CN205936957U - Governor of hydraulic turbine emergency shut down device based on double magnet valve and interstage valve - Google Patents
Governor of hydraulic turbine emergency shut down device based on double magnet valve and interstage valve Download PDFInfo
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- CN205936957U CN205936957U CN201620842207.8U CN201620842207U CN205936957U CN 205936957 U CN205936957 U CN 205936957U CN 201620842207 U CN201620842207 U CN 201620842207U CN 205936957 U CN205936957 U CN 205936957U
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- valve
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- 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 utility model discloses a governor of hydraulic turbine emergency shut down device based on double magnet valve and interstage valve, including first solenoid valve, second solenoid valve, interstage valve and main distributing valve, first solenoid valve, second solenoid valve series connection form twin coil control branch road, R and small size end J's hydraulic operated valve is held for having the large tracts of land to the interstage valve, it is continuous with the hydraulic power source that the large tracts of land of interstage valve end R passes through the dual control branch road, the small size end J of interstage valve and the main pressure oil pipe of hydraulic power source link to each other, main distributing valve tandem arrangement is between the servomotor of hydraulic power source and governor of hydraulic turbine's stator, the interstage valve concatenates to be arranged on the control circuit of main distributing valve. The utility model discloses can avoid single solenoid valve body trouble to arouse speed regulator malfunction emergency shut down, improve the reliability of emergency shut down device, have simple structure, advantage that fail safe nature is high.
Description
Technical field
This utility model is related to hydrogovernor hydraulic-pressure control apparatus and in particular to a kind of be based on dual-coil electromagnetic valve and linkage
The hydrogovernor emergency stop device of valve.
Background technology
Hongjiang power plant #3, #6 machine speed regulator is domestic speed regulator equipment, reaches the limited public affairs of electric share by Yangtze River Gorges what one is particularly good at
Department manufactures, and the emergency stop device of the type speed regulator is only controlled by a single-coil electromagnetic valve, occurs in that #6 unit within 2015
In running, the fault of this single-coil electromagnetic valve coil fusing, cause hydrogovernor misoperation emergency shutdown, make
Become electric quantity loss, power plant is also examined by scheduling institution.Single electromagnetic valve design of this speed regulator emergency stop device, seriously
Have impact on the safe and stable operation of unit.
Utility model content
The technical problems to be solved in the utility model：For the problems referred to above of prior art, provide one kind it can be avoided that list
Individual solenoid valve body fault causes speed regulator misoperation emergency shutdown, improves the reliability of emergency stop device, and structure is simple, peace
The complete high hydrogovernor emergency stop device based on dual-coil electromagnetic valve and interstage valve of reliability.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of hydrogovernor emergency stop device based on dual-coil electromagnetic valve and interstage valve, including the first electromagnetic valve,
Two electromagnetic valves, interstage valve and main control valve, described first electromagnetic valve, the second electromagnetic valve are connected in series to form twin coil control
Road, described interstage valve is the hydraulic operated valve with large area end R and small area end J, and the large area end R of described interstage valve passes through dual control
Branch road processed is connected with hydraulic power source, and the small area end J of described interstage valve is connected with the principal pressure oil pipe of hydraulic power source, described main control valve
Between the servomotor of hydraulic power source and the stator of hydrogovernor, described interstage valve concatenation is arranged in main control valve to arranged in series
Control loop on.
Preferably, described first electromagnetic valve, the second electromagnetic valve are two-position three way unicoil solenoid directional control valve, and described first
The A mouth of electromagnetic valve is connected with the oil exit pipe of hydraulic power source, B mouth is connected with the principal pressure oil pipe of hydraulic power source, P mouth and the second electromagnetic valve
B mouth is connected, and the A mouth of described second electromagnetic valve is connected with the oil exit pipe of hydraulic power source, P mouth is connected with the large area end R of interstage valve.
Preferably, described interstage valve is the two-position three way hydraulic operated valve with large area end R and small area end J, described linkage
The A mouth of valve and P mouth concatenation are arranged in the control loop of main control valve, the B mouth of described interstage valve and the oil exit pipe phase of hydraulic power source
Even.
This utility model is had the advantage that based on the hydrogovernor emergency stop device tool of dual-coil electromagnetic valve and interstage valve：
This utility model includes the first electromagnetic valve, the second electromagnetic valve, interstage valve and main control valve, the first electromagnetic valve, second
Electromagnetic valve is connected in series to form twin coil controlling brancher, and interstage valve is the hydraulic operated valve with large area end R and small area end J, connection
The large area end R of dynamic valve is connected with hydraulic power source by double control branch road, the principal pressure oil of the small area end J of interstage valve and hydraulic power source
Pipe is connected, and main control valve arranged in series between the servomotor of hydraulic power source and hydrogovernor stator, arrange by interstage valve concatenation
In the control loop of main control valve, twin coil controlling brancher is connected in series to form by the first electromagnetic valve, the second electromagnetic valve, leads to
Cross twin coil controlling brancher to control interstage valve, control main control valve by interstage valve, only in the first electromagnetic valve, the second electricity
Magnet valve triggers simultaneously or occurs just to trigger emergency shutdown during coil fusing simultaneously, because the first electromagnetic valve, the second electromagnetic valve are same
The probability of Shi Fasheng coil fusing is extremely low, and therefore, it is possible to prevent in the first electromagnetic valve, the second electromagnetic valve, any one breaks down
And lead to hydrogovernor emergency shutdown, it can be avoided that single solenoid valve body fault causes speed regulator misoperation promptly to stop
Machine, improve the reliability of emergency stop device, have the advantages that structure is simple, security reliability is high.
Brief description
Fig. 1 is the hydraulic principle structural representation of this utility model embodiment.
Marginal data：1st, the first electromagnetic valve；2nd, the second electromagnetic valve；3rd, interstage valve；4th, main control valve；41st, hydraulic feedback machine
Structure；42nd, device in runback；43rd, manual/auto switching valve；44th, proportional servo valve；45th, twin filter.
Specific embodiment
As a example hereafter being transformed by the main control valve 4 of Hongjiang hydroelectric power plant hydrogovernor, referring to Fig. 1, master joins
Between the servomotor of hydraulic power source and hydrogovernor stator, main control valve 4 is that the existing hydraulic turbine is adjusted to pressure valve 4 arranged in series
The servomotor control valve of fast device stator, A mouth and the servomotor of main control valve 4 begin to speak to be connected, B mouth and servomotor close chamber phase, T mouth and
The oil exit pipe of hydraulic power source is connected, P mouth is connected with the principal pressure oil pipe of hydraulic power source, and main control valve 4 is provided with hydraulic feedback mechanism 41
With device 42 in runback, the control loop of main control valve 4 is respectively equipped with manual/auto switching valve 43, proportional servo valve 44 and
Twin filter 45, hydraulic feedback mechanism 41 is connected with device in runback 42, the T mouth of hydraulic feedback mechanism 41 and the oil extraction of hydraulic power source
Pipe is connected, P mouth is connected with the principal pressure oil pipe of hydraulic power source, A mouth is connected with the A mouth of manual/auto switching valve 43, manual/auto
The B mouth of switching valve 43 is connected with the A mouth of proportional servo valve 44, P mouth is connected with the control end of main control valve 4, proportional servo valve 44
T mouth be connected with the oil exit pipe of hydraulic power source, P mouth is connected with the principal pressure oil pipe of hydraulic power source by twin filter 45.Hereafter will be with
Access this utility model between the P mouth of manual/auto switching valve 43, the control end of main control valve 4 and be based on dual-coil electromagnetic valve and linkage
As a example the hydrogovernor emergency stop device of valve, to the water turbine governing based on dual-coil electromagnetic valve and interstage valve for this utility model
Device emergency stop device is further elaborated.
