CN201963462U - Segmented closing device for adjusting closing speed of water-pumping and energy-accumulating machine set - Google Patents
Segmented closing device for adjusting closing speed of water-pumping and energy-accumulating machine set Download PDFInfo
- Publication number
- CN201963462U CN201963462U CN2010206341257U CN201020634125U CN201963462U CN 201963462 U CN201963462 U CN 201963462U CN 2010206341257 U CN2010206341257 U CN 2010206341257U CN 201020634125 U CN201020634125 U CN 201020634125U CN 201963462 U CN201963462 U CN 201963462U
- Authority
- CN
- China
- Prior art keywords
- valve
- directional control
- control valve
- mouth
- pilot operated
- 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 - Lifetime
Links
Images
Classifications
-
- 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
Landscapes
- Control Of Water Turbines (AREA)
Abstract
The utility model provides a segmented closing device for adjusting the closing speed of a water-pumping and energy-accumulating machine set. The device comprises a segmented closing valve FD I, a segmented closing valve FD II and a segmented closing hydraulic valve integrated block JCK. The FD I comprises a hydraulic control reversing valve V1 and an electromagnetic reversing valve V2. The segmented closing valve FD II comprises a hydraulic control reversing valve V3, a shuttle valve S1 and three cartridge valves C1, C2 and C3. The segmented closing hydraulic valve integrated block comprises two stroke reversing valves V4 and V6 and two electromagnetic reversing valves V5 and V7. The segmented closing valve FD I is used for realizing a first segment of closing curve under a water pump direction, the segmented closing valve FD II is used for realizing a second segment of closing curve under a water turbine direction and the water pump direction, and the segmented closing hydraulic valve integrated block is used for judging the segmented closing inflection point under the water turbine direction and the water pump direction. The device is used for adjusting the different closing speeds of the water-pumping and energy-accumulating machine set under the water turbine direction and the water pump direction, so that the safe and reliable running of the water-pumping and energy-accumulating machine set is guaranteed.
Description
Technical field
The utility model relates to a kind of subsection and closed device of rate adaptation, especially relates to a kind of subsection and closed device of realizing that pumped storage unit shutdown rate is regulated.
Background technique
Subsection and closed device is as one of main auxiliary control appliance of water power plant speed control system, can guarantee that water turbine cuts out according to the requirement of regulate to guarantee calculating, both guaranteed the speed of closing, guarantee that again unit is in the scope of rising in safety of rising of closing the closed procedure medium speed and hydraulic pressure, if subsection and closed device is correct operation in time, might cause that unit is overrun or hydraulic pressure is too high causes the penstock explosion, therefore necessarily require subsection and closed device safe and reliable.Conventional subsection and closed device be divided into Purely mechanical with electric, the subsection and closed device of Purely mechanical is installed and is adjusted inconvenience, but safe and reliable, the subsection and closed device of electric is installed easy to adjust, but may exist broken string or bad connection etc. to cause subsection and closed device to be failure to actuate.The pumped storage unit has positive and negative both direction rotation, generally at both direction different Closing Law is arranged all, for example certain pumped storage power station, when the water turbine direction is rotated, the sequence closing rule as shown in Figure 1, when the water pump direction was rotated, the sequence closing rule was as shown in Figure 2.Can see that from Fig. 1 and Fig. 2 the sequence closing rule is 4 straight lines that slope is different,, can only satisfy the Closing Law of Fig. 1 or Fig. 2 if design according to the subsection and closed device of conventional hydropower station.
Therefore different sequence closing rule when realizing the positive and negative both direction rotation of pumped storage unit is considered the Security of pumped storage power station simultaneously, needs design new mechanical subsection and closed device.
The model utility content
The utility model device technical problem to be solved is, overcome the deficiencies in the prior art, a kind of subsection and closed device of realizing that pumped storage unit shutdown rate is regulated is provided, guarantees that the pumped storage unit can be according to regulating safe and reliable the closing that require that guarantees calculating.
The technological scheme that its technical problem that solves the utility model adopts is as follows: realize the subsection and closed device that pumped storage unit shutdown rate is regulated, it is characterized in that composition comprises: sequence closing valve FD I, sequence closing valve FD II, sequence closing hydrovalve integrated package JCK.
Sequence closing valve FD I comprises pilot operated directional control valve V1, solenoid directional control valve V2, and wherein V1 is the 2/2-way pilot operated directional control valve, and V2 is two four-way electromagnetic reversing valves, and V2 is installed on the valve body of pilot operated directional control valve V1, is used to control the commutation of pilot operated directional control valve V1.
Sequence closing valve FD II comprises 3-position 4-way pilot operated directional control valve V3, shuttle valve S1 and cartridge valve C1, C2, C3, and wherein cartridge valve C1, C2, C3 are integrated in same valve body, and pilot operated directional control valve V3 and shuttle valve S1 are installed on the valve body, are used to control the switch of cartridge valve.
Sequence closing hydrovalve integrated package JCK comprises two four-way return of stroke valve V4, V6 and two four-way electromagnetic reversing valve V5, V7, wherein return of stroke valve V4 and solenoid directional control valve V5 are one group, return of stroke valve V6 and solenoid directional control valve V7 are another group, are used to judge water turbine/water pump direction flex point signal.
Sequence closing valve FD I and sequence closing valve FD II are series at speed control system and begin to speak in the pipeline, and sequence closing hydrovalve integrated package JCK is arranged in guide vane servomotor next door in the foundation ditch.The process oil pipeline JG that guide vane servomotor closes the chamber links to each other with the P mouth that guide vane servomotor closes chamber and pilot operated directional control valve V3, the process oil pipeline JK that guide vane servomotor is begun to speak links to each other with the A mouth of pilot operated directional control valve V1, pilot pressure oil pipe line P1 links to each other with the P mouth of solenoid directional control valve V2, the B mouth of pilot operated directional control valve V1 and cartridge valve C1, C2, the A1 of C3, A2, the A3 mouth links to each other, cartridge valve C1, C2, the B1 of C3, B2, B3 mouth and the guide vane servomotor pipeline of beginning to speak links to each other, pilot pressure oil pipe line P2 and return of stroke valve V4, the P mouth of V6 links to each other, the A mouth of return of stroke valve V4 links to each other with the P mouth of solenoid directional control valve V5, the A mouth of return of stroke valve V6 links to each other with the P mouth of solenoid directional control valve V7, the B mouth of solenoid directional control valve V5 links to each other with a of pilot operated directional control valve V3 end liquid controling cavity, and the A mouth of solenoid directional control valve V7 links to each other with the b of pilot operated directional control valve V3 end liquid controling cavity.
Sequence closing valve FD I is used for realizing the following first section pass closed curve of water pump direction, and sequence closing valve FD II is used for realizing water pump direction and the following second section pass closed curve of water turbine direction (first section pass closed curve under the water turbine direction adjusted by main control valve).Sequence closing hydrovalve integrated package is used for judging the flex point of water turbine direction and water pump direction sequence closing.
The utility model working principle and process are as follows:
When unit operation during in the water turbine direction solenoid directional control valve V2, V5 and V7 electromagnetic coil not charged, subsection and closed device runs on the water turbine direction; When unit operation during in the water pump direction, solenoid directional control valve V2, V5 and V7 get electric (this electrical signal is the water pump direction signal), and subsection and closed device runs on the water pump direction.
When the sequence closing function did not drop into, solenoid directional control valve V2 worked in right position, the logical pressure oil of a end liquid controling cavity of pilot operated directional control valve V1, and pilot operated directional control valve V1 works in position, a left side, and sequence closing valve FD I does not play throttling action; Pilot operated directional control valve V3 works in meta, all logical oil return of the control chamber of 3 cartridge valves, and pressure oil can begin to speak to link to each other with guide vane servomotor by 3 cartridge valves, and sequence closing valve FD II does not play throttling action.
When the sequence closing function drops into:
(1) water turbine direction
When unit when the water turbine direction is moved, solenoid directional control valve V2, V5 and V7 electromagnetic coil are not charged, subsection and closed device is in the water turbine direction.
First section speed of sequence closing is by the main control valve adjustment.Second section speed is adjusted by sequence closing valve FD II, when reaching flex point, wedge-shaped blocks touches return of stroke valve V4, V6, the commutation of return of stroke valve, pilot operated directional control valve V3 left end control chamber leads to pressure oil, V3 works in position, a left side, cartridge valve C1, the C2 control chamber leads to pressure oil, cartridge valve C1, C2 closes, cartridge valve C3 control chamber leads to oil return, C3 opens, and at this moment, the guide vane servomotor oil return is by cartridge valve C3 throttling, sequence closing valve FD II plays throttling action, the shutdown rate of guide vane servomotor is slack-off, can adjust the valve core opening size by regulating C3 top adjusting nut, thereby change shutdown rate.
