CN105065736B - A kind of load adaptive security valve of use settable orifice - Google Patents
A kind of load adaptive security valve of use settable orifice Download PDFInfo
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- CN105065736B CN105065736B CN201510411420.3A CN201510411420A CN105065736B CN 105065736 B CN105065736 B CN 105065736B CN 201510411420 A CN201510411420 A CN 201510411420A CN 105065736 B CN105065736 B CN 105065736B
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- valve
- main oil
- valve element
- passage
- oil
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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
- F16K17/02—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
Abstract
The present invention relates to a kind of load adaptive security valve of use settable orifice, through flow hole of the hydraulic oil from hydraulic system through being set in main oil inlet passage, passage, valve port, valve element enters valve element cavity of resorption, the oil pressure of lower intracavitary makes valve element be in the inactive state balanced, now primary valve is not turned on, main oil inlet passage and main oil discharge passage are not linked up, and safety valve is closed；When equipment is by shock loading, main oil inlet passage supply oil pressure rises, lower intracavitary oil pressure rises, valve element is moved up, and through flow hole connects area lifting with oil-feed valve port therewith, and pressure loss when fluid flows through inlet valve mouthful reduces, lower cavity pressure accelerates, promote valve element to accelerate motion primary valve acceleration upwards to open, so as to improve the connection speed of main oil inlet passage and main oil discharge passage, shorten the response time that safety valve is opened；The speed that valve element is moved up and shock loading positive correlation.
Description
Technical field
It is a kind of restriction specifically the present invention relates to a kind of load adaptive security valve of use settable orifice
The safety valve that flow area changes with spool position, belongs to hydraulic valve technical field.
Background technology
The widely used hydraulic support of coal mining fully mechanized coal face is automated, when above rock is pushed up and is periodically broken always, by strong
Strong impact.According to mine geology condition, once, hydraulic support bears an intense impact for every 8~40 meters old top fractures.If
Shock loading, which crosses senior general, causes supporting to be failed, and jeopardizes the equipment and personal security of working face when serious.In order to improve hydraulic support
Adaptability and reliability, protection hydraulic support in column (hydraulic cylinder), reduction shock loading lower pillar stand in pressure peak,
Need to carry out timely, effective off-load using safety valve column (hydraulic cylinder).The difficult point for solving this technical problem is, similar
Hydraulic cylinder works pressure in above-mentioned large scale equipment is high, and flow is big, and the Strong Impact Loading duration is short, existing control valve or control
The response time of technology, control power are difficult to meet use demand.
The content of the invention
The technical problem to be solved in the invention is：In the prior art to automating the column in the hydraulic support mined
When carrying out protecting against shock protection, because the hydraulic cylinder works pressure in such large scale equipment is high, flow is big, when Strong Impact Loading continues
Between it is short, and the response time of the safety valve control used is longer, thus safety valve control sensitivity level, control power be difficult to it is full
Sufficient use demand.
The present invention takes following technical scheme:
A kind of load adaptive security valve of use settable orifice, including valve element 1, valve body 2, pressure spring 3, adjust spiral shell
Mother 4；Valve element and valve body surround oil-feed valve port 8, the passage that through flow hole 7 is provided with epicoele 5 and cavity of resorption 6, valve element, is set on valve body
9th, primary valve 12 is formed between main oil inlet passage 10, main oil discharge passage 11, valve element and the main oil discharge passage of hydraulic system UNICOM；Come
Enter valve element cavity of resorption from through flow hole 7 of the hydraulic oil through being set in main oil inlet passage 10, passage 9, valve port 8, valve element of hydraulic system
6, the oil pressure in cavity of resorption 6 makes valve element 1 be in the inactive state of balance, and now primary valve 12 is not turned on, main oil inlet passage 10 and main
Oil discharge passage 11 is not linked up, and safety valve is closed；When equipment is by shock loading, the main supply of oil inlet passage 10 oil pressure rises, cavity of resorption 6
Interior oil pressure rises, and valve element 1 is moved up, and through flow hole 7 connects area lifting with oil-feed valve port 8 therewith, and fluid flows through inlet valve mouthful 8
When the pressure loss reduce, pressure accelerates in cavity of resorption 6, promotes valve element 1 to accelerate move the acceleration of primary valve 12 upwards and open, from
And the connection speed of main oil inlet passage 10 and main oil discharge passage 11 is improved, shorten the response time that safety valve is opened；Valve element 1 is upward
Mobile speed and shock loading positive correlation.
Further, the valve element 1 is in I-shaped, and main oil inlet passage 10 is corresponding with the medium position of valve element 1.
Further, the load adaptive security valve is used alone, or is used as the pilot valve of two-stage pressure relief valve.
Further, the load adaptive security valve is to automate the hydraulic cylinder impact in coal mining fully mechanized coal face hydraulic support
The safety valve of off-load.
A kind of load adaptive security valve of use settable orifice, including valve element 1, valve body 2, pressure spring 3, adjust spiral shell
Mother 4；Valve element and valve body surround oil-feed valve port 8, the passage that through flow hole 7 is provided with epicoele 5 and cavity of resorption 6, valve element, is set on valve body
9th, primary valve 12 is formed between main oil inlet passage 10, main oil discharge passage 11, valve element and the main oil discharge passage of hydraulic system UNICOM；Come
Enter valve element epicoele from through flow hole 7 of the hydraulic oil through being set in main oil inlet passage 10, passage 9, valve port 8, valve element of hydraulic system
5, the elastic force of oil pressure and pressure spring 3 in upper and lower chamber 5,6 makes valve element 1 be in the inactive state of balance, and now primary valve 12 is not
Open, main oil inlet passage 10 and main oil discharge passage 11 are not linked up, safety valve is closed；When equipment is by shock loading, main oil-feed is led to
The supply oil pressure of road 10 rises, and oil pressure rises in cavity of resorption 6, and valve element 1 is moved up, and through flow hole 7 connects area with oil-feed valve port 8 therewith
Reduce, fluid flows through pressure in pressure loss increase during inlet valve mouthful 8, epicoele 5 and accelerates to decline, and the internal pressure of cavity of resorption 6 pushes dynamic valve
Core 1 accelerates upward motion, and primary valve 12 accelerates to open, so as to improve the connection speed of main oil inlet passage 10 and main oil discharge passage 11
Degree, shortens the response time that safety valve is opened；The speed that valve element 1 is moved up and shock loading positive correlation.
Further, the load adaptive security valve is used as the main valve level of two-stage pressure relief valve.
The beneficial effects of the present invention are：
1) safety valve low-response under Strong Impact Loading is solved, the response time of existing control valve or control technology is difficult to completely
Sufficient use demand, the long-standing technical barrier in this this area.
2) it is simple in construction, easy to implement, with low cost, small input, big return.
3) it can be used using the load adaptive security valve of settable orifice as independent part with thump ring
Other equipments under border, it is also possible to used in two-stage pressure relief valve or overflow valve as main valve or pilot valve, with being widely popularized
The market prospects of application.
4) degree that main oil inlet passage supply oil pressure rises voluntarily is produced with the size of shock loading, therefore valve element is to moving up
Size positive correlation of the dynamic velocity and acceleration all with shock loading, realizes that passive load is adaptive.
Brief description of the drawings
Fig. 1 is structural representation of the present invention using the load adaptive security valve of settable orifice.
Fig. 2 is a kind of another structural principle signal of the load adaptive security valve of use settable orifice of the invention
Figure.
In figure, 1. valve elements, 2. valve bodies, 3. pressure springs, 4. adjusting nuts, 5. epicoeles, 6. cavity of resorptions, 7. through flow holes, 8. enter
Fuel tap mouthful, 9. passages, 10. main oil inlet passages, 11. main oil discharge passages, 12. primary valves, 13. pilot stage safety valves.
Embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Embodiment (one)：
Referring to Fig. 1, a kind of load adaptive security valve of use settable orifice, including valve element 1, valve body 2, pressure spring
3, adjusting nut 4, epicoele 5, cavity of resorption 6, through flow hole 7, oil-feed valve port 8, passage 9, main oil inlet passage 10, main oil discharge passage 11 is main
Valve port 12.
Hydraulic oil from hydraulic system enters cavity of resorption 6 through main oil inlet passage 10, passage 9, valve port 8, through flow hole 7.Effect
Hydraulic power, frictional force etc. when power on valve element 1 has upward hydraulic coupling, downward spring force, the valve element 1 to move.Work as effect
On valve element 1 make a concerted effort it is downward when, primary valve 12 is not turned on, and main oil inlet passage 10 and main oil discharge passage 11 are not linked up, safety valve
Close.When act on valve element 1 when making a concerted effort upward, valve element 1 is moved up, and primary valve 12 is opened, main oil inlet passage 10 and main
Oil discharge passage 12 is connected, and safety valve is opened.
The flow area formed between the valve port 8 set on the through flow hole 7 and valve body that the inside of valve element 1 is set, with valve element 1
Move and change.When valve element 1 is moved up, flow area increase, the pressure loss of fluid flow through valve mouthful 8 reduces, in cavity of resorption 6
Pressure rise, acts on hydraulic coupling increase upward on valve element 1, and the acceleration increase that valve element 1 is moved up, primary valve 12 is open
Speed is accelerated, so as to accelerate the response time of safety valve.
When shock loading is smaller, the translational speed of valve element 1 is slower, and the flow area of valve port 8 is smaller, the pressure on valve port 8
Loss is larger, and the pressure of cavity of resorption 6 is smaller, and the opening speed of primary valve 12 is slower.When shock loading is larger, the translational speed of valve element 1
Comparatively fast, in cavity of resorption 6 pressure rise is very fast, and the opening speed of primary valve 12 and acceleration are all very fast, so as to adapt to load change.
Embodiment (two)：
Referring to Fig. 2, a kind of load adaptive security valve of use settable orifice, including valve element 1, valve body 2, pressure spring
3, adjusting nut 4；Valve element and valve body surround the inlet valve that through flow hole 7 is provided with epicoele 5 and cavity of resorption 6, valve element, is set on valve body
Formed and led between main oil inlet passage 10, main oil discharge passage 11, valve element and the main oil discharge passage of mouth 8, passage 9 and hydraulic system UNICOM
Valve port 12；Through flow hole 7 of the hydraulic oil from hydraulic system through being set in main oil inlet passage 10, passage 9, valve port 8, valve element enters
The elastic force of oil pressure and pressure spring 3 in valve element epicoele 5, upper and lower chamber 5,6 makes valve element 1 be in the inactive state of balance, now leads
Valve port 12 is not turned on, and main oil inlet passage 10 and main oil discharge passage 11 are not linked up, and safety valve is closed；When equipment is by shock loading,
The main supply of oil inlet passage 10 oil pressure rises, and oil pressure rises in cavity of resorption 6, and valve element 1 is moved up, therewith through flow hole 7 and oil-feed valve port 8
Connect area to reduce, fluid flows through pressure in pressure loss increase during inlet valve mouthful 8, epicoele 5 and accelerates to decline, the internal pressure of cavity of resorption 6
Push movable valve plug 1 and accelerate upward motion, primary valve 12 accelerates to open, so as to improve main oil inlet passage 10 and main oil discharge passage 11
Speed is connected, shortens the response time that safety valve is opened；The speed that valve element 1 is moved up and shock loading positive correlation.
The load adaptive security valve is used as the main valve level of two-stage pressure relief valve.
Above is embodiment of the present invention for example, the present embodiment is entered under premised on technical solution of the present invention
Row is implemented, and gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to above-mentioned reality
Apply example.
Claims (6)
1. a kind of load adaptive security valve of use settable orifice, it is characterised in that：
Including valve element (1), valve body (2), pressure spring (3), adjusting nut (4)；
Valve element and valve body surround in epicoele (5) and cavity of resorption (6), valve element and are provided with through flow hole (7)；Oil-feed valve port is set on valve body
(8), oil-feed valve port is connected with passage (9), main oil inlet passage (10), main oil discharge passage (11) and hydraulic system UNICOM；Main oil-feed
Passage (10) also with passage (9) UNICOM；Primary valve (12) is formed between valve element and main oil discharge passage；
Hydraulic oil from hydraulic system is through-flow through what is set in main oil inlet passage (10), passage (9), oil-feed valve port (8), valve element
The oil pressure that hole (7) enters in valve element cavity of resorption (6), cavity of resorption (6) makes valve element (1) be in the inactive state balanced, now primary valve
(12) it is not turned on, main oil inlet passage (10) and main oil discharge passage (11) are not linked up, safety valve is closed；
When equipment is by shock loading, main oil inlet passage (10) supply oil pressure rises, and the interior oil pressure of cavity of resorption (6) rises, valve element (1) to
Upper movement, through flow hole (7) and oil-feed valve port (8) connection area lifting therewith, fluid flows through pressure loss during inlet valve mouthful (8)
Reduce, cavity of resorption (6) interior pressure accelerates, promote valve element (1) to accelerate upward motion, primary valve (12) accelerates to open, so as to carry
High main oil inlet passage (10) and the connection speed of main oil discharge passage (11), shorten the response time that safety valve is opened；
The speed that valve element (1) is moved up and shock loading positive correlation.
