CN110725829A - Hydraulic mechanism oil level monitoring device - Google Patents
Hydraulic mechanism oil level monitoring device Download PDFInfo
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- CN110725829A CN110725829A CN201911161459.9A CN201911161459A CN110725829A CN 110725829 A CN110725829 A CN 110725829A CN 201911161459 A CN201911161459 A CN 201911161459A CN 110725829 A CN110725829 A CN 110725829A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/0007—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring
- G01F23/0015—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring with a whistle or other sonorous signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/80—Arrangements for signal processing
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Signal Processing (AREA)
- Fluid-Pressure Circuits (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
Abstract
The invention discloses an oil level monitoring device of a hydraulic mechanism, which can ensure that internal leakage and decompression of the hydraulic mechanism can be found or eliminated in time, improve the safety and stability of the operation of a circuit breaker and ensure the reliable power supply of a power grid. The oil level sensor comprises an oil level sensor for detecting and feeding back liquid level information, an indicator light for alarming when the oil level is reduced, a one-way check valve for communicating a filtering component with an oil tank, a pipeline for communicating each oil way, and a filtering component for filtering impurity oil; the oil level sensor is fixed on the inner wall of the oil tank and outputs a linear resistor of 0-190 ohms according to the height of the oil level; the oil level sensor also comprises an analog-to-digital conversion unit, wherein the analog-to-digital conversion unit comprises a voltage division circuit and an analog-to-digital converter, converts the resistor output by the oil level sensor into a voltage signal and then converts the voltage signal into a digital signal for receiving by the data processing unit; the system also comprises a data processing and control unit and a data communication unit.
Description
Technical Field
The invention relates to an oil tank level monitoring device of a hydraulic mechanism, which is particularly used for monitoring and filtering oil in an oil tank of a circuit breaker.
Background
The hydraulic mechanism circuit breaker has the characteristics of stable operation, reliable action, capability of operating when the mechanism is temporarily powered off and the like, so that the hydraulic mechanism circuit breaker is widely applied to an electric power system. However, the hydraulic mechanism circuit breaker can have the phenomena of aging and damage of sealing gaskets in different degrees, more impurities in hydraulic oil and the like along with the increase of service life, so that the leakage phenomenon of the hydraulic mechanism occurs, the pressure cannot be reduced due to insufficient hydraulic oil, the circuit breaker fails to operate in severe cases, and the safe and stable operation of the circuit breaker is affected, so that the hydraulic mechanism needs to be regularly subjected to patrol, the oil level is ensured to be normal, meanwhile, the hydraulic oil is filtered, and the impurities in the oil are filtered.
As the service life of the hydraulic mechanism breaker is prolonged, the sealing gaskets of different degrees are aged, damaged, hydraulic oil impurities and the like, so that the hydraulic mechanism leaks oil, and when the hydraulic oil is insufficient, the pressure cannot be reduced, so that the hydraulic mechanism needs to be regularly subjected to patrol to ensure that the oil level is normal; most of the internal leakage is caused by the fact that hydraulic oil contains impurities, so that the valve body is not sealed tightly, and if the oil level can be monitored in time and the hydraulic oil can be purified, the defects of internal leakage and pressure loss of the hydraulic mechanism can be discovered or eliminated in time; meanwhile, oil level detection and oil sample treatment of the hydraulic mechanism are mainly completed manually by means of regular inspection at the present stage, but the method cannot guarantee timely discovery or elimination of internal seepage and decompression of the hydraulic mechanism, and the safety of a power grid is seriously threatened.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a hydraulic mechanism oil level monitoring device aiming at the defects in the prior art, which can ensure that internal leakage and pressure loss of a hydraulic mechanism can be found or eliminated in time, improve the safety and stability of the operation of a circuit breaker and ensure the reliable power supply of a power grid.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the hydraulic mechanism oil level monitoring device is used for monitoring and filtering oil liquid of an oil tank of the hydraulic mechanism; the oil level sensor is used for detecting and feeding back liquid level information, the indicating lamp is used for alarming when the oil level is reduced, the one-way check valve is used for communicating the filtering component with the oil tank, the pipeline is used for communicating each oil way, and the filtering component is used for filtering impurity oil;
the oil level sensor is fixed on the inner wall of the oil tank and outputs a linear resistor of 0-190 ohms according to the height of the oil level;
the oil level sensor also comprises an analog-to-digital conversion unit, wherein the analog-to-digital conversion unit comprises a voltage division circuit and an analog-to-digital converter, converts the resistor output by the oil level sensor into a voltage signal and then converts the voltage signal into a digital signal for receiving by the data processing unit;
the oil level monitoring device also comprises a data processing and controlling unit, wherein the data processing and controlling unit acquires digital information from the analog-to-digital conversion unit, calculates the height of the oil level according to the digital information, compares the oil level with a standard oil level value embedded in the oil level, and outputs an alarm instruction if the comparison result is less than or equal to a set alarm value, and the oil filtering assembly stops working at the same time;
still contain the data communication unit, the data communication unit passes through the communication protocol with the oil level information that data processing and the control unit calculated and transmits the computer that is used for the remote monitoring of circuit breaker hydraulic pressure mechanism oil level to the LAN.
As a preferred embodiment of the present invention: the oil level alarm is used for alarming when the oil level is reduced to a set value; contains a red flashing LED lamp and a buzzer, and the power supply is DC 220V.
As a preferred embodiment of the present invention: the one-way check valve is used for communicating the filtering component and the oil tank.
As a preferred embodiment of the present invention: the filter assembly is arranged at the bottom of the hydraulic mechanism and is lower than the oil tank; the oil pumping unit and the oil filter are arranged in the filtering component, and the oil pumping unit is connected with the oil storage tank.
As a preferred embodiment of the present invention: the oil filter is an YL-7 hydraulic oil filter, and the filtering precision is as follows: 10 um; maximum flow rate: 10L/min.
As a preferred embodiment of the present invention: the power supply module is used for supplying power; the power supply module is a DC220V power supply.
As a preferred embodiment of the present invention: also comprises an oil storage tank and an oil pump; the oil storage tank is provided with a three-way valve with a one-way check at one side, the oil storage tank is connected with an oil pump of the hydraulic mechanism at one side, one end of the three-way valve is connected with the oil pump of the hydraulic mechanism, the other end of the three-way valve is connected with a filtering component, a single check valve is arranged between the filtering component and the three-way valve, the oil outlet of the filtering component is communicated with the oil filling port at the top of the oil tank of the hydraulic mechanism, a USB interface of a data communication unit is connected to a networked computer, and the IP address of a target computer is input on application software matched with the device, so that the.
The invention has the beneficial effects that:
the oil level monitoring device of the hydraulic mechanism disclosed by the invention can realize the filtering of the hydraulic oil of the circuit breaker, filter impurities in the oil, prevent internal infiltration caused by the impurities in the hydraulic oil and simplify the complicated procedure of the hydraulic oil filtering work; the device can real-time supervision oil level to realize remote transmission, the fortune dimension personnel just can browse the hydraulic pressure mechanism circuit breaker oil level condition before the computer, improve fortune dimension personnel work efficiency, can guarantee in time to discover or eliminate hydraulic pressure mechanism internal leakage, decompression, improve the safety and stability of circuit breaker operation, guarantee the reliable power supply of electric wire netting.
The invention can replace manual inspection and oil sample filtration, can realize the filtration of the hydraulic oil of the circuit breaker, filter impurities in the oil, ensure the good oil quality, prevent the internal leakage caused by the impurities in the hydraulic oil, and simplify the complicated procedures of the hydraulic oil filtration work.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic block diagram of the structure of an embodiment of the present invention.
Description of reference numerals:
1-oil level sensor, 2-indicator light, 3-one-way check valve, 4-pipeline, 5-filtering component.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
as shown in fig. 1-2, which illustrate an embodiment of the present invention, an oil level monitoring device for a hydraulic mechanism is used for monitoring and filtering oil in an oil tank of the hydraulic mechanism; the oil level sensor comprises an oil level sensor 1 for detecting and feeding back liquid level information, an indicator lamp 2 for alarming when the oil level is reduced, a one-way check valve 3 for communicating a filtering component and an oil tank, a pipeline 4 for communicating each oil way, and a filtering component 5 for filtering impurity oil;
the oil level sensor is fixed on the inner wall of the oil tank and outputs a linear resistor of 0-190 ohms according to the height of the oil level;
the oil level sensor also comprises an analog-to-digital conversion unit, wherein the analog-to-digital conversion unit comprises a voltage division circuit and an analog-to-digital converter, converts the resistor output by the oil level sensor into a voltage signal and then converts the voltage signal into a digital signal for receiving by the data processing unit;
the oil level monitoring device also comprises a data processing and controlling unit, wherein the data processing and controlling unit acquires digital information from the analog-to-digital conversion unit, calculates the height of the oil level according to the digital information, compares the oil level with a standard oil level value embedded in the oil level, and outputs an alarm instruction if the comparison result is less than or equal to a set alarm value, and the oil filtering assembly stops working at the same time;
still contain the data communication unit, the data communication unit passes through the communication protocol with the oil level information that data processing and the control unit calculated and transmits the computer that is used for the remote monitoring of circuit breaker hydraulic pressure mechanism oil level to the LAN.
Preferably, as shown in the figure: the oil level alarm is used for alarming when the oil level is reduced to a set value; contains a red flashing LED lamp and a buzzer, and the power supply is DC 220V. Preferably, as shown in the figure: the one-way check valve is used for communicating the filtering component and the oil tank. Preferably, as shown in the figure: the filter assembly is arranged at the bottom of the hydraulic mechanism and is lower than the oil tank; the oil pumping unit and the oil filter are arranged in the filtering component, and the oil pumping unit is connected with the oil storage tank. Preferably, as shown in the figure: the oil filter is an YL-7 hydraulic oil filter, and the filtering precision is as follows: 10 um; maximum flow rate: 10L/min. Preferably, as shown in the figure: the power supply module is used for supplying power; the power supply module is a DC220V power supply. Preferably, as shown in the figure: also comprises an oil storage tank and an oil pump; the oil storage tank is provided with a three-way valve with a one-way check at one side, the oil storage tank is connected with an oil pump of the hydraulic mechanism at one side, one end of the three-way valve is connected with the oil pump of the hydraulic mechanism, the other end of the three-way valve is connected with a filtering component, a single check valve is arranged between the filtering component and the three-way valve, the oil outlet of the filtering component is communicated with the oil filling port at the top of the oil tank of the hydraulic mechanism, a USB interface of a data communication unit is connected to a networked computer, and the IP address of a target computer is input on application software matched with the device, so that the.
The oil level monitoring device of the hydraulic mechanism disclosed by the invention can be used for filtering hydraulic oil of a circuit breaker, filtering impurities in the oil, preventing internal infiltration caused by the impurities in the hydraulic oil and simplifying the complicated procedure of the hydraulic oil filtering work; the device can real-time supervision oil level to realize remote transmission, the fortune dimension personnel just can browse the hydraulic pressure mechanism circuit breaker oil level condition before the computer, improve fortune dimension personnel work efficiency, can guarantee in time to discover or eliminate hydraulic pressure mechanism internal leakage, decompression, improve the safety and stability of circuit breaker operation, guarantee the reliable power supply of electric wire netting.
The oil level sensor comprises an oil level sensor 1 for detecting and feeding back liquid level information, an indicator lamp 2 for alarming when the oil level is lowered, a one-way check valve 3 for communicating a filtering component with an oil tank, a pipeline 4 for communicating each oil way, a filtering component 5 for filtering impurity oil and other hardware.
The device mainly comprises an oil level sensor 1, an analog-to-digital conversion unit, a data processing and control unit, a data communication unit, an oil level alarm, a hydraulic oil filtering component 5, a one-way check valve 3, a power module and the like.
Wherein the content of the first and second substances,
oil level sensor 1: the sensor outputs 0-190 ohm linear resistance according to the height of the oil level, and the linear resistance is the key for realizing the linear monitoring of the oil level. The oil level sensor is fixed on the inner wall of the oil tank and floats the variable resistance.
An analog-to-digital conversion unit: the oil level sensor is mainly composed of a voltage division circuit and an analog-to-digital converter, and the resistor output by the oil level sensor is converted into a voltage signal and further converted into a digital signal for being received by a data processing unit.
The data processing and control unit: the part obtains digital information from the analog-to-digital conversion unit, calculates the height of the oil level according to the information, compares the oil level with an embedded oil level value, and outputs an alarm instruction if the comparison result is less than or equal to a set alarm value, and the oil filtering device stops working at the same time.
A data communication unit: the unit transmits the oil level information calculated by the data processing unit to a formulating computer of a local area network through a certain communication protocol, and the computer can realize the remote real-time monitoring of the oil level of the hydraulic mechanism of the circuit breaker.
An oil level alarm: and an alarm for alarming when the oil level is lowered to a set value. Red flashing, beeping, power DC220V
One-way check valve 3: and the one-way check valve is used for communicating the filtering component with the oil tank.
Hydraulic oil filter component 5: and the filter assembly is used for filtering the impurity oil. The filter assembly may be mounted at the bottom of the mechanism housing, slightly below the reservoir. Built-in miniature beam-pumping unit and high accuracy oil filter YL-7 hydraulic oil filter, the filter fineness: 10 um; maximum flow rate: 10L/min.
A power supply module: the part mainly provides a power supply with small ripple factor, small harmonic wave and stable output for each unit, and provides guarantee for the stable operation of each unit. A station DC220V power supply is used.
The invention needs to install the oil level sensor in the oil tank of the hydraulic mechanism of the circuit breaker, the connecting pipe of the oil storage tank and the oil pump is provided with a three-way valve with one-way check on one side, one end is connected with the oil pump of the hydraulic mechanism, the other end is connected with the filter assembly, a single check valve is arranged between the filter assembly and the three-way valve, the oil outlet of the filter assembly is communicated with the oil filling port at the top of the oil tank of the hydraulic mechanism, the USB interface of the device needs to be connected to a computer which is connected with the network, and the IP address of a target computer is input on application software matched with the device, so that the oil level and the oil filtering condition of. If the device sends an oil level low alarm signal, need carry out the oiling to circuit breaker hydraulic pressure mechanism, the oil strain subassembly stops, then carries out the oiling at the oil tank oiling mouth, when the oil level reached with embedded "oil level value" unanimity, sends the signal that the oil level was adjusted and finishes, reminds the staff to stop the oiling. The oil level sensor is required to be installed in an oil tank of a hydraulic mechanism of the circuit breaker, the oil level sensor is connected with a digital-to-analog conversion unit circuit in a filtering device, a data processing unit used for comparing a monitoring signal with a preset signal is connected behind the analog-to-digital conversion unit, a data communication unit used for remote communication and a control execution unit used for controlling a one-way electromagnetic valve are respectively connected behind the data processing unit, the control execution unit is connected between the oil pump and the filtering device in series, and the analog-to-digital conversion unit, the data processing unit and the control execution unit are all connected with a power module circuit.
While the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes, which relate to the related art known to those skilled in the art and fall within the scope of the present invention, can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (7)
1. The hydraulic mechanism oil level monitoring device is used for monitoring and filtering oil liquid of an oil tank of the hydraulic mechanism; the method is characterized in that: the oil level sensor is used for detecting and feeding back liquid level information, the indicating lamp is used for alarming when the oil level is reduced, the one-way check valve is used for communicating the filtering component with the oil tank, the pipeline is used for communicating each oil way, and the filtering component is used for filtering impurity oil;
the oil level sensor is fixed on the inner wall of the oil tank and outputs a linear resistor of 0-190 ohms according to the height of the oil level;
the oil level sensor also comprises an analog-to-digital conversion unit, wherein the analog-to-digital conversion unit comprises a voltage division circuit and an analog-to-digital converter, converts the resistor output by the oil level sensor into a voltage signal and then converts the voltage signal into a digital signal for receiving by the data processing unit;
the oil level monitoring device also comprises a data processing and controlling unit, wherein the data processing and controlling unit acquires digital information from the analog-to-digital conversion unit, calculates the height of the oil level according to the digital information, compares the oil level with a standard oil level value embedded in the oil level, and outputs an alarm instruction if the comparison result is less than or equal to a set alarm value, and the oil filtering assembly stops working at the same time;
still contain the data communication unit, the data communication unit passes through the communication protocol with the oil level information that data processing and the control unit calculated and transmits the computer that is used for the remote monitoring of circuit breaker hydraulic pressure mechanism oil level to the LAN.
