CN201539347U - Main distributing pressure valve of super-huge type hydrogovernor - Google Patents
Main distributing pressure valve of super-huge type hydrogovernor Download PDFInfo
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- CN201539347U CN201539347U CN2009202286807U CN200920228680U CN201539347U CN 201539347 U CN201539347 U CN 201539347U CN 2009202286807 U CN2009202286807 U CN 2009202286807U CN 200920228680 U CN200920228680 U CN 200920228680U CN 201539347 U CN201539347 U CN 201539347U
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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 utility model provides a main distributing pressure valve of a super-huge type hydrogovernor. The main distributing valve comprises a main distributing valve body, a valve cap, a main distributing piston, a piston rod, a bearing spring, an available-machine-time adjustable range controlling port, an off-time adjustable range controlling port and a pressure oil port, wherein the upper part of the main distributing piston is connected with a piston of a middle servomotor; a big head of the piston of the middle servomotor is matched with the main distributing valve body to form a control chamber A and a control chamber B which form the middle servomotor; a connecting substrate is fixed at the upper part of the valve cap, a middle cylinder body is mounted on the connecting substrate, a middle piston cylinder is arranged in the middle cylinder body, a middle piston is arranged in the middle piston cylinder, and a constant voltage chamber C is formed between the middle piston cylinder and the middle piston; an oil inlet extending to the constant voltage chamber C is formed on the middle piston cylinder; and the main distributing piston, the piston of the middle servomotor and the piston rod are integrated. The valve cap is a pile-up valve cap, and a runner is formed in the pile-up valve cap and communicated with a combination integrated block of a double-proportion valve of the controlling part of the main distributing pressure valve on the left side of the upper part of the valve cap.
Description
Technical field
The utility model relates to a kind of super-huge hydrogovernor main control valve, and especially for the main control valve of single-machine capacity above the giant turbine speed regulator of 300,000 KW, suitable pressure range is 2.5-6.3Mpa, and the main valve peak rate of flow is 202.5L/S.Belong to hydrogovernor hydraulic control field.
Background technique
Main control valve is a kind of guiding valve that plays control liquid flow path direction and size, why being called main control valve is because it is the guiding valve that finally plays control actuator (servomotor) effect in speed regulator, be used to control the stator of water turbine and the aperture of paddle, realize automatic adjusting and control the water wheels unit.
Generally use the diameter of main control valve piston or the grade of operating oil pressure for Large Speed Governor, characterize the size of its displacement volume, belong to giant turbine for the main control valve of φ 250mm and 6.3Mpa.
Hydrogovernor has experienced the development of various ways, and having mechanical hydraulic governor to develop into electric hydraulic valve speed regulator is a big transformation, after this changes mainly at electric part over 40 years.But the main control valve as the power amplification parts is not substituted along with development of electronic technology, and on the contrary, it is as the requisite main valve member of electro-hydraulic servo device, and its function is developed.
Since the seventies, China has imported and exported Japan, Sweden, and the speed regulator of Austria etc. countries, their master joins to press and adopts workpiece, simultaneously with auxiliary receiver piston and main control valve or be integral.As far back as the eighties, my company has designed the integrated direct linkage type main control valve of KZT type piston, for maintenance provides great convenience with reference to this structure.
Development along with the water power cause, the appearance of particularly large-scale, super-huge water turbine, the large-scale water turbine speed regulator is had higher requirement, except that reliable, also require quiet, dynamic indicator is superior, it is zero failure that general hydroelectric power plant requires speed regulator, otherwise the fault that occurs may be catastrophic.
The experience of developing speed regulator and field adjustable for many years according to us as can be known because the on-the-spot cleanliness of hydraulic oil degree in China hydroelectric power plant is difficult to guarantee that therefore, the reliability that solves pilot stage is the focus that the industry is paid close attention to.Because large-scale water turbine speed regulator control mechanism inertia is big, low-response, the response that therefore improves the speed regulator pilot stage is little to the response effect of whole system.Improving the dynamic response of whole system, mainly is the response that improves terminal amplifier stage, i.e. the response of main control valve and main servomotor.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and is easy to adjust, further improves the super-huge hydrogovernor main control valve of control accuracy and speed of response.
