CN112485036B - Oil mist generating device for testing - Google Patents
Oil mist generating device for testing Download PDFInfo
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- CN112485036B CN112485036B CN202011448294.6A CN202011448294A CN112485036B CN 112485036 B CN112485036 B CN 112485036B CN 202011448294 A CN202011448294 A CN 202011448294A CN 112485036 B CN112485036 B CN 112485036B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
Abstract
The invention discloses an oil mist generating device for testing, which comprises an oil mist generating unit, a data monitoring unit, a data processing unit and a console, wherein the oil mist generating unit and the data monitoring unit are arranged to simulate oil mist with controllable pressure and flow generated corresponding to production working conditions, the data monitoring unit is used for collecting various parameters, a chart curve is drawn by the console to carry out visual display and comparison, so that the main parameters of pressure drop performance, flow and the like of an oil mist separator in subsequent working procedures are displayed and contrastively analyzed in real time, data support is provided for the working capacity of the oil mist separator, the data processing unit is arranged to carry out comprehensive calculation and analysis by utilizing various pressure data and flow data, so that an air input pipe, a first oil mist conveying pipe and a second oil mist conveying pipe are detected, the leakage and the blockage of the pipelines are found in time, and workers are informed to carry out inspection and maintenance, the performance and the service life of the product are improved, and the safety performance of the device is enhanced.
Description
Technical Field
The invention relates to an oil mist generating device, in particular to an oil mist generating device for testing.
Background
In the modern processing process, oil materials are often evaporated or enter a production environment along with air flow due to heating of production equipment, and oil mist similar to the field use working condition needs to be artificially produced when the pressure drop and the flow of the oil mist separator are detected;
the device in the prior art is a smoke generating device which is based on mechanical hardware such as an ejector, a heater, a box body and the like, is added with various sensors for signal collection, and is recorded and drawn by a central console computer. By comparing all parameters (curves) at any moment, the main parameters such as the pressure drop performance, the flow and the like of the oil mist separator can be conveniently, visually and accurately displayed. However, if leakage and blockage occur in the oil mist generating device, people cannot quickly detect the leakage and blockage, and flow measurement data are inaccurate.
Disclosure of Invention
The invention aims to provide an oil mist generating device for testing, which simulates oil mist with controllable pressure and flow generated corresponding to production working conditions by arranging an oil mist generating unit and a data monitoring unit, acquires various parameters by using the data monitoring unit, and visually displays and contrasts by drawing a graph curve through a control console, so that the main parameters of pressure drop performance, flow and the like of an oil mist separator in subsequent procedures are displayed, contrastively analyzed in real time, data support is provided for the working capacity of the oil mist separator, the persuasive force of the product performance is enhanced, comprehensive calculation and analysis are performed by using various pressure data and flow data by arranging a data processing unit, so that an air input pipe, a first oil mist conveying pipe and a second oil mist conveying pipe are detected, the leakage and the blockage of the pipelines are found in time, and workers are informed to carry out inspection and maintenance, the test precision of the product is ensured, the performance and the service life of the product are improved, and the safety performance of the device is enhanced.
The technical problem solved by the invention is as follows:
(1) the control console obtains air pressure data, oil mist pressure data, air flow data, oil mist regulation flow data and oil mist delivery flow data in each moment from the data processing unit, a rectangular coordinate system is established for each type of data, the moment is taken as an X axis, the pressure or the flow is taken as a Y axis, corresponding data of each moment are marked in the rectangular coordinate system and are sequentially connected to obtain pressure-moment curves or flow-moment curves of various types of data, the oil mist generating unit and the data monitoring unit are arranged to simulate oil mist with controllable pressure and flow generated corresponding to production working conditions, the data monitoring unit is used for collecting each parameter, the chart curves are drawn by the control console for visual display and comparison, and therefore the display and comparative analysis of main parameters such as pressure drop performance, flow and the like of the oil mist separator in subsequent working procedures are realized in real time, data support is provided for the working capacity of the oil mist separator, and persuasion of product performance is enhanced;
(2) the data processing unit receives the air pressure data, the oil mist pressure data, the oil temperature data and the oil level liquid level data, analyzes and judges the obtained air leakage signal and the air blockage signal and transmits the obtained positive adjustment signal, negative adjustment signal, temperature rise signal, temperature reduction signal, opening signal, closing signal and low liquid level signal to the alarm unit, the data processing unit further performs pipeline sealing analysis on the received air flow data, oil mist regulation flow data and oil mist delivery flow data to obtain an oil mist blockage signal and an oil mist leakage signal and transmits the oil mist blockage signal and the oil mist leakage signal to the alarm unit, the alarm unit receives the air leakage signal, the air blockage signal, the oil mist leakage signal and the oil mist blockage signal and identifies the oil mist blockage signal, the buzzer is started to alarm, and corresponding voice prompt broadcast is performed at the same time, remind the staff to maintain the air input pipe, first oil mist conveyer pipe and second oil mist conveyer pipe, through setting up data processing unit, utilize all kinds of pressure data and flow data to carry out comprehensive calculation and analysis, thereby to the air input pipe, first oil mist conveyer pipe and second oil mist conveyer pipe detect, in time discover that the pipeline leaks and blocks up and inform the staff to inspect the maintenance, the measuring accuracy of product has been guaranteed, the performance and the life of product have been improved, the security performance of device has been strengthened.
