus form metal sealing blocking-up runner.
The spring seat 5 of this adjustable flow-limiting valve is threaded with upper valve body 1, can increase or reduce the stressed of spring 7 by rotating Regulation spring seat 5, namely change upper valve core 3 and the adhesive force of upper valve body 1 conical surface, also just can regulate the flow opening flowing medium needed for this runner.
The adjusting nut 6 of this adjustable flow-limiting valve is threaded with lower valve body 2, lower valve core 4 can move in the axial direction under the radial direction of lower valve body 2 is spacing, lower spring 14 is arranged between lower valve body 2 and lower valve core 4, thus the conical surface of lower valve core 4 can be made to be separated with the conical surface of lower valve body 2, and runner is opened.Screw or unscrew the area of passage that adjusting nut 6 can change the stressed of lower spring 14 and lower valve core 4 conical surface place.
During work, flowing medium flows into from the lower end mouth of lower valve body 2, and the through hole through adjusting nut 6 enters the runner of lower valve core 4, then flows out from four through holes 9 of sidewall, with after flow out through the gap between the lower valve core 4 top conical surface and lower valve body 2 shoulder hole, and to enter in upper valve body 1.In this process, when flow rate is excessive, flowing medium can promote lower valve core 4 and move up, thus the male cone (strobilus masculinus) of lower valve core 4 is progressively contacted with the inner conical surface of lower valve body 2, thus reduces flow or block runner; Realize the object of high-voltage and current-limitation thus.
The flowing medium entered in upper valve body 1 promotes upper valve core 3 and moves up, in the process that upper valve core 3 moves up, bottom upper valve core 3, the inner conical surface of the conical surface and upper valve body 1 is progressively opened (exposing gap) each other, thus runner is opened, fluid enters upper valve body 1 inner chamber by opening 8, then flows out upper valve body 1 by the penetration hole 10 of spring seat 5 and flowing hole 11.In this process, when flow rate is too small (when hydrodynamic pressure is not enough to compression upper spring 7), under the effect of upper spring 7, upper valve core 3 is descending, bottom upper valve core 3, the conical surface progressively contacts each other with the inner conical surface of upper valve body 1, thus runner close, fluid not by; Realize the object of current limiting low-voltage thus.
Upper valve core 3 and the lower valve core 4 of this adjustable flow-limiting valve are normally open, not only there is one-way conduction function, simultaneously can also the outflow of control flow check body medium automatically, make to show that stream flow is in fixed range, range of flow controls by Regulation spring seat 5 and adjusting nut 6, screw the lower limit that spring seat 5 can increase minimum outflow, otherwise the minimum outflow of permission is lower; Unscrew the upper limit that adjusting nut 6 can increase maximum outflow, otherwise, permission maximum go out flow lower.Spring seat 5 and adjusting nut 6 should be with the use of at work, to prevent the locked situation of valve.
Claims (7)
1. an adjustable flow-limiting valve, comprises upper valve body (1), lower valve body (2), spring seat (5), upper valve core (3), lower valve core (4) and adjusting nut (6); It is characterized in that: the upper screw thread of upper valve body (1) is provided with lower valve body (2); Shoulder hole is respectively arranged with in upper valve body (1) and lower valve body (2), by spring seat (5) and upper spring (7), upper valve core (3) is installed in the shoulder hole of upper valve body (1), in the shoulder hole of lower valve body (2), by lower spring (14) and adjusting nut (6), lower valve core (4) is installed.
2. the adjustable flow-limiting valve of one according to claim 1, is characterized in that: be provided with seal ring between described upper valve body (1) and lower valve body (2).
3. the adjustable flow-limiting valve of one according to claim 1, is characterized in that: be provided with defining flange (13) in the shoulder hole of upper valve body (1).
4. the adjustable flow-limiting valve of one according to claim 1, is characterized in that: described upper valve core (3) is goblet, upper valve core (3) be circumferentially evenly equipped with multiple opening (8).
5. the adjustable flow-limiting valve of one according to claim 1, is characterized in that: described lower valve core (4) is the goblet of cross section in " convex " shape; Lower valve core (4) be circumferentially evenly equipped with multiple through hole (9).
6. the adjustable flow-limiting valve of one according to claim 1, is characterized in that: described opening (8) and through hole (9) quantity are respectively 4.
7. the adjustable flow-limiting valve of one according to claim 1, is characterized in that: described adjusting nut (6) is threaded with lower valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178121.4A CN105570504B (en) | 2016-03-28 | 2016-03-28 | A kind of adjustable flow-limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178121.4A CN105570504B (en) | 2016-03-28 | 2016-03-28 | A kind of adjustable flow-limiting valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105570504A true CN105570504A (en) | 2016-05-11 |
| CN105570504B CN105570504B (en) | 2018-01-16 |
Family
ID=55880967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610178121.4A Expired - Fee Related CN105570504B (en) | 2016-03-28 | 2016-03-28 | A kind of adjustable flow-limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570504B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3531175A1 (en) * | 1985-08-31 | 1987-03-12 | Gag Grubenausbau Gmbh | Shut-off valve |
| CN2833289Y (en) * | 2005-07-02 | 2006-11-01 | 吴正平 | Explosion-proof safety valve for pipeline |
| CN201265679Y (en) * | 2008-07-22 | 2009-07-01 | 宁波星箭航天机械厂 | Pressure-limiting valve |
| CN202032140U (en) * | 2011-03-02 | 2011-11-09 | 李少辉 | High-low pressure double-blocking type air flow safe valve |
| CN102588633A (en) * | 2012-03-12 | 2012-07-18 | 太仓市弧螺机电有限公司 | High-reliability one-way valve |
| CN104676062A (en) * | 2015-03-12 | 2015-06-03 | 宁波东钱湖旅游度假区圣莱思机电有限公司 | Double-stage gas energy-saving valve |
| CN104696561A (en) * | 2013-12-06 | 2015-06-10 | 利勃海尔机械布尔有限公司 | Pressure-limiting valve |
| CN205504109U (en) * | 2016-03-28 | 2016-08-24 | 长江大学 | Adjustable restriction valve |
-
2016
- 2016-03-28 CN CN201610178121.4A patent/CN105570504B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3531175A1 (en) * | 1985-08-31 | 1987-03-12 | Gag Grubenausbau Gmbh | Shut-off valve |
| CN2833289Y (en) * | 2005-07-02 | 2006-11-01 | 吴正平 | Explosion-proof safety valve for pipeline |
| CN201265679Y (en) * | 2008-07-22 | 2009-07-01 | 宁波星箭航天机械厂 | Pressure-limiting valve |
| CN202032140U (en) * | 2011-03-02 | 2011-11-09 | 李少辉 | High-low pressure double-blocking type air flow safe valve |
| CN102588633A (en) * | 2012-03-12 | 2012-07-18 | 太仓市弧螺机电有限公司 | High-reliability one-way valve |
| CN104696561A (en) * | 2013-12-06 | 2015-06-10 | 利勃海尔机械布尔有限公司 | Pressure-limiting valve |
| CN104676062A (en) * | 2015-03-12 | 2015-06-03 | 宁波东钱湖旅游度假区圣莱思机电有限公司 | Double-stage gas energy-saving valve |
| CN205504109U (en) * | 2016-03-28 | 2016-08-24 | 长江大学 | Adjustable restriction valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105570504B (en) | 2018-01-16 |
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Granted publication date: 20180116 Termination date: 20210328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |