CN104712801A - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN104712801A CN104712801A CN201510131530.4A CN201510131530A CN104712801A CN 104712801 A CN104712801 A CN 104712801A CN 201510131530 A CN201510131530 A CN 201510131530A CN 104712801 A CN104712801 A CN 104712801A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- valve body
- hole
- safety
- 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.)
- Granted
Links
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
-
- 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
Abstract
The invention discloses a safety valve. The safety valve comprises a valve seat (1), a valve body (2), a connecting plate (3) and a valve casing (4). The valve seat (1) is of a tubular structure, and a first through hole (5) is formed in the middle of the valve seat (1). The valve body (2) is of a solid structure, and a second through hole (6) is formed in the middle of the valve body (2). The valve body (2) is inserted in the valve seat (1). Springs (7) are symmetrically arranged at the two ends of the valve seat (1), and the valve seat (1) is fixed in the valve casing (4) through the connecting plate (3). According to the safety valve, the hydraulic difference generated at the two ends of the safety valve enables the valve body to slide in the valve seat when leakage accidents happen to fluid, the flowing of the fluid can be cut off, and the effect of safety protection is achieved. The safety valve has the advantages of being simple and compact in structure, convenient to assemble, long in service life, easy to maintain and replace and low in production cost.
Description
Technical field
The present invention relates to a kind of safety valve, particularly a kind of emergency closure type safety valve, belongs to safety valve technical field.
Background technique
Safety valve is widely used in the fields such as generating, oil refining, chemical industry apparatus and instrument and apparatus, is especially widely used in liquid conducting pipes.When pipeline burst or equipment break down cause fluid leakage time, safety valve can automatic-closing valve, cut off the flowing of fluid, flow out in a large number to prevent inflammable and explosive or poisonous and hazardous fluid, reduce the infringement to the health of people and the pollution to physical environment, reduce the loss of enterprise simultaneously and reduce the waste of resource.
Existing safety valve structure is more complicated, is not easy to mass production manufacture, and assembling is more inconvenient, and higher to the requirement of installation precision, meanwhile, working life is shorter, often need safeguard, overhauls and change, and cost of production and user cost are all higher.
Summary of the invention
The object of the invention is to; a kind of safety valve is provided; by being slidably matched of valve body and valve seat; the flowing in time, automatically cutting off fluid when leaking can be there is at fluid; this safety valve structure is simply compact, easy to assembly, can be serially connected in production or conveyance conduit; easy-maintaining is changed, and is suitable for large-scale production manufacture.
Technological scheme of the present invention: a kind of safety valve, comprise valve seat, valve body, connecting plate and valve casing, valve seat is tubular structure, the first through hole is provided with in the middle part of it, valve body is solid construction, is provided with the second through hole in the middle part of it, and valve body is plugged on valve seat inside, valve seat two ends are symmetrically arranged with spring, and valve seat is fixed in valve casing by connecting plate.When there is fluid leakage, safety valve two ends hydraulic difference is comparatively large, and valve body is slided in valve seat, and the first through hole and the second through hole stagger, thus cuts off the flowing of fluid; After leakage accident is got rid of, valve body gets back to equilibrium position under the action of the spring, and the first through hole is communicated with the second through hole, fluid proper flow.
In aforesaid this safety valve, valve outer wall and valve base inner wall are fitted, and valve body height is less than valve seat height.Valve outer wall and valve base inner wall are directly fitted, and make to be realized sealing between valve body and valve seat separately by miscellaneous part, simplify the overall structure of safety valve.
In aforesaid this safety valve, valve seat two ends inwall is symmetrically arranged with block.Block defines the sliding scale of valve body, and protection spring is not damaged when safety valve two ends hydraulic difference is excessive.
In aforesaid this safety valve, valve base inner wall is provided with slide rail, body wall is provided with slideway, slide rail and slideway adaptation.The design of slide rail and slideway makes the slip of valve body in valve seat more steady, makes the work of whole safety valve sensitiveer.
In aforesaid this safety valve, valve seat is square tubular structure, and valve body is rectangular structure.Square structure makes the relative position of the first through hole and the second through hole more stable, thus makes the work of whole safety valve more reliable.
In aforesaid this safety valve, the first through hole is identical with the second through-hole aperture.
