CN203420963U - Hydraulic control device of septum valve - Google Patents
Hydraulic control device of septum valve Download PDFInfo
- Publication number
- CN203420963U CN203420963U CN201320509682.XU CN201320509682U CN203420963U CN 203420963 U CN203420963 U CN 203420963U CN 201320509682 U CN201320509682 U CN 201320509682U CN 203420963 U CN203420963 U CN 203420963U
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- valve
- oil cylinder
- servovalve
- oil
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Abstract
The utility model provides a hydraulic control device of a septum valve, and relates to the technical field of valves. The hydraulic control device achieves the technical purpose of improving control accuracy. The hydraulic control device comprises a servo valve, a quick-closing electromagnetic valve, an execution oil cylinder, a system oil supply opening and a system oil return opening. The execution oil cylinder is provided with a displacement sensor, and a piston rod of the execution oil cylinder is connected to an openness execution mechanism of the septum valve. A pressure oil opening of the servo valve is connected to the system oil supply opening, and an oil return opening of the servo valve is connected to the system oil return opening. Two work oil openings of the servo vale are connected with two work cavities of the execution oil cylinder respectively. A pressure oil opening of the quick-closing electromagnetic valve is connected to the system oil supply opening, and an oil return opening of the quick-closing electromagnetic valve is connected to the system oil return opening. Two work oil openings of the quick-closing electromagnetic valve are connected to the two work cavities of the execution oil cylinder respectively. The hydraulic control device is suitable for openness control of the septum valve of a turbine.
Description
Technical field
The utility model relates to valve technology, particularly relates to a kind of technology of hydraulic control device of septum valve.
Background technique
Adopt steam turbine very extensive as the generator set application of power source.The valve of existing steam turbine all adopts group valve to carry the board-like leverage of borrowing to be connected with the oil engine of speed regulator, adopt secondary to amplify all-hydraulic mode and realize steam turbine valve adjusting, regulator doubles as tacho-pulse signal by the main oil pump being connected with front-end of spindle axle sleeve, through-flow pressure transducer is made the first order and is amplified, the cutout formula pilot valve of usining is controlled oil engine as amplifying for the second time, by the feedback window of oil engine, carries out hydraulic feedback.
The all-hydraulic control mode of existing steam turbine valve, exists continuous operating time long, and the low defect of control accuracy, can affect the security of operation of steam turbine, is difficult to guarantee the stability of generator set.
Model utility content
For the defect existing in above-mentioned prior art, it is short that technical problem to be solved in the utility model is to provide a kind of continuous operating time, the hydraulic control device of the septum valve that control accuracy is high.
In order to solve the problems of the technologies described above, the hydraulic control device of a kind of septum valve provided by the utility model, the septum valve that relates to steam turbine, described septum valve is provided with for regulating the aperture actuator of aperture, it is characterized in that: this device comprises servovalve, quick closing valve solenoid valve, carries out oil cylinder, and is provided with system oil-feed port, system oil return mouth;
Described execution oil cylinder is the two-way cylinder of a single-piston rod bilateral oil-feed, carries out on oil cylinder the displacement transducer for detection of its piston rod displacement is housed, and the piston rod of carrying out oil cylinder is connected to the aperture actuator of septum valve through a connecting rod;
Described servovalve is a 3-position 4-way servovalve, servovalve has a pressure hydraulic fluid port, a return opening and two actuator ports, the pressure hydraulic fluid port of servovalve is received system oil-feed port, servovalve return opening through a return check valve, receive system oil return mouth, an actuator port of servovalve is received the rod chamber of carrying out oil cylinder, and another actuator port of servovalve is received the rodless cavity of carrying out oil cylinder;
Described quick closing valve solenoid valve is a three position four-way electromagnetic valve, quick closing valve solenoid valve has a pressure hydraulic fluid port, a return opening and two actuator ports, the pressure hydraulic fluid port of quick closing valve solenoid valve is received system oil-feed port, the return opening of quick closing valve solenoid valve is received system oil return mouth, an actuator port of quick closing valve solenoid valve is received the rod chamber of carrying out oil cylinder, and another actuator port of quick closing valve solenoid valve is received the rodless cavity of carrying out oil cylinder.
The hydraulic control device of the septum valve that the utility model provides, utilize servo valve control to carry out oil cylinder operation, and adjust in real time servosignal by the feedback signal of displacement transducer, can accurately control the aperture of turbine high-pressure modulating valve, by quick closing valve solenoid valve, can also control that turbine high-pressure modulating valve is opened fast, quick closedown, there is continuous operating time short, the feature that control accuracy is high, can improve the security of operation of steam turbine, improve the stability of generator set.
Accompanying drawing explanation
Fig. 1 is the plan view of hydraulic control device of the utility model embodiment's septum valve;
Fig. 2 is the right elevation after the hydraulic control device of the utility model embodiment's septum valve dissects along the A-A line in Fig. 1;
Fig. 3 is the hydraulic diagram of hydraulic control device of the utility model embodiment's septum valve.
Embodiment
Below in conjunction with accompanying drawing explanation, embodiment of the present utility model is described in further detail, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof, all should list protection domain of the present utility model in.