As shown in figure 1, the present embodiment is included based on the hydrogovernor emergency stop device of dual-coil electromagnetic valve and interstage valve
First electromagnetic valve 1, the second electromagnetic valve 2, interstage valve 3 and main control valve 4, the first electromagnetic valve 1, the second electromagnetic valve 2 are connected in series shape
Become twin coil controlling brancher, interstage valve 3 is the hydraulic operated valve with large area end R and small area end J, the large area end R of interstage valve 3
It is connected with hydraulic power source by double control branch road, the small area end J of interstage valve 3 is connected with the principal pressure oil pipe of hydraulic power source, master joins pressure
Between the servomotor of hydraulic power source and the stator of hydrogovernor, interstage valve 3 concatenation is arranged in main control valve to valve 4 arranged in series
In 4 control loop.Twin coil controlling brancher is connected in series to form by the first electromagnetic valve 1, the second electromagnetic valve 2, by two-wire
Circle controlling brancher, to control interstage valve 3, controls main control valve 4, only in the first electromagnetic valve 1, the second electromagnetism by interstage valve 3
Valve 2 triggers simultaneously or occurs just to trigger emergency shutdown during coil fusing simultaneously, because the first electromagnetic valve 1, the second electromagnetic valve 2 are same
The probability of Shi Fasheng coil fusing is extremely low, and therefore, it is possible to prevent in the first electromagnetic valve 1, the second electromagnetic valve 2, any one occurs event
Hinder and lead to hydrogovernor emergency shutdown, it can be avoided that single solenoid valve body fault causes speed regulator misoperation promptly to stop
Machine, improve the reliability of emergency stop device, have the advantages that structure is simple, security reliability is high.
In the present embodiment, the first electromagnetic valve 1, the second electromagnetic valve 2 are two-position three way unicoil solenoid directional control valve, the first electricity
The A mouth of magnet valve 1 is connected with the oil exit pipe of hydraulic power source, B mouth is connected with the principal pressure oil pipe of hydraulic power source, P mouth and the second electromagnetic valve 2
B mouth is connected, and the A mouth of the second electromagnetic valve 2 is connected with the oil exit pipe of hydraulic power source, P mouth is connected with the large area end R of interstage valve 3.This
Outward, in order to ensure, in the protection of turbine-generator units and control loop loss of voltage, to enable related protection and control device
Auto-action closes machine set water guiding mechanism, and the first electromagnetic valve 1, the second electromagnetic valve 2 adopt single-coil electromagnetic valve.In the present embodiment,
First electromagnetic valve 1, the second electromagnetic valve 2 specifically adopt 3WE6A6XEG220N9K4 type solenoid directional control valve, and interstage valve 3 specifically adopts
NSD type hydraulic operated valve.
In the present embodiment, interstage valve 3 is the two-position three way hydraulic operated valve with large area end R and small area end J, interstage valve 3
A mouth and P mouth concatenation be arranged in the control loop of main control valve 4, the B mouth of interstage valve 3 is connected with the oil exit pipe of hydraulic power source.
The present embodiment is as follows with the operation principle of the hydrogovernor emergency stop device of interstage valve based on dual-coil electromagnetic valve：
In hydrogovernor emergency stop device action, the first electromagnetic valve 1, the second electromagnetic valve 2 dead electricity simultaneously, the second electromagnetic valve 2
P mouth and the first electromagnetic valve 1 P mouth UNICOM, the P mouth of the first electromagnetic valve 1 connected with principal pressure oil pipe again, and therefore principal pressure oil is straight
Meet the large area end R, the large area end R of interstage valve 3 that the P mouth through the first electromagnetic valve 1, the second electromagnetic valve 2 is connected to interstage valve 3
Pressure is more than interstage valve small area end J pressure, and interstage valve 3 valve element pushes small area end J to, and now the P mouth oil of large area end R is connected
Oil extraction, causes the upper end of main control valve 4 to lose oil pressure, the P mouth principal pressure oil of main control valve 4 connects the B mouth of servomotor, servomotor
The servomotor of B mouth and stator close chamber and be connected, direct guide vane closing, cut-out hydraulic turbine current, realize emergency shutdown.Unit is normal
During operation, the first electromagnetic valve 1 and the second electromagnetic valve 2 are in electriferous state, and such as the first electromagnetic valve 1 and the second electromagnetic valve 2 are any
One is broken down, and does not result in emergency shutdown, improves the security reliability of emergency stop device.
