CN210239900U - Hydraulic turbine speed regulator with start-stop protection function - Google Patents
Hydraulic turbine speed regulator with start-stop protection function Download PDFInfo
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- CN210239900U CN210239900U CN201920830996.7U CN201920830996U CN210239900U CN 210239900 U CN210239900 U CN 210239900U CN 201920830996 U CN201920830996 U CN 201920830996U CN 210239900 U CN210239900 U CN 210239900U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a hydraulic turbine speed regulator of protect function is opened and stop in area, including oil supply unit, valve unit, main distributing valve, accident valves, emergency device, overspeed device, energy storage equipment and servomotor, oil supply unit passes through the pipeline and links to each other with energy storage unit, urgent stop device, accident valves respectively, urgent stop device passes through the pipeline and links to each other with main distributing valve, valve unit respectively, and urgent stop device links to each other with the valve unit between the pipeline that the valve unit links to each other, the valve unit passes through the pipeline and links to each other with overspeed device, main distributing valve, accident valves respectively, accident valves passes through the pipeline and links to each other with main distributing valve, overspeed device, valve unit, servomotor respectively. The utility model discloses have and possess a key and open, shut down the function, open, shut down the electrified action back of solenoid valve, the unit can accomplish and open, shut down the action, and the system has and opens, shut down self-sustaining function.
Description
Technical Field
The utility model relates to a power station hydraulic turbine speed governing technology field, specifically speaking relate to a hydraulic turbine speed regulator that protection function was opened in area.
Background
Electric power is one of important energy sources for industrial production and daily life application, and with the gradual decrease of non-renewable resources, the superiority of hydroelectric power generation is gradually shown. The water turbine speed regulator is used as important equipment of a hydraulic power plant, plays a key role in normal operation of the hydraulic power plant, is closely inseparable from the work of whether the hydraulic power plant can normally generate electricity, and is directly related to safe and stable operation of the water turbine unit and even an electric power system once the speed regulator fails or is artificially operated by mistake to cause abnormal unit operation. The safety and reliability of the speed regulator system are increasingly important.
Chinese grant bulletin No. CN205936957U discloses a hydraulic turbine governor scram device based on two solenoid valves and a linkage valve, including a first solenoid valve, a second solenoid valve, a linkage valve and a main pressure distribution valve, the first solenoid valve, the second solenoid valve are connected in series to form a double-coil control branch, the linkage valve is a hydraulic valve with a large area end R and a small area end J, the large area end R of the linkage valve is connected with a hydraulic source through a double-control branch, the small area end J of the linkage valve is connected with a main pressure oil pipe of the hydraulic source, the main pressure distribution valve is arranged in series between a hydraulic source and a servomotor of a guide vane of the hydraulic turbine governor, and the linkage valve is arranged in series on a control loop of the main pressure distribution valve. The emergency shutdown device can avoid misoperation of the speed regulator caused by the fault of a single electromagnetic valve body, improves the reliability of the emergency shutdown device, and has the advantages of simple structure and high safety and reliability.
However, the patent only performs protection for preventing malfunction and misoperation in the aspect of emergency shutdown, but does not consider the requirement of an accidental-action starting protection device and a normal shutdown configuration, and although the reliability of the emergency shutdown device is improved, the control loop for generating the unit accidental shutdown is complicated.
Disclosure of Invention
An object of the utility model is to solve the above-mentioned problem that exists among the prior art, provide a hydraulic turbine speed regulator that the area opened and stops protect function. The utility model discloses have and possess a key and open, shut down the function, open, shut down the electrified action back of solenoid valve, the unit can accomplish and open, shut down the action, and the system has and opens, shut down self-sustaining function.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a hydraulic turbine speed regulator that protect function is stopped in area which characterized in that: the emergency stop device is connected with the main pressure distribution valve and the control valve group through pipelines respectively, a filter is arranged between the pipelines connected with the emergency stop device and the control valve group, the control valve group is connected with the overspeed device, the main pressure distribution valve and the accident valve group through pipelines respectively, and the accident valve group is connected with the main pressure distribution valve, the overspeed device, the control valve group and the servomotor through pipelines respectively.