In aforesaid this safety valve, connecting plate comprises shut and fixed plate, and shut is arranged on fixed plate two ends, and closed at both ends plate is separately positioned on the both sides of fixed plate, and shut is semicircular plate.Shut is arranged on the left and right sides at the upper and lower two ends of fixed plate, and after valve seat and valve casing are coupled together by connecting plate, safety valve two ends can only be communicated with the second through hole by the first through hole, thus play the effect of tripping protection when fluid leakage.
In aforesaid this safety valve, valve casing comprises housing and flange, and flange is arranged on housing two ends.The design of flange facilitates the installation of safety valve.
In aforesaid this safety valve, valve body two ends are provided with groove.The design of groove makes spring more stable relative to the position of valve body, improves the stability that valve body slides in valve seat.
Compared with prior art, when the present invention utilizes fluid generation leakage accident, under the effect of the hydraulic difference produced at safety valve two ends, valve body valve seat of fitting slides therein, the relative misalignment of the first through hole and the second through hole, thus reaches the object cutting off the fluid circulation of safety valve two ends, after accident is got rid of, under the action of the spring, valve body gets back to equilibrium position, fluid recovers flowing, whole apparatus structure is simple, and working stability is easy to assembly, and cost is lower, be applicable to promoting the use of.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the structural representation of valve body;
Fig. 3 is the partial sectional view of valve body, valve seat and spring assembling;
Fig. 4 is the structural representation of connecting plate.
Being labeled as in accompanying drawing: 1-valve seat, 2-valve body, 3-connecting plate, 4-valve casing, 5-first through hole, 6-second through hole, 7-spring, 8-shut, 9-fixed plate, 10-housing, 11-flange, 12-block, 13-slide rail, 14-slideway, 15-groove.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiments of the invention 1: a kind of safety valve, comprise valve seat 1, valve body 2, connecting plate 3 and valve casing 4, valve seat 1 is tubular structure, the first through hole 5 is provided with in the middle part of it, namely the first through hole 5 is arranged on the geometrical center of valve seat 1, valve body 2 is solid construction, the second through hole 6 is provided with in the middle part of it, namely the second through hole 6 is arranged on the geometrical center of valve body 2, it is inner that valve body 2 is plugged on valve seat 1, valve seat 1 two ends are symmetrically arranged with spring 7, spring 7 can be fixed on valve seat 1 with pin, valve body 2 is positioned at the central position of valve seat 1 under the effect of spring 7, first through hole 5 overlaps with the center line of the second through hole 6, now namely valve body 2 is in equilibrium position, valve seat 1 is fixed in valve casing 4 by connecting plate 3, namely the outward edge of connecting plate 3 and valve casing 4 weld together, inward flange and the valve seat 1 of connecting plate 3 weld together.
Especially, valve body 2 outer wall and valve seat 1 inwall are fitted, airtight between valve body 2 and valve seat 1, and valve body 2 is highly less than valve seat 1 height, and valve body 2 has the space slided up and down in valve seat 1.
Particularly, valve seat 1 two ends inwall is symmetrically arranged with block 12, the distance between block 12 equals or the length of being a bit larger tham valve body 2 adds the diameter sum of the first through hole 5 and the second through hole 6.
Advantageously, valve seat 1 inwall is provided with slide rail 13, valve body 2 sidewall is provided with slideway 14, slide rail 13 is adaptive with slideway 14.Slide rail 13 is avoided the first through hole 5 and is arranged on the inwall of valve seat 1 both sides, and slideway 14 is avoided the second through hole 6 and is arranged on valve body 2 two side.
Further, valve seat 1 is square tubular structure, and valve body 2 is rectangular structure, and the first through hole 5 and the second through hole 6 centerline parallel are arranged, and square structure ensure that the stability of holes opposite direction.
Further, the first through hole 5 is identical with the second through hole 6 aperture.
Wherein, connecting plate 3 comprises shut 8 and fixed plate 9, and shut 8 is arranged on fixed plate 9 two ends, and closed at both ends plate 8 is separately positioned on the both sides of fixed plate 9, and namely two shuts 8 are separately positioned on the left and right sides at fixed plate about 9 two ends, and shut 8 is semicircular plate.
Further, valve casing 4 comprises housing 10 and flange 11, and flange 11 is arranged on housing about 10 two ends.
In addition, valve body 2 two ends are provided with groove 15.Groove 15 is arranged on valve body 2 liang of bottom center positions, and groove 15 diameter equals or is a bit larger tham spring 7 cross section external diameter.
Embodiments of the invention 2: a kind of safety valve, comprise valve seat 1, valve body 2, connecting plate 3 and valve casing 4, valve seat 1 is tubular structure, the first through hole 5 is provided with in the middle part of it, namely the first through hole 5 is arranged on the geometrical center of valve seat 1, valve body 2 is solid construction, the second through hole 6 is provided with in the middle part of it, namely the second through hole 6 is arranged on the geometrical center of valve body 2, it is inner that valve body 2 is plugged on valve seat 1, valve seat 1 two ends are symmetrically arranged with spring 7, spring 7 can be fixed on valve seat 1 with pin, valve body 2 is positioned at the central position of valve seat 1 under the effect of spring 7, first through hole 5 overlaps with the center line of the second through hole 6, now namely valve body 2 is in equilibrium position, valve seat 1 is fixed in valve casing 4 by connecting plate 3, namely the outward edge of connecting plate 3 and valve casing 4 weld together, inward flange and the valve seat 1 of connecting plate 3 weld together.
Especially, valve body 2 outer wall and valve seat 1 inwall are fitted, airtight between valve body 2 and valve seat 1, and valve body 2 is highly less than valve seat 1 height, and valve body 2 has the space slided up and down in valve seat 1.
Particularly, valve seat 1 two ends inwall is symmetrically arranged with block 12, the distance between block 12 equals or the length of being a bit larger tham valve body 2 adds the diameter sum of the first through hole 5 and the second through hole 6.
Further, valve seat 1 is square tubular structure, and valve body 2 is rectangular structure, and the first through hole 5 and the second through hole 6 centerline parallel are arranged, and square structure ensure that the stability of holes opposite direction.
Wherein, connecting plate 3 comprises shut 8 and fixed plate 9, and shut 8 is arranged on fixed plate 9 two ends, and closed at both ends plate 8 is separately positioned on the both sides of fixed plate 9, and namely two shuts 8 are separately positioned on the left and right sides at fixed plate about 9 two ends, and shut 8 is semicircular plate.
Embodiments of the invention 3: a kind of safety valve, comprise valve seat 1, valve body 2, connecting plate 3 and valve casing 4, valve seat 1 is tubular structure, the first through hole 5 is provided with in the middle part of it, namely the first through hole 5 is arranged on the geometrical center of valve seat 1, valve body 2 is solid construction, the second through hole 6 is provided with in the middle part of it, namely the second through hole 6 is arranged on the geometrical center of valve body 2, it is inner that valve body 2 is plugged on valve seat 1, valve seat 1 two ends are symmetrically arranged with spring 7, spring 7 can be fixed on valve seat 1 with pin, valve body 2 is positioned at the central position of valve seat 1 under the effect of spring 7, first through hole 5 overlaps with the center line of the second through hole 6, now namely valve body 2 is in equilibrium position, valve seat 1 is fixed in valve casing 4 by connecting plate 3, namely the outward edge of connecting plate 3 and valve casing 4 weld together, inward flange and the valve seat 1 of connecting plate 3 weld together.
Especially, valve body 2 outer wall and valve seat 1 inwall are fitted, airtight between valve body 2 and valve seat 1, and valve body 2 is highly less than valve seat 1 height, and valve body 2 has the space slided up and down in valve seat 1.
Using method of the present invention: safety valve is connected on fluid line, during normal work, be normal flow rate by the fluid flow of safety valve, safety valve two ends hydraulic difference is less, valve body 2 is under the effect of spring 7, generally within equilibrium position, fluid circulates through the first through hole 5 and the second through hole 6; When there is fluid leakage accident, safety valve two ends hydraulic difference is excessive, and valve body 2 departs from equilibrium position comparatively far under pressure, and namely the first through hole 5 and the second through hole 6 stagger, and valve body 2 withstands on block 12, thus cuts off fluid circulation, reaches the object of safety protection; After leakage accident is got rid of, safety valve two ends hydraulic difference recovers normal, and valve body 2 substantially gets back to equilibrium position under the promotion of spring 7, and the first through hole 5 is communicated with the second through hole 6, and fluid normally circulates.
Claims (9)
1. a safety valve, comprise valve seat (1), valve body (2), connecting plate (3) and valve casing (4), it is characterized in that: valve seat (1) is tubular structure, the first through hole (5) is provided with in the middle part of it, valve body (2) is solid construction, the second through hole (6) is provided with in the middle part of it, it is inner that valve body (2) is plugged on valve seat (1), valve seat (1) two ends are symmetrically arranged with spring (7), and valve seat (1) is fixed in valve casing (4) by connecting plate (3).