The purpose of the invention can be realized by the following technical scheme: an oil mist generating device for testing comprises an air conveying unit, an oil mist generating unit, a data monitoring unit, a data processing unit, an alarm unit, a console and a data storage unit;
the air conveying unit comprises an air compressor, the air compressor extracts air from the atmosphere and compresses the air to a preset pressure value, and then the air is conveyed to the oil mist generating unit through an air input pipe, a first air flow meter and an air pressure transmitter are arranged on one side of the air input pipe, the first air flow meter is used for measuring air flow data in the air input pipe, and the air pressure transmitter is used for measuring air pressure data in the air input pipe, converting the air pressure data into an electric signal and transmitting the electric signal to the data processing unit;
the oil mist generation unit comprises an oil tank, a heater and an oil suction pipe, wherein one end of the air input pipe, which is far away from the air compressor, penetrates through the oil tank, one end of the air input pipe, which penetrates through the oil tank, is fixedly connected with an oil mist ejector, one side of the oil mist ejector is connected with the oil suction pipe in a penetrating manner, a certain amount of oil is arranged in the oil tank, one end of the oil suction pipe, which is far away from the oil mist ejector, is arranged below the liquid level of the oil, and the heater is arranged in the oil tank;
the data monitoring unit is used for acquiring working condition data in the oil tank and transmitting the working condition data to the data processing unit, wherein the working condition data comprises oil pressure data, oil temperature data and oil level data, and the data monitoring unit is also used for acquiring oil mist regulation flow data, oil mist pressure data and oil mist delivery flow data and transmitting the oil mist regulation flow data, the oil mist pressure data and the oil mist delivery flow data to the data processing unit;
the data storage unit stores oil mist pressure limit data, oil pressure limit data, working oil temperature minimum data, working oil temperature maximum data and oil level liquid level limit data;
the data processing unit is used for analyzing and judging the received air pressure data, oil mist pressure data, oil temperature data and oil level and liquid level data, transmitting the obtained air leakage signal and air blockage signal to the alarm unit, and transmitting the obtained adjusting positive signal, adjusting negative signal, heating signal, cooling signal, opening signal, closing signal and liquid level over-low signal to the console; the data processing unit is also used for carrying out pipeline sealing analysis on the received air flow data, oil mist regulation flow data and oil mist transmission flow data to obtain an oil mist blockage signal and an oil mist leakage signal and sending the oil mist blockage signal and the oil mist leakage signal to the alarm unit;
the alarm unit receives and identifies an air leakage signal, an air blockage signal, an oil mist leakage signal and an oil mist blockage signal, starts the buzzer to give an alarm, and simultaneously carries out corresponding voice prompt broadcasting to remind a worker to maintain and overhaul the air input pipe, the first oil mist conveying pipe and the second oil mist conveying pipe;
the control console receives and identifies and controls the positive adjustment signal, the negative adjustment signal, the temperature rise signal, the temperature reduction signal, the opening signal, the closing signal and the liquid level over-low signal, and is further used for carrying out numerical setting on oil mist pressure limit data, oil pressure limit data, working oil temperature minimum data, working oil temperature maximum data and oil level liquid level limit data in the data storage unit, and the control console is specifically a tablet personal computer.
The invention has further technical improvements that: the heater submergence is below the liquid level of oil, the top of oil tank is provided with the oil mist export, and oil mist export intercommunication has first oil mist conveyer pipe and second oil mist conveyer pipe, and the diameter of first oil mist conveyer pipe is greater than the diameter of second oil mist conveyer pipe, the outside of first oil mist conveyer pipe and second oil mist conveyer pipe all is provided with third gas flowmeter and oil mist pressure transmitter, and the one end that the oil tank was kept away from to first oil mist conveyer pipe and second oil mist conveyer pipe is provided with the fan, the top through connection of oil tank has the vacuum control pipe, the outside of vacuum control pipe is provided with the vacuum control valve, the vacuum control valve is adjusted the pressure of the oil mist gaseous mixture in the oil tank, the second gas flowmeter is still installed in the outside of vacuum control pipe.
The invention has the further technical improvements that: the oil mist gas flow in the vacuum regulating pipe is obtained through the second gas flowmeter by the data monitoring unit, the oil mist gas flow in the first oil mist conveying pipe and the second oil mist conveying pipe is obtained through the third gas flowmeter, oil mist pressure data in the first oil mist conveying pipe and the second oil mist conveying pipe are obtained through the oil mist pressure transmitter, the data monitoring unit further comprises an oil pressure transmitter, a temperature sensor and a liquid level meter, the oil pressure transmitter is used for obtaining oil pressure data in an oil tank, the temperature sensor is used for obtaining oil temperature data in the oil tank, and the liquid level meter is used for obtaining oil level liquid level data.