The control valve group comprises a starting electromagnetic valve, a normal stop electromagnetic valve, an emergency stop electromagnetic valve, a shuttle valve, a proportional valve and a start-stop hydraulic control reversing valve, wherein the starting electromagnetic valve is connected with a control cavity at one end of the start-stop hydraulic control reversing valve, a control cavity at the other end of the start-stop hydraulic control reversing valve is connected with the output end of the shuttle valve, the shuttle valve is respectively connected with the normal stop electromagnetic valve and the emergency stop electromagnetic valve, two control oil paths for outputting the start-stop hydraulic control reversing valve are connected with a P3 control cavity and a P1 control cavity of a main pressure distribution valve, and a P2 control cavity of the main pressure distribution valve is connected with the output.
The starting electromagnetic valve is a two-position three-way electromagnetic valve.
The start-stop hydraulic control reversing valve is a two-position four-way reversing valve.
The main pressure distributing valve is a three-position four-way servo reversing valve and is provided with a valve core position sensor III.
The emergency stop device comprises a first pilot control solenoid valve and a cartridge valve, the first pilot control solenoid valve is connected with the cartridge valve, and the cartridge valve is respectively connected with the filter and the main pressure distribution valve.
A first position sensor is arranged in the cartridge valve.
The accident valve group comprises a pilot control electromagnetic valve II and a hydraulic reversing valve, the pilot control electromagnetic valve II is respectively connected with the overspeed device and the hydraulic reversing valve, and the hydraulic reversing valve is respectively connected with the control valve group, the main distributing valve and the servomotor.
And a second valve core position sensor is arranged in the hydraulic reversing valve.
The overspeed device includes overspeed hydraulic reversing valve, speed measuring fluted disc, the overspeed pendulum that flies and speed measuring probe, the setting of the overspeed pendulum that flies is on the fluted disc that tests the speed, the overspeed pendulum produces centrifugal force and acts on the overspeed hydraulic reversing valve when the unit is too fast, the hydraulic reversing valve is connected with valve unit, accident valves respectively.
The oil supply device comprises an oil return box, an oil pump motor and a plug-in valve group, wherein the oil return box is connected with the oil pump motor, the oil pump motor is connected with the plug-in valve group, and the plug-in valve group supplies oil to the energy storage device, the emergency stop device and the accident valve group.
The oil pump motor is equipped with 2.
The energy storage device is provided with a pressure switch, a pressure gauge, an automatic air supply device, a safety valve and a magnetic turning plate liquid level meter.
And a valve is arranged between the oil supply device and the pipeline connected with the energy storage device.
Adopt the utility model has the advantages of:
one, the utility model discloses the system possesses a key and opens, shut down the function, opens, shuts down the electrified action back of solenoid valve, and the unit can accomplish and open, shut down the action, and the system has opens, shuts down self-sustaining function. Except the action of starting the electromagnetic valve in the shutdown state, the unit cannot be started by any other control operation, so that the system reliability is further enhanced, and the safety of the unit is protected.
Two, the utility model discloses in have the urgent stop device of electrified guide control solenoid valve one, accessible guide control solenoid valve controls the oil circuit of urgent stop device cut-off system and pressure oil source after stopping, the maloperation leads to the unusual start operation of unit after preventing to stop.
Three, the utility model discloses well case position sensor one, case position sensor two and case position sensor three that set up can cross the position of knowing the case through case sensor, ensure that the unit shuts down.
Fourth, the utility model discloses in, through the effect of fluted disc speed sensor, proportional valve and main distributing valve, can adjust and accomplish the normal switch-on and switch-off control of unit to unit speed.
Fifthly, the utility model discloses in, through the effect of overspeed device and accident valves, can guarantee when the unit is overspeed, carry out the accident and shut down the operation.