2. The hydraulic-mechanism oil-level monitoring device according to claim 1, characterized in that: the oil level alarm is used for alarming when the oil level is reduced to a set value; contains a red flashing LED lamp and a buzzer, and the power supply is DC 220V.
3. The hydraulic-mechanism oil-level monitoring device according to claim 1, characterized in that: the one-way check valve is used for communicating the filtering component and the oil tank.
4. The hydraulic-mechanism oil-level monitoring device according to claim 1, characterized in that: the filter assembly is arranged at the bottom of the hydraulic mechanism and is lower than the oil tank; the oil pumping unit and the oil filter are arranged in the filtering component, and the oil pumping unit is connected with the oil storage tank.
5. The hydraulic-mechanism oil-level monitoring device according to claim 4, characterized in that: the oil filter is an YL-7 hydraulic oil filter, and the filtering precision is as follows: 10 um; maximum flow rate: 10L/min.
6. The hydraulic-mechanism oil-level monitoring device according to claim 1, characterized in that: the power supply module is used for supplying power; the power supply module is a DC220V power supply.
7. The hydraulic-mechanism oil-level monitoring device according to claim 1, characterized in that: also comprises an oil storage tank and an oil pump; the oil storage tank is provided with a three-way valve with a one-way check at one side, the oil storage tank is connected with an oil pump of the hydraulic mechanism at one side, one end of the three-way valve is connected with the oil pump of the hydraulic mechanism, the other end of the three-way valve is connected with a filtering component, a single check valve is arranged between the filtering component and the three-way valve, the oil outlet of the filtering component is communicated with the oil filling port at the top of the oil tank of the hydraulic mechanism, a USB interface of a data communication unit is connected to a networked computer, and the IP address of a target computer is input on application software matched with the device, so that the.
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| CN201911161459.9A CN110725829A (en) | 2019-11-24 | 2019-11-24 | Hydraulic mechanism oil level monitoring device |
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| CN201911161459.9A CN110725829A (en) | 2019-11-24 | 2019-11-24 | Hydraulic mechanism oil level monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345028A (en) * | 2020-10-30 | 2021-02-09 | 中国航空工业集团公司西安航空计算技术研究所 | Multichannel capacitive liquid level sensor signal processing system and method |
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| CN205318237U (en) * | 2015-12-02 | 2016-06-15 | 国网新疆电力公司乌鲁木齐供电公司 | Monitoring of transformer oil position and intelligent regulation device |
| CN109915438A (en) * | 2019-04-02 | 2019-06-21 | 山东航天电子技术研究所 | A kind of oil tank of excavating machine filling hydraulic oil oil filtering system and method |
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2019
- 2019-11-24 CN CN201911161459.9A patent/CN110725829A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205318237U (en) * | 2015-12-02 | 2016-06-15 | 国网新疆电力公司乌鲁木齐供电公司 | Monitoring of transformer oil position and intelligent regulation device |
| CN109915438A (en) * | 2019-04-02 | 2019-06-21 | 山东航天电子技术研究所 | A kind of oil tank of excavating machine filling hydraulic oil oil filtering system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112345028A (en) * | 2020-10-30 | 2021-02-09 | 中国航空工业集团公司西安航空计算技术研究所 | Multichannel capacitive liquid level sensor signal processing system and method |
| CN112345028B (en) * | 2020-10-30 | 2024-05-14 | 中国航空工业集团公司西安航空计算技术研究所 | Multichannel capacitive liquid level sensor signal processing system and method |
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