CN109579937A - A kind of warm isostatic pressing machine working cylinder liquid level detection system of realization and detection method - Google Patents
A kind of warm isostatic pressing machine working cylinder liquid level detection system of realization and detection method Download PDFInfo
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- CN109579937A CN109579937A CN201811625375.1A CN201811625375A CN109579937A CN 109579937 A CN109579937 A CN 109579937A CN 201811625375 A CN201811625375 A CN 201811625375A CN 109579937 A CN109579937 A CN 109579937A
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- oil
- working cylinder
- liquid level
- isostatic pressing
- pressing machine
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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
- G01F23/802—Particular electronic circuits for digital processing equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of warm isostatic pressing machine working cylinder liquid level detection systems of realization, including warm isostatic pressing machine working cylinder and heating system operating oil tank, further include the oil filling pump being connected between warm isostatic pressing machine working cylinder and heating system operating oil tank and oil drain pump；The temperature isostatic pressing machine working cylinder is equipped with working cylinder and is full of detector；The heating system operating oil tank is equipped with liquid level detector；It is described to be connected full of detector and oil tank liquid level detector with controller.Analytical calculation in controller is all transferred to full of detector, the signal of oil-filled liquid level detector and oil extraction liquid level detector and data, the liquid level in oil extraction and Oil feeding process can be calculated in real time, convenient for the analysis to detection process, without the influence due to volume change, very good solution is in the prior art since the product of warm isostatic pressing machine compacting needs to be put into working cylinder, the problem of Medium Oil can be adhered on product, will cause the loss of Medium Oil when taking out product every time.
Description
Technical field
The present invention relates to Computer Simulation control technology fields, are a kind of warm isostatic pressing machine working cylinders of realization specifically
Liquid level detection system and detection method.
Background technique
Warm isostatic pressing machine will be filled with high-temperature medium oil during the work time, in working cylinder, and will deposit in cylinder in pressurization
In the ultra-high voltage environment of 200MPa or so, due to the unbearable so big pressure of current level sensing device, in work
Make not being arranged in cylinder for the senser element to the level sensing of Medium Oil in cylinder.It realizes to the medium oil liquid in working cylinder
Position height carries out detection can only be by the way of measuring indirectly.
Currently used indirect measurement method is isometric computer sim- ulation method of closed system, it may be assumed that by the oil in working cylinder
Liquid all flows back to fuel tank, calculates all oil mass Q1, Q1=Qq0+Qh0 in cleaning fuel tank Qq0, oil return box Qh0；Reset oil pipe
In be filled with oil liquid, oil mass is constant C；Total oil mass Q2 is finally obtained, i.e., are as follows: Q2=Q1+C.After working cylinder is full of, total oil
Amount subtracts the oil mass Qq1 of current cleaning fuel tank and the oil mass Qh1 of current oil return box, obtains total oil mass Qg1 of work at present cylinder,
That is: Qg1=Q2-Qq1-Qh1 converts to obtain the simulated altitude Hg of working cylinder by volume, it may be assumed that Hg=4Qg1/ (π D2).
But the method indirect measurement method has two in the measurements:
1, since the product of warm isostatic pressing machine compacting needs to be put into working cylinder, Medium Oil meeting when taking out product every time
It is adhered on product, will cause the loss of Medium Oil, and in whole system overhaul, the dismounting of sensor, oil circuit will also result in
The loss of Medium Oil, the volume data of Medium Oil will appear relatively large deviation and constantly add up after equipment long-time service, need again
Measure calculating, the trouble of increased working cylinder liquid level calibration.
2, since the working media oil of warm isostatic pressing machine is to need to work at high operating temperatures, and to be made according to technique
With requiring to be heated to different operating temperatures, heating temperature range is from room temperature to 300 DEG C, since Medium Oil is in different temperature,
Thermal expansion amount difference it is larger, use medium oil volume be used as the major parameter measured indirectly, can to control and display precision generation compared with
Big influence.
Summary of the invention
The purpose of the present invention is to provide a kind of warm isostatic pressing machine working cylinder liquid level detection system of realization and detection methods, use
In the solution prior art since the product that warm isostatic pressing machine is suppressed needs to be put into working cylinder, medium when taking out product every time
Oil can be adhered on product, will cause the loss of Medium Oil, and in whole system overhaul, and the dismounting of sensor, oil circuit also can
The loss for causing Medium Oil, the volume data of Medium Oil will appear relatively large deviation and constantly add up after equipment long-time service, need
Survey calculation is re-started, the trouble and temperature of increased working cylinder liquid level calibration influence volume and influence the problem of calculating.
