CN214464647U - Power-down self-resetting self-closing switching device of speed regulator with position locking device - Google Patents
Power-down self-resetting self-closing switching device of speed regulator with position locking device Download PDFInfo
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- CN214464647U CN214464647U CN202120397654.8U CN202120397654U CN214464647U CN 214464647 U CN214464647 U CN 214464647U CN 202120397654 U CN202120397654 U CN 202120397654U CN 214464647 U CN214464647 U CN 214464647U
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Abstract
A power-down self-resetting self-closing switching device of a speed regulator with a position locking device is characterized in that an open cavity oil circuit, a closed cavity oil circuit, an oil return pipe and a pressure oil pipe are connected with a main pressure distribution valve, a repeated closing switching electromagnetic valve, a false stop electromagnetic valve and an emergency stop electromagnetic valve are connected in series in an oil return loop, an oil source pipeline is connected with the main pressure distribution valve and the emergency stop electromagnetic valve, the oil circuit switching electromagnetic valve is connected in series in a B control oil circuit, the B control oil circuit is connected with the repeated closing switching electromagnetic valve, the A control oil circuit is connected with the oil circuit switching electromagnetic valve, and the repeated closing switching electromagnetic valve and the false stop electromagnetic valve are connected with a locking device. The utility model overcomes it is long to consume time when former hydroelectric set speed regulator control system mode switches, and the unit need be in long-time shutdown state's problem, has simple structure, realizes speed regulator system self-closing and from the switching of mode in restoring, and safe and reliable uses manpower sparingly reduce cost, avoids not having the characteristics that the electricity down arouses the shutdown failure.
Description
Technical Field
The utility model belongs to the technical field of hydraulic generator control, a take position lock spindle device speed regulator to fall the electricity from closing auto-change over device in restoring.
Background
Along with the development of scientific technology, the automation degree of a speed regulator control system of a water turbine generator set is higher and higher, along with the increase of unit capacity of the set and the requirement of social stability development, the requirement of a power grid on the safety and stability of the set is higher and higher, if the speed regulator is started and stopped immediately after the speed regulator loses power according to a traditional mode, the stability of the power grid is affected, and especially when the installed capacity is large, the unit capacity is large and a local power grid is accessed, if a power-loss self-closing mode of the speed regulator system is selected, the power grid is greatly affected. Therefore, it is necessary to consider that according to different unit equipment and operation conditions, sometimes the unit speed governor system needs to be set to a power-down self-resetting mode to keep the current operation state of the unit, and sometimes the unit speed governor system needs to be set to a power-down self-closing mode to stop the unit in time after the power of the speed governor system is lost.
The traditional speed regulator system is usually only designed with one working mode, namely the speed regulator is powered down and automatically restores or is automatically closed, if the working mode needs to be changed, the speed regulator system needs to be modified, the time consumption is long, the modification difficulty is high, the unit equipment needs to be placed in a halt state for a long time, and the economic efficiency loss is high.
In summary, it is necessary to design a self-closing and self-closing switching device for a speed regulator with a position locking device when power failure occurs, which can simply complete the switching between the self-closing and self-centering modes of the speed regulator system through the locking and unlocking spindles, and is convenient and safe, labor-saving, time-saving, simple in system, less in shutdown probability caused by power failure by mistake and the like, and high in reliability.
Disclosure of Invention
The utility model aims to solve the technical problem that a take position lock spindle device speed regulator to fall electricity from closing auto-change over device in restoring is provided, moreover, the steam generator is simple in structure, adopt the open chamber oil circuit, close the chamber oil circuit, it is connected with main distributing valve to return oil pipe and pressure oil pipe, close the switching solenoid valve in the time of recovering, mistake stop solenoid valve and emergency stop solenoid valve are established ties in the return oil circuit, oil source pipeline and main distributing valve and emergency stop solenoid valve are connected, oil circuit switching solenoid valve establishes ties in B control oil circuit, B control oil circuit closes the switching solenoid valve with the time of recovering and is connected, A control oil circuit switches the solenoid valve with the oil circuit and is connected, close switching solenoid valve and mistake stop solenoid valve in the time of recovering and be connected with locking device, realize speed regulator system self-closing and from the switching of mode in the time of recovering, safety and reliability, the reduction cost of using manpower sparingly, avoid having no electricity to arouse the shut down trouble.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a power-down self-resetting self-closing switching device of a speed regulator with a position locking device comprises an open cavity oil way, a closed cavity oil way, a main pressure distributing valve, an oil return pipe, a pressure oil pipe, an A control oil way, a B control oil way, an oil way switching solenoid valve, a center-resetting switching solenoid valve, an error stopping solenoid valve, an oil return loop, a locking device, an emergency stopping solenoid valve and an oil source pipeline; the open cavity oil way, the closed cavity oil way, the oil return pipe and the pressure oil pipe are connected with the main pressure distribution valve; the middle-time closing switching electromagnetic valve, the error stopping electromagnetic valve and the emergency stopping electromagnetic valve are connected in series in the oil return loop; the oil source pipeline is connected with the main pressure distribution valve and the emergency stop electromagnetic valve; the oil circuit switching electromagnetic valve is connected in series in the B control oil circuit; the control oil way B is connected with a middle closing switching electromagnetic valve; the control oil way is connected with an oil way switching electromagnetic valve; the middle closing switching electromagnetic valve and the error stopping electromagnetic valve are connected with a locking device.
The emergency stop electromagnetic valve is a two-position four-way double electromagnetic valve with position nodes and position keeping; the double-center closing switching electromagnetic valve between the oil circuit switching electromagnetic valve and the emergency stop electromagnetic valve realizes the switching between the self-center closing mode and the self-closing mode; the emergency stop electromagnetic valve realizes the emergency stop of the unit in emergency.
The middle closing switching solenoid valve and the error stopping solenoid valve are two-position four-way single solenoid valves with position nodes and locking devices, and double-node control is realized when a self-closing mode is formed in an oil return loop; when the electromagnetic valve of the error shutdown is closed automatically, the error shutdown of the system caused by the error power failure of the switching electromagnetic valve of the repeated closing is prevented.
The open cavity oil circuit is connected with the open cavity of the servomotor of the unit water guide mechanism to form an open cavity loop, the closed cavity oil circuit is connected with the closed cavity of the servomotor of the unit water guide mechanism to form a closed cavity loop, and the open cavity loop and the closed cavity loop respectively control the unit to be opened and closed.
The oil return pipe and the pressure oil pipe are connected with the main pressure distributing valve to form a normal pressure cavity.
The oil source pipeline on the upper part of the main pressure distribution valve drives the main pressure distribution valve to move up and down, and controls the open cavity oil way and the closed cavity oil way to conduct pressure oil, return oil or block the oil way, so that the unit is controlled to be opened, closed or kept in the current state.
The oil circuit switching electromagnetic valve determines to switch the control oil circuit A or the control oil circuit B through a working position so as to control the speed regulator of the unit.
The locking device locks the working positions of the switching solenoid valve for closing in a resetting way and the solenoid valve for stopping by mistake on the right side, and when the locking device is locked and put into use, the system is in a power-off self-resetting mode; when the locking device is withdrawn from the lock, the system is in a self-closing mode.
The middle closing switching electromagnetic valve, the error stopping electromagnetic valve and the emergency stopping electromagnetic valve are all connected to the oil return tank through oil return loops; the oil circuit switching solenoid valve, the middle-time closing switching solenoid valve, the error stopping solenoid valve and the emergency stopping solenoid valve are respectively provided with nodes to monitor the control position of the solenoid valve.
A power-down self-resetting self-closing switching device of a speed regulator with a position locking device is characterized in that an open cavity oil circuit, a closed cavity oil circuit, an oil return pipe and a pressure oil pipe are connected with a main pressure distribution valve, a repeated closing switching electromagnetic valve, a false stop electromagnetic valve and an emergency stop electromagnetic valve are connected in series in an oil return loop, an oil source pipeline is connected with the main pressure distribution valve and the emergency stop electromagnetic valve, the oil circuit switching electromagnetic valve is connected in series in a B control oil circuit, the B control oil circuit is connected with the repeated closing switching electromagnetic valve, the A control oil circuit is connected with the oil circuit switching electromagnetic valve, and the repeated closing switching electromagnetic valve and the false stop electromagnetic valve are connected with a locking device. The utility model overcomes it is long to consume time when former hydroelectric set speed regulator control system mode switches, and the unit need be in long-time shutdown state's problem, has simple structure, realizes speed regulator system self-closing and from the switching of mode in restoring, and safe and reliable uses manpower sparingly reduce cost, avoids not having the characteristics that the electricity down arouses the shutdown failure.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the system comprises an open cavity oil circuit 1, a closed cavity oil circuit 2, a main pressure distributing valve 3, an oil return pipe 4, a pressure oil pipe 5, an A control oil circuit 6, a B control oil circuit 7, an oil circuit switching solenoid valve 8, a center-resetting switching solenoid valve 9, an error stopping solenoid valve 10, an oil return loop 11, a locking device 12, an emergency stopping solenoid valve 13 and an oil source pipeline 14.
Detailed Description
As shown in fig. 1, a power-down self-resetting self-closing switching device of a speed regulator with a position locking device comprises an open cavity oil way 1, a closed cavity oil way 2, a main pressure distributing valve 3, an oil return pipe 4, a pressure oil pipe 5, an A control oil way 6, a B control oil way 7, an oil way switching solenoid valve 8, a center-resetting switching solenoid valve 9, an error stop solenoid valve 10, an oil return loop 11, a locking device 12, an emergency stop solenoid valve 13 and an oil source pipeline 14; the open cavity oil way 1, the closed cavity oil way 2, the oil return pipe 4 and the pressure oil pipe 5 are connected with a main pressure distribution valve 3; the middle-time closing switching electromagnetic valve 9, the error stopping electromagnetic valve 10 and the emergency stopping electromagnetic valve 13 are connected in series in the oil return loop 11; the oil source pipeline 14 is connected with the main pressure distribution valve 3 and the emergency stop electromagnetic valve 13; the oil circuit switching electromagnetic valve 8 is connected in series in the B control oil circuit 7; the control oil circuit B7 is connected with a middle closing switching electromagnetic valve 9; the control oil circuit A6 is connected with an oil circuit switching electromagnetic valve 8; the switching solenoid valve 9 and the erroneous stop solenoid valve 10 are connected to a lock device 12. The system has the advantages of simple structure, realization of integral self-resetting of the system in a power-off self-resetting mode, realization of integral self-closing function of the system in a power-off self-closing mode, switching of self-closing and self-resetting modes of the speed regulator system, safety and reliability, labor saving, cost reduction, and avoidance of shutdown faults caused by power failure.
In the preferred technical scheme, the emergency stop electromagnetic valve 13 is a two-position four-way dual electromagnetic valve with position nodes and position keeping; the double-center closing switching electromagnetic valve 9 between the oil circuit switching electromagnetic valve 8 and the emergency stop electromagnetic valve 13 realizes the switching between the self-center closing mode and the self-closing mode; the emergency stop electromagnetic valve 13 realizes the emergency stop of the unit in case of emergency. Switching between the self-centering mode and the self-closing mode is realized by closing the switching electromagnetic valve 9 in the centering mode, and when an emergency situation occurs, the emergency stop electromagnetic valve 13 starts the unit to perform emergency stop, so that the operation safety of the unit is protected.
In a preferred technical scheme, the middle-time closing switching solenoid valve 9 and the error stopping solenoid valve 10 are two-position four-way single solenoid valves with position nodes and locking devices, and double-node control is formed in an oil return loop 11 in a self-closing mode; when the electromagnetic valve 10 of the false shutdown is closed automatically, the false shutdown of the system caused by the false power failure of the switching electromagnetic valve 9 of the repeated closing is prevented. The double-node control when the two-position four-way single electromagnetic valve with the position node and the locking device forms a self-closing mode in the oil return loop 11 is adopted, so that when the electromagnetic valve 10 of the error stop machine is automatically closed, the error stop of the system caused by power failure of the switching electromagnetic valve 9 which is closed again is effectively avoided, and the failure rate of unit operation is reduced.
In the preferred technical scheme, the open cavity oil circuit 1 is connected with the open cavity of the servomotor of the unit water guide mechanism to form an open cavity loop, the closed cavity oil circuit 2 is connected with the closed cavity of the servomotor of the unit water guide mechanism to form a closed cavity loop, and the open cavity loop and the closed cavity loop respectively control the unit to be opened and closed. The cavity opening loop and the cavity closing loop are connected with the servomotor of the water guide mechanism of the unit and used for controlling the unit to be opened and closed, and the operation is simple.
In the preferred technical scheme, the oil return pipe 4 and the pressure oil pipe 5 are connected with the main pressure distribution valve 3 to form a normal pressure cavity. The normal pressure cavity formed by the oil return pipe 4 and the pressure oil pipe 5 connected with the main pressure distribution valve 3 is beneficial to controlling the main pressure distribution valve 3 to move up and down through an oil source pipeline 14 on the upper part of the main pressure distribution valve 3.
In the preferred technical scheme, an oil source pipeline 14 on the upper part of the main pressure distribution valve 3 drives the main pressure distribution valve 3 to move up and down, and controls the open cavity oil way 1 and the closed cavity oil way 2 to conduct pressure oil, return oil or block the oil ways, so that the unit is controlled to be opened, closed or kept in the current state. And the open cavity oil circuit 1 and the closed cavity oil circuit 2 connected with the main pressure distributing valve 3 are used for conducting pressure oil, returning oil or plugging oil circuits to realize the control of the unit.
In the preferred technical scheme, the control oil circuit A6 and the control oil circuit B7 both control the action of the main pressure distribution valve 3, and the oil circuit switching electromagnetic valve 8 determines to switch the control oil circuit A6 or the control oil circuit B7 through the working position to control the speed regulator of the unit. The control oil circuit A6 and the control oil circuit B7 are used for switching a self-reset and self-closing mode, so that a unit speed regulator is controlled, the switching time is short, and the unit does not need to be stopped for a long time.
In the preferred technical scheme, the locking device 12 locks the working positions of the reset closing switching electromagnetic valve 9 and the error stopping electromagnetic valve 10 on the right side, and when the locking is put into operation, the system is in a power-off self-reset mode; when the locking device 12 is withdrawn from lock, the system is in a self-closing mode. The locking position is limited by arranging a locking device 12 in the switching solenoid valve 9 which is closed in the reset and the solenoid valve 10 which is stopped by mistake, and the system is in the self-reset and self-closing mode through locking input and locking withdrawal.
In the preferred technical scheme, the middle-time closing switching electromagnetic valve 9, the error stopping electromagnetic valve 10 and the emergency stopping electromagnetic valve 13 are all connected to an oil return tank through an oil return loop 11; the oil path switching solenoid valve 8, the middle-time closing switching solenoid valve 9, the error stop solenoid valve 10 and the emergency stop solenoid valve 13 are respectively provided with nodes to monitor the control position of the solenoid valves. And each electromagnetic valve in the oil return loop 11 is provided with a node, and the control position of the electromagnetic valve is monitored, so that the running reliability is further improved.
The self-closing switching device with the position locking device for the speed regulator during power failure self-resetting is safe and reliable, saves manpower, reduces cost and avoids shutdown faults caused by power failure.
Switching between the self-centering mode and the self-closing mode is realized by closing the switching electromagnetic valve 9 in the centering mode, and when an emergency situation occurs, the emergency stop electromagnetic valve 13 starts the unit to perform emergency stop, so that the operation safety of the unit is protected.
The double-node control when the two-position four-way single electromagnetic valve with the position node and the locking device forms a self-closing mode in the oil return loop 11 is adopted, so that when the electromagnetic valve 10 of the error stop machine is automatically closed, the error stop of the system caused by power failure of the switching electromagnetic valve 9 which is closed again is effectively avoided, and the failure rate of unit operation is reduced.
The cavity opening loop and the cavity closing loop are connected with the servomotor of the water guide mechanism of the unit and used for controlling the unit to be opened and closed, and the operation is simple.
The normal pressure cavity formed by the oil return pipe 4 and the pressure oil pipe 5 connected with the main pressure distribution valve 3 is beneficial to controlling the main pressure distribution valve 3 to move up and down through an oil source pipeline 14 on the upper part of the main pressure distribution valve 3.
And the open cavity oil circuit 1 and the closed cavity oil circuit 2 connected with the main pressure distributing valve 3 are used for conducting pressure oil, returning oil or plugging oil circuits to realize the control of the unit.
The control oil circuit A6 and the control oil circuit B7 are used for switching a self-reset and self-closing mode, so that a unit speed regulator is controlled, the switching time is short, and the unit does not need to be stopped for a long time.
The locking position is limited by arranging a locking device 12 in the switching solenoid valve 9 which is closed in the reset and the solenoid valve 10 which is stopped by mistake, and the system is in the self-reset and self-closing mode through locking input and locking withdrawal.
And each electromagnetic valve in the oil return loop 11 is provided with a node, and the control position of the electromagnetic valve is monitored, so that the running reliability is further improved.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (9)
1. The utility model provides a take position locking spindle device speed regulator to fall down from closing auto-change over device in restoring, characterized by: the hydraulic control system comprises an open cavity oil way (1), a closed cavity oil way (2), a main pressure distribution valve (3), an oil return pipe (4), a pressure oil pipe (5), an A control oil way (6), a B control oil way (7), an oil way switching solenoid valve (8), a center-reset closing switching solenoid valve (9), an error stop solenoid valve (10), an oil return loop (11), a locking device (12), an emergency stop solenoid valve (13) and an oil source pipeline (14); the open cavity oil way (1), the closed cavity oil way (2), the oil return pipe (4) and the pressure oil pipe (5) are connected with the main pressure distribution valve (3); the middle-resetting closing switching electromagnetic valve (9), the error stopping electromagnetic valve (10) and the emergency stopping electromagnetic valve (13) are connected in series in the oil return loop (11); the oil source pipeline (14) is connected with the main pressure distribution valve (3) and the emergency stop electromagnetic valve (13); the oil path switching electromagnetic valve (8) is connected in series in the B control oil path (7).
2. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device according to claim 1, which is characterized in that: the scram electromagnetic valve (13) is a two-position four-way double electromagnetic valve with position nodes and position keeping; the double-center closing switching electromagnetic valve (9) between the oil path switching electromagnetic valve (8) and the emergency stop electromagnetic valve (13) realizes the switching between the self-centering and self-closing modes; the emergency stop electromagnetic valve (13) realizes the emergency stop of the unit in emergency.
3. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device according to claim 1, which is characterized in that: the middle-resetting closing switching electromagnetic valve (9) and the error stopping electromagnetic valve (10) are two-position four-way single electromagnetic valves with position nodes and locking devices, and double-node control is formed in an oil return loop (11) in a self-closing mode; when the electromagnetic valve (10) of the false shutdown is closed automatically, the false shutdown of the system caused by the false power failure of the switching electromagnetic valve (9) of the repeated closing is prevented.
4. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device as claimed in claim 1, which is characterized in that: the open cavity oil circuit (1) is connected with the open cavity of the servomotor of the water guide mechanism of the unit to form an open cavity loop, the closed cavity oil circuit (2) is connected with the closed cavity of the servomotor of the water guide mechanism of the unit to form a closed cavity loop, and the open cavity loop and the closed cavity loop respectively control the unit to be opened and closed.
5. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device according to claim 1, which is characterized in that: the oil return pipe (4) and the pressure oil pipe (5) are connected with the main pressure distributing valve (3) to form a normal pressure cavity.
6. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device according to claim 1, which is characterized in that: an oil source pipeline (14) on the upper portion of the main pressure distribution valve (3) drives the main pressure distribution valve (3) to move up and down, and the open cavity oil way (1) and the closed cavity oil way (2) are controlled to conduct pressure oil, return oil or block the oil way, so that the unit is controlled to be opened, closed or kept in the current state.
7. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device according to claim 1, which is characterized in that: the control oil circuit A (6) and the control oil circuit B (7) both control the action of the main pressure distribution valve (3), and the oil circuit switching electromagnetic valve (8) determines to switch the control oil circuit A (6) or the control oil circuit B (7) through a working position to control the speed regulator of the unit.
8. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device according to claim 1, which is characterized in that: the locking device (12) locks the working positions of the reset closing switching electromagnetic valve (9) and the error stopping electromagnetic valve (10) on the right side, and when the locking device is switched in, the system is in a power-off self-reset mode; when the locking device (12) is withdrawn from locking, the system is in a self-closing mode.
9. The power-down self-resetting self-closing switching device of the speed regulator with the position locking device according to claim 1, which is characterized in that: the middle-time closing switching electromagnetic valve (9), the error stopping electromagnetic valve (10) and the emergency stopping electromagnetic valve (13) are all connected to an oil return tank through an oil return loop (11); the oil path switching solenoid valve (8), the middle-time closing switching solenoid valve (9), the error stopping solenoid valve (10) and the emergency stopping solenoid valve (13) are respectively provided with nodes to monitor the control position of the solenoid valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120397654.8U CN214464647U (en) | 2021-02-23 | 2021-02-23 | Power-down self-resetting self-closing switching device of speed regulator with position locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120397654.8U CN214464647U (en) | 2021-02-23 | 2021-02-23 | Power-down self-resetting self-closing switching device of speed regulator with position locking device |
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| Publication Number | Publication Date |
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| CN214464647U true CN214464647U (en) | 2021-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120397654.8U Active CN214464647U (en) | 2021-02-23 | 2021-02-23 | Power-down self-resetting self-closing switching device of speed regulator with position locking device |
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|---|---|
| CN (1) | CN214464647U (en) |
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2021
- 2021-02-23 CN CN202120397654.8U patent/CN214464647U/en active Active
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