The invention has further technical improvements that: the specific steps of the data processing unit for analyzing and judging are as follows:
the method comprises the following steps: marking the received air pressure data as KY, the oil mist pressure data as WY, the oil pressure data as YY, the oil temperature data as YW, the oil level data as YS, extracting the oil mist pressure limit data, the oil temperature minimum data, the oil temperature maximum data, and the oil level limit data from the data storage unit and marking them as WYx, YYx, YWx1, YWx2, and YSx, respectively;
step two: extracting a preset pressure value from the air delivery unit and marking the preset pressure value as YKS, and substituting the preset pressure value and air pressure data into a formula
Obtaining the air pressure ratio
When is coming into contact with
When the air leakage is less than or equal to 0.7, judging that the air conveying unit has leakage, generating an air leakage signal, and if the air leakage signal is less than or equal to 0.7
More than 0.7 and less than 1.3, the air delivery unit is judged to be working normally without any operation, and when the air delivery unit is not working normally, the air delivery unit is judged to be working normally
When the air blocking amount is larger than or equal to 1.3, judging that the air conveying unit is blocked, and generating an air blocking signal;
step three: substituting the oil mist pressure data and the oil mist pressure limit data into a calculation formula: the oil mist pressure difference value = oil mist pressure limit data-oil mist pressure data, obtaining an oil mist pressure difference value, presetting an allowable pressure difference value in a data processing unit, when the absolute value of the oil mist pressure difference value is smaller than or equal to the allowable pressure difference value, judging that the oil mist pressure is normal, not performing any processing, when the absolute value of the oil mist pressure difference value is larger than the allowable pressure difference value and the sign of the oil mist pressure difference value is positive, judging that the oil mist pressure is insufficient, generating an adjusting positive signal, and when the absolute value of the oil mist pressure difference value is larger than the allowable pressure difference value and the sign of the oil mist pressure difference value is negative, judging that the oil mist pressure is too large, and generating an adjusting negative signal;
step four: comparing the oil pressure data, the oil temperature data and the oil level liquid level data with oil pressure limit data, working oil temperature minimum data, working oil temperature maximum data and oil level liquid level limit data respectively, specifically:
when the oil pressure data is less than the oil pressure limit data, generating a temperature rise signal, when the oil pressure data is greater than the oil pressure limit data, generating a temperature fall signal, and when the oil pressure data is equal to the oil pressure limit data, not performing any treatment;
when the oil temperature data is less than the working oil temperature minimum data, generating an opening signal, when the oil temperature data is greater than the working oil temperature maximum data, generating a closing signal, and when the working oil temperature minimum data is less than or equal to the oil temperature data and less than or equal to the working oil temperature maximum data, not performing any treatment;
when the oil level data is less than or equal to the oil level limit data, a liquid level too low signal is generated, and when the oil level data is greater than the oil level limit data, no processing is performed.
The invention has further technical improvements that: the data processing unit performs the pipeline sealing analysis by the following specific steps:
SS 1: marking received air flow data as KL, oil mist regulation flow data as TL and oil mist delivery flow data as SL;
SS 2: substituting air flow data, mist regulation flow data, mist delivery flow data, air pressure data, and mist pressure data into a formula
To obtain the transport coefficient
Wherein a represents a gas mixing deviation factor, b represents a pressure difference influence factor, c represents a temperature influence factor, and a, b and c are preset values;
SS 3: the data processing unit is preset with a maximum conveying coefficient and a minimum conveying coefficient, and when the minimum conveying coefficient is less than or equal to the conveying coefficient and less than or equal to the maximum conveying coefficient, the first oil mist conveying pipe and the second oil mist conveying pipe are judged to be in normal states and do not perform any processing; when the conveying coefficient is smaller than the minimum conveying coefficient, judging that the first oil mist conveying pipe and the second oil mist conveying pipe are blocked, and generating an oil mist blocking signal; when the conveying coefficient is larger than the maximum conveying coefficient, the first oil mist conveying pipe and the second oil mist conveying pipe are judged to leak, and oil mist leakage signals are generated.
The invention has the further technical improvements that: the specific steps of the console for identification control are as follows:
when the adjusting positive signal is identified, the console sends an instruction to control the valve of the vacuum adjusting valve to be reduced;
when the adjusting negative signal is identified, the console sends an instruction to control the valve of the vacuum adjusting valve to be enlarged;
when the temperature-rising signal is identified, the console sends an instruction to control the temperature of the heater to rise by one degree;
when the temperature reduction signal is identified, the console sends a command to control the temperature of the heater to be reduced by one degree;
when the starting signal is identified, the console sends a command to control the heater to be started;
when the closing signal is identified, the console sends a command to control the heater to be closed;
when the liquid level is identified to be too low, the console sends out an instruction to control the heater and the air compressor to be closed simultaneously, and prompts a worker to fill oil into the oil tank.