2. load adaptive security valve as claimed in claim 1, it is characterised in that：The valve element (1) is in I-shaped, main oil-feed
Passage (10) is corresponding with valve element (1) medium position.
3. load adaptive security valve as claimed in claim 1, it is characterised in that：The load adaptive security valve individually makes
With, or use as the pilot valve of two-stage pressure relief valve.
4. load adaptive security valve as claimed in claim 1, it is characterised in that：The load adaptive security valve is automatic
Change the safety valve of the impact off-load in coal mining fully mechanized coal face hydraulic support.
5. a kind of load adaptive security valve of use settable orifice, it is characterised in that：
Including valve element (1), valve body (2), pressure spring (3), adjusting nut (4)；
Valve element and valve body surround in epicoele (5) and cavity of resorption (6), valve element and are provided with through flow hole (7)；Oil-feed valve port is set on valve body
(8), main oil inlet passage (10) and main oil discharge passage (11) respectively with hydraulic system UNICOM, passage (9) two ends are entered with master respectively
Oily passage (10) connects with oil-feed valve port (8)；Primary valve (12) is formed between valve element and main oil discharge passage；
Hydraulic oil from hydraulic system is through-flow through what is set in main oil inlet passage (10), passage (9), oil-feed valve port (8), valve element
The oil pressure and the elastic force of pressure spring (3) that hole (7) enters in valve element epicoele (5), upper and lower chamber (5,6) make valve element (1) be in balance
Inactive state, now primary valve (12) be not turned on, main oil inlet passage (10) and main oil discharge passage (11) are not linked up, safety valve close
Close；
When equipment is by shock loading, main oil inlet passage (10) supply oil pressure rises, and the interior oil pressure of cavity of resorption (6) rises, valve element (1) to
Upper movement, through flow hole (7) and oil-feed valve port (8) connection area reduction therewith, fluid flows through pressure loss during inlet valve mouthful (8)
Increase, the interior pressure acceleration of epicoele (5) declines, and cavity of resorption (6) internal pressure pushes movable valve plug (1) and accelerates upward motion, and primary valve (12) adds
Speed is opened, so as to improve the connection speed of main oil inlet passage (10) and main oil discharge passage (11), shortens the response that safety valve is opened
Time；
The speed that valve element (1) is moved up and shock loading positive correlation.
6. load adaptive security valve as claimed in claim 5, the load adaptive security valve is used as two-stage pressure relief valve
Main valve level is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510411420.3A CN105065736B (en) | 2015-07-14 | 2015-07-14 | A kind of load adaptive security valve of use settable orifice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510411420.3A CN105065736B (en) | 2015-07-14 | 2015-07-14 | A kind of load adaptive security valve of use settable orifice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065736A CN105065736A (en) | 2015-11-18 |
| CN105065736B true CN105065736B (en) | 2017-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510411420.3A Active CN105065736B (en) | 2015-07-14 | 2015-07-14 | A kind of load adaptive security valve of use settable orifice |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051243B (en) * | 2016-07-28 | 2018-08-31 | 上海交通大学 | A kind of quick response safety valve using Nonlinear Adjustment spring |
| CN107255057B (en) * | 2017-07-11 | 2023-07-11 | 重庆万力联兴实业(集团)有限公司 | Automobile pilot type fuel pump pressure regulator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0620370B2 (en) * | 1992-10-29 | 2000-12-06 | Hitachi Construction Machinery Co., Ltd. | Hydraulic control valve apparatus and hydraulic drive system |
| CN100334362C (en) * | 2005-09-20 | 2007-08-29 | 杭州和利时自动化有限公司 | Novel overspeed petective slide valve |
| CN202545911U (en) * | 2012-03-31 | 2012-11-21 | 宁波市甬方机械有限公司 | Unloading valve |
| CN203348653U (en) * | 2013-06-26 | 2013-12-18 | 无锡商业职业技术学院 | Directly-operated type sequence valve |
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