Hongjiang hydroelectric power plant hydrogovernor emergency shutdown loop, after technological transformation, makes speed regulator emergency stop device
Reliability greatly improve, for this factory realize remote control run built good basis.Practical operation situation from power plant
As can be seen that the successful Application after this emergency stop device technological transformation, can solve the problem that same type hydrogovernor promptly stops
The low problem of machine equipment safety coefficient, has positive promotional value.
It should be noted that the present embodiment is only to carry out to existing main control valve 4 counting transformation increase promptly
The exemplary illustration carrying out as a example stopping function, device 42, manual/auto switching valve 43, ratio in hydraulic feedback mechanism 41, runback
Example servo valve 44 and twin filter 45 are and increase the unrelated structure member of emergency stop function, therefore hydraulic feedback mechanism 41,
In runback, the concrete structure of device 42, manual/auto switching valve 43, proportional servo valve 44 and twin filter 45 is not all in this enforcement
Within the limit of consideration of example.Certainly, as long as the main control valve 4 adopting in the present embodiment is capable of the servomotor to stator
Hydraulic oil oil-feeding control, it is not limited to the concrete form in the present embodiment.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonging under this utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, some improvement under the premise of without departing from this utility model principle and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (3)
1. a kind of hydrogovernor emergency stop device based on dual-coil electromagnetic valve and interstage valve it is characterised in that：Including first
Electromagnetic valve（1）, the second electromagnetic valve（2）, interstage valve（3）And main control valve（4）, described first electromagnetic valve（1）, the second electromagnetic valve
（2）It is connected in series to form twin coil controlling brancher, described interstage valve（3）It is surging with large area end R and small area end J
Valve, described interstage valve（3）Large area end R be connected with hydraulic power source by double control branch road, described interstage valve（3）Small area end
J is connected with the principal pressure oil pipe of hydraulic power source, described main control valve（4）Arranged in series is in the stator of hydraulic power source and hydrogovernor
Servomotor between, described interstage valve（3）Concatenation is arranged in main control valve（4）Control loop on.
2. the hydrogovernor emergency stop device based on dual-coil electromagnetic valve and interstage valve according to claim 1, it is special
Levy and be：Described first electromagnetic valve（1）, the second electromagnetic valve（2）It is two-position three way unicoil solenoid directional control valve, described first electricity
Magnet valve（1）A mouth be connected with the oil exit pipe of hydraulic power source, B mouth is connected with the principal pressure oil pipe of hydraulic power source, P mouth and the second electromagnetic valve
（2）B mouth be connected, described second electromagnetic valve（2）A mouth be connected with the oil exit pipe of hydraulic power source, P mouth and interstage valve（3）Big face
Long-pending end R is connected.
3. the hydrogovernor emergency stop device based on dual-coil electromagnetic valve and interstage valve according to claim 2, it is special
Levy and be：Described interstage valve（3）It is the two-position three way hydraulic operated valve with large area end R and small area end J, described interstage valve（3）
A mouth and P mouth concatenation be arranged in main control valve（4）Control loop on, described interstage valve（3）B mouth and hydraulic power source oil extraction
Pipe is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620842207.8U CN205936957U (en) | 2016-08-05 | 2016-08-05 | Governor of hydraulic turbine emergency shut down device based on double magnet valve and interstage valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620842207.8U CN205936957U (en) | 2016-08-05 | 2016-08-05 | Governor of hydraulic turbine emergency shut down device based on double magnet valve and interstage valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936957U true CN205936957U (en) | 2017-02-08 |
Family
ID=57921675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620842207.8U Expired - Fee Related CN205936957U (en) | 2016-08-05 | 2016-08-05 | Governor of hydraulic turbine emergency shut down device based on double magnet valve and interstage valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205936957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080934A (en) * | 2019-06-04 | 2019-08-02 | 东方电气自动控制工程有限公司 | Hydrogovernor with start and stop defencive function |
-
2016
- 2016-08-05 CN CN201620842207.8U patent/CN205936957U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080934A (en) * | 2019-06-04 | 2019-08-02 | 东方电气自动控制工程有限公司 | Hydrogovernor with start and stop defencive function |
| CN110080934B (en) * | 2019-06-04 | 2024-04-12 | 东方电气自动控制工程有限公司 | Water turbine speed regulator with start-stop protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20180805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |