CN104896157B - Direct-power safety valve - Google Patents
Direct-power safety valve Download PDFInfo
- Publication number
- CN104896157B CN104896157B CN201510276452.7A CN201510276452A CN104896157B CN 104896157 B CN104896157 B CN 104896157B CN 201510276452 A CN201510276452 A CN 201510276452A CN 104896157 B CN104896157 B CN 104896157B
- Authority
- CN
- China
- Prior art keywords
- direct
- valve
- power safety
- pressure regulation
- valve element
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- 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
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
-
- 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
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
Abstract
The invention discloses a kind of direct-power safety valve, including valve seat (1), valve element (2) and pressure regulation fixture (7), the pressure regulation fixture (7) is connected to the afterbody of the valve element (2) and the pressure regulation fixture (7) can drive the head of the valve element (2) to extend in the inner chamber of the valve seat (1), conical seal (contact) face is provided with the outer surface on the head of the valve element (2) with so that band can be formed between the head of the valve seat (1) and the valve element (2), the direct-power safety valve also includes Flexible Connector (6), the Flexible Connector (6) is arranged between the pressure regulation fixture (7) and valve element (2).The direct-power safety valve better tightness, logical oil mass are bigger, and operate when being turned on and off smooth, and noise is small.
Description
Technical field
The present invention relates to hydraulic test, in particular it relates to which a kind of logical oil mass is big, the direct-power safety valve of better tightness.
Background technology
Safety valve is that opening and closing element is in normally off under by external force effect, when the pressure medium rise in equipment or pipeline is super
When crossing setting, by outside system discharge medium prevent the pressure medium in pipeline or equipment from exceeding the particular usage valve of specified value
Door.Safety valve belongs to automatic valve class, is mainly used in boiler, on pressure vessels and pipes, and control pressure is no more than setting, so as to
Accident does not occur because of hypertonia for guarantee, and important protective effect has been run to personal safety and equipment.
Existing safety valve machining accuracy is difficult to ensure that flat seal is too high to its housing processing request, poor sealing performance,
Logical oil mass is too small, it is difficult to adapts to the requirement of huge discharge steering gear progressively increased.Meanwhile valve element is opened and had some setbacks, and is often gone out
The problems such as existing pressure shake, noise.
The content of the invention
It is an object of the invention to provide a kind of direct-power safety valve, the direct-power safety valve better tightness, logical oil mass are more
Greatly, and when being turned on and off operate smooth, noise is small.
To achieve these goals, the invention provides a kind of direct-power safety valve, including valve seat, valve element and pressure regulation to fix
Part, pressure regulation fixture is connected to the afterbody of valve element and pressure regulation fixture can drive the head of valve element to extend to the inner chamber of valve seat
In, conical seal (contact) face is provided with the outer surface on the head of valve element with so that sealing can be formed between valve seat and the head of valve element
Band, direct-power safety valve also include Flexible Connector, and Flexible Connector is arranged between pressure regulation fixture and valve element.
Preferably, Flexible Connector is spring.
Preferably, direct-power safety valve also includes spring base, and one end of spring base is connected with the afterbody of valve element, the other end
It is connected with one end of spring.
Preferably, spring base includes pedestal and positioning convex, and one end of pedestal is connected with the afterbody of valve element, on the other end
It is provided with one end of positioning convex and spring and can be sheathed on positioning convex and is connected with the other end with pedestal.
Preferably, pedestal is identical with the bore of the end of pressure regulation fixture for the bore of cylinder and pedestal.
Preferably, pressure regulation fixture is pressure regulating screw.
Preferably, guide protrusions are outward extended with the connection end of pressure regulation fixture and spring, and guide protrusions can
Extend in spring.
Preferably, ring shaped slot is formed on the periphery wall of the afterbody of valve seat, and is provided with ring shaped slot and is engaged with ring shaped slot
Ring seal circle.
Preferably, the one or both sides of O-ring seal are provided with annular retaining ring.
According to above-mentioned technical proposal, pressure regulation fixture is connected to the afterbody of valve element by the present invention, by driving pressure regulation to fix
Part can extend in the inner chamber of valve seat with the head of movable valve plug.The head of valve seat and valve element is sealed against each other using labyrinth seal,
Improve the sealing connected therebetween so that interior media is not easy to reveal, and avoids causing potential safety hazard.Fixed in pressure regulation
Flexible Connector is set, for aiding in resilience of the pressure regulation fixture when opening so that whole Direct Action Type peace between part and valve element
Full valve is opened more smooth.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation of the direct-power safety valve in the preferred embodiment of the present invention.
Description of reference numerals
1- valve seat 2- valve elements
3- ring seal circle 4- annular retaining rings
51- pedestal 52- positioning convex
6- Flexible Connector 7- pressure regulation fixtures
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In the present invention, in the case where not making opposite explanation, " upper and lower, inside and outside " etc. is included in the noun of locality in term
Only represent orientation of the term under normal service condition, or be skilled artisan understands that be commonly called as, and be not construed as pair
The limitation of the term.
Referring to Fig. 1, the present invention provides a kind of direct-power safety valve, including valve seat 1, valve element 2 and pressure regulation fixture 7, pressure regulation
Fixture 7 is connected to the afterbody of valve element 2 and pressure regulation fixture 7 can drive the head of valve element 2 to extend in the inner chamber of valve seat 1,
Multiple comb teeth are provided with the outer surface on the head of valve element 2 with so that can to form labyrinth between the head of valve seat 1 and valve element 2 close
Envelope, direct-power safety valve also include Flexible Connector 6, and Flexible Connector 6 is arranged between pressure regulation fixture 7 and valve element 2.
Pass through above-mentioned technical proposal, pressure regulation fixture 7 is connected to the afterbody of valve element 2, by driving the energy of pressure regulation fixture 7
Enough 2 heads with movable valve plug are extended in the inner chamber of valve seat 1.The head of valve seat 1 and valve element 2 is sealed against each other by labyrinth seal,
Improve the sealing connected therebetween so that interior media is not easy to reveal, and avoids causing potential safety hazard.Fixed in pressure regulation
Flexible Connector 6 is set between part 7 and valve element 2, for aiding in resilience of the pressure regulation fixture 7 when opening so that whole direct acting
Formula safety valve is opened more smooth.
In the present embodiment, Flexible Connector 6 can be that any one common in this area has auxiliary resilience work(
Can structure, but from reducing from the point of view of production cost and being easy to repairs, changes, it is preferable that Flexible Connector 6 is spring.
When adjusting the position of pressure regulation fixture 7, the contact area of spring and valve element 2 is small, and tractive force is insufficient and easily disconnected
Split, virtually add the maintenance cost of direct-power safety valve, to avoid the generation of such case, preferably direct-power safety valve also
Including spring base, one end of spring base is connected with the afterbody of valve element 2, and the other end is connected with one end of spring.
Using the contact area that spring and valve element 2 are added after spring base, meanwhile, in order to facilitate the group of spring and spring base
Dress, production work efficiency being improved, save human cost, preferably spring base includes pedestal 51 and positioning convex 52, and the one of pedestal 51
End is connected with the afterbody of valve element 2, and one end of positioning convex 52 and spring is provided with the other end can be sheathed on positioning convex
It is connected on 52 with the other end with pedestal 51.So in assembling, one end of spring need to be only set in the positioning of spring base
In projection 52 and affixed close, the stability during increase regulation that ensures that spring and spring base coordinate.
When opening pressure regulation fixture 7, spring base and spring resilience simultaneously, to prevent that spring is turned round in springback process
Song, its normal adjustment effect is influenceed, preferably pedestal 51 is bore and the end of pressure regulation fixture 7 of cylinder and pedestal 51
Bore is identical.Using this technical scheme, the outer wall of pedestal 51 can be tightly bonded with the outer casing inner wall of safety valve, be not susceptible to
Deflection, the resilience to spring, which is formed, serves good guide effect.
Above-mentioned Flexible Connector 6 can be the structure that any one common in this area has auxiliary resilience function, but
From reducing from the point of view of production cost and being easy to repairs, changes, preferably pressure regulation fixture 7 is pressure regulating screw.
In addition, in order that pressure regulation fixture 7 and spring attachment structure it is more stable, it is difficult for drop-off so that influence entirely
The normal regulating of direct-power safety valve, it is preferable that guide protrusions are outward extended with the connection end of pressure regulation fixture 7 and spring,
And guide protrusions can extend in spring.
In order to further lift the sealing property of whole direct-power safety valve, the medium for effectively preventing it internal leaks, excellent
Selection of land, ring shaped slot is formed on the periphery wall of the afterbody of valve seat 1, and the ring seal being engaged with ring shaped slot is provided with ring shaped slot
Circle 3.
The material of direct-power safety valve is mostly rigid (such as steel, iron), and O-ring seal 3 is flexible material (such as rubber
Glue), when O-ring seal 3 is placed in the cell body of ring shaped slot rubber ring easily occurs is promoted by hydraulic oil, by the peace of safety valve
The extrusion breakage of dress gap causes oil leak, has a strong impact on the sealing property of direct-power safety valve, excellent in order to solve this technical problem
Selection of land, the one or both sides of O-ring seal 3 are provided with annular retaining ring 4.So, annular retaining ring 4 can replace flexible material direct
Contacted with rigid material so that O-ring seal 3 can persistently ensure its sealing function.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (7)
1. a kind of direct-power safety valve, including valve seat (1), valve element (2) and pressure regulation fixture (7), the pressure regulation fixture (7) is even
It is connected to the afterbody of the valve element (2) and the pressure regulation fixture (7) can drives the head of the valve element (2) to extend to the valve
In the inner chamber of seat (1), it is characterised in that it is described to cause that multiple comb teeth are provided with the outer surface on the head of the valve element (2)
Labyrinth seal can be formed between the head of valve seat (1) and the valve element (2), the direct-power safety valve also includes elastic connection
Part (6), the Flexible Connector (6) are arranged between the pressure regulation fixture (7) and valve element (2)；
Ring shaped slot is formed on the periphery wall of the afterbody of the valve seat (1), and is provided with the ring shaped slot and the ring shaped slot phase
The O-ring seal (3) of cooperation；
The side of the O-ring seal (3) is provided with annular retaining ring (4), O-ring seal (3) side high pressure, annular retaining ring
(4) side low pressure, annular retaining ring prevent O-ring seal (3) from being extruded by high pressure.
2. direct-power safety valve according to claim 1, it is characterised in that the Flexible Connector (6) is spring.
3. direct-power safety valve according to claim 2, it is characterised in that the direct-power safety valve also includes spring
Seat, one end of the spring base are connected with the afterbody of the valve element (2), and the other end is connected with one end of the spring.
4. direct-power safety valve according to claim 3, it is characterised in that the spring base includes pedestal (51) and positioning
Raised (52), one end of the pedestal (51) are connected with the afterbody of the valve element (2), and the convex is provided with the other end
Playing one end of (52) and the spring can be sheathed on the positioning convex (52) with the other end phase with the pedestal (51)
Connection.
5. direct-power safety valve according to claim 4, it is characterised in that the pedestal (51) is cylinder and described
The bore of pedestal (51) is identical with the bore of the end of the pressure regulation fixture (7).
6. according to the direct-power safety valve described in any one in claim 1-5, it is characterised in that the pressure regulation fixture
(7) it is pressure regulating screw.
7. according to the direct-power safety valve described in any one in claim 2-5, it is characterised in that the pressure regulation fixture
(7) with being outward extended with guide protrusions on the connection end of the spring, and the guide protrusions can extend to the spring
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510276452.7A CN104896157B (en) | 2015-05-26 | 2015-05-26 | Direct-power safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510276452.7A CN104896157B (en) | 2015-05-26 | 2015-05-26 | Direct-power safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104896157A CN104896157A (en) | 2015-09-09 |
| CN104896157B true CN104896157B (en) | 2017-12-01 |
Family
ID=54029009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510276452.7A Expired - Fee Related CN104896157B (en) | 2015-05-26 | 2015-05-26 | Direct-power safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104896157B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015178B (en) * | 2016-08-05 | 2018-01-30 | 芜湖中意液压科技股份有限责任公司 | All-hydraulic steering gear with compact safety valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202252194U (en) * | 2011-09-13 | 2012-05-30 | 龙工（上海）桥箱有限公司 | Overflow valve for excavator main control valve |
| CN103353000A (en) * | 2013-06-28 | 2013-10-16 | 宁波长壁流体动力科技有限公司 | Safety valve on hydraulic pipe |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000055222A (en) * | 1998-08-07 | 2000-02-22 | Kyosan Denki Kk | Pressure adjusting device for compressed gas |
| CN202360828U (en) * | 2011-12-09 | 2012-08-01 | 巨隆集团芜湖兴隆液压有限公司 | Medium-flow safety valve for compound sealing |
| CN204253512U (en) * | 2014-11-20 | 2015-04-08 | 宁波克泰液压有限公司 | Differential type overload valve |
| CN204664532U (en) * | 2015-05-26 | 2015-09-23 | 芜湖中意液压科技股份有限责任公司 | Direct-power safety valve |
-
2015
- 2015-05-26 CN CN201510276452.7A patent/CN104896157B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202252194U (en) * | 2011-09-13 | 2012-05-30 | 龙工（上海）桥箱有限公司 | Overflow valve for excavator main control valve |
| CN103353000A (en) * | 2013-06-28 | 2013-10-16 | 宁波长壁流体动力科技有限公司 | Safety valve on hydraulic pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104896157A (en) | 2015-09-09 |
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| 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: 20171201 Termination date: 20180526 |