As shown in Figure 1-Figure 3, the hydraulic control device of a kind of septum valve that the utility model embodiment provides, the septum valve that relates to steam turbine, described septum valve is provided with for regulating the aperture actuator (not shown) of aperture, it is characterized in that: this device comprises servovalve H1, quick closing valve solenoid valve H2, carries out oil cylinder U1, and is provided with system oil-feed port P1, system oil return mouth T1;
Described execution oil cylinder U1 is the two-way cylinder of a single-piston rod bilateral oil-feed, carries out on oil cylinder U1 the displacement transducer L1 for detection of its piston rod displacement is housed, and the piston rod of carrying out oil cylinder U1 is connected to the aperture actuator of septum valve through a connecting rod X1;
Described servovalve H1 is a 3-position 4-way servovalve, servovalve H1 has a pressure hydraulic fluid port, a return opening and two actuator ports, the pressure hydraulic fluid port of servovalve H1 is received system oil-feed port P1, servovalve H1 return opening through a return check valve H3, receive system oil return mouth T1, an actuator port of servovalve H1 is received the rod chamber of carrying out oil cylinder U1, and another actuator port of servovalve H1 is received the rodless cavity of carrying out oil cylinder U1;
Described quick closing valve solenoid valve H2 is a three position four-way electromagnetic valve, quick closing valve solenoid valve H2 has a pressure hydraulic fluid port, a return opening and two actuator ports, the pressure hydraulic fluid port of quick closing valve solenoid valve H2 is received system oil-feed port P1, the return opening of quick closing valve solenoid valve H2 is received system oil return mouth T1, an actuator port of quick closing valve solenoid valve H2 is received the rod chamber of carrying out oil cylinder U1, and another actuator port of quick closing valve solenoid valve H2 is received the rodless cavity of carrying out oil cylinder U1.
The utility model embodiment's working principle is as follows:
The system oil-feed port P1 of hydraulic control device is received to external high pressure oil sources, system oil return mouth T1 is received to outside oil returning tube;
In the time of need to regulating the aperture of turbine high-pressure modulating valve, according to the feedback signal of displacement transducer L1, to servovalve H1, input corresponding valve position difference servosignal, servovalve H1 sends into high pressure oil according to valve position difference servosignal rod chamber or the rodless cavity of carrying out oil cylinder U1, make the piston rod of carrying out oil cylinder U1 retract or stretch out, and then drive the aperture actuator of septum valve to carry out corresponding actions, in adjustment process, according to the feedback signal of displacement transducer L1, constantly adjust the valve position difference servosignal that is input to servovalve H1, until the feedback signal of displacement transducer L1 reaches desirable value, thereby realize the regulation of turbine high-pressure modulating valve,
When servovalve H1 loses the job signal (while there is no the input of valve position difference servosignal), because servovalve is provided with mechanical bias, on the home that turbine high-pressure modulating valve can be parked in;
While needing turbine high-pressure modulating valve to open fast, quick closing valve solenoid valve H2 obtains electric, now high pressure oil enters the rod chamber of carrying out oil cylinder U1 fast, make to carry out the piston rod fast retractile of oil cylinder, and then drive the aperture actuator of septum valve to carry out corresponding actions, turbine high-pressure modulating valve is opened fast;
While needing the quick closedown of turbine high-pressure modulating valve, quick closing valve solenoid valve H2 dead electricity, now high pressure oil enters the rodless cavity of carrying out oil cylinder U1 fast, the piston rod of carrying out oil cylinder is stretched out fast, and then drive the aperture actuator of septum valve to carry out corresponding actions, make the quick closedown of turbine high-pressure modulating valve.
Claims (1)
1. the hydraulic control device of a septum valve, the septum valve that relates to steam turbine, described septum valve is provided with for regulating the aperture actuator of aperture, it is characterized in that: this device comprises servovalve, quick closing valve solenoid valve, carries out oil cylinder, and is provided with system oil-feed port, system oil return mouth;
Described execution oil cylinder is the two-way cylinder of a single-piston rod bilateral oil-feed, carries out on oil cylinder the displacement transducer for detection of its piston rod displacement is housed, and the piston rod of carrying out oil cylinder is connected to the aperture actuator of septum valve through a connecting rod;
Described servovalve is a 3-position 4-way servovalve, servovalve has a pressure hydraulic fluid port, a return opening and two actuator ports, the pressure hydraulic fluid port of servovalve is received system oil-feed port, servovalve return opening through a return check valve, receive system oil return mouth, an actuator port of servovalve is received the rod chamber of carrying out oil cylinder, and another actuator port of servovalve is received the rodless cavity of carrying out oil cylinder;
Described quick closing valve solenoid valve is a three position four-way electromagnetic valve, quick closing valve solenoid valve has a pressure hydraulic fluid port, a return opening and two actuator ports, the pressure hydraulic fluid port of quick closing valve solenoid valve is received system oil-feed port, the return opening of quick closing valve solenoid valve is received system oil return mouth, an actuator port of quick closing valve solenoid valve is received the rod chamber of carrying out oil cylinder, and another actuator port of quick closing valve solenoid valve is received the rodless cavity of carrying out oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320509682.XU CN203420963U (en) | 2013-08-21 | 2013-08-21 | Hydraulic control device of septum valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320509682.XU CN203420963U (en) | 2013-08-21 | 2013-08-21 | Hydraulic control device of septum valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420963U true CN203420963U (en) | 2014-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320509682.XU Expired - Fee Related CN203420963U (en) | 2013-08-21 | 2013-08-21 | Hydraulic control device of septum valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438040A (en) * | 2013-08-21 | 2013-12-11 | 上海汇益控制系统股份有限公司 | Hydraulic control device of high-pressure regulating valve |
-
2013
- 2013-08-21 CN CN201320509682.XU patent/CN203420963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438040A (en) * | 2013-08-21 | 2013-12-11 | 上海汇益控制系统股份有限公司 | Hydraulic control device of high-pressure regulating valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20180821 |