CN108443269A - A kind of unidirectional speed-limiting device - Google Patents
A kind of unidirectional speed-limiting device Download PDFInfo
- Publication number
- CN108443269A CN108443269A CN201810244288.5A CN201810244288A CN108443269A CN 108443269 A CN108443269 A CN 108443269A CN 201810244288 A CN201810244288 A CN 201810244288A CN 108443269 A CN108443269 A CN 108443269A
- Authority
- CN
- China
- Prior art keywords
- connector
- spool
- valve body
- valve
- body cavity
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The present invention relates to a kind of unidirectional speed-limiting devices, including valve body, spool, valve body is equipped with the first connector, second connector, valve port, spool along spool axis direction sliding can closure or openness valve port make the first connector, second connector is communicated or is disconnected, plunger shaft is equipped in valve body, spool outwardly convex is equipped with the piston being adapted to plunger shaft, body cavity is separated into first-class body cavity by piston and valve port, second body cavity, first connector is communicated with first-class body cavity holding, valve port is connected to first-class body cavity and the second connector, equipped with the fluid channel for being more than valve port in valve body equipped with flow resistance in valve body, fluid channel is connected to the second connector and second body cavity, spool outer wall is equipped with the inclined-plane or curved surface for favouring spool glide direction in first fluid intracavitary, elastic component is equipped between piston and valve body.For flow control in hydraulic system, the blank of hydraulic system adaptive throttling switch has been filled up.
Description
Technical field
The present invention relates to a kind of unidirectional speed-limiting devices.
Background technology
Pipeline explosion-proof valve can be generally equipped on existing fluid pressure line, when fluid pressure line breaking blasting, pipeline is explosion-proof
Valve can block fluid pressure line, prevent from rushing down outside the fluid in hydraulic actuating mechanism and fluid pressure line, hydraulic actuating mechanism is made to stop
Work.Existing pipeline explosion-proof valve be based on facilitating valve both ends to have larger pressure difference that could realize closure function, and it is anti-for flow velocity
Should be very insensitive or even reactionless, and cause leakage, flow velocity to increase when small crack or oil connection appearance loosening occurs in oil pipe
When to 3 times of normal working flow rate, pipeline explosion-proof valve is all without any reaction.According to relevant industries standard, hydraulicefficiency elevation structure
No more than 3 times of operating rate, existing pipeline explosion-proof valve obviously cannot be met the requirements maximum speed.
Invention content
The present invention is in view of the above-mentioned problems, provide a kind of unidirectional speed-limiting device.
The technical solution used in the present invention is as follows：A kind of unidirectional speed-limiting device, including valve body, spool, on the valve body
Equipped with the first connector, the second connector, valve port, the spool along the sliding of spool axis direction can closure or openness valve port make the
One connector, the second connector are communicated or are disconnected, and are equipped with plunger shaft in the valve body, the spool outwardly convex be equipped with it is described
The piston of plunger shaft adaptation, the body cavity are separated into first-class body cavity, second body cavity by piston and valve port, and described first
Connector is communicated with first-class body cavity holding, the valve port connection first-class body cavity and the second connector, is equipped in the valve body
It is more than the fluid channel of valve port in the valve body equipped with flow resistance, the fluid channel is connected to the second connector and second body cavity,
The spool outer wall is equipped in first fluid intracavitary and favours the inclined-plane or curved surface of spool glide direction, the piston and valve body it
Between be equipped with elastic component.
The spool close to one end of valve port be taper.
The conical inboard wall that taper is equipped with adaptation is corresponded in the valve body.
Adjusting screw is threaded on the valve body, the adjusting screw stretches into second fluid intracavitary.
The elastic component is spring, and the both ends of the spring is respectively held against piston and valve body.
Beneficial effects of the present invention are as follows：By setting inclined-plane or curved surface, the static pressure force direction of fluid is made to change, in this way,
Effect inclined-plane or curved surface are less than the effect along spool moving direction for acting on in-plane along the active force of spool glide direction
Power；The fluid channel larger by the way that flow resistance is arranged, makes the moment that piston both ends change in valve port flow static pressure difference occur.In this way,
When leaking occurs in hydraulic system pipeline or damaged, valve port flow is more than setting value, which can close oil circuit, and system is stopped
Only run.Operating personnel can pinpoint the problems at the first time, can avoid a large amount of leakages of hydraulic oil.For being flowed in hydraulic system
Speed control, has filled up the blank of hydraulic system adaptive throttling switch.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of spool in Fig. 1.