The utility model is achieved through the following technical solutions: super-huge hydrogovernor main control valve of the present utility model comprises that the master joins valve body, valve gap, main piston, piston rod, bearing spring, available machine time regulation range control mouth, off time regulation range control mouth, the pressure hydraulic fluid port of joining, the main piston top of joining connects the pilot servomotor piston, and the major part of pilot servomotor piston cooperates formation control chamber A and control chamber B to constitute pilot servomotor with the main valve body of joining; At the fixedly connected pedestal in valve gap top, connect multiple middle cylinder body is installed on the pedestal, again middle piston cylinder in the multiple middle cylinder body, again middle piston in multiple, constitute constant voltage chamber C between piston cylinder and the multiple middle piston in multiple, the filler opening that feeds constant voltage chamber C is arranged on the piston cylinder in multiple, and it is an integral body that the master joins piston, pilot servomotor piston and piston rod.
Described super-huge hydrogovernor main control valve, on valve gap upper piston bar, connect long-armed limiting stopper, end at long-armed limiting stopper is established the start caging bolt, the hole that the lower end of start caging bolt is passed on the long-armed limiting stopper is fixed on the valve gap, and there is stop nut the upper end of start caging bolt; Other end at long-armed limiting stopper is provided with the shutdown caging bolt, and the shutdown caging bolt is installed in the screw of long-armed limiting stopper, and the lower end of shutdown caging bolt is as positive stop end.
Described valve gap is integrated valve gap, has runner to be communicated with two Proportional valve combination integrated packages of the main control valve control section that is installed in the valve gap upper left-hand in integrated valve gap.
Described super-huge hydrogovernor main control valve is established machine zero position adjustment cover between piston and the piston rod during it is multiple.
Described super-huge hydrogovernor main control valve, its main control valve pressure hydraulic fluid port P is connected with oil purifier with runner on the valve gap by the main valve body of joining, and the output of oil purifier is made up integrated packages by runner on the valve gap and pair Proportional valves and is connected.
Described super-huge hydrogovernor main control valve, it is main, and to join piston, pilot servomotor piston, piston rod three be an overall structure.
Advantage of the present utility model:
1, adopt two Proportional valve Redundant Control can improve the reliability of pilot stage.Secondly, remove pilot valve and auxiliary receiver, thoroughly removed pilot valve hair fastener fault.
2, no pilot valve has been simplified the driving structure of main control valve, makes main control valve be reduced to the one-level guiding valve by the secondary guiding valve, has improved sensitivity and quick-action; Having improved the dynamic response of whole system, mainly is the response that improves terminal amplifier stage, i.e. the response of main control valve and main servomotor.
3, designed unique hydraulic pressure multiple in device, simplified structure satisfies the needs of domestic electrical network;
4, the control valve of whole system is made up of the integrated package stack, and no exposed conduit, nothing are regulated rod member, guarantees the transmission of operation parts zero-clearance, no dead band, beautiful shape simultaneously.
Description of drawings
Fig. 1 is a sectional structure schematic representation of the present utility model.
Fig. 2 is the A-A sectional structure schematic representation of Fig. 1.
Embodiment
As Fig. 1, Fig. 2: super-huge hydrogovernor main control valve of the present utility model comprises: main valve body 4, valve gap 7, main piston 5, piston rod 1, bearing spring 2, a start control mouthful 4b, shutdown control mouthful 4c, a pressure hydraulic fluid port p, side cover 3, winding pipe assembly 24, the oil return flange 4a of joining of joining.It is pilot servomotor piston 11 that the master joins piston 5 tops, and the major part 11a of pilot servomotor piston 11 cooperates formation control chamber A and control chamber B to constitute pilot servomotor with the main valve body 4 of joining; At the fixedly connected valve seat 12 in valve gap 7 tops, connect multiple middle cylinder body 13 is installed on the valve seat 12, again middle piston cylinder 15 in the multiple middle cylinder body 13, again middle piston 14 in multiple, constitute constant voltage chamber " C " between piston cylinder 15 and the multiple middle piston 14 in multiple, the oil inlet P that feeds constant voltage chamber " C " is arranged on the piston cylinder 15 in multiple, establish machine zero adjustment cover 18 between multiple middle piston 14 and the piston rod 1.
The master joins piston 5, pilot servomotor piston 11 is an integral body with piston rod 1.
On valve gap 7 upper piston bars 1, connect long-armed position limiting slide block 8, establish start caging bolt 10 at an end of long-armed position limiting slide block 8, the hole that the lower end of start caging bolt 10 is passed on the long-armed position limiting slide block 8 is fixed on the valve gap 7, and there is stop nut 9 upper end of start caging bolt 10; At the other end of long-armed position limiting slide block 8, shutdown caging bolt 20 is arranged, shutdown caging bolt 20 is installed in the screw of long-armed position limiting slide block 8, and the lower end of closing caging bolt 20 is as positive stop end, and the adjustment nut is equipped with in the upper end of shutdown caging bolt 20; Be used for adjusting the governor switch machine time.
Valve gap 7 is integrated valve gap, has runner to be communicated with two Proportional valve combination integrated packages 22 of the main control valve control section that is installed in valve gap 7 upper left-hand in integrated valve gap.
The lifting surface area of main control valve control chamber A and control chamber B is bigger than device lifting surface area in multiple, is again the twice of middle device lifting surface area.Control chamber A equates with the lifting surface area of control chamber B, mutually offsets, so can control the motion of spool by the pressure size that changes control chamber A and control chamber B.
When control chamber A oil extraction, control chamber B leads to pressure oil, and control chamber B lifting surface area to be greatly again in the twice of device lifting surface area, so main join piston 5 and move upward the speed regulator unlatching; Otherwise the master joins piston 5 and moves downward, and speed regulator cuts out.
When the logical simultaneously pressure oil of control chamber A and control chamber B, control chamber A and the stressed of control chamber B mutually offset, and install under the active force in multiple, and it is motionless that spool is stabilized in meta.
See Fig. 2: two Proportional valve combination integrated packages 22 of main control valve control section comprise the electric liquid conversion equipment 22a of the two Proportional valve redundancies of overlapping on top; electricity liquid conversion equipment 22a bottom is connected with function sorting solenoid valve (promptly being the function sorting solenoid valve that Proportional valve 1 or 2 is devoted oneself to work) 22c1 by integrated package 22b; manually integrated package 22d links to each other with the automatic integrated package 22f of hand; hand automatic diverter valve 22c2 links to each other with the automatic integrated package 22f of hand then, and integrated package 22d is connected with emergency shutdown solenoid valve 22f with the manual solenoid valve 22e of mechanical-hydraulic.Guaranteed like this that speed regulator can realize that full redundancy is regulated automatically, the moving operation of electric hand and pure mechanical manually-operable.Then, the automatic integrated package 22f of hand links to each other with emergency shutdown integrated package 22h, and emergency shutdown solenoid valve 22g links to each other with emergency shutdown integrated package 22h.Last two Proportional valve combination integrated package 22 is connected with main control valve by the runner 7a that integrated valve covers.
Main control valve pressure hydraulic fluid port P is connected with duplex oil purifier 23 with runner on the valve gap 7 by the main valve body 4 of joining, and the output of duplex oil purifier 23 is made up integrated packages 22 by runner on the valve gap 7 and pair Proportional valves and is connected.Duplex oil purifier 23 is connected with main control valve by the runner 7b that integrated valve covers.Adopt the duplex oil purifier, can realize not shutting down the cleaning oil purifier.
The most characteristic multiple middle device of hydraulic pressure of this main control valve can guarantee the multiple middle function of the prerequisite outage of China's speed regulator, with the protection electrical network.The utility model is suitable for φ 250mm main control valve.
Claims (6)
1. super-huge hydrogovernor main control valve, comprise main valve body (4), valve gap (7), main piston (5), piston rod (1), bearing spring (2), available machine time regulation range control mouthful (4b), off time regulation range control mouthful (4c), the pressure hydraulic fluid port p of joining of joining, it is characterized in that: main piston (5) top of joining connects pilot servomotor piston (11), and the major part (11a) of pilot servomotor piston (11) cooperates formation control chamber A and control chamber B to constitute pilot servomotor with the main valve body (4) of joining; At the fixedly connected pedestal in valve gap (7) top (12), connect pedestal (12) and go up the multiple middle cylinder body (13) of installation, again middle piston cylinder (15) in the multiple middle cylinder body (13), again middle piston (14) in multiple, constitute constant voltage chamber C between multiple middle piston cylinder (15) and the multiple middle piston (14), on the multiple middle piston cylinder (15) oil inlet P that feeds constant voltage chamber C is arranged
1, the master joins piston (5), pilot servomotor piston (11) is an integral body with piston rod (1).
2. super-huge hydrogovernor main control valve according to claim 1, it is characterized in that: go up connection long-armed limiting stopper (8) at valve gap (7) upper piston bar (1), establish start caging bolt (10) at an end of long-armed limiting stopper (8), the hole that the lower end of start caging bolt (10) is passed on the long-armed limiting stopper (8) is fixed on the valve gap (7), and there is stop nut (9) upper end of start caging bolt (10); Other end at long-armed limiting stopper (8) is provided with shutdown caging bolt (20), and shutdown caging bolt (20) is installed in the screw of long-armed limiting stopper (8), and the lower end of shutdown caging bolt (20) is as positive stop end.
3. super-huge hydrogovernor main control valve according to claim 1 and 2, it is characterized in that: valve gap (7) is integrated valve gap, has runner to be communicated with two Proportional valve combination integrated packages (22) of the main control valve control section that is installed in valve gap (7) upper left-hand in integrated valve gap.
4. super-huge hydrogovernor main control valve according to claim 1 and 2 is characterized in that: establish machine zero position adjustment cover (18) between piston (14) and the piston rod (1) in multiple.
5. super-huge hydrogovernor main control valve according to claim 1 and 2, it is characterized in that: main control valve pressure hydraulic fluid port P joins valve body (4) and the runner on the valve gap (7) is connected with oil purifier (23) by main, and the output of oil purifier (23) is passed through runner on the valve gap (7) and pair Proportional valves and made up integrated packages (22) and be connected.
6. super-huge hydrogovernor main control valve according to claim 1 and 2 is characterized in that: the main piston (5), pilot servomotor piston (11), piston rod (1) three of joining is an overall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202286807U CN201539347U (en) | 2009-09-29 | 2009-09-29 | Main distributing pressure valve of super-huge type hydrogovernor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202286807U CN201539347U (en) | 2009-09-29 | 2009-09-29 | Main distributing pressure valve of super-huge type hydrogovernor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539347U true CN201539347U (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202286807U Expired - Lifetime CN201539347U (en) | 2009-09-29 | 2009-09-29 | Main distributing pressure valve of super-huge type hydrogovernor |
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| Country | Link |
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| CN (1) | CN201539347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089561A (en) * | 2016-06-20 | 2016-11-09 | 哈尔滨电机厂有限责任公司 | Large-scale pumped storage power unit Double-working-condition speed regulator main control valve |
-
2009
- 2009-09-29 CN CN2009202286807U patent/CN201539347U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089561A (en) * | 2016-06-20 | 2016-11-09 | 哈尔滨电机厂有限责任公司 | Large-scale pumped storage power unit Double-working-condition speed regulator main control valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100804 |
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| CX01 | Expiry of patent term |