Compared with the prior art, the invention has the beneficial effects that:
1. when the oil mist generating device is used, the oil mist generating unit and the data monitoring unit are arranged to simulate the oil mist with controllable pressure and flow generated corresponding to the production working condition, the data monitoring unit is used for collecting all parameters, and a chart curve is drawn through the console for visual display and comparison, so that the problem that the main parameters of the oil mist separator such as pressure drop performance, flow and the like are difficult to display, compare and analyze in real time in the prior art is solved.
2. Through setting up the data processing unit, utilize all kinds of pressure data and flow data to carry out comprehensive calculation and analysis to detect air input pipe, first oil mist conveyer pipe and second oil mist conveyer pipe, solve among the prior art and be difficult to in time discover the problem that the pipeline leaks and blocks up.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention;
fig. 2 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an oil mist generating device for testing includes an air delivery unit, an oil mist generating unit, a data monitoring unit, a data processing unit, an alarm unit, a console and a data storage unit;
the air delivery unit comprises an air compressor, the air compressor extracts air from atmosphere and compresses the air to a preset pressure value, and then the air is delivered to the oil mist generation unit through an air input pipe, a first air flow meter and an air pressure transmitter are arranged on one side of the air input pipe, the first air flow meter is used for measuring air flow data in the air input pipe, and the air pressure transmitter is used for measuring air pressure data in the air input pipe, converting the air pressure data into an electric signal and transmitting the electric signal to the data processing unit;
the oil mist generation unit comprises an oil tank, a heater and an oil suction pipe, wherein one end of the air input pipe, which is far away from the air compressor, penetrates through the oil tank, one end of the air input pipe, which penetrates through the oil tank, is fixedly connected with an oil mist ejector, one side of the oil mist ejector is connected with the oil suction pipe in a penetrating manner, a certain amount of oil is arranged in the oil tank, one end of the oil suction pipe, which is far away from the oil mist ejector, is arranged below the liquid level of the oil, and the heater is arranged in the oil tank;
the data monitoring unit is used for acquiring working condition data in the oil tank and transmitting the working condition data to the data processing unit, wherein the working condition data comprises oil pressure data, oil temperature data and oil level data, and the data monitoring unit is also used for acquiring oil mist regulation flow data, oil mist pressure data and oil mist transmission flow data and transmitting the oil mist regulation flow data, the oil mist pressure data and the oil mist transmission flow data to the data processing unit;
the data storage unit stores oil mist pressure limit data, oil pressure limit data, working oil temperature minimum data, working oil temperature maximum data and oil level limit data;
the data processing unit is used for analyzing and judging the received air pressure data, oil mist pressure data, oil temperature data and oil level and liquid level data, transmitting the obtained air leakage signal and air blockage signal to the alarm unit, and transmitting the obtained adjusting positive signal, adjusting negative signal, heating signal, cooling signal, opening signal, closing signal and liquid level over-low signal to the console; the data processing unit is also used for carrying out pipeline sealing analysis on the received air flow data, the oil mist regulation flow data and the oil mist conveying flow data to obtain an oil mist blockage signal and an oil mist leakage signal and sending the oil mist blockage signal and the oil mist leakage signal to the alarm unit;
the alarm unit receives and identifies the air leakage signal, the air blockage signal, the oil mist leakage signal and the oil mist blockage signal, starts the buzzer to give an alarm, and simultaneously carries out corresponding voice prompt broadcasting to remind a worker to maintain and overhaul the air input pipe, the first oil mist conveying pipe and the second oil mist conveying pipe;
the control console receives and identifies and controls the positive adjustment signal, the negative adjustment signal, the temperature rise signal, the temperature reduction signal, the opening signal, the closing signal and the liquid level low signal, meanwhile, the control console obtains air pressure data, oil mist pressure data, air flow data, oil mist regulation flow data and oil mist transmission flow data in all times from the data processing unit, a rectangular coordinate system is established for each type of data, the time is taken as an X axis, the pressure or the flow is taken as a Y axis, corresponding data of all times are marked in the rectangular coordinate system, and connection is sequentially carried out to obtain pressure-time curves or flow-time curves of all types of data, and the control console is specifically a tablet computer.
The heater submergence is below the liquid level of oil, the top of oil tank is provided with the oil mist export, and oil mist export intercommunication has first oil mist conveyer pipe and second oil mist conveyer pipe, and the diameter of first oil mist conveyer pipe is greater than the diameter of second oil mist conveyer pipe, the outside of first oil mist conveyer pipe and second oil mist conveyer pipe all is provided with third gas flowmeter and oil mist pressure transmitter, and the one end that the oil tank was kept away from to first oil mist conveyer pipe and second oil mist conveyer pipe is provided with the fan, the top through connection of oil tank has the vacuum control pipe, the outside of vacuum control pipe is provided with the vacuum control valve, the vacuum control valve is adjusted the pressure of the oil mist gaseous mixture in the oil tank, the second gas flowmeter is still installed in the outside of vacuum control pipe.