(2) water pump direction
When unit during in the water pump direction, solenoid directional control valve V2, V5 and V7 electromagnetic coil get electric (this electrical signal is the water pump direction signal), and subsection and closed device is in the water pump direction.
Solenoid directional control valve V2 works in position, a left side, the logical pressure oil of b end of pilot operated directional control valve V1, pilot operated directional control valve V1 works in right position, sequence closing valve FD I plays throttling action, first section speed of sequence closing is adjusted by sequence closing valve FD I, regulate the adjusting screw rod on the sequence closing valve FD I, can regulate first section shutdown rate.Second section speed is adjusted by sequence closing valve FD II, when reaching flex point, wedge-shaped blocks touches return of stroke valve V4, V6, the commutation of return of stroke valve, pilot operated directional control valve V3 right-hand member control chamber leads to pressure oil, V3 works in right position, cartridge valve C1, the C3 control chamber leads to pressure oil, cartridge valve C1, C3 closes, cartridge valve C2 control chamber leads to oil return, C2 opens, and at this moment, the guide vane servomotor oil return is by cartridge valve C2 throttling, sequence closing valve FD II plays throttling action, the shutdown rate of guide vane servomotor is slack-off, can adjust the valve core opening size by regulating C2 top adjusting nut, thereby change shutdown rate.
The beneficial effects of the utility model are as follows: the utility model device level of integration height, pure machinery action, safe and reliable, realize the adjusting of pumped storage unit water turbine direction and the different shutdown rates of water pump direction, guaranteed the safe and reliable operation of pumped storage unit.
Description of drawings
Fig. 1 is certain pumped storage power station water turbine direction sequence closing rule.
Fig. 2 is certain pumped storage power station water pump direction sequence closing rule.
Fig. 3 realizes the subsection and closed device principle schematic that pumped storage unit shutdown rate is regulated for the utility model.
Embodiment
With reference to the accompanying drawings the utility model is described in further detail.
As shown in Figure 3, the utility model is realized the subsection and closed device that pumped storage unit shutdown rate is regulated.Form by sequence closing valve FD I, sequence closing valve FD II and sequence closing hydrovalve integrated package.Sequence closing valve FD I comprises pilot operated directional control valve V1, solenoid directional control valve V2.Sequence closing valve FD II comprises pilot operated directional control valve V3, shuttle valve S1 and cartridge valve C1, C2, C3.Sequence closing hydrovalve integrated package comprises return of stroke valve V4, V6 and solenoid directional control valve V5, V7.
Sequence closing valve FD I adopts slide-valve structure, and main valve V1 is the 2/2-way pilot operated directional control valve, and two hydraulic control ends of a, b are arranged, and pilot valve V2 is two four-way electromagnetic reversing valves, and P, T, four hydraulic fluid ports of A, B are arranged.When the sequence closing function did not drop into, solenoid directional control valve V2 worked in right position (be the logical A of P, T leads to B), the logical pressure oil of a end liquid controling cavity of main valve V1, and the logical oil return of b end liquid controling cavity, main valve V1 works in position, a left side, and spool does not play throttling action.When the sequence closing function dropped into, solenoid directional control valve V2 electromagnetic coil got electric, and V2 works in position, a left side (be the logical B of P, T leads to A), the logical oil return of a end liquid controling cavity of main valve V1, and the logical pressure oil of b end liquid controling cavity, main valve V1 works in right position, and spool plays throttling action.
Sequence closing valve FD II adopts cartridge valve formula structure, is made up of 3-position 4-way pilot operated directional control valve V3, shuttle valve S1 and three cartridge valves.Pilot operated directional control valve V3 has two hydraulic control ends of a, b and P, T, four hydraulic fluid ports of A, B.Sender when pressure relay KD01 and KD02 are used for the action of sequence closing valve FD II.When the sequence closing function did not drop into, pilot operated directional control valve V3 worked in meta (being all logical T of A, B), all logical oil return of the control chamber of three cartridge valves, and three cartridge valves are all opened, and sequence closing valve FD II does not play throttling action.When water turbine direction sequence closing function drops into, pilot operated directional control valve V3 left end control chamber leads to pressure oil, it (is the logical B of P that V3 works in position, a left side, T leads to A), cartridge valve C1, the logical pressure oil of C2 control chamber, cartridge valve C1, C2 close, cartridge valve C3 control chamber leads to oil return, C3 opens, and at this moment, the guide vane servomotor oil return is by cartridge valve C3 throttling, sequence closing valve FD II plays throttling action, the shutdown rate of guide vane servomotor is slack-off, can adjust the valve core opening size by regulating C3 top adjusting nut, thereby change shutdown rate.When water pump direction sequence closing function drops into, it (is the logical A of P that pilot operated directional control valve V3 right-hand member control chamber leads to pressure oil, T leads to B), V3 works in right position, cartridge valve C1, the logical pressure oil of C3 control chamber, cartridge valve C1, C3 close, cartridge valve C2 control chamber leads to oil return, C2 opens, and at this moment, the guide vane servomotor oil return is by cartridge valve C2 throttling, sequence closing valve FD II plays throttling action, the shutdown rate of guide vane servomotor is slack-off, can adjust the valve core opening size by regulating C2 top adjusting nut, thereby change shutdown rate.
Sequence closing hydrovalve integrated package is arranged in the guide vane servomotor next door, is used to judge the flex point of sequence closing under water turbine direction and the water pump direction, is made up of return of stroke valve V4, V6 and solenoid directional control valve V5, V7, and four valves all have P, T, four hydraulic fluid ports of A, B.Under the water turbine direction, solenoid directional control valve V5, V7 electromagnetic coil are not charged (to be the logical A of P, T leads to B), when guide vane servomotor is closed to corner position, wedge-shaped blocks touches return of stroke valve V4, V6, the commutation of return of stroke valve, the A mouth of solenoid directional control valve V7 leads to pressure oil, and this pressure oil acts on a end liquid controling cavity of sequence closing valve FD II.Under the water pump direction, it is electric that solenoid directional control valve V5, V7 electromagnetic coil get (is the logical B of P, T leads to A), when guide vane servomotor is closed to corner position, wedge-shaped blocks touches return of stroke valve V4, V6, the commutation of return of stroke valve, the B mouth of solenoid directional control valve V5 leads to pressure oil, and this pressure oil acts on the b end liquid controling cavity of sequence closing valve FD II.
Claims (2)
1. realize the subsection and closed device that pumped storage unit shutdown rate is regulated, it is characterized in that forming by sequence closing valve FD I, sequence closing valve FD II and sequence closing hydrovalve integrated package JCK;
Sequence closing valve FD I comprises pilot operated directional control valve V1, solenoid directional control valve V2, and wherein V1 is the 2/2-way pilot operated directional control valve, and V2 is two four-way electromagnetic reversing valves, and V2 is installed on the valve body of pilot operated directional control valve V1, is used to control the commutation of pilot operated directional control valve V1;
Sequence closing valve FD II comprises 3-position 4-way pilot operated directional control valve V3, shuttle valve S1 and cartridge valve C1, C2, C3, and wherein cartridge valve C1, C2, C3 are integrated in same valve body, and pilot operated directional control valve V3 and shuttle valve S1 are installed on the valve body, are used to control the switch of cartridge valve;
Sequence closing hydrovalve integrated package JCK comprises two four-way return of stroke valve V4, V6 and two four-way electromagnetic reversing valve V5, V7, wherein return of stroke valve V4 and solenoid directional control valve V5 are one group, return of stroke valve V6 and solenoid directional control valve V7 are another group, are used to judge water turbine/water pump direction flex point signal;
Sequence closing valve FD I and sequence closing valve FD II are series at speed control system and begin to speak in the pipeline, and sequence closing hydrovalve integrated package JCK is arranged in guide vane servomotor next door in the foundation ditch; The process oil pipeline JG that guide vane servomotor closes the chamber links to each other with the P mouth that guide vane servomotor closes chamber and pilot operated directional control valve V3, the process oil pipeline JK that guide vane servomotor is begun to speak links to each other with the A mouth of pilot operated directional control valve V1, pilot pressure oil pipe line P1 links to each other with the P mouth of solenoid directional control valve V2, the B mouth of pilot operated directional control valve V1 and cartridge valve C1, C2, the A1 of C3, A2, the A3 mouth links to each other, cartridge valve C1, C2, the B1 of C3, B2, B3 mouth and the guide vane servomotor pipeline of beginning to speak links to each other, pilot pressure oil pipe line P2 and return of stroke valve V4, the P mouth of V6 links to each other, the A mouth of return of stroke valve V4 links to each other with the P mouth of solenoid directional control valve V5, the A mouth of return of stroke valve V6 links to each other with the P mouth of solenoid directional control valve V7, the B mouth of solenoid directional control valve V5 links to each other with a of pilot operated directional control valve V3 end liquid controling cavity, and the A mouth of solenoid directional control valve V7 links to each other with the b of pilot operated directional control valve V3 end liquid controling cavity.