2. a kind of safety valve according to claim 1, is characterized in that: valve body (2) outer wall and valve seat (1) inwall are fitted, and valve body (2) is highly less than valve seat (1) highly.
3. a kind of safety valve according to claim 1, is characterized in that: valve seat (1) two ends inwall is symmetrically arranged with block (12).
4. a kind of safety valve according to claim 1, it is characterized in that: valve seat (1) inwall is provided with slide rail (13), valve body (2) sidewall is provided with slideway (14), slide rail (13) is adaptive with slideway (14).
5. a kind of safety valve according to claim 1, is characterized in that: valve seat (1) is square tubular structure, and valve body (2) is rectangular structure.
6. a kind of safety valve according to claim 1, is characterized in that: the first through hole (5) is identical with the second through hole (6) aperture.
7. a kind of safety valve according to claim 1, it is characterized in that: connecting plate (3) comprises shut (8) and fixed plate (9), shut (8) is arranged on fixed plate (9) two ends, closed at both ends plate (8) is separately positioned on the both sides of fixed plate (9), and shut (8) is semicircular plate.
8. a kind of safety valve according to claim 1, is characterized in that: valve casing (4) comprises housing (10) and flange (11), and flange (11) is arranged on housing (10) two ends.
9. a kind of safety valve according to claim 1, is characterized in that: valve body (2) two ends are provided with groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131530.4A CN104712801B (en) | 2015-03-24 | 2015-03-24 | A kind of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131530.4A CN104712801B (en) | 2015-03-24 | 2015-03-24 | A kind of safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104712801A true CN104712801A (en) | 2015-06-17 |
| CN104712801B CN104712801B (en) | 2017-06-20 |
Family
ID=53412390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510131530.4A Expired - Fee Related CN104712801B (en) | 2015-03-24 | 2015-03-24 | A kind of safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712801B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU554444A1 (en) * | 1975-09-18 | 1977-04-15 | Предприятие П/Я В-8670 | Safety valve for hydraulic systems |
| CN87105075A (en) * | 1987-09-02 | 1988-10-12 | 沈阳工业大学 | Differential pressure safety valve for high-pressure large flow |
| US6019115A (en) * | 1997-12-19 | 2000-02-01 | Sanders Valve Corporation | Safety excess flow valve system with adjustable closing flow rate settings |
| CN2833289Y (en) * | 2005-07-02 | 2006-11-01 | 吴正平 | Explosion-proof safety valve for pipeline |
| CN201028083Y (en) * | 2006-11-06 | 2008-02-27 | 闫守儒 | Safety water-saving valve |
| CN101225898A (en) * | 2007-01-18 | 2008-07-23 | 闫守儒 | Leakage-proof valve |
| CN201259002Y (en) * | 2008-08-15 | 2009-06-17 | 吕宇峰 | Improved safety non-leakage permanent magnet drive valve |
| CN204493824U (en) * | 2015-03-24 | 2015-07-22 | 东北大学 | A kind of safety valve |
-
2015
- 2015-03-24 CN CN201510131530.4A patent/CN104712801B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU554444A1 (en) * | 1975-09-18 | 1977-04-15 | Предприятие П/Я В-8670 | Safety valve for hydraulic systems |
| CN87105075A (en) * | 1987-09-02 | 1988-10-12 | 沈阳工业大学 | Differential pressure safety valve for high-pressure large flow |
| US6019115A (en) * | 1997-12-19 | 2000-02-01 | Sanders Valve Corporation | Safety excess flow valve system with adjustable closing flow rate settings |
| CN2833289Y (en) * | 2005-07-02 | 2006-11-01 | 吴正平 | Explosion-proof safety valve for pipeline |
| CN201028083Y (en) * | 2006-11-06 | 2008-02-27 | 闫守儒 | Safety water-saving valve |
| CN101225898A (en) * | 2007-01-18 | 2008-07-23 | 闫守儒 | Leakage-proof valve |
| CN201259002Y (en) * | 2008-08-15 | 2009-06-17 | 吕宇峰 | Improved safety non-leakage permanent magnet drive valve |
| CN204493824U (en) * | 2015-03-24 | 2015-07-22 | 东北大学 | A kind of safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104712801B (en) | 2017-06-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 |