The oil mist gas flow in the vacuum regulating pipe is obtained through the second gas flowmeter by the data monitoring unit, the oil mist gas flow in the first oil mist conveying pipe and the second oil mist conveying pipe is obtained through the third gas flowmeter, oil mist pressure data in the first oil mist conveying pipe and the second oil mist conveying pipe are obtained through the oil mist pressure transmitter, the data monitoring unit further comprises an oil pressure transmitter, a temperature sensor and a liquid level meter, the oil pressure transmitter is used for obtaining oil pressure data in an oil tank, the temperature sensor is used for obtaining oil temperature data in the oil tank, and the liquid level meter is used for obtaining oil level liquid level data.
The specific steps of the data processing unit for analyzing and judging are as follows:
the method comprises the following steps: marking the received air pressure data as KY, the oil mist pressure data as WY, the oil pressure data as YY, the oil temperature data as YW, the oil level data as YS, extracting the oil mist pressure defining data, the oil temperature minimum data, the oil temperature maximum data, and the oil level defining data from the data storage unit and marking them as WYx, YYx, YWx1, YWx2, and YSx, respectively;
step two: extracting a preset pressure value from the air delivery unit and marking the preset pressure value as YKS, and substituting the preset pressure value and air pressure data into a formula
Obtaining the air pressure ratio
When it comes to
When the air leakage is less than or equal to 0.7, the air delivery unit is judged to have leakage, an air leakage signal is generated, and when the air leakage signal is less than or equal to 0.7
When the air blocking value is larger than 0.7 and smaller than 1.3, judging that the air conveying unit works normally, and not performing any operation, and when the air blocking value is larger than or equal to 1.3, judging that the air conveying unit is blocked, and generating an air blocking signal;
step three: substituting the oil mist pressure data and the oil mist pressure limit data into a calculation formula: the oil mist pressure difference value = oil mist pressure limit data-oil mist pressure data, obtaining an oil mist pressure difference value, presetting an allowable pressure difference value in a data processing unit, when the absolute value of the oil mist pressure difference value is smaller than or equal to the allowable pressure difference value, judging that the oil mist pressure is normal, not performing any processing, when the absolute value of the oil mist pressure difference value is larger than the allowable pressure difference value and the sign of the oil mist pressure difference value is positive, judging that the oil mist pressure is insufficient, generating an adjusting positive signal, and when the absolute value of the oil mist pressure difference value is larger than the allowable pressure difference value and the sign of the oil mist pressure difference value is negative, judging that the oil mist pressure is too large, and generating an adjusting negative signal;
step four: comparing the oil pressure data, the oil temperature data and the oil level liquid level data with oil pressure limit data, working oil temperature minimum data, working oil temperature maximum data and oil level liquid level limit data respectively, specifically:
when the oil pressure data is less than the oil pressure limit data, generating a temperature rise signal, when the oil pressure data is greater than the oil pressure limit data, generating a temperature fall signal, and when the oil pressure data is equal to the oil pressure limit data, not performing any treatment;
when the oil temperature data is less than the working oil temperature minimum data, generating a starting signal, when the oil temperature data is greater than the working oil temperature maximum data, generating a closing signal, and when the working oil temperature minimum data is less than or equal to the oil temperature data and less than or equal to the working oil temperature maximum data, not performing any treatment;
when the oil level data is less than or equal to the oil level limit data, a liquid level too low signal is generated, and when the oil level data is greater than the oil level limit data, no processing is performed.
The data processing unit performs pipeline sealing analysis by the following specific steps:
SS 1: marking the received air flow data as KL, marking the oil mist regulation flow data as TL, marking the oil mist delivery flow data as SL, wherein the oil mist regulation flow data is the oil mist flow passing through the vacuum regulation pipe;
SS 2: substituting air flow data, mist regulation flow data, mist delivery flow data, air pressure data, and mist pressure data into a formula
To obtain the transport coefficient
Wherein a represents a gas mixing deviation factor, b represents a differential pressure influence factor, c represents a temperature influence factor, and a, b and c are preset values;
SS 3: the data processing unit is preset with a maximum conveying coefficient and a minimum conveying coefficient, and when the minimum conveying coefficient is less than or equal to the conveying coefficient and less than or equal to the maximum conveying coefficient, the first oil mist conveying pipe and the second oil mist conveying pipe are judged to be in normal states and do not perform any processing; when the conveying coefficient is smaller than the minimum conveying coefficient, judging that the first oil mist conveying pipe and the second oil mist conveying pipe are blocked, and generating an oil mist blocking signal; and when the conveying coefficient is larger than the maximum conveying coefficient, judging that the first oil mist conveying pipe and the second oil mist conveying pipe leak, and generating an oil mist leakage signal.