2. the subsection and closed device that realization pumped storage unit shutdown rate according to claim 1 is regulated, it is characterized in that described sequence closing valve FD I adopts slide-valve structure, main valve V1 is the 2/2-way pilot operated directional control valve, and pilot valve V2 is two four-way electromagnetic reversing valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206341257U CN201963462U (en) | 2010-11-30 | 2010-11-30 | Segmented closing device for adjusting closing speed of water-pumping and energy-accumulating machine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206341257U CN201963462U (en) | 2010-11-30 | 2010-11-30 | Segmented closing device for adjusting closing speed of water-pumping and energy-accumulating machine set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963462U true CN201963462U (en) | 2011-09-07 |
Family
ID=44525998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206341257U Expired - Lifetime CN201963462U (en) | 2010-11-30 | 2010-11-30 | Segmented closing device for adjusting closing speed of water-pumping and energy-accumulating machine set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963462U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042159A (en) * | 2010-11-30 | 2011-05-04 | 国网电力科学研究院 | Stepped closing device capable of adjusting closing rate of pumped storage group |
| CN109139350A (en) * | 2018-09-29 | 2019-01-04 | 东方电机控制设备有限公司 | A kind of overspeed protection and volume control device for hydroenergy storage station |
-
2010
- 2010-11-30 CN CN2010206341257U patent/CN201963462U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042159A (en) * | 2010-11-30 | 2011-05-04 | 国网电力科学研究院 | Stepped closing device capable of adjusting closing rate of pumped storage group |
| CN102042159B (en) * | 2010-11-30 | 2013-03-06 | 国网电力科学研究院 | Stepped closing device capable of adjusting closing rate of pumped storage group |
| CN109139350A (en) * | 2018-09-29 | 2019-01-04 | 东方电机控制设备有限公司 | A kind of overspeed protection and volume control device for hydroenergy storage station |
| CN109139350B (en) * | 2018-09-29 | 2024-01-26 | 东方电气自动控制工程有限公司 | Overspeed protection and flow control device for pumped storage power station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102042159B (en) | Stepped closing device capable of adjusting closing rate of pumped storage group | |
| CN203702702U (en) | Hydraulic control system and concrete pumping equipment | |
| CN102434372B (en) | Small-scale speed regulator comprehensive adjusting device based on hydraulic pressure integration technology | |
| CN100526637C (en) | Hydraulic turbine drum valve electrohydraulic synchronous control system | |
| CN201581382U (en) | Electro-hydraulic proportional control piston type two-lifting-point hydraulic hoist | |
| CN104632794A (en) | Electro-hydraulic servo system of direct drive type hydraulic hoist | |
| CN202349272U (en) | Double gate valve | |
| CN106402060A (en) | Direct drive type volume control electrohydraulic servo hydraulic system for hydraulic press | |
| CN201560422U (en) | Electro-hydraulic proportional control piston-type single-hoisting-point hydraulic hoist | |
| CN203348203U (en) | Speed-regulating hydraulic control valve group of large-flow two-way cartridge valve | |
| CN108488112A (en) | large-flow hydraulic system differential circuit and its control method | |
| CN201963462U (en) | Segmented closing device for adjusting closing speed of water-pumping and energy-accumulating machine set | |
| CN204200723U (en) | Mine hoist hydraulic station modified node method | |
| CN103089721A (en) | High-flow electric-hydraulic proportional cartridge valve hydraulic control system for differential speed regulation | |
| CN109236554A (en) | Guide vane closes system and its control method when pump-storage generator failure | |
| CN209145765U (en) | Guide vane closes system when a kind of pump-storage generator failure | |
| CN209429080U (en) | Lock indoor ecological discharge tube structure | |
| CN103911972B (en) | A kind of novel flap valve control system | |
| CN203847321U (en) | Hydraulic control system of hydropower station pressure regulating valve | |
| CN203594061U (en) | Rotation hydraulic control device of excavator movable arm platform | |
| CN203113290U (en) | Novel flap valve control system | |
| CN102635491B (en) | Combined adjusting method of water turbine | |
| CN206874589U (en) | One kind impact oil passage control valve | |
| CN201588194U (en) | Piston single hoisting-point hydraulic hoist | |
| CN100557231C (en) | Electrohydraulic synchronous cylinder type valve servo synchronous control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |