CN219795754U - Pressure oil tank pressure and liquid level parameter checking device of hydraulic system of hydropower station speed regulator - Google Patents
Pressure oil tank pressure and liquid level parameter checking device of hydraulic system of hydropower station speed regulator Download PDFInfo
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Abstract
The utility model discloses a pressure oil tank pressure and liquid level parameter calibration device of a hydraulic system of a hydropower station speed regulator, which comprises an upper oil pipe connected with the upper end of the pressure oil tank and a lower oil pipe connected with the lower end of the pressure oil tank, wherein one end of the upper oil pipe is connected with the upper side of a liquid level meter, one end of the lower oil pipe is respectively connected with one end of a pressurizing measuring pipe, one end of the pressurizing measuring pipe and one end of the liquid level measuring pipe, the other end of the liquid level measuring pipe is connected with the lower side of the liquid level meter, the other end of the pressurizing measuring pipe is connected with a pressurizing control device, the other end of the pressurizing measuring pipe is connected with the input end of a distribution pipe, the output end of the distribution pipe is connected with the pressure measuring device, and valves are arranged on the upper oil pipe, the lower oil pipe, the pressurizing measuring pipe, the pressure measuring pipe and the liquid level measuring pipe; the utility model not only satisfies the monitoring and control of the pressure and liquid level measuring element under the operating condition of the unit, but also is suitable for the process of on-line setting of liquid level and pressure components under the maintenance condition of the unit.
Description
Technical Field
The utility model relates to the field of hydraulic automatic control, in particular to a verifying device for pressure oil tank pressure and liquid level parameters of a hydraulic system of a hydropower station speed regulator.
Background
The hydraulic system of the speed regulator is one of important components of the hydroelectric generating set of the hydropower station, and is also a continuous pressure source for the hydraulic system of the speed regulator, pressure and liquid level signals of a pressure oil tank of the hydraulic system need to be monitored on line during running of the hydraulic system of the hydropower station, the pressure signals participate in accident low oil pressure shutdown protection control, the liquid level signals participate in accident low oil level shutdown and closing isolation valve protection control, therefore, the acquisition accuracy of the pressure signals and the liquid level signals is crucial, the pressure signals are usually acquired by a pressure switch and a pressure sensor, and the liquid level signals are acquired by a common magnetic flap liquid level meter and a magnetic switch. At present, the system only has the functions of on-line monitoring and control, and does not have the functions of on-line setting of liquid level and pressure components. Because the pressure switch has high requirements on node precision and tightness, the regular disassembly and installation can have great influence on the node and tightness; the magnetic flap level gauge is arranged on the pressure oil tank, and the magnetic flap level gauge is about two meters and seven meters and has a weight of 40 kg, so that the disassembly and the assembly are difficult; even if the offline verification of the disassembly liquid level meter can not truly simulate the operation working condition of the field device, the risks of high-altitude operation and sealing oil leakage and the like of pipeline installation exist, and meanwhile, time and labor are wasted.
Disclosure of Invention
The utility model aims to overcome the defects and provide a pressure oil tank pressure and liquid level parameter checking device of a hydraulic system of a hydropower station speed regulator, so as to solve the problems in the background art.
The utility model aims to solve the technical problems, and adopts the technical scheme that: the utility model provides a power station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter calibration equipment, includes the last oil pipe that leads to that is connected with pressure oil tank upper end and the lower oil pipe that leads to that is connected with pressure oil tank lower extreme, it is connected with the level gauge upside to go up oil pipe one end, down oil pipe one end respectively with pressurization survey buret one end, pressure survey buret one end and liquid level survey buret one end, the liquid level survey buret other end is connected with the liquid level gauge downside, the pressurization survey buret other end is connected with pressure control device, the pressure survey buret other end is connected with the distribution pipe input, the distribution pipe output is connected with pressure measurement device, go up oil pipe, pressure survey buret and liquid level survey buret on all be equipped with the valve.
Preferably, the pressurization control device comprises an oil pump and a control box connected with a control end of the oil pump, wherein movable wheels are arranged at the bottom of the control box, heat dissipation fans are arranged on two sides of the control box, an indicator light, a touch screen, a button, a switching handle and a door lock are arranged on a front cabinet door of the control box, and lifting lugs are arranged at the top of the control box.
Preferably, an upper oil passing valve is arranged on the upper oil passing pipe.
Preferably, a lower oil passing valve is arranged on the lower oil passing pipe.
Preferably, a pressurizing control valve is arranged on the pressurizing measuring tube, and the input end of the pressurizing measuring tube is connected with an oil outlet of an oil pump of the pressurizing control device through a pressurizing pump connector.
Preferably, the pressure measuring tube is provided with a pressure control valve.
Preferably, a liquid level control valve is arranged on the liquid level measuring tube.
Preferably, the pressure measuring device comprises a pressure sensor, a mechanical pressure gauge, a pressure switch, a pre-gauge valve.
Preferably, the level gauge is a magnetic flap level gauge.
The utility model has the beneficial effects that:
the device can realize the verification functions of six modes, namely pressure shunt verification in an external pressurizing mode, liquid level shunt verification in the external pressurizing mode, liquid level and pressure synchronous verification in the external pressurizing mode, liquid level shunt verification in a pressurizing mode of a hydraulic system, pressure shunt verification in the pressurizing mode of the hydraulic system and pressure and liquid level synchronous verification in the pressurizing mode of the hydraulic system, is suitable for different operation conditions, and can more meet the actual requirements of the site.
The utility model can control the output oil way of the pressure pump control device through the pressure pump control valve, and can control the oil ways of the pressure measuring tube and the liquid level measuring tube; the output end of the control valve of the pressure pump is communicated with the input end of the pressure control valve and the input end of the liquid level control valve, so that branching independent control and multipath synchronous control oil ways can be realized on the pressure measuring pipe and the liquid level measuring pipeline; the pressure control valve can control the on-off of an oil way of the pressure sensor, the pressure switch and the mechanical pressure gauge; the liquid level control valve and the upper oil-passing valve can control the on-off of an oil way of the magnetic flap liquid level meter; the lower oil-through valve can control the on-off of an oil way between the pressure oil tank and the pressure measuring pipe as well as between the liquid level measuring pipe.
The utility model sequentially combines the upper oil-passing valve, the lower oil-passing valve, the pressure control valve and the pressure pump control valve to perform switching operation, can effectively isolate a liquid level measurement oil way from a pressure measurement oil way, and improves the working efficiency and the safety.
The utility model not only satisfies the monitoring and control of the pressure and liquid level measuring element under the operating condition of the unit, but also is suitable for the process of on-line setting of liquid level and pressure components under the maintenance condition of the unit.
The device disclosed by the utility model is convenient to cooperate and install, the whole device is reasonable and compact in structure, strong in stability and extremely strong in practicability.
The utility model can further optimize the verification mode, truly simulate the actual running environment of the field device, solve the problems of difficult disassembly and installation, node offset and the like, further improve the monitoring reliability and the action reliability of the measuring element and avoid the unplanned shutdown of the unit caused by misoperation of the pressure switch or jump of the pressure sensor.
Drawings
FIG. 1 is a schematic diagram of a perspective structure of a device for verifying pressure and liquid level parameters of a hydraulic system of a hydropower station speed regulator;
fig. 2 is a schematic perspective view of a control box.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, the pressure and liquid level parameter checking device of the hydraulic system of the hydropower station speed regulator comprises an upper oil passing pipe 2 connected with the upper end of the pressure oil tank 1 and a lower oil passing pipe 3 connected with the lower end of the pressure oil tank 1, one end of the upper oil passing pipe 2 is connected with the upper side of the liquid level meter 14, one end of the lower oil passing pipe 3 is respectively connected with one end of the pressure measuring pipe 15, one end of the pressure measuring pipe 16 and one end of the liquid level measuring pipe 17, the other end of the liquid level measuring pipe 17 is connected with the lower side of the liquid level meter 14, the other end of the pressure measuring pipe 15 is connected with the pressure control device 10, the other end of the pressure measuring pipe 16 is connected with the input end of the distribution pipe 18, the output end of the distribution pipe 18 is connected with the pressure measuring device, and valves are arranged on the upper oil passing pipe 2, the lower oil passing pipe 3, the pressure measuring pipe 15, the pressure measuring pipe 16 and the liquid level measuring pipe 17.
Preferably, the pressurization control device 10 comprises an oil pump and a control box 20 connected with a control end of the oil pump, a movable wheel 27 is arranged at the bottom of the control box 20, heat dissipation fans 26 are arranged on two sides of the control box 20, an indicator lamp 21, a touch screen 22, a button 23, a switching handle 24 and a door lock 25 are arranged on a front cabinet door of the control box 20, and a lifting lug 28 is arranged at the top of the control box 20. In the embodiment, the pressurizing pump control device body is provided with the oil pump and the control box, so that the system can be provided with the required oil pressure; the control box comprises a control box body, an indicator light, a touch screen, a button, a switching handle, a door lock, a heat radiation fan and a movable wheel. Radiating fans are designed on two sides of the control box body so as to radiate heat in the box body; four moving wheels are designed at the bottom of the control box body so as to facilitate convenient movement. The cabinet door on the front side of the control box body is designed with a first row of indicator lamps, and the indicator lamps can realize pressure switch action state indication and various valve states; the touch screen is designed below the indicator lamp and can display information collected by the sensor, pressure switch action records, control valves and the booster pump. The switching handle is arranged below the touch screen to switch the control modes of the valve and the oil pump; the door lock is designed on the control box cabinet door so as to facilitate opening the box body to check the operation condition of the electrical equipment. The cable hole is designed at the rear of the control box body so that external wiring can be conveniently connected into the box body. Four groups of lifting lugs are designed at the top end of the control box body so as to facilitate lifting and moving to a position inconvenient to move.
Preferably, the upper oil passing pipe 2 is provided with an upper oil passing valve 4.
Preferably, the lower oil passing pipe 3 is provided with a lower oil passing valve 5.
Preferably, the pressurizing control valve 8 is arranged on the pressurizing measuring tube 15, and the input end of the pressurizing measuring tube 15 is connected with the oil outlet of the oil pump of the pressurizing control device 10 through the pressurizing pump connector 9.
Preferably, the pressure measuring tube 16 is provided with a pressure control valve 7.
Preferably, the liquid level measuring tube 17 is provided with a liquid level control valve 6.
Preferably, the pressure measuring device comprises a pressure sensor 11, a mechanical pressure gauge 13, a pressure switch 12, a pre-gauge valve 19. In the embodiment, the distribution pipe is provided with 2 groups of pressure sensors, 1 group of mechanical pressure meters and 4 groups of pressure switches, and the front valves are respectively arranged in front of the interfaces of the 2 groups of pressure sensors, the 1 group of mechanical pressure meters and the 4 groups of pressure switches.
Preferably, the level gauge 14 is a magnetic flap level gauge.
Further, the pressure switch preferably adopts a Wick (WIKA) series product, the measuring range is 0-16 Mpa, the power supply is 24VDC and the protection level is IP68, and is connected by external threads G1/4 "(radial).
Further, the pressure sensor is a priority Wick (WIKA) series product, the pressure point setting range is 1-16 MPa, the tolerance pressure is 20.0MPa, and the pressure dead zone is less than 0.5MPa; the output of the switch is two SPDT, the capacity is 15A/250VAC, the precision is less than 0.2%, and the repetition precision is less than 0.5% of the measuring range; adopting external thread G1/4 "(radial) connection; the shell protection class is IP66.
Furthermore, the mechanical pressure gauge preferably adopts a Wick (WIKA) series product, the gauge head diameter is 80, the connection mode is KJ10 and DN10, and external threads G1/4 "(radial) are adopted for connection; the precision is 2.5 level, and the measuring range is 1-16 MPa.
Further, the pressurizing pump control device adopts a 380V/220V gear pump hydraulic power unit of a customized hydraulic station hydraulic system press pump station assembly, 1 station of an 8KW/380V vertical motor, 1 station of a stainless steel gear pump, 1 station of a manual reversing valve, 1 tank volume of 50 liters, 1 liquid level meter, 1 oil absorption filter screen, 1 pump seat, 1 pressure gauge and 1 set of connector fittings, wherein the using pressure range is 1-16 MPa, and the flow is 20 liters per minute.
Further, the normal pressure value of the pressure oil tank and the pipeline is 6.3Mpa, and the setting value of the pressure switch is generally defined as high pressure, low pressure and low accident oil pressure, and the setting values are 6.8Mpa, 6.5Mpa, 5.7Mpa, 5.5Mpa and 5.2Mpa.
Further, the normal liquid level value of the liquid level meter is 1950mm, and the liquid level magnetic switch is defined as the liquid level which is too high, the liquid level which is low, the liquid level which is too low and the accident which is low, and the setting values of the liquid level magnetic switch are 2350mm, 2250mm, 1850mm, 1000mm and 800mm.
Furthermore, the device is suitable for external pressurization of the pressurization pump control device and a pressurization mode of a hydraulic system, and can realize the synchronous verification and shunt verification functions of the liquid level and the pressure of the pressure oil tank.
Furthermore, the device can realize the verification functions of six modes, namely pressure shunt verification in an external pressurizing mode, liquid level shunt verification in the external pressurizing mode, liquid level and pressure synchronous verification in the external pressurizing mode, liquid level shunt verification in a pressurizing mode of a hydraulic system, pressure shunt verification in the pressurizing mode of the hydraulic system, and pressure and liquid level synchronous verification in the pressurizing mode of the hydraulic system.
In the technical scheme, the device is suitable for external pressurization of the pressurizing pump control device and a pressurization mode of a hydraulic system, and can realize the synchronous verification and shunt verification functions of the liquid level and the pressure of the pressure oil tank. Each mode is specifically as follows:
the external pressurization mode of the pressure pump control device is that when a pressure pump control valve is opened, a control oil way of a lower oil passing valve and an upper oil passing valve is closed, a pressure pump connector is connected with a pump output port of the pressure pump control device, and oil pressure is controlled and output through the pressure pump control device.
The hydraulic system pressurization mode is to close a pressurizing pump control valve, open control oil ways of a lower oil passing valve and an upper oil passing valve, disconnect a pressurizing pump connector from a pump output port of a pressurizing pump control device, and control and output oil pressure through an oil pump control cabinet of a speed regulator hydraulic system.
The pressure shunt check is a control oil way when the pressure control valve is in a full-open state and the liquid level control valve is in a full-closed state;
the liquid level shunt check is a control oil way when the liquid level control valve is in a full-open state and the pressure control valve is in a full-closed state.
The synchronous verification of the pressure and the liquid level is that the pressure control valve and the liquid level control valve are in a full-open state.
The device can realize six mode verification functions of pressure shunt verification in an external pressurizing mode, liquid level shunt verification in the external pressurizing mode, liquid level and pressure synchronous verification in the external pressurizing mode, liquid level shunt verification in a pressurizing mode of a hydraulic system, pressure shunt verification in the pressurizing mode of the hydraulic system and pressure and liquid level synchronous verification in the pressurizing mode of the hydraulic system, and the embodiment is as follows:
example 1, first mode: pressure shunt verification in external pressurization mode
Working conditions: closing a lower oil passing valve and an upper oil passing valve, connecting a pressurizing pump connector with a pump output port of a pressurizing pump control device, and opening a pressurizing pump control valve; meanwhile, the pressure control valve is in a full-open state, the liquid level control valve is in a control oil way in a full-closed state, and the oil pressure is controlled and output through the pressure pump control device. Under the working condition, the oil path of the system is in the trend of oil of the pressurizing control device from the pressurizing pump output port of the pressurizing control device to the pressurizing pump control valve, and after passing through the pressurizing measurement pipeline, the oil path passes through the pressure control valve of the pressure measurement pipeline, and at the moment, the oil path does not pass through the liquid level control valve of the liquid level measuring pipe and the lower oil passing valve of the lower oil passing pipe; the pressure is output to the front valve of the upper meter of the distribution pipe after passing through the pressure measuring pipeline, and then enters the pressure sensor, the mechanical pressure meter and the pressure switch, so that the pressure switch and the pressure sensor are set on line.
Working principle: firstly, a pressurizing pump control device is started, different oil pressures are output manually or automatically, and under the working condition, an oil pressure output value is output to an automatic measuring element of the oil tank according to an oil path of the automatic measuring element, so that the setting value of the automatic measuring element is checked on line. The pressure sensor and the mechanical pressure gauge display the pressure value output by the pressurizing pump control device in the control box in real time so as to check the linearity of the output; if the linearity of the pressure sensor is inconsistent with that of the mechanical pressure gauge, checking a control loop or replacing the sensor in time to ensure that the output value of the pressure sensor is consistent with the actual pressure value. When the pressure reaches the set pressure value, the corresponding pressure opening joint point will act to send out a corresponding action signal, otherwise, the pressure switch node nut is regulated in a rough regulation and fine regulation mode, so that the pressure switch is ensured to act or reset within the allowable error range of the setting value.
Example 2, second mode: liquid level shunt verification in external pressurization mode
Working conditions: closing a lower oil passing valve and an upper oil passing valve, connecting a pressurizing pump connector with a pump output port of a pressurizing pump control device, and opening a pressurizing pump control valve; meanwhile, the pressure control valve is in a fully closed state, the liquid level control valve is in a fully opened state to control an oil way, and the oil pressure is controlled and output through the pressure pump control device. Under the working condition, the oil path of the system is in the trend of oil of the pressurizing control device from the pressurizing pump output port of the pressurizing control device to the pressurizing pump control valve, passes through the pressurizing measuring pipeline and then enters the liquid level control valve of the liquid level measuring pipeline, and at the moment, the oil path does not pass through the pressure control valve of the pressure measuring pipe and the lower oil valve of the lower oil pipe; the liquid level is output to the magnetic flap liquid level meter after passing through the liquid level measuring pipeline, and then enters the liquid level meter internal pipeline to enable the liquid level meter to be adjusted on line and the magnetic switch.
Working principle: firstly, a pressurizing pump control device is started, different oil pressures are output manually or automatically, and under the working condition, an oil output value is magnetically turned over to a plate liquid level meter according to an oil way so as to check a setting value on line. The liquid level meter data display the liquid level value in real time in the control box so as to check the linearity of the output of the liquid level meter data; if the linearity of the liquid level meter is inconsistent, checking a control loop or replacing a sensor in time to ensure that the output value of the sensor is consistent with the actual liquid level value. When the liquid level reaches the set liquid level value, the corresponding magnetic switch joint point will act to send out corresponding action signals, otherwise, the magnetic switch is ensured to act or reset within the allowable error range of the setting value by means of the position of the magnetic switch joint point.
Example 3, third mode: synchronous verification of liquid level and pressure in external pressurization mode
The synchronous verification conditions of the liquid level and the pressure in the external pressurizing mode are that a pressurizing pump control valve is opened, a lower oil passing valve and an upper oil passing valve are closed, and a pressurizing pump connector is connected with a pump output port of a pressurizing pump control device; meanwhile, the pressure control valve and the liquid level control valve are in a control oil way in a full-open state, and the oil pressure is controlled and output through the pressurizing pump control device. Under the working condition, the system oil way is that oil of the pressurizing control device is pressurized from an output port of a pressurizing pump of the pressurizing control device to a control valve of the pressurizing pump, passes through a pressurizing measuring pipeline, and then passes through a liquid level control valve of the liquid level measuring pipeline and a pressure control valve of a pressure measuring pipe without passing through a lower oil valve of a lower oil pipe; the liquid level is output to the magnetic flap liquid level meter after passing through the liquid level measuring pipeline, and then enters the liquid level meter internal pipeline to enable the liquid level meter to be set on line and the magnetic switch; the pressure is output to the front valve of the upper meter of the distribution pipe after passing through the pressure measuring pipeline, and then enters the pressure sensor, the mechanical pressure meter and the pressure switch, so that the pressure switch and the pressure sensor are set on line.
Working principle: firstly, a pressurizing pump control device is started, different oil pressures are output manually or automatically, and under the working condition, an oil output value is obtained according to an oil way of the pressurizing pump control device, so that a setting value of the pressurizing pump control device is checked on line by a magnetic flap liquid level meter, a pressure sensor, a mechanical pressure meter and a pressure switch. The liquid level meter data and the pressure value are displayed in the control box in real time so as to check the linearity of the output of the liquid level meter data and the pressure value; if the linearity of the liquid level meter or the pressure sensor is not consistent, the control loop is checked or the sensor is replaced in time for processing so as to ensure that the output value of the sensor is consistent with the actual value. When the liquid level reaches the set liquid level value, the corresponding magnetic switch joint point will act to send out corresponding action signals, otherwise, the magnetic switch is ensured to act or reset within the allowable error range of the setting value by means of the position of the magnetic switch joint point. When the pressure reaches the set pressure value, the corresponding pressure opening joint point will act to send out a corresponding action signal, otherwise, the pressure switch node nut is regulated in a rough regulation and fine regulation mode, so that the pressure switch is ensured to act or reset within the allowable error range of the setting value.
Example 4, fourth mode: liquid level shunt check for pressurization mode of hydraulic system
The liquid level shunt check condition of the pressurizing mode of the hydraulic system is that a pressurizing pump control valve is closed, and a pressurizing pump connector is disconnected with a pump output port of a pressurizing pump control device; opening a lower oil passing valve and an upper oil passing valve; meanwhile, when the liquid level control valve is in a fully-opened state, the pressure control valve is in a fully-closed state, and the oil pressure is operated and controlled through an oil pump control cabinet of the speed regulator hydraulic system and is output. Under the working condition, the trend of the system oil way is that the oil of the pressure oil tank passes through the lower oil valve of the lower oil pipe to the liquid level control valve of the liquid level measuring pipe, and then enters the liquid level meter. The oil passage from the lower oil passing valve to the pressure control valve of the pressure measurement pipe and between the pressure control valve of the pressure measurement pipe is not communicated.
Working principle: firstly, a hydraulic system control cabinet increases the pressure and the liquid level of a hydraulic system in an oil pump loading mode or an air supplementing mode; the oil pressure and the oil level of the hydraulic system can be reduced by a manual oil discharging and exhausting mode or a guide vane operating mode. Performing liquid level verification according to the trend of the oil way under the working condition, displaying real-time data by a corresponding liquid level meter when the liquid level reaches a set liquid level value, and checking a control loop or replacing a sensor in time to process if the linearity of a sensor of the liquid level meter is inconsistent, so as to ensure that the output value of the sensor is consistent with the actual value; the corresponding magnetic switch node will act to send out corresponding action signal, otherwise, the magnetic switch will be ensured to act or reset within the allowable error range of the setting value by means of the position of the magnetic switch node.
Example 5, fifth mode: pressure shunt check for pressurized mode of hydraulic system
The pressure shunt check condition of the pressurizing mode of the hydraulic system is that a pressurizing pump control valve is closed, and a pressurizing pump connector is disconnected with a pump output port of a pressurizing pump control device; opening a lower oil passing valve and an upper oil passing valve; meanwhile, when the liquid level control valve is in a fully closed state, the pressure control valve is in a fully opened state, and the oil pressure is controlled and output through an oil pump control cabinet of a speed regulator hydraulic system. Under the working condition, the system oil way trend is that the oil of the pressure oil tank passes through the lower oil valve of the lower oil pipe to the pressure control valve of the pressure measuring pipe, and then enters the front valve of the meter of the distribution pipe, the pressure switch and the pressure sensor. The oil way from the lower oil passing valve to the liquid level control valve of the liquid level measuring tube and between the lower oil passing valve and the pressurizing control valve of the pressurizing measuring tube is not communicated.
Working principle: firstly, a hydraulic system control cabinet increases the pressure and the liquid level of a hydraulic system in an oil pump loading mode or an air supplementing mode; the oil pressure and the oil level of the hydraulic system can be reduced by a manual oil discharging and exhausting mode or a guide vane operating mode. Performing liquid level verification according to the trend of the oil line under the working condition, displaying real-time data by the corresponding pressure sensor when the pressure reaches a set pressure value, and checking a control loop or replacing the sensor to process in time if the linearity of the pressure sensor is inconsistent, so as to ensure that the output value of the sensor is consistent with the actual value; the corresponding pressure switch node will act to send out corresponding action signals, otherwise, the pressure switch will be ensured to act or reset within the allowable error range of the setting value by means of the pressure switch node.
Example 6, sixth mode: synchronous verification of pressure and liquid level of pressurization mode of hydraulic system
The synchronous checking conditions of the pressure and the liquid level of the pressurizing mode of the hydraulic system are that a control valve of a pressurizing pump is closed, and a lower oil passing valve and an upper oil passing valve are opened; meanwhile, in a control oil way in which the liquid level control valve and the pressure control valve are in a full-open state, the pressurizing pump connector is disconnected with a pump output port of the pressurizing pump control device, and oil pressure is controlled and output through an oil pump control cabinet of a speed regulator hydraulic system. Under the working condition, the trend of the system oil way is that oil of the pressure oil tank passes through the lower oil valve of the lower oil pipe to the pressure control valve of the pressure measuring pipe and the liquid level control valve of the liquid level measuring pipe, and then enters the front valve of the meter, the liquid level meter, the pressure switch and the pressure sensor of the distribution pipe. The oil passage from the lower oil passing valve to the pressurizing control valve of the pressurizing measuring tube is not communicated.
Working principle: firstly, a hydraulic system control cabinet increases the pressure and the liquid level of a hydraulic system in an oil pump loading mode or an air supplementing mode; the oil pressure and the oil level of the hydraulic system can be reduced by a manual oil discharging and exhausting mode or a guide vane operating mode. Performing liquid level verification according to the trend of the oil line under the working condition, and displaying real-time data by the corresponding pressure sensor and the corresponding liquid level meter when the liquid level and the pressure reach the set liquid level value; if the linearity of the liquid level meter is inconsistent with that of the pressure sensor, checking a control loop or replacing the sensor in time to ensure that the output value of the sensor is consistent with the actual value; the corresponding magnetic switch node and the corresponding pressure switch will act to send out corresponding action signals, otherwise, the magnetic switch is ensured to act or reset within the allowable error range of the setting value by means of the positions of the magnetic switch and the pressure switch node.
The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (9)
1. The utility model provides a power station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter calibration equipment, includes upper oil pipe (2) that are connected with pressure oil tank (1) upper end and lower oil pipe (3) that are connected with pressure oil tank (1) lower extreme, its characterized in that: go up logical oil pipe (2) one end and be connected with liquid level gauge (14) upside, down lead to oil pipe (3) one end and be connected with pressurization survey pipe (15) one end, pressure survey pipe (16) one end and liquid level survey pipe (17) one end respectively, the liquid level survey pipe (17) other end is connected with liquid level gauge (14) downside, the pressurization survey pipe (15) other end is connected with pressure controlling means (10), the pressure survey pipe (16) other end is connected with distribution pipe (18) input, and distribution pipe (18) output is connected with pressure measuring means, go up logical oil pipe (2), down lead to oil pipe (3), pressurization survey pipe (15), all be equipped with the valve on pressure survey pipe (16) and liquid level survey pipe (17).
2. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: the pressurizing control device (10) comprises an oil pump and a control box (20) connected with the control end of the oil pump, moving wheels (27) are arranged at the bottom of the control box (20), radiating fans (26) are arranged on two sides of the control box (20), an indicator lamp (21), a touch screen (22), a button (23), a switching handle (24) and a door lock (25) are arranged on the front cabinet door of the control box (20), and lifting lugs (28) are arranged at the top of the control box (20).
3. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: an upper oil passing valve (4) is arranged on the upper oil passing pipe (2).
4. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: the lower oil pipe (3) is provided with a lower oil valve (5).
5. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: the pressurizing measuring tube (15) is provided with a pressurizing control valve (8), and the input end of the pressurizing measuring tube (15) is connected with an oil outlet of an oil pump of the pressurizing control device (10) through a pressurizing pump connector (9).
6. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: the pressure measuring tube (16) is provided with a pressure control valve (7).
7. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: the liquid level measuring pipe (17) is provided with a liquid level control valve (6).
8. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: the pressure measuring device comprises a pressure sensor (11), a mechanical pressure gauge (13), a pressure switch (12) and a front valve (19).
9. The hydropower station speed regulator hydraulic system pressure oil tank pressure and liquid level parameter verification device according to claim 1, wherein: the liquid level meter (14) is a magnetic flap liquid level meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321163431.0U CN219795754U (en) | 2023-05-15 | 2023-05-15 | Pressure oil tank pressure and liquid level parameter checking device of hydraulic system of hydropower station speed regulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321163431.0U CN219795754U (en) | 2023-05-15 | 2023-05-15 | Pressure oil tank pressure and liquid level parameter checking device of hydraulic system of hydropower station speed regulator |
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| Publication Number | Publication Date |
|---|---|
| CN219795754U true CN219795754U (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321163431.0U Active CN219795754U (en) | 2023-05-15 | 2023-05-15 | Pressure oil tank pressure and liquid level parameter checking device of hydraulic system of hydropower station speed regulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN219795754U (en) |
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2023
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