Drawings
Fig. 1 is a schematic structural diagram of the control principle of the present invention;
FIG. 2 is a schematic view of the connection structure of the oil supply device of the present invention;
fig. 3 is a schematic view of the connection relationship of the energy storage device of the present invention;
FIG. 4 is a schematic view of the connection relationship of the overspeed device of the present invention;
FIG. 5 is a schematic view of the connection structure of the control valve set of the present invention;
FIG. 6 is a schematic structural view of the main pressure distribution valve of the present invention;
fig. 7 is a schematic view of the connection relationship structure of the accident valve set of the present invention;
FIG. 8 is a schematic view of the filter of the present invention;
fig. 9 is a schematic view of the connection structure of the emergency stop device of the present invention;
the reference numbers in the figures are: 1. the system comprises an oil return box, 2, an oil pump motor, 3, a cartridge valve group, 4, an energy storage device, 5, an overspeed device, 6, an emergency stop electromagnetic valve, 7, a shuttle valve, 8, a normal stop electromagnetic valve, 9, a start electromagnetic valve, 10, a proportional valve, 11, a start-stop hydraulic control reversing valve, 12, a main pressure distribution valve, 13, an accident valve group, 14, a filter, 15, an emergency stop device, 16, a servomotor, 4.1, a pressure switch, 4.2, a pressure gauge, 4.3, an automatic air supply device, 4.4, a safety valve, 4.5, a magnetic turning plate liquid level meter, 5.1, an overspeed hydraulic reversing valve, 5.2, a speed measurement fluted disc, 5.3, an overspeed flying pendulum, 5.4, a speed measurement probe, 13.1, a pilot control electromagnetic valve II, 13.2, a reversing hydraulic valve, 15.1, a pilot control electromagnetic valve I, 15.2 and a cartridge valve.
Detailed Description
Example 1
A water turbine speed regulator with a start-stop protection function comprises an oil supply device, a control valve group, a main pressure distribution valve 12, an accident valve group 13, an emergency stop device 15, an overspeed device 5, an energy storage device 4 and a servomotor 16, wherein the oil supply device is respectively connected with the energy storage device 4, the emergency stop device 15 and the accident valve group 13 through pipelines, the emergency stop device 15 is respectively connected with the main pressure distribution valve 12 and the control valve group through pipelines, a filter 14 is arranged between the pipelines where the emergency stop device 15 and the control valve group are connected, the control valve group is respectively connected with the overspeed device 5, the main pressure distribution valve 12 and the accident valve group 13 through pipelines, and the accident valve group 13 is respectively connected with the main pressure distribution valve 12, the overspeed device 5, the control valve group and the servomotor 16 through pipelines.
The control valve group comprises a starting electromagnetic valve 9, a normal stop electromagnetic valve 8, an emergency stop electromagnetic valve 6, a shuttle valve 7, a proportional valve 10 and a start-stop hydraulic control reversing valve 11, wherein the starting electromagnetic valve 9 is connected with a control cavity at one end of the start-stop hydraulic control reversing valve 11, a control cavity at the other end of the start-stop hydraulic control reversing valve 11 is connected with an output end of the shuttle valve 7, the shuttle valve 7 is respectively connected with the normal stop electromagnetic valve 8 and the emergency stop electromagnetic valve 6, the start-stop hydraulic control reversing valve 11 outputs two control oil paths to be connected with a P3 control cavity and a P1 control cavity of a main pressure distribution valve 12, and a P2 control cavity of the main pressure distribution valve 12 is connected with an output end.
The starting electromagnetic valve 9 is a two-position three-way electromagnetic valve.
The start-stop hydraulic control reversing valve 11 is a two-position four-way reversing valve.
The main pressure distributing valve 12 is a three-position four-way servo reversing valve. The main pressure distributing valve 12 is provided with a third valve core position sensor.
The emergency stop device 15 comprises a first pilot control solenoid valve 15.1 and a cartridge valve 15.2, the first pilot control solenoid valve 15.1 is connected with the cartridge valve 15.2, and the cartridge valve 15.2 is respectively connected with the filter 14 and the main pressure distribution valve 12.
A first position sensor is arranged in the cartridge valve 15.2.
The accident valve group 13 comprises a pilot control electromagnetic valve II 13.1 and a hydraulic reversing valve 13.2, the pilot control electromagnetic valve II 13.1 is respectively connected with the overspeed device 5 and the hydraulic reversing valve 13.2, and the hydraulic reversing valve 13.2 is respectively connected with the control valve group, the main pressure distributing valve 12 and the servomotor 16.
And a valve core position sensor II is arranged in the hydraulic reversing valve 13.2.
The oil supply device comprises an oil return box 1, an oil pump motor 2 and a cartridge valve group 3, wherein the oil return box 1 is connected with the oil pump motor 2, the oil pump motor 2 is connected with the cartridge valve group 3, and the cartridge valve group 3 supplies oil to the energy storage device 4, the emergency stop device 15 and the accident valve group 13.
The oil pump motor 2 is provided with 2.
The energy storage device 4 is provided with a pressure switch 4.1, a pressure gauge 4.2, an automatic air supply device 4.3, a safety valve 4.4 and a magnetic turning plate liquid level meter 4.5.
And a valve is arranged between the oil supply device and the pipeline connected with the energy storage device 4.
Example 2
A water turbine speed regulator with a start-stop protection function comprises an oil supply device, a control valve group, a main pressure distribution valve 12, an accident valve group 13, an emergency stop device 15, an overspeed device 5, an energy storage device 4 and a servomotor 16, wherein the oil supply device is respectively connected with the energy storage device 4, the emergency stop device 15 and the accident valve group 13 through pipelines, the emergency stop device 15 is respectively connected with the main pressure distribution valve 12 and the control valve group through pipelines, a filter 14 is arranged between the pipelines where the emergency stop device 15 and the control valve group are connected, the control valve group is respectively connected with the overspeed device 5, the main pressure distribution valve 12 and the accident valve group 13 through pipelines, and the accident valve group 13 is respectively connected with the main pressure distribution valve 12, the overspeed device 5, the control valve group and the servomotor 16 through pipelines. The filter 14 adopts a duplex oil filter with the model number of HH8674, and has the functions of online switching and blockage alarming.
The control valve group comprises a starting electromagnetic valve 9, a normal stop electromagnetic valve 8, an emergency stop electromagnetic valve 6, a shuttle valve 7, a proportional valve 10 and a start-stop hydraulic control reversing valve 11, wherein the starting electromagnetic valve 9 is connected with a control cavity at one end of the start-stop hydraulic control reversing valve 11, a control cavity at the other end of the start-stop hydraulic control reversing valve 11 is connected with an output end of the shuttle valve 7, the shuttle valve 7 is respectively connected with the normal stop electromagnetic valve 8 and the emergency stop electromagnetic valve 6, the start-stop hydraulic control reversing valve 11 outputs two control oil paths to be connected with a P3 control cavity and a P1 control cavity of a main pressure distribution valve 12, and a P2 control cavity of the main pressure distribution valve 12 is connected with an output end.
The unit starting part adopts a starting electromagnetic valve 9, an action command of the starting electromagnetic valve 9 must be executed before the unit is started, and the starting electromagnetic valve 9 is not electrified during the normal operation period and the shutdown period of the unit.
The electro-hydraulic part adopts a proportional valve 10, and control oil output by the proportional valve 10 is directly connected with a control cavity P2 on one path of the main pressure distribution valve 12 and is used for operating the movement direction of a valve core of the main pressure distribution valve 12.
The starting electromagnetic valve 9 is a two-position three-way electromagnetic valve.
The start-stop hydraulic control reversing valve 11 is a two-position four-way reversing valve.
As shown in fig. 6, the main pressure distribution valve 12 is a vertical ultra-large three-position four-way servo reversing valve, the valve core position is controlled by the working state of the upper end control valve set, and the main pressure distribution valve 12 is provided with a stationary contact switch and a valve core position sensor for feeding back the valve core position state of the main pressure distribution valve 12. After the electromagnet of the starting electromagnetic valve 9 is electrified, the left station of the starting and stopping hydraulic control reversing valve 11 is switched on and self-maintained, the starting electromagnetic valve 9 is powered off and self-reset, and the unit is in a state of waiting for starting after finishing the starting process. The P3 control cavity of the main distributing valve 12 keeps constant pressure, and the P1 control cavity of the main distributing valve 12 is communicated with the oil. The pressure action area of the P2 control cavity is larger than that of the P1 control cavity, the oil pressure of the P2 control cavity can be controlled through the proportional valve 10, the position of the main pressure distribution valve 12 core is adjusted by utilizing the pressure difference between the P1 control cavity and the P2 control cavity, and the normal operation control of the starting of the unit is achieved. After the normal stop solenoid valve 8 or the emergency stop solenoid valve 6 acts, the start-stop pilot-controlled directional control valve 11 is switched to the right station, the P3 control cavity of the main pressure distribution valve 12 releases pressure, the P1 control cavity of the main pressure distribution valve 12 is filled with pressure oil, and the valve core of the main pressure distribution valve 12 moves downwards to complete the stop operation.
The accident valve group 13 comprises a pilot control electromagnetic valve II 13.1 and a hydraulic reversing valve 13.2, the pilot control electromagnetic valve II 13.1 is respectively connected with the overspeed hydraulic reversing valve 5.1 and the hydraulic reversing valve 13.2, and the hydraulic reversing valve 13.2 is respectively connected with the control valve group, the main distributing valve 12 and the servomotor 16.
And a valve core position sensor II is arranged in the hydraulic reversing valve 13.2.
The overspeed device 5 comprises an overspeed hydraulic directional valve 5.1, a speed measuring fluted disc 5.2, an overspeed flying pendulum 5.3 and a speed measuring probe 5.4. The overspeed flying pendulum 5.3 is fixedly arranged on a speed measuring fluted disc 5.2, and the speed measuring probe 5.4 detects the rotating speed of the fluted disc to generate a rotating speed signal for system adjustment. When the overspeed flying pendulum 5.3 generates centrifugal force to act on the overspeed hydraulic reversing valve 5.1 when the unit is overspeed, the overspeed hydraulic reversing valve 5.1 switches a control oil way to enable the accident valve bank 13 to act to enable the unit to complete shutdown when the unit is overspeed, pressure oil of a pilot control electromagnetic valve II 13.1 is from the overspeed hydraulic reversing valve 5.1 of the overspeed device 5 connected through a pipeline, mechanical force acts on the overspeed hydraulic reversing valve 5.1 when the unit is overspeed, the right station of the overspeed hydraulic reversing valve 5.1 is switched on, pressure oil in a control cavity at the right end of a hydraulic reversing valve 13.2 of the accident valve bank 13 is unloaded, the hydraulic reversing valve 13.2 is switched to the left station, and the pressure oil directly enters a closing cavity of a servomotor 16 through the accident valve bank 13 to complete shutdown; the pilot control electromagnetic valve II 13.1 can also receive an electrical instruction to directly act to complete station switching of the accident valve group 13, so that the unit is stopped. The speed probe 5.4 detects the number of teeth of speed measuring fluted disc 5.2, but when the centrifugal force that the excessive speed flyaway 5.3 produced has not yet reached and can be used on the excessive speed hydraulic directional control valve 5.1, speed probe 5.4 will measure the number of teeth of speed measuring fluted disc 5.2, convert the signal feedback to the LUC system, and the LUC system judges that the rotation is fast or slow and then control proportional valve 10 and carry out the speed governing operation. The proportional valve 10 controls the action of the main distributing valve 12 to regulate the speed of the unit.
The stop control part is provided with a normal stop electromagnetic valve 8 and an emergency stop electromagnetic valve 6, and the normal stop electromagnetic valve 8 and the emergency stop electromagnetic valve 6 are mutually independent. The normal shutdown solenoid valve 8 (receives normal shutdown command to execute unit shutdown operation, and receives the emergency shutdown command or controls the circuit to move under the power-down condition under the emergency shutdown solenoid valve 6 accident condition, the output oil circuit of the emergency shutdown solenoid valve 6 and the normal shutdown solenoid valve 8 can make the start-stop hydraulic control reversing valve 11 move through the shuttle valve 7, and the shuttle valve 7 is used as a selector valve, can automatically switch on the oil circuit under the action of pressure oil according to the states of the emergency shutdown solenoid valve 6 and the normal shutdown solenoid valve 8, and avoids forming a small hydraulic circuit with the two shutdown solenoid valves to make the shutdown operation invalid.
The output end of the emergency stop device 15 is connected with a main pressure distribution valve 12 and a filter 14, and oil filtered by the filter 14 is supplied to the accident valve bank 13, the overspeed device 5 and the control valve bank for controlling the speed regulating system.
The emergency stop device 15 is provided between the oil supply device and the main pressure distribution valve 12, and further, the emergency stop device 15 is provided before the filter 14. The emergency stop device 15 comprises a first pilot control solenoid valve 15.1 and a cartridge valve 15.2, the first pilot control solenoid valve 15.1 is connected with the cartridge valve 15.2, and the cartridge valve 15.2 is respectively connected with the filter 14 and the main pressure distribution valve 12. When the unit normally operates, the pilot control electromagnetic valve I15.1 controls the cartridge valve 15.2 to be opened upwards. After the unit is shut down in an accident, an over-speed or a normal condition, the first pilot control solenoid valve 15.1 controls the valve core of the cartridge valve 15.2 to move downwards, and a pressure oil source of the control valve group and the main pressure distributing valve 12 is cut off, so that abnormal starting operation of the unit caused by misoperation after the unit is shut down is prevented. Before the unit is started, the emergency stop device 15 is closed, and the cartridge valve 15.2 is controlled to be opened upwards through the pilot control electromagnetic valve I15.1.
A first position sensor is arranged in the cartridge valve 15.2.
The oil supply device comprises an oil return box 1, an oil pump motor 2 and a cartridge valve group 3, wherein the oil return box 1 is connected with the oil pump motor 2, the oil pump motor 2 is connected with the cartridge valve group 3, and the cartridge valve group 3 supplies oil to the energy storage device 4, the emergency stop device 15 and the accident valve group 13.
Further, in order to ensure the reliability of the operation, the number of the oil pump motors 22 is 2, one is set as an operating oil pump, the other is set as a standby oil pump, and the two oil pumps should be switched periodically. Two corresponding cartridge valves 15.2 are also provided.
The energy storage device 4 is connected with a pressure switch 4.1 for pressure adjustment, an automatic air supply device 4.3 and a safety valve 4.4. Further, in order to measure the liquid level of the energy storage device 4, the energy storage device 4 is further connected with a magnetic turning plate liquid level meter 4.5, and a position switch is arranged on the magnetic turning plate liquid level meter 4.5. Further, the energy storage device 4 is also connected with a pressure gauge 4.2 for pressure display.
And a valve is arranged between the oil supply device and the pipeline connected with the energy storage device 4.
The system has the function of starting and stopping by one key, the unit can complete the starting and stopping actions after the starting and stopping electromagnetic valve is electrified for one time, and the system has the function of self-keeping of starting and stopping. Except for the action of starting the electromagnetic valve 9 in the shutdown state, the unit cannot be started in any other control operation, so that the system reliability is further enhanced, and the safety of the unit is protected. The system adopts the emergency stop device 15 to control the pressure oil source of the system, and the emergency stop device 15 is closed by controlling the electromagnetic valve of the emergency stop device 15 after the unit is stopped, so that the pressure oil source of the control system can be cut off, the unit can be stably kept in a shutdown state, the misoperation of the speed regulation system can not cause the abnormal startup of the unit, and the reliability of equipment is ensured.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a hydraulic turbine speed regulator that protect function is stopped in area which characterized in that: the emergency stop valve comprises an oil supply device, a control valve group, a main pressure distribution valve (12), an accident valve group (13), an emergency stop device (15), an overspeed device (5), an energy storage device (4) and a servomotor (16), wherein the oil supply device is respectively connected with the energy storage device (4), the emergency stop device (15) and the accident valve group (13) through pipelines, the emergency stop device (15) is respectively connected with the main pressure distribution valve (12) and the control valve group through pipelines, a filter (14) is arranged between the pipelines connected with the emergency stop device (15) and the control valve group, the control valve group is respectively connected with the overspeed device (5), the main pressure distribution valve (12) and the accident valve group (13) through pipelines, and the accident valve group (13) is respectively connected with the main pressure distribution valve (12), the overspeed device (5), the control valve group and the servomotor (16) through pipelines.
2. The hydro governor with start-stop protection function of claim 1, wherein: the control valve group comprises a starting electromagnetic valve (9), a normal stop electromagnetic valve (8), an emergency stop electromagnetic valve (6), a shuttle valve (7), a proportional valve (10) and a start-stop hydraulic control reversing valve (11), wherein the starting electromagnetic valve (9) is connected with a control cavity at one end of the start-stop hydraulic control reversing valve (11), the control cavity at the other end of the start-stop hydraulic control reversing valve (11) is connected with the output end of the shuttle valve (7), the shuttle valve (7) is connected with the normal stop electromagnetic valve (8) and the emergency stop electromagnetic valve (6) respectively, the start-stop hydraulic control reversing valve (11) outputs two control oil ways to be connected with a P3 control cavity and a P1 control cavity of a main pressure distribution valve (12), and a P2 control cavity of the main pressure distribution valve (12) is connected with the output end of the proportional.
3. The hydro governor with start-stop protection function of claim 1, wherein: the emergency stop device (15) comprises a first pilot control electromagnetic valve (15.1) and a cartridge valve (15.2), the first pilot control electromagnetic valve (15.1) is connected with the cartridge valve (15.2), and the cartridge valve (15.2) is connected with the filter (14) and the main pressure distribution valve (12) respectively.
4. A hydro governor with start stop protection as defined in claim 3, wherein: a first position sensor is arranged in the cartridge valve (15.2).
5. The hydro governor with start-stop protection function of claim 1, wherein: the accident valve bank (13) comprises a pilot control electromagnetic valve II (13.1) and a hydraulic reversing valve (13.2), the pilot control electromagnetic valve II (13.1) is respectively connected with the overspeed device (5) and the hydraulic reversing valve (13.2), and the hydraulic reversing valve (13.2) is respectively connected with the control valve bank, the main distributing valve (12) and the servomotor (16).
6. The hydro governor with start-stop protection function of claim 5, wherein: and a second valve core position sensor is arranged in the hydraulic reversing valve (13.2).
7. The hydro governor with start-stop protection function of claim 1, wherein: and the main pressure distribution valve (12) is provided with a valve core position sensor III.
8. The hydro governor with start-stop protection function of claim 1, wherein: overspeed device (5) including overspeed hydraulic reversing valve (5.1), test speed fluted disc (5.2), the overspeed pendulum that flies (5.3) and test speed probe (5.4), the overspeed pendulum that flies (5.3) sets up on the fluted disc that tests the speed (5.2), the overspeed pendulum that flies (5.3) produces centrifugal force and acts on overspeed hydraulic reversing valve (5.1) when the unit is overspeed, the hydraulic reversing valve is connected with valve unit, accident valves (13) respectively.
9. The hydro governor with start-stop protection function of claim 1, wherein: the oil supply device comprises an oil return box (1), an oil pump motor (2) and a plug-in valve group (3), wherein the oil return box (1) is connected with the oil pump motor (2), the oil pump motor (2) is connected with the plug-in valve group (3), and the plug-in valve group (3) supplies oil to the energy storage device (4), the emergency stop device (15) and the accident valve group (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920830996.7U CN210239900U (en) | 2019-06-04 | 2019-06-04 | Hydraulic turbine speed regulator with start-stop protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920830996.7U CN210239900U (en) | 2019-06-04 | 2019-06-04 | Hydraulic turbine speed regulator with start-stop protection function |
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| Publication Number | Publication Date |
|---|---|
| CN210239900U true CN210239900U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920830996.7U Active CN210239900U (en) | 2019-06-04 | 2019-06-04 | Hydraulic turbine speed regulator with start-stop protection function |
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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 |
| CN115875185A (en) * | 2022-11-03 | 2023-03-31 | 中国长江电力股份有限公司 | Overspeed protection device and method for hydroelectric generating set |
-
2019
- 2019-06-04 CN CN201920830996.7U patent/CN210239900U/en active Active
Cited By (3)
| 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 |
| CN115875185A (en) * | 2022-11-03 | 2023-03-31 | 中国长江电力股份有限公司 | Overspeed protection device and method for hydroelectric generating set |
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