CN103511696A - Overflowing valve with automatic resetting and zero leakage functions - Google Patents
Overflowing valve with automatic resetting and zero leakage functions Download PDFInfo
- Publication number
- CN103511696A CN103511696A CN201310435009.0A CN201310435009A CN103511696A CN 103511696 A CN103511696 A CN 103511696A CN 201310435009 A CN201310435009 A CN 201310435009A CN 103511696 A CN103511696 A CN 103511696A
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- China
- Prior art keywords
- valve
- flap
- valve body
- guide pin
- pin bushing
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- 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
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0272—Construction of housing; Use of materials therefor of lift valves valves provided with a lining
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the pipeline flow protection technology and particularly discloses an overflowing valve with the automatic resetting and zero leakage functions. The overflowing valve comprises a valve body, a valve clack, an adjusting washer, a guide sleeve, a locking ferrule, a spring, an upper spring base, a locking nut, a stop valve and a bypass pipeline. The adjusting washer is arranged between the guide sleeve and the valve body, a step structure is arranged at the top end of the guide sleeve and can fix the bottom of the spring, the valve clack passes through the guide sleeve, and the upper spring base is connected with the rod part of the valve clack. Through a special bypass resetting adjusting structure and a special conical sealing structure, high sealing performance of the overflowing valve is guaranteed after the overflowing valve is closed, and resetting reliability and control over resetting time points can be achieved. Due to the fact that the mode that a flow dual-adjusting structure is closed is adopted, the adjusting range of closing flow is widened and the accuracy of the closing flow is improved.
Description
Technical field
The invention belongs to flow guard technology, be specifically related to a kind of fast shut-off valve.
Background technique
Restrictor Valves is a kind of flow protective equipment, and under normal operation, while passing through the flow in predetermined range in pipeline, valve is opened, and medium can pass through from Restrictor Valves.When occurring that pipeline or accessory break, and filler is while the accident such as coming off, and ducted rate-of flow can increase sharply, and surpasses after specified value, and this valve cuts out automatically, to prevent that in basin, medium runs off in a large number.
Common Restrictor Valves has two kinds of forms, and a kind of structure is not to be with bypass, and this type of valve causes after valve closing occurring that flow is excessive, Restrictor Valves must be pulled down and could allow the flap of Restrictor Valves reset.Another kind of structure is on flap, to be with discharge orifice, at the equipment breaking down, repair complete, and close after valve downstream, MEDIA FLOW is through aperture, through after a period of time, Restrictor Valves upstream and downstream pressure difference reaches balance, and flap can automatically reset, after Restrictor Valves automatically resets, open the valve in downstream, system is recovered normal operation again.But owing to there being aperture on flap, this type of valve still has a large amount of media to flow out and cause waste from flap after closing, and likely causes environmental pollution.If when the distance of Restrictor Valves and valve downstream is distant in addition or the sealing of valve downstream is not fine, can very grow even and cannot reset the resetting time of valve.
Summary of the invention
The object of the present invention is to provide a kind of energy to realize the Restrictor Valves automatically reseting with zero leakage.
Technological scheme of the present invention is as follows:
A kind of energy is realized the Restrictor Valves automatically reseting with zero leakage, it comprises valve body and flap, its center is processed with stepped through hole, in through hole, be provided with flap, described flap is by disk and shaft-like composition, and the stem portion of described flap is set with guide pin bushing, spring, upper spring seat and locking nut from bottom to up successively, and described valve body one side is also provided with by-pass line, it is connected with the through hole in valve body, and by-pass line is provided with stop valve.
At above-mentioned a kind of energy, realize the Restrictor Valves automatically reseting with zero leakage, the top and bottom of described valve body are provided with bypass endoporus, by bypass endoporus, by by-pass line, are communicated with the through hole in valve body.
At above-mentioned a kind of energy, realize the Restrictor Valves automatically reseting with zero leakage, the center of described guide pin bushing is provided with outstanding round platform, and guide pin bushing center is provided with mounting hole, by mounting hole, guide pin bushing is sleeved on outside the stem portion of flap.
At above-mentioned a kind of energy, realize the Restrictor Valves automatically reseting with zero leakage, between described guide pin bushing bottom surface and the ladder step of through hole, be provided with adjustment packing ring.
At above-mentioned a kind of energy, realize the Restrictor Valves automatically reseting with zero leakage, the step place of the stepped through hole lower end of described valve body is processed with taper disc, and the disk lower end surface of the lower end of flap is processed with taper disc, formation sealing configuration.
At above-mentioned a kind of energy, realize the Restrictor Valves automatically reseting with zero leakage, the thread section of described guide pin bushing is provided with guide structure.
Remarkable result of the present invention is:
After the fault of system is got rid of, the valve of closing Restrictor Valves downstream, opens the bypass stop valve of Restrictor Valves, pressure difference on Restrictor Valves flap can slowly reduce, when pressure difference is less than the compressive force of spring, flap reopens, thereby realizes the reset function of Restrictor Valves.
Medium only flows out valve by flap place.When rate-of flow surpasses setting value, on flap, pressure reduction increases, and flap moves and causes valve closing along media flow direction, and the now main road of Restrictor Valves (flap place) and bypass all closed, and medium can not leak.
At regulating valve, close aspect flow and be provided with two regulation structures: spacer coil structures is set between guide pin bushing and valve body, in spring one end, spring seat and locking nut structure is set.Two regulation structures can be adjusted respectively the active force of medium and the active force of spring, thereby greatly increase, close the adjustment range of flow, and the decrement that more easily guarantees spring in the reasonable scope.
Design conical surface sealing structure simultaneously, compare with traditional plane sealing, be conducive to obtain larger seal pressure in sealing place, conical surface place is difficult for stockpiling foreign material simultaneously, has further guaranteed sealing.
In order further to guarantee that conical surface seal has good sealability, the guide section that matching gap is very little is set, to improve the centering of flap action on the basis being connected with valve body screw thread at guide pin bushing.
Accompanying drawing explanation
Fig. 1 is for realizing the Restrictor Valves schematic diagram automatically reseting with zero leakage;
Fig. 2 is for adjusting packing ring scheme of installation;
Fig. 3 is cone seal schematic diagram;
In figure: 1. valve body; 2. flap; 3. adjust packing ring; 4. guide pin bushing; 5. lock lasso; 6. spring; 7. upper spring seat; 8. locking nut; 9 stop valves; 10. by-pass line; 11. bypass endoporus; 12. steps; The lower end surface of 13. disks.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 1, valve body 1 center is processed with through hole, and the lower end of through hole is stepped.Flap 2 is installed in through hole, and described flap 2 bottoms are disk, are shaft-like on disk.Outside shaft-like, be set with guide pin bushing 4.The center of described guide pin bushing 4 is processed with outstanding frustum cone structure, center is processed with mounting hole, by mounting hole, guide pin bushing 4 is sleeved on outside the stem portion of flap 2, locking lasso 5 is installed on described guide pin bushing 4, between locking lasso 5 and valve body 1, for being threaded, by locking lasso 5, guide pin bushing 4 is locked.Described guide pin bushing 4 with valve body 1 for being threaded.
As shown in Figure 2, in order to adjust the stroke of flap 2 in closing process, to change the active force of medium to flap 2, between guide pin bushing 4 bottom surfaces and the ladder step of through hole, packing ring 3 is adjusted in fixed installation.
As shown in Figure 1, the frustum cone structure at described guide pin bushing 4 centers top is spring 6, and this spring 6 is sleeved on the frustum cone structure of guide pin bushing 3, and spring 6 tops are provided with upper spring seat 7, and by locking nut 8, upper spring seat 7 is locked.The stem portion that is flap 2 is set with guide pin bushing 4, spring 6, upper spring seat 7 and locking nut 8 from bottom to up successively.
Main improvements of the present invention are, between the upper-end surface of described valve body 1 and lower end surface, by-pass line 10 is installed, top and bottom processing bypass endoporus 11 by valve body 1, allows by-pass line 10 be communicated with the through hole in valve body 1 by bypass endoporus 11.And stop valve 9 is installed on by-pass line 10 and is controlled switching.
The stop valve 9 of bypass structure is normally closed, and only has in the time of need to resetting and just by external force, is opened.When system breaks down rate-of flow while surpassing setting value, on flap 2, medium differential pressure increase causes medium active force to increase, and flap 2 moves and causes valve closing along media flow direction, and now two of Restrictor Valves bypasses are all closed, and medium can not leak.After the fault of system is got rid of, the valve of closing Restrictor Valves downstream, opens the bypass stop valve 9 of Restrictor Valves, the pressure difference of the flap 2 of Restrictor Valves can slowly reduce, when pressure difference is smaller, the compressive force of spring 6 can be opened flap 2, thereby realizes the reset function of Restrictor Valves.
As shown in Figure 3, in order further to improve sealing effect, the step structure place in described valve body 1 through hole lower end, in the step 12 position with 2 times end in contact of flap, processing taper disc; Simultaneously in the disk lower end surface 13 of the lower end of flap 2, also process taper disc, when flap 2 is during in the interior motion of valve body 1, above-mentioned two taper discs contact, and design cone angle is equal.
Guide pin bushing 4 is threaded connection with valve body 1, at one section of guide structure of the thread section place of guide pin bushing 4 processing, while making flap 2 motion, keeps good centering, adds the setting of taper disc sealing configuration, has guaranteed the sealing of Restrictor Valves.
Claims (6)
1. can realize the Restrictor Valves automatically reseting with zero leakage for one kind, it comprises valve body (1) and flap (2), its center is processed with stepped through hole, in through hole, be provided with flap (2), described flap (2) is by disk and shaft-like composition, the stem portion of described flap (2) is set with guide pin bushing (4) from bottom to up successively, spring (6), upper spring seat (7) and locking nut (8), it is characterized in that: described valve body (1) one side is also provided with by-pass line (10), it is connected with the through hole in valve body (1), and by-pass line (10) is provided with stop valve (9).
2. a kind of energy as claimed in claim 1 is realized the Restrictor Valves automatically reseting with zero leakage, it is characterized in that: the top and bottom of described valve body (1) are provided with bypass endoporus (11), by bypass endoporus (11), by-pass line (10) is communicated with the through hole in valve body (1).
3. a kind of energy as claimed in claim 1 is realized the Restrictor Valves automatically reseting with zero leakage, it is characterized in that: the center of described guide pin bushing (4) is provided with outstanding round platform, guide pin bushing (4) center is provided with mounting hole, by mounting hole, guide pin bushing (4) is sleeved on outside the stem portion of flap (2).
4. a kind of energy as claimed in claim 1 is realized the Restrictor Valves automatically reseting with zero leakage, it is characterized in that: between described guide pin bushing (4) bottom surface and the ladder step of through hole, be provided with and adjust packing ring (3).
5. a kind of energy as claimed in claim 1 is realized the Restrictor Valves automatically reseting with zero leakage, it is characterized in that: the step place of the stepped through hole lower end of described valve body (1) is processed with taper disc, and the disk lower end surface (13) of the lower end of flap (2) is processed with taper disc, form sealing configuration.
6. a kind of energy as claimed in claim 5 is realized the Restrictor Valves automatically reseting with zero leakage, it is characterized in that: the thread section of described guide pin bushing (4) is provided with guide structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435009.0A CN103511696B (en) | 2013-09-23 | 2013-09-23 | A kind of excess flow valve that can realize automatically reseting with zero leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310435009.0A CN103511696B (en) | 2013-09-23 | 2013-09-23 | A kind of excess flow valve that can realize automatically reseting with zero leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103511696A true CN103511696A (en) | 2014-01-15 |
| CN103511696B CN103511696B (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310435009.0A Active CN103511696B (en) | 2013-09-23 | 2013-09-23 | A kind of excess flow valve that can realize automatically reseting with zero leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103511696B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594462A (en) * | 2019-09-26 | 2019-12-20 | 延安大学 | Explosion-proof flow-limiting valve |
| CN113531402A (en) * | 2021-08-11 | 2021-10-22 | 三门核电有限公司 | Full-automatic high-sensitivity pipe network leakage monitoring sensor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2591060A (en) * | 1946-03-09 | 1952-04-01 | Phillips Petroleum Co | Excess flow control valve |
| GB706674A (en) * | 1952-08-05 | 1954-03-31 | Phillips Petroleum Co | Improvements in or relating to excess flow valves |
| DE2343645A1 (en) * | 1973-08-30 | 1975-03-27 | Koch & Mueller Armaturenfab | Self closing valve - has adjustable gap between plunger and conical seat for leak protection |
| US5474105A (en) * | 1994-03-31 | 1995-12-12 | The Aro Corporation | Overrun control device |
| US20080178946A1 (en) * | 2007-01-27 | 2008-07-31 | Plainsman Manufacturing Inc. | Excess Flow Valve |
| CN201412523Y (en) * | 2009-06-22 | 2010-02-24 | 上海宝钢化工有限公司 | Overflow valve |
| CN102777648A (en) * | 2012-06-14 | 2012-11-14 | 珠海爱迪生节能科技有限公司 | Flow limiting shutoff valve |
| CN203571151U (en) * | 2013-09-23 | 2014-04-30 | 北京航天动力研究所 | Overflow valve capable of resetting automatically and free from leakage |
-
2013
- 2013-09-23 CN CN201310435009.0A patent/CN103511696B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2591060A (en) * | 1946-03-09 | 1952-04-01 | Phillips Petroleum Co | Excess flow control valve |
| GB706674A (en) * | 1952-08-05 | 1954-03-31 | Phillips Petroleum Co | Improvements in or relating to excess flow valves |
| DE2343645A1 (en) * | 1973-08-30 | 1975-03-27 | Koch & Mueller Armaturenfab | Self closing valve - has adjustable gap between plunger and conical seat for leak protection |
| US5474105A (en) * | 1994-03-31 | 1995-12-12 | The Aro Corporation | Overrun control device |
| US20080178946A1 (en) * | 2007-01-27 | 2008-07-31 | Plainsman Manufacturing Inc. | Excess Flow Valve |
| CN201412523Y (en) * | 2009-06-22 | 2010-02-24 | 上海宝钢化工有限公司 | Overflow valve |
| CN102777648A (en) * | 2012-06-14 | 2012-11-14 | 珠海爱迪生节能科技有限公司 | Flow limiting shutoff valve |
| CN203571151U (en) * | 2013-09-23 | 2014-04-30 | 北京航天动力研究所 | Overflow valve capable of resetting automatically and free from leakage |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594462A (en) * | 2019-09-26 | 2019-12-20 | 延安大学 | Explosion-proof flow-limiting valve |
| CN113531402A (en) * | 2021-08-11 | 2021-10-22 | 三门核电有限公司 | Full-automatic high-sensitivity pipe network leakage monitoring sensor |
| CN113531402B (en) * | 2021-08-11 | 2023-08-15 | 三门核电有限公司 | Full-automatic high-sensitivity pipe network leakage monitoring sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103511696B (en) | 2016-07-13 |
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