The specific steps of the console for identification control are as follows:
when the adjusting positive signal is identified, the console sends an instruction to control the valve of the vacuum adjusting valve to be reduced;
when the adjusting negative signal is identified, the console sends an instruction to control the valve of the vacuum adjusting valve to be enlarged;
when the temperature-rising signal is identified, the console sends an instruction to control the temperature of the heater to rise by one degree;
when the temperature reduction signal is identified, the console sends a command to control the temperature of the heater to be reduced by one degree;
when the starting signal is identified, the console sends a command to control the heater to be started;
when the closing signal is identified, the console sends a command to control the heater to be closed;
when the liquid level is identified to be too low, the console sends out an instruction to control the heater and the air compressor to be closed simultaneously, and prompts a worker to fill oil into the oil tank.
The working principle is as follows: when the invention is used, firstly, the air compressor extracts air from the atmosphere and compresses the air to a preset pressure value, then the air is conveyed to the oil mist generating unit through the air input pipe, the air passes through the oil mist spray nozzle in the oil mist generating unit at a high speed, negative pressure is generated at the connection part of the oil mist spray nozzle and the oil suction pipe, oil in an oil tank is sucked into the oil mist spray nozzle from the oil suction pipe and is sprayed into an oil mist state after being mixed with the air, simultaneously, the heater heats the oil to reduce the viscosity of the oil, the fan is started to extract the oil mist through the first oil mist conveying pipe and the second oil mist conveying pipe, the oil mist pressure in the oil tank is adjusted through the vacuum adjusting valve, a first gas flow meter and a first air pressure transmitter are arranged at one side of the air input pipe, the first gas flow meter measures the air flow data in the air input pipe, the air pressure transmitter measures the air pressure data in the air input pipe and converts the air pressure data into an electric signal to be transmitted to the data processing unit, the data monitoring unit acquires working condition data in the oil tank and transmits the working condition data to the data processing unit, the data monitoring unit also acquires oil mist regulation flow data, oil mist pressure data and oil mist transmission flow data and transmits the oil mist regulation flow data, the oil mist pressure data and the oil mist transmission flow data to the data processing unit together, the data processing unit analyzes and judges the received air pressure data, the oil mist pressure data, the oil temperature data and the oil level liquid level data, transmits an obtained air leakage signal and an obtained air blockage signal to the alarm unit, and transmits an obtained regulation positive signal, a regulation negative signal, a temperature rise signal, a temperature fall signal, a start signal, a stop signal and an oil mist excessively low signal to the control console, the data processing unit also performs pipeline sealing analysis on the received air flow data, the oil mist regulation flow data and the oil mist transmission flow data to obtain an oil mist blockage signal and an oil mist leakage signal and transmits the oil mist leakage signal to the alarm unit, the alarm unit receives and identifies an air leakage signal, an air blockage signal, an oil mist leakage signal and an oil mist blockage signal, the buzzer is started to give an alarm, corresponding voice prompt broadcasting is carried out at the same time, a worker is reminded of maintaining and repairing the air input pipe, the first oil mist delivery pipe and the second oil mist delivery pipe, the console receives and identifies and controls an adjusting positive signal, an adjusting negative signal, a temperature increasing signal, a temperature decreasing signal, an opening signal, a closing signal and a low liquid level signal, the console obtains air pressure data, oil mist pressure data, air flow data, oil mist regulation flow data and oil mist delivery flow data at all times from the data processing unit, a rectangular coordinate system is established for each type of data, the time is used as an X axis, the pressure or the flow is used as a Y axis, and corresponding data at all times are marked in the rectangular coordinate system, and connecting the lines in sequence to obtain pressure-time curves or flow-time curves of various data.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Although one embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (6)
1. The utility model provides an oil mist generating device is used in test which characterized in that: the device comprises an air conveying unit, an oil mist generating unit, a data monitoring unit, a data processing unit, an alarm unit, a console and a data storage unit;
the air conveying unit comprises an air compressor, the air compressor extracts air from the atmosphere and compresses the air to a preset pressure value, and then the air is conveyed to the oil mist generating unit through an air input pipe, a first air flow meter and an air pressure transmitter are arranged on one side of the air input pipe, the first air flow meter is used for measuring air flow data in the air input pipe, and the air pressure transmitter is used for measuring air pressure data in the air input pipe, converting the air pressure data into an electric signal and transmitting the electric signal to the data processing unit;
the oil mist generation unit comprises an oil tank, a heater and an oil suction pipe, wherein one end of the air input pipe, which is far away from the air compressor, penetrates through the oil tank, one end of the air input pipe, which penetrates through the oil tank, is fixedly connected with an oil mist ejector, one side of the oil mist ejector is connected with the oil suction pipe in a penetrating manner, a certain amount of oil is arranged in the oil tank, one end of the oil suction pipe, which is far away from the oil mist ejector, is arranged below the liquid level of the oil, and the heater is arranged in the oil tank;
the data monitoring unit is used for acquiring working condition data in the oil tank and transmitting the working condition data to the data processing unit, wherein the working condition data comprises oil pressure data, oil temperature data and oil level data, and the data monitoring unit is also used for acquiring oil mist regulation flow data, oil mist pressure data and oil mist delivery flow data and transmitting the oil mist regulation flow data, the oil mist pressure data and the oil mist delivery flow data to the data processing unit;
the data storage unit stores oil mist pressure limit data, oil pressure limit data, working oil temperature minimum data, working oil temperature maximum data and oil level liquid level limit data;
the data processing unit is used for analyzing and judging the received air pressure data, oil mist pressure data, oil temperature data and oil level and liquid level data, transmitting the obtained air leakage signal and air blockage signal to the alarm unit, and transmitting the obtained adjusting positive signal, adjusting negative signal, heating signal, cooling signal, opening signal, closing signal and liquid level over-low signal to the console; the data processing unit is also used for carrying out pipeline sealing analysis on the received air flow data, the oil mist regulation flow data and the oil mist conveying flow data to obtain an oil mist blockage signal and an oil mist leakage signal and sending the oil mist blockage signal and the oil mist leakage signal to the alarm unit;
the alarm unit receives and identifies an air leakage signal, an air blockage signal, an oil mist leakage signal and an oil mist blockage signal, starts the buzzer to give an alarm, and simultaneously carries out corresponding voice prompt broadcasting to remind a worker to maintain and overhaul the air input pipe, the first oil mist conveying pipe and the second oil mist conveying pipe;
the control console receives and identifies the positive adjustment signal, the negative adjustment signal, the temperature rise signal, the temperature reduction signal, the opening signal, the closing signal and the low liquid level signal, meanwhile, the control console obtains air pressure data, oil mist pressure data, air flow data, oil mist regulation flow data and oil mist conveying flow data in each moment from the data processing unit, a rectangular coordinate system is established for each type of data, the moment is used as an X axis, the pressure or the flow is used as a Y axis, corresponding data of each moment are marked in the rectangular coordinate system, and connection is sequentially carried out to obtain pressure-moment curves or flow-moment curves of various types of data.
2. The oil mist generating device for the test according to claim 1, wherein the heater is immersed below a liquid level of the oil, the top of the oil tank is provided with an oil mist outlet which is communicated with a first oil mist conveying pipe and a second oil mist conveying pipe, the diameter of the first oil mist conveying pipe is larger than that of the second oil mist conveying pipe, a third gas flowmeter and an oil mist pressure transmitter are arranged on the outer sides of the first oil mist conveying pipe and the second oil mist conveying pipe, and the ends of the first oil mist delivery pipe and the second oil mist delivery pipe far away from the oil tank are provided with fans, the top of the oil tank is communicated with a vacuum adjusting pipe, the outer side of the vacuum adjusting pipe is provided with a vacuum adjusting valve, the vacuum adjusting valve adjusts the pressure of the oil mist mixed gas in the oil tank, and the outer side of the vacuum adjusting pipe is further provided with a second gas flowmeter.
3. The oil mist generating device for testing according to claim 2, wherein the data monitoring unit obtains the flow rate of oil mist gas in the vacuum regulating pipe through the second gas flowmeter, obtains the flow rates of oil mist gas in the first oil mist delivery pipe and the second oil mist delivery pipe through the third gas flowmeter, and obtains the oil mist pressure data in the first oil mist delivery pipe and the second oil mist delivery pipe through the oil mist pressure transmitter, the data monitoring unit further comprises an oil pressure transmitter, a temperature sensor and a level gauge, the oil pressure transmitter is used for obtaining the oil pressure data in the oil tank, the temperature sensor is used for obtaining the oil temperature data in the oil tank, and the level gauge is used for obtaining the oil level data.
4. The oil mist generating device for the test according to claim 1, wherein the data processing unit performs the analysis and the determination by the following steps:
the method comprises the following steps: marking the received air pressure data as KY, the oil mist pressure data as WY, the oil pressure data as YY, the oil temperature data as YW, the oil level data as YS, extracting the oil mist pressure limit data, the oil temperature minimum data, the oil temperature maximum data, and the oil level limit data from the data storage unit and marking them as WYx, YYx, YWx1, YWx2, and YSx, respectively;
step two: extracting a preset pressure value from the air delivery unit and marking the preset pressure value as YKS, and substituting the preset pressure value and air pressure data into a formula
Obtaining the air pressure ratio
When is coming into contact with
When the air leakage is less than or equal to 0.7, judging that the air conveying unit has leakage, generating an air leakage signal, and if the air leakage signal is less than or equal to 0.7
More than 0.7 and less than 1.3, the air delivery unit is judged to be working normally without any operation, and when the air delivery unit is not working normally, the air delivery unit is judged to be working normally
When the air blocking amount is larger than or equal to 1.3, judging that the air conveying unit is blocked, and generating an air blocking signal;
step three: substituting the oil mist pressure data and the oil mist pressure limit data into a calculation formula: the method comprises the steps that an oil mist pressure difference value = oil mist pressure limit data-oil mist pressure data is obtained, an allowed pressure difference value is preset in a data processing unit, when the absolute value of the oil mist pressure difference value is smaller than or equal to the allowed pressure difference value, the oil mist pressure is judged to be normal, no processing is carried out, when the absolute value of the oil mist pressure difference value is larger than the allowed pressure difference value and the sign of the oil mist pressure difference value is positive, the oil mist pressure is judged to be insufficient, an adjusting positive signal is generated, when the absolute value of the oil mist pressure difference value is larger than the allowed pressure difference value and the sign of the oil mist pressure difference value is negative, the oil mist pressure is judged to be too large, and an adjusting negative signal is generated;
step four: comparing the oil pressure data, the oil temperature data and the oil level liquid level data with oil pressure limit data, working oil temperature minimum data, working oil temperature maximum data and oil level liquid level limit data respectively, specifically:
when the oil pressure data is less than the oil pressure limit data, generating a temperature rise signal, when the oil pressure data is greater than the oil pressure limit data, generating a temperature drop signal, and when the oil pressure data is equal to the oil pressure limit data, not performing any treatment;
when the oil temperature data is less than the working oil temperature minimum data, generating an opening signal, when the oil temperature data is greater than the working oil temperature maximum data, generating a closing signal, and when the working oil temperature minimum data is less than or equal to the oil temperature data and less than or equal to the working oil temperature maximum data, not performing any treatment;
when the oil level data is less than or equal to the oil level limit data, a liquid level too low signal is generated, and when the oil level data is greater than the oil level limit data, no processing is performed.
5. The oil mist generating device for the test according to claim 4, wherein the data processing unit performs the pipeline sealing analysis by the following specific steps:
SS 1: marking received air flow data as KL, oil mist regulation flow data as TL and oil mist delivery flow data as SL;
SS 2: substituting air flow data, mist regulation flow data, mist delivery flow data, air pressure data, and mist pressure data into a formula
To obtain the transport coefficient
Wherein a represents a gas mixture deviation factor, and b representsThe differential pressure influence factor c represents a temperature influence factor, and a, b and c are preset values;
SS 3: the data processing unit is preset with a maximum conveying coefficient and a minimum conveying coefficient, and when the minimum conveying coefficient is less than or equal to the conveying coefficient and less than or equal to the maximum conveying coefficient, the first oil mist conveying pipe and the second oil mist conveying pipe are judged to be in normal states and do not perform any processing; when the conveying coefficient is smaller than the minimum conveying coefficient, judging that the first oil mist conveying pipe and the second oil mist conveying pipe are blocked, and generating an oil mist blocking signal; and when the conveying coefficient is larger than the maximum conveying coefficient, judging that the first oil mist conveying pipe and the second oil mist conveying pipe leak, and generating an oil mist leakage signal.
6. The oil mist generating device for the test according to claim 1, wherein the console performs the identification control by the following steps:
when the adjusting positive signal is identified, the console sends an instruction to control the valve of the vacuum adjusting valve to be reduced;
when the adjusting negative signal is identified, the console sends an instruction to control the valve of the vacuum adjusting valve to be enlarged;
when the temperature-rising signal is identified, the console sends an instruction to control the temperature of the heater to rise by one degree;
when the temperature reduction signal is identified, the console sends a command to control the temperature of the heater to be reduced by one degree;
when the starting signal is identified, the console sends a command to control the heater to be started;
when the closing signal is identified, the console sends a command to control the heater to be closed;
when the liquid level is identified to be too low, the console sends out an instruction to control the heater and the air compressor to be closed simultaneously, and prompts a worker to fill oil into the oil tank.
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| JPS57159207A (en) * | 1981-03-27 | 1982-10-01 | Nisshin Steel Co Ltd | Lubricator for bearing for rolling mill |
| CN2610211Y (en) * | 2003-03-03 | 2004-04-07 | 高淑德 | Oil atomization generating system |
| KR20090129677A (en) * | 2008-06-13 | 2009-12-17 | 광진정기(주) | Leak testing system of check valve for piston cooling |
| CN202547890U (en) * | 2012-01-09 | 2012-11-21 | 温州大学 | Leakage detection system of fuel injector of gas-liquid linkage internal combustion engine |
| CN203404583U (en) * | 2013-06-27 | 2014-01-22 | 宝山钢铁股份有限公司 | Precision-adjustable oil mist generating device |
| CN106644486A (en) * | 2016-11-16 | 2017-05-10 | 中国北方发动机研究所(天津) | Oil and gas separation performance test apparatus |
| CN109551299B (en) * | 2019-01-16 | 2024-01-19 | 典辉商贸(上海)有限公司 | Oil mist generating device |
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