In figure, 1, valve body；101, the first connector；102, the second connector；103, valve port；104, fluid channel；105,
Conical inboard wall；106, first-class body cavity；107, second body cavity；2, spool；201, piston；203, inclined-plane or curved surface；3, piston
Chamber；4, elastic component；5, adjusting screw.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment, the present invention can be better described.
A kind of unidirectional speed-limiting device, including valve body 1, spool 2, the valve body 1 connect equipped with the first connector 101, second
Interface 102, valve port 103, the spool 2 along 2 axis direction of spool sliding can closure or openness valve port 103 make the first connector
101, the second connector 102 is communicated or is disconnected, and plunger shaft 3 is equipped in the valve body 1, and 2 outwardly convex of the spool is equipped with and institute
The piston 201 of the adaptation of plunger shaft 3 is stated, 1 inner cavity of the valve body is separated into first-class body cavity 106, the by piston 201 and valve port 103
Two fluid cavitys 107, first connector 101 are communicated with the holding of first-class body cavity 106, and the valve port 103 is connected to first fluid
Chamber 106 and the second connector 102, the valve body 1 are interior equipped with the fluid channel for being more than valve port 103 in the valve body 1 equipped with flow resistance
104, the fluid channel 104 is connected to the second connector 102 and second body cavity 107, and 2 outer wall of the spool is in first-class body cavity
It is equipped with the inclined-plane or curved surface 203 for favouring 2 glide direction of spool in 106, elastic component is equipped between the piston 201 and valve body 1
4, elastic component is compressed spring, there is downward thrust to piston.
According to Hydrostatic Transfer Device principle（The pressure that any point is born in static fluid is equal, the static pressure force direction of fluid
Always perpendicular to bearing surface）, the active force along spool glide direction for acting on inclined-plane is F=P*S*a（The size and inclined-plane of a
Gradient it is related）；The active force along spool glide direction for acting on plane is F=P*S.When the pressure at piston both ends is equal, make
Used in the small active force slided along spool and pressure for acting on piston inclined-plane of active force along the sliding of spool direction of piston flat surface
The sum of contracting spring restoring force.So to be parked in fore-set section stationary for piston.Valve port opens the maximum value to setting.When valve port
The moment that flow increases suddenly, according to Bernoulli's theorem, in a fluid system, flow velocity is faster, and the pressure that fluid generates is got over
It is small, therefore the static pressure that piston is born in first-class body cavity one end can reduce moment.However the second connector 102 and second of connection
The 104 convection current body of fluid channel of fluid cavity 107 forms larger liquid resistance.So reduce when the static pressure that piston beveled end is born
Same time, static pressure that piston flat surface end is born and apparently without reduction.So work as the moment of increased flow capacity at valve port, it is living
The static pressure that plug both ends are born is changed, when the static pressure that piston flat surface end is born has been more than that piston beveled end is held
The static pressure received and spring restoring force and when, piston is moved to valve port, close port.Setting in this way, makes limit
Stream device greatly increases the sensitivity of changes in flow rate.So device reflection is sensitive, hydraulic hoisting machine can be realized unidirectional
Speed limit can close hydraulic fluid port when flow is more than the maximum value of setting, ensure the safe and reliable of elevator.
The mode that fluid channel 104 increases flow resistance can be by reduced inner diameter, increase length, the tortuous position of setting etc..
The spool 2 close to one end of valve port 103 be taper.The size that a can be calculated by the gradient of taper surface, can be with
Control sensitivity as needed.
The conical inboard wall 105 that taper is equipped with adaptation is corresponded in the valve body 1.When valve port is closed, the first taper 203 and cone
Shape inner wall 105 is bonded, and is reduced the active force of fluid, is conducive to the pressure maintaining effect of the second connector, so after oil circuit goes wrong
It is easy to maintenance, quick, safe.Moreover, in this way can be to avoid the hydraulic oil occurred due to pipeline is damaged or oil connection loosens
A large amount of leakages, result in waste of resources and environmental pollution.
Adjusting screw 5 is threaded on the valve body 1, the adjusting screw 5 stretches into second body cavity 107.It adjusts
Screw 5 stretches into second body cavity 107, and when resisting spool 2, the maximum distance between spool and valve port adjusts spiral shell by rotation
Nail can change the distance between piston and valve port, can adjust the opening degree of valve port, convenient to adjust working flow rate size
And it is reliable.
The elastic component 4 is spring, and the both ends of the spring is respectively held against piston 201 and valve body 1.The elastic component 4 is circle
Column compressed spring.When the pressure of the first connector 101 is equal to the pressure of the second connector 102, i.e. oil circuit normal condition passes through
Spring makes valve port keep it turning on.
In hydraulic hoisting machine, oil line pipe is directly connected to oil cylinder, when oil line pipe is revealed, in-oil cylinder oil meeting
Reflux oil return line pipeline is flowed out from the cut of oil line pipe meeting crack, if at this time without it is noted that in-oil cylinder have meeting unrestrained
Take, more seriously can form serious pollution in the high-cleanness, highs Work places such as pharmacy, food, seriously affect production and production
Product, in addition, when there is personnel station below hydraulic hoisting machine, the tangible risk at casualties.The present apparatus is mounted on hydraulic pressure
When elevator, the first connector 101 is connected into oil line pipe, the second connector 102 connects oil cylinder, when oil line pipe occurs
When leakage, the static pressure of the first connector 101 reduces rapidly, and in-oil cylinder oil can be returned the first connection by 102 reflux of the second connector
Mouth 101, and flow velocity is accelerated suddenly, present apparatus meeting fast reaction is closed, and hydraulic pressure lift chance is out of service, and staff can examine
Feel exception, is checked.The present apparatus can be used for other needing the higher hydraulic circuit of sensitivity to flow control.
The foregoing is merely a kind of embodiments of the present invention, are not used for limiting the scope of the invention；The present invention's
Protection domain is limited by the claim in claims, and every according to equivalence changes made by invention and modification, is all existed
Within the protection domain of patent of the present invention.
Claims (5)
1. a kind of unidirectional speed-limiting device, including valve body（1）, spool（2）, the valve body（1）It is equipped with the first connector（101）、
Second connector（102）, valve port（103）, the spool（2）Along spool（2）Axis direction sliding can closure or openness valve port
（103）Make the first connector（101）, the second connector（102）It communicates or disconnects, it is characterised in that：The valve body（1）Inside it is equipped with
Plunger shaft（3）, the spool（2）Outwardly convex is equipped with and the plunger shaft（3）The piston of adaptation（201）, the valve body（1）It is interior
Chamber is by piston（201）And valve port（103）It is separated into first-class body cavity（106）, second body cavity（107）, first connector
（101）With first-class body cavity（106）Holding communicates, the valve port（103）It is connected to first-class body cavity（106）With the second connector
（102）, the valve body（1）It is interior to be equipped with the valve body（1）The interior flow resistance that is equipped with is more than valve port（103）Fluid channel（104）, described
Fluid channel（104）It is connected to the second connector（102）With second body cavity（107）, the spool（2）Outer wall in first fluid
Chamber（106）Interior be equipped with favours spool（2）The inclined-plane or curved surface of glide direction（203）, the piston（201）With valve body（1）It
Between be equipped with elastic component（4）.
2. unidirectional speed-limiting device according to claim 1, it is characterised in that：The spool（2）Close to valve port（103）One
End is taper.
3. unidirectional speed-limiting device according to claim 2, it is characterised in that：The valve body（1）Interior corresponding taper is equipped with suitable
The conical inboard wall matched（105）.
4. according to the unidirectional speed-limiting device of claim 1-3 any one of them, it is characterised in that：The valve body（1）Upper screw thread connects
It is connected to adjusting screw（5）, the adjusting screw（5）Stretch into second body cavity（107）It is interior.
5. according to the unidirectional speed-limiting device of claim 1-3 any one of them, it is characterised in that：The elastic component（4）For spring,
The both ends of the spring is respectively held against piston（201）With valve body（1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810244288.5A CN108443269B (en) | 2018-03-23 | 2018-03-23 | Unidirectional speed limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810244288.5A CN108443269B (en) | 2018-03-23 | 2018-03-23 | Unidirectional speed limiting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108443269A true CN108443269A (en) | 2018-08-24 |
| CN108443269B CN108443269B (en) | 2023-07-28 |
Family
ID=63196650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810244288.5A Active CN108443269B (en) | 2018-03-23 | 2018-03-23 | Unidirectional speed limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108443269B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB912777A (en) * | 1961-06-22 | 1962-12-12 | Zdzislaw Radwanski | A control valve |
| US3799192A (en) * | 1972-08-07 | 1974-03-26 | Schlumberger Technology Corp | Velocity sensitive safety valve |
| CN86203693U (en) * | 1986-06-07 | 1987-07-15 | 石油工业部石油勘探开发科学研究院机械研究所 | Energy-saving speed-increasing valve |
| CN1350125A (en) * | 2001-12-07 | 2002-05-22 | 卢永松 | Hydraulic balancing valve |
| CN2833289Y (en) * | 2005-07-02 | 2006-11-01 | 吴正平 | Explosion-proof safety valve for pipeline |
| CN201401385Y (en) * | 2009-04-30 | 2010-02-10 | 浙江安捷制动器有限公司 | Speed-limiting valve |
| CN101943187A (en) * | 2009-07-10 | 2011-01-12 | 上海立新液压有限公司 | One-way balancing valve with brake unlocking port |
| CN201786795U (en) * | 2010-08-31 | 2011-04-06 | 浙江国际海运职业技术学院 | Hydraulic pressure stop valve |
| CN202007802U (en) * | 2011-04-29 | 2011-10-12 | 浙江迦南科技股份有限公司 | Hydraulic system |
| CN102705551A (en) * | 2012-06-08 | 2012-10-03 | 河南平高电气股份有限公司 | Electromagnetic differential safety valve |
| CN103104565A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Balance valve |
| CN103104566A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Plug-in mounting type balance valve |
| CN203476860U (en) * | 2013-09-10 | 2014-03-12 | 上海羽翼船舶设备有限公司 | Precession speed limiting device of stabilization gyro |
| CN103697013A (en) * | 2013-12-13 | 2014-04-02 | 柳州柳工液压件有限公司 | Hydraulic oil cylinder provided with safety valve |
| CN103939650A (en) * | 2014-03-22 | 2014-07-23 | 哈尔滨工程大学 | High-flow constant flow valve with overpressure protection function |
| CN104747523A (en) * | 2015-04-02 | 2015-07-01 | 武汉船用机械有限责任公司 | Releasing speed restriction hydraulic control valve |
| CN105952705A (en) * | 2016-06-29 | 2016-09-21 | 宁波文泽机电技术开发有限公司 | Balance valve |
| CN208294884U (en) * | 2018-03-23 | 2018-12-28 | 浙江迦南科技股份有限公司 | A kind of unidirectional speed-limiting device |
-
2018
- 2018-03-23 CN CN201810244288.5A patent/CN108443269B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB912777A (en) * | 1961-06-22 | 1962-12-12 | Zdzislaw Radwanski | A control valve |
| US3799192A (en) * | 1972-08-07 | 1974-03-26 | Schlumberger Technology Corp | Velocity sensitive safety valve |
| CN86203693U (en) * | 1986-06-07 | 1987-07-15 | 石油工业部石油勘探开发科学研究院机械研究所 | Energy-saving speed-increasing valve |
| CN1350125A (en) * | 2001-12-07 | 2002-05-22 | 卢永松 | Hydraulic balancing valve |
| CN2833289Y (en) * | 2005-07-02 | 2006-11-01 | 吴正平 | Explosion-proof safety valve for pipeline |
| CN201401385Y (en) * | 2009-04-30 | 2010-02-10 | 浙江安捷制动器有限公司 | Speed-limiting valve |
| CN101943187A (en) * | 2009-07-10 | 2011-01-12 | 上海立新液压有限公司 | One-way balancing valve with brake unlocking port |
| CN201786795U (en) * | 2010-08-31 | 2011-04-06 | 浙江国际海运职业技术学院 | Hydraulic pressure stop valve |
| CN202007802U (en) * | 2011-04-29 | 2011-10-12 | 浙江迦南科技股份有限公司 | Hydraulic system |
| CN102705551A (en) * | 2012-06-08 | 2012-10-03 | 河南平高电气股份有限公司 | Electromagnetic differential safety valve |
| CN103104565A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Balance valve |
| CN103104566A (en) * | 2012-12-13 | 2013-05-15 | 陈磊 | Plug-in mounting type balance valve |
| CN203476860U (en) * | 2013-09-10 | 2014-03-12 | 上海羽翼船舶设备有限公司 | Precession speed limiting device of stabilization gyro |
| CN103697013A (en) * | 2013-12-13 | 2014-04-02 | 柳州柳工液压件有限公司 | Hydraulic oil cylinder provided with safety valve |
| CN103939650A (en) * | 2014-03-22 | 2014-07-23 | 哈尔滨工程大学 | High-flow constant flow valve with overpressure protection function |
| CN104747523A (en) * | 2015-04-02 | 2015-07-01 | 武汉船用机械有限责任公司 | Releasing speed restriction hydraulic control valve |
| CN105952705A (en) * | 2016-06-29 | 2016-09-21 | 宁波文泽机电技术开发有限公司 | Balance valve |
| CN208294884U (en) * | 2018-03-23 | 2018-12-28 | 浙江迦南科技股份有限公司 | A kind of unidirectional speed-limiting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108443269B (en) | 2023-07-28 |
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