CN103850998B - A kind of pressure stopper by electromagnetic valve opening and closing - Google Patents
A kind of pressure stopper by electromagnetic valve opening and closing Download PDFInfo
- Publication number
- CN103850998B CN103850998B CN201210493553.6A CN201210493553A CN103850998B CN 103850998 B CN103850998 B CN 103850998B CN 201210493553 A CN201210493553 A CN 201210493553A CN 103850998 B CN103850998 B CN 103850998B
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- housing
- oil
- piston
- hydraulic fluid
- electromagnetic valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a kind of pressure stopper by electromagnetic valve opening and closing, comprise housing, piston, cover plate, solenoid valve; Described cover plate is arranged on housing upper opening for closed shell, solenoid valve to be arranged on housing or on cover plate for the switching of hydraulic control oil; Housing is divided into pressure oil cavity, goes out oil pocket, oil back chamber, control oil pocket by described Piston assembling in housing, the housing controlling oil pocket and oil back chamber is equipped with control port and buffering hydraulic fluid port, the control port controlled on oil pocket housing is positioned at above buffering hydraulic fluid port, control port on oil back chamber housing is positioned at below buffering hydraulic fluid port, be equipped with throttle orifice in described control port and buffering hydraulic fluid port, the throttle orifice latus rectum in control port is greater than the throttle orifice latus rectum in buffering hydraulic fluid port.The present invention has without impacts, noise free, low pressure loss, overall dimensions compact, and band is outside indicates and the feature such as warning function, is adapted at applying in speed control system.
Description
Technical field
The present invention relates to Water-turbine Generator Velocity Modulation System technical field, relate in particular to a kind of pressure stopper.
Background technique
Water-turbine Generator Velocity Modulation System is primarily of speed regulator, oil gear composition; oil gear forms primarily of oil sump tank and pressure oil tank two-part; pressure oil tank provides stable pressure oil-source to speed control system, in, pressure stopper usually can be adopted in Large-scale machine set to realize the switching function of pressure oil tank and speed control system hydraulic part.Pressure stopper often adopts cartridge valve to realize the through-flow of large discharge, and cartridge valve is made up of lining and piston two-part, and its switch is realized by the upper and lower cavity pressure difference of piston.Because cartridge valve is made up of two-part, when latus rectum is larger, physical dimension is larger, so the area of control chamber is comparatively large, under the effect of pressure oil, the power acted on during closedown on piston is also larger, piston movement speed is fast, therefore large to the impact force of lining and cover plate, noise is large; Pressure difference when upper piston area adopts spring to increase closedown, when causing unlatching, pressure oil must overcome the effect of spring force, larger by the pressure loss of pressure stopper; And existing pressure stopper does not possess outside instruction, warning function.
Summary of the invention
For above-mentioned prior art, the technical problem to be solved in the present invention is: existing pressure stopper exists that impact force is large, noise is large, the pressure loss seriously and not possesses outside instruction, warning function.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
By a pressure stopper for electromagnetic valve opening and closing, it is characterized in that, comprise housing, piston, cover plate, solenoid valve; Described cover plate is arranged on housing upper opening for closed shell, solenoid valve to be arranged on housing or on cover plate for the switching of hydraulic control oil; Housing is divided into pressure oil cavity, goes out oil pocket, oil back chamber, control oil pocket by described Piston assembling in housing, the housing controlling oil pocket and oil back chamber is equipped with control port and buffering hydraulic fluid port, the control port controlled on oil pocket housing is positioned at above buffering hydraulic fluid port, control port on oil back chamber housing is positioned at below buffering hydraulic fluid port, be equipped with throttle orifice in described control port and buffering hydraulic fluid port, the throttle orifice latus rectum in control port is greater than the throttle orifice latus rectum in buffering hydraulic fluid port.
As a further improvement on the present invention, described piston is provided with a push rod, the top of this push rod is through cover plate.
The underpart of described push rod is spherical structure, and is fixed on piston by flange.
Described cover plate is also equipped with visual indicative mark, directly observes the on off state of pressure stopper at the scene by this visual indicative mark.
As a further improvement on the present invention, described cover plate is provided with the proximity switch of monitoring piston position, sends feedback signal like this after piston action, effectively can guarantee that the action of pressure stopper is accurate.
As a further improvement on the present invention, described piston is differential piston, all has balancing slit in the side, upper and lower of this differential piston, during to ensure piston movement and the concentricity of housing, reduces friction and wear, makes piston action flexible.
Be a conical surface in described differential piston lower tip, and after the taper-face contact in housing, be a linear sealing form.
As a further improvement on the present invention, described solenoid valve is provided with the proximity switch of monitoring valve core of the electromagnetic valve position, sends feedback signal like this after solenoid valve action, effectively can guarantee that the action of pressure stopper is accurate.
Described solenoid valve is the solenoid valve of Single electromagnet or the solenoid valve for double electromagnet.
Working principle of the present invention is: opening direction: control port is located at cover plate bottom, and buffering hydraulic fluid port is located on the spacing seam neutral position of cover plate.When piston is opened, the oil of upper piston area can be discharged by two hydraulic fluid ports simultaneously, and the opening speed of piston is adjusted by the throttle orifice size in control port; When piston is close to fully open position, control port is closed by piston, the oil of upper piston area can only be discharged by buffering hydraulic fluid port, damping throttle orifice is less, therefore the opening speed of piston can reduce greatly, to prevent the too fast impact to cover plate of opening speed, the effect of buffering regulates by the size adjusting damping throttle orifice.Closing direction: buffering hydraulic fluid port is bottom oil back chamber, and control port is on top; Operating principle is identical with opening direction with adjustment mode.
Compared with prior art, the present invention has following beneficial effect:
One, because mounting type is variable, the needs of multiple installation, Placement can be adapted to; Because structure is simple, the series product that piston and the internal diameter of housing just can be designed to different latus rectum only need be changed.
Two, because lining and piston unite two into one, overall dimensions is compared cartridge valve and can be greatly reduced, and has saved material, processing charges, decreases Whole Equipment weight and required installing space.
Four, owing to have employed classification Cushioning Design, the stable action of whole device is adjustable, without impact, noise free, reduces the possibility of impacting the seal failure caused, the working life of extension device.
Five, owing to eliminating closedown spring, when opening, less by the pressure loss of valve group.
Six, Controlling solenoid valve is with position switch; proximity switch is equipped with on device top; switching signal can be put into the opening of turbine-generator units, shut down in flow process; guarantee to cause fault because the action of pressure stopper is not in place in start process; also ensure to shut down reliably blocking of rear pressure oil, ensure the safety of unit.
Seven, device top now indicates with open and close, when overhauling unit, now can confirm the state of pressure stopper, and can take measures to ensure that pressure stopper is at closed positions.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Reference character is: 1 be cover plate, 2 be housing, 3 be differential piston, 4 be oil outlet for controlling mouth, 5,7 be oil back chamber, 8 be push rod for buffer mouth 6.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
By a pressure stopper for electromagnetic valve opening and closing, comprise housing, piston, cover plate, solenoid valve; Described cover plate is arranged on housing upper opening for closed shell, solenoid valve to be arranged on housing or on cover plate for the switching of hydraulic control oil; Housing is divided into pressure oil cavity, goes out oil pocket, oil back chamber, control oil pocket by described Piston assembling in housing, the housing controlling oil pocket and oil back chamber is equipped with control port and buffering hydraulic fluid port, the control port controlled on oil pocket housing is positioned at above buffering hydraulic fluid port, control port on oil back chamber housing is positioned at below buffering hydraulic fluid port, be equipped with throttle orifice in described control port and buffering hydraulic fluid port, the throttle orifice latus rectum in control port is greater than the throttle orifice latus rectum in buffering hydraulic fluid port.Pressure oil enters control chamber, and because piston is differential piston, control chamber sectional area is greater than the sectional area of pressure oil cavity, and piston moves downward, and realizes the closedown of pressure stopper; When oil back chamber leads to oil return, piston is opened under the effect of back oil cavity pressure and pressure oil cavity.
Described housing bottom connects pressure oil tank, and side is fuel-displaced.In order to satisfied dullness, two tune and be multiple oil circuit fuel feeding such as overspeed limiting and emergency distributing valve, multiple oil outlet can be established in side.Bottom by Flange joint, also can be designed to board-like Placement, to meet the needs of multiple installation, Placement.
Differential piston lower tip is a conical surface, and after the taper-face contact in housing is a linear sealing form, effectively can ensure the reliability sealed like this.After there are possible wearing and tearing in piston, housing, can auto modification and still ensure to be a linear sealing form, so increase the working life of equipment.
Claims (9)
1. by a pressure stopper for electromagnetic valve opening and closing, it is characterized in that, comprise housing, piston, cover plate, solenoid valve; Described cover plate is arranged on housing upper opening for closed shell, solenoid valve to be arranged on housing or on cover plate for the switching of hydraulic control oil; Housing is divided into pressure oil cavity, goes out oil pocket, oil back chamber, control oil pocket by described Piston assembling in housing, the housing controlling oil pocket and oil back chamber is equipped with control port and buffering hydraulic fluid port, the control port controlled on oil pocket housing is positioned at above buffering hydraulic fluid port, control port on oil back chamber housing is positioned at below buffering hydraulic fluid port, be equipped with throttle orifice in described control port and buffering hydraulic fluid port, the throttle orifice latus rectum in control port is greater than the throttle orifice latus rectum in buffering hydraulic fluid port.
2. the pressure stopper by electromagnetic valve opening and closing according to claim 1, is characterized in that, described piston is provided with a push rod, and the top of this push rod is through cover plate.
3. the pressure stopper by electromagnetic valve opening and closing according to claim 2, the underpart of described push rod is spherical structure, and is fixed on piston by flange.
4. the pressure stopper by electromagnetic valve opening and closing according to claim 1, is characterized in that, described cover plate is also equipped with visual indicative mark.
5. the pressure stopper by electromagnetic valve opening and closing according to claim 1, is characterized in that, described cover plate is also equipped with the proximity switch of monitoring piston position.
6. the pressure stopper by electromagnetic valve opening and closing according to claim 1, it is characterized in that, described piston is differential piston, all has balancing slit in the side, upper and lower of this differential piston.
7. the pressure stopper by electromagnetic valve opening and closing according to claim 6, it is characterized in that, be a conical surface in described differential piston lower tip, and after the taper-face contact in housing is a linear sealing form.
8. the pressure stopper by electromagnetic valve opening and closing according to claim 1, it is characterized in that, described solenoid valve is provided with the proximity switch of monitoring valve core of the electromagnetic valve position.
9. the pressure stopper by electromagnetic valve opening and closing according to claim 7, is characterized in that, described solenoid valve is the solenoid valve of Single electromagnet or the solenoid valve for double electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493553.6A CN103850998B (en) | 2012-11-28 | 2012-11-28 | A kind of pressure stopper by electromagnetic valve opening and closing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493553.6A CN103850998B (en) | 2012-11-28 | 2012-11-28 | A kind of pressure stopper by electromagnetic valve opening and closing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103850998A CN103850998A (en) | 2014-06-11 |
| CN103850998B true CN103850998B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210493553.6A Active CN103850998B (en) | 2012-11-28 | 2012-11-28 | A kind of pressure stopper by electromagnetic valve opening and closing |
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| Country | Link |
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| CN (1) | CN103850998B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016201474A1 (en) * | 2016-02-01 | 2017-08-03 | Robert Bosch Gmbh | Valve anchor for a solenoid valve and valve cartridge for a solenoid valve |
| CN110094244B (en) * | 2019-05-13 | 2021-09-10 | 哈尔滨工程大学 | Electro-hydraulic fully-variable gas distribution actuator and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290820A (en) * | 1999-10-01 | 2001-04-11 | 速睦喜股份有限公司 | Linear driver with air buffer machanism |
| DE20106764U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz, Heinz, 45770 Marl | Mining cylinder with coating |
| DE20106761U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz, Heinz, 45770 Marl | Hydraulic cylinder with end position damping |
| CN201209679Y (en) * | 2008-04-18 | 2009-03-18 | 山东泰丰液压设备有限公司 | Proportional guide servo control fully-active throttle cartridge valve |
| CN101550953A (en) * | 2009-04-30 | 2009-10-07 | 山东泰丰液压设备有限公司 | Large-flow double-active electro-hydraulic proportion cartridge throttle valve system |
-
2012
- 2012-11-28 CN CN201210493553.6A patent/CN103850998B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290820A (en) * | 1999-10-01 | 2001-04-11 | 速睦喜股份有限公司 | Linear driver with air buffer machanism |
| DE20106764U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz, Heinz, 45770 Marl | Mining cylinder with coating |
| DE20106761U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz, Heinz, 45770 Marl | Hydraulic cylinder with end position damping |
| CN201209679Y (en) * | 2008-04-18 | 2009-03-18 | 山东泰丰液压设备有限公司 | Proportional guide servo control fully-active throttle cartridge valve |
| CN101550953A (en) * | 2009-04-30 | 2009-10-07 | 山东泰丰液压设备有限公司 | Large-flow double-active electro-hydraulic proportion cartridge throttle valve system |
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| Publication number | Publication date |
|---|---|
| CN103850998A (en) | 2014-06-11 |
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Effective date of registration: 20181122 Address after: 618000 No. 18, Third Section of Lushan South Road, Deyang City, Sichuan Province Co-patentee after: Dongfang Electric Group Dongfang Motor Co., Ltd. Patentee after: Dongfang Electric Automatic Control Engineering Co., Ltd. Address before: 618000 No. 99 Pearl River East Road, Deyang Economic and Technological Development Zone, Sichuan Province Co-patentee before: Dongfang Electric Group Dongfang Motor Co., Ltd. Patentee before: DFEM Control Equipment Co., Ltd. |