The present invention is solved the above problems by following technical proposals:
A kind of warm isostatic pressing machine working cylinder liquid level detection system of realization, including warm isostatic pressing machine working cylinder and heating system work
Make fuel tank, further includes the oil filling pump being connected between warm isostatic pressing machine working cylinder and heating system operating oil tank and oil drain pump；Institute
Warm isostatic pressing machine working cylinder is stated equipped with working cylinder full of detector；The heating system operating oil tank is equipped with level sensing
Device；It is described to be connected full of detector and oil tank liquid level detector with controller.Full of detector, oil-filled liquid level detector and oil extraction
The signal and data of liquid level detector are all transferred to analytical calculation in controller, can calculate in oil extraction and Oil feeding process in real time
Liquid level, convenient for the analysis to detection process, without the influence due to volume change, the very good solution prior art
In due to warm isostatic pressing machine compacting product need to be put into working cylinder, every time take out product when Medium Oil can be adhered to production
On product, the loss of Medium Oil will cause, and in whole system overhaul, the dismounting of sensor, oil circuit will also result in Medium Oil
Loss, the volume data of Medium Oil will appear relatively large deviation and constantly add up after equipment long-time service, need to re-start measurement
It calculates, the trouble and temperature of increased working cylinder liquid level calibration influence volume and influence the problem of calculating.
Preferably, the controller includes processor and its minimum system circuit, may be programmed, meets operation logic control
Function, combine the data of working cylinder of measurement that can calculate the rate of oil pumping and oil extraction by programming, and then calculate pumping
Oil and oil extraction during liquid level, and by programming setting liquid level data working area, for store in real time it is oil-filled or
Oil extraction liquid level is still stored in working area meeting with the emergency cases real time datas such as power failure or failure in the process,
The data in working area are read after restoring normal.
Preferably, the oil filling pump and oil drain pump are respectively arranged with valve, can be controlled by valve to oil-filled or oil extraction
System, it is more convenient.
A method of realizing warm isostatic pressing machine working cylinder level sensing, which comprises the steps of:
Step 1: accurately measuring the internal diameter and Nei Gao of working cylinder, calculated in cylinder totally according to resulting data are measured
Product；
Step 2: oil-filled to working cylinder progress by oil filling pump, testing agency detects in working cylinder at the top of working cylinder
After Medium Oil is full of, oil filling pump stops working, and analyzes Oil feeding process；
Step 3: accurately controlling and detect working cylinder by the control system that PLC controller and host computer form and be full of
The time of oil and practical oil-filled time, and step 1 and 2 data is combined to calculate the oil-filling at time point in certain Oil feeding process
Position height；
Step 4: oil extraction, and the control system essence being made up of PLC controller and host computer are carried out by oil drain pump
The really time of the time and practical oil extraction of control and detection working cylinder emptying oil, and step 1 and 2 data is combined to calculate oil extraction
The oil extraction liquid level at some time point in journey；
Step 5: oil-filled, oil extraction liquid level data working area is set in a control program, and in real time to step 3 and step 4
In data kept in.
The internal diameter for accurately measuring working cylinder first can calculate working cylinder floor space SBottom, measure interior high LAlways, thus
Total volume V in working cylinder can be calculatedAlways,
That is: VAlways=LAlways×SBottom (1)
Since oil-filled process is to be extracted into working media oil in working cylinder from heating fuel tank using oil filling pump, until work
After testing agency detects that Medium Oil is full of in working cylinder at the top of cylinder, oil filling pump stops working.Pass through this control process point
Analysis, the process of entire working media oil heating work cylinder all have oil filling pump to complete, and the power of motor of oil filling pump is permanent
Fixed, the pipeline of oil filling pump inlet and outlet is fixed, that is to say, that the oil-filled speed v of oil filling pumpIt fillsIt is constant.We assume that being full of
The time of working cylinder is tAlways, fill a certain amount of volume VIt fillsThe time of Medium Oil is tIt fills。
It is so available:
Calculate the liquid level L of practical heat medium oil in working cylinderIt fills, it can be obtained according to (1), (2):
It is converted by (3):
Since the control system that PLC programmable logic controller (PLC) and host computer form can be accurately controlled and detect
The oil-overflow time t of working cylinderAlwaysWith practical oil-filled time tIt fills, when easily can calculate real-time by formula (4)
Between point on oil-filled liquid level LIt fills.Similarly, due to working cylinder to the oil extraction process of heating system fuel tank be by oil drain pump Lai complete
Be at, the oil extraction speed of oil drain pump it is constant, control and calculate the row on also available real-time time point by control system
Oily liquid level LRow.Oil-filled, oil extraction liquid level data working area is provided in processing procedure sequence, and real-time perfoming scratch pad operation ensure that
The effective and reliability of detection.
Preferably, the control device is connected with computer, and step 3 and 4 resulting data can be transferred to computer progress
Display and storage, Computer display, the acquisition convenient for operator to data, to the control of detection process.
Preferably, when the step 5 medium temperature isostatic pressing machine accidents happened to situation, after warm isostatic pressing machine restores normal, control
System processed oil-filled or oil extraction liquid level data last before directly going to data working area to transfer failure, in this way can be to avoid due to stopping
Emergency event as electricity leads to loss of data, ensure that the accuracy of data, such detection method are more reasonable and effective.
Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that
(1) described to be connected full of detector and oil tank liquid level detector with controller in the present invention.Full of detector, fill
The signal and data of oil liquid bit detector and oil extraction liquid level detector are all transferred to analytical calculation in controller, can calculate in real time
Liquid level in oil extraction and Oil feeding process out, convenient for the analysis to detection process.
(2) in the present invention, when warm isostatic pressing machine accidents happened to situation, after warm isostatic pressing machine restores normal, control system
Last oil-filled or oil extraction liquid level data before directly going to data working area to transfer failure, in this way can be to avoid due to having a power failure in this way
Emergency event lead to loss of data, ensure that the accuracy of data, such detection method are more reasonable and effective.
(3) in the present invention, control device is connected with computer, and step 3 and 4 resulting data can be transferred to computer progress
Display and storage, Computer display, the acquisition convenient for operator to data, to the control of detection process.
Detailed description of the invention
Fig. 1 is warm isostatic pressing machine working cylinder and heating system operating oil tank structural schematic diagram of the invention.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1:
In conjunction with shown in attached drawing 1, a kind of warm isostatic pressing machine working cylinder liquid level detection system of realization, including the work of warm isostatic pressing machine
Cylinder and heating system operating oil tank, further include be connected to it is oil-filled between warm isostatic pressing machine working cylinder and heating system operating oil tank
Pump and oil drain pump；The temperature isostatic pressing machine working cylinder is equipped with working cylinder and is full of detector；On the heating system operating oil tank
Equipped with liquid level detector；It is described to be connected full of detector and oil tank liquid level detector with controller.Full of detector, oil-filled liquid level
The signal and data of detector and oil extraction liquid level detector are all transferred to analytical calculation in controller, can calculate oil extraction in real time
With the liquid level in Oil feeding process, convenient for the analysis to detection process.Controller therein includes processor and it is minimum
Circuit system may be programmed, and meet the function of operation logic control, combine the data of the working cylinder of measurement that can calculate by programming
The rate pumped out with oil extraction, and then the liquid level during oil pumping and oil extraction is calculated, and pass through programming setting liquid level
Data working area, for storing real-time oil-filled or oil extraction liquid level, even if meeting with the burst feelings such as power failure or failure in the process
Condition real time data is also still stored in working area, and the data in working area are read after restoring normal；And oil filling pump and
Oil drain pump is respectively arranged with valve, can be controlled by valve oil-filled or oil extraction, more convenient.
Based on above-mentioned system, a kind of following method for realizing temperature isostatic pressing machine working cylinder level sensing is devised, is wrapped
It includes step 1: accurately measuring the internal diameter and Nei Gao of working cylinder, calculate total volume in cylinder according to resulting data are measured；
Step 2: oil-filled to working cylinder progress by oil filling pump, testing agency detects in working cylinder at the top of working cylinder
After Medium Oil is full of, oil filling pump stops working, and analyzes Oil feeding process；
Step 3: accurately controlling and detect working cylinder by the control system that PLC controller and host computer form and be full of
The time of oil and practical oil-filled time, and step 1 and 2 data is combined to calculate the oil-filling at time point in certain Oil feeding process
Position height；
Step 4: oil extraction, and the control system essence being made up of PLC controller and host computer are carried out by oil drain pump
The really time of the time and practical oil extraction of control and detection working cylinder emptying oil, and step 1 and 2 data is combined to calculate oil extraction
The oil extraction liquid level at some time point in journey；
Step 5: oil-filled, oil extraction liquid level data working area is set in a control program, and in real time to step 3 and step 4
In data kept in.
The internal diameter for accurately measuring working cylinder first can calculate working cylinder floor space SBottom, measure interior high LAlways, thus
Total volume V in working cylinder can be calculatedAlways,
That is: VAlways=LAlways×SBottom (1)
Since oil-filled process is to be extracted into working media oil in working cylinder from heating fuel tank using oil filling pump, until work
After testing agency detects that Medium Oil is full of in working cylinder at the top of cylinder, oil filling pump stops working.Pass through this control process point
Analysis, the process of entire working media oil heating work cylinder all have oil filling pump to complete, and the power of motor of oil filling pump is permanent
Fixed, the pipeline of oil filling pump inlet and outlet is fixed, that is to say, that the oil-filled speed v of oil filling pumpIt fillsIt is constant.We assume that being full of
The time of working cylinder is tAlways, fill a certain amount of volume VIt fillsThe time of Medium Oil is tIt fills。
It is so available:
Calculate the liquid level L of practical heat medium oil in working cylinderIt fills, it can be obtained according to (1), (2):
It is converted by (3):
Since the control system that PLC programmable logic controller (PLC) and host computer form can be accurately controlled and detect
The oil-overflow time t of working cylinderAlwaysWith practical oil-filled time tIt fills, when easily can calculate real-time by formula (4)
Between point on oil-filled liquid level LIt fills.Similarly, due to working cylinder to the oil extraction process of heating system fuel tank be by oil drain pump Lai complete
Be at, the oil extraction speed of oil drain pump it is constant, control and calculate the row on also available real-time time point by control system
Oily liquid level LRow.Oil-filled, oil extraction liquid level data working area is provided in processing procedure sequence, and real-time perfoming scratch pad operation ensure that
The effective and reliability of detection.Control device can be connected with computer, and step 3 and 4 resulting data can be transferred to computer
It is shown and is stored, Computer display, the acquisition convenient for operator to data, to the control of detection process.Step 5 medium temperature
When isostatic pressing machine accidents happened to situation, after warm isostatic pressing machine restores normal, control system can directly go to data working area to transfer
Last oil-filled or oil extraction liquid level data before failure can cause data to be lost to avoid due to such emergency event that has a power failure in this way
Lose, ensure that the accuracy of data, such detection method is more reasonable and effective, the method also solve the prior art due to
The product of warm isostatic pressing machine compacting needs to be put into working cylinder, and Medium Oil can be adhered on product when taking out product every time,
Will cause the loss of Medium Oil, and in whole system overhaul, the dismounting of sensor, oil circuit will also result in the loss of Medium Oil,
The volume data of Medium Oil will appear relatively large deviation and constantly add up after equipment long-time service, need to re-start survey calculation,
The trouble and temperature of increased working cylinder liquid level calibration influence volume and influence the problem of calculating.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can be designed that a lot of other modification and implementations, these modifications and implementations will fall in principle disclosed in the present application
Within scope and spirit.
Claims (6)
1. a kind of warm isostatic pressing machine working cylinder liquid level detection system of realization, including warm isostatic pressing machine working cylinder and heating system work
Fuel tank, it is characterised in that: further include the oil filling pump that is connected between warm isostatic pressing machine working cylinder and heating system operating oil tank and
Oil drain pump；The temperature isostatic pressing machine working cylinder is equipped with working cylinder and is full of detector；The heating system operating oil tank is equipped with
Liquid level detector；It is described to be connected full of detector and oil tank liquid level detector with controller.
2. the warm isostatic pressing machine working cylinder liquid level detection system of realization according to claim 1, it is characterised in that: the control
Device includes processor and its minimum system circuit, be may be programmed, and the function of operation logic control is met.
3. the warm isostatic pressing machine working cylinder liquid level detection system of realization according to claim 1, it is characterised in that: described oil-filled
Pump and oil drain pump are respectively arranged with valve.
4. a kind of method for realizing warm isostatic pressing machine working cylinder level sensing, which comprises the steps of:
Step 1: accurately measuring the internal diameter and Nei Gao of working cylinder, calculate total volume in cylinder according to resulting data are measured；
Step 2: oil-filled to working cylinder progress by oil filling pump, testing agency detects medium in working cylinder at the top of working cylinder
After oil is full of, oil filling pump stops working, and is analyzed in real time Oil feeding process；
Step 3: accurately being controlled by the control system that PLC controller and host computer form and to detect working cylinder oil-overflow
Time and practical oil-filled time, and step 1 and 2 data is combined to calculate the oil-filling at time point in certain Oil feeding process in real time
Position height；
Step 4: oil extraction being carried out by oil drain pump, and is accurately controlled by the control system that PLC controller and host computer form
The time of the time and practical oil extraction of system and detection working cylinder emptying oil, and step 1 and 2 data is combined to calculate oil extraction in real time
The oil extraction liquid level at some time point in journey；
Step 5: oil-filled, oil extraction liquid level data working area is set in a control program, and in real time in step 3 and step 4
Data are kept in.
5. the method according to claim 2 for realizing warm isostatic pressing machine working cylinder level sensing, it is characterised in that: the control
Device processed is connected with computer, and step 3 and 4 resulting data can be transferred to computer and be shown and stored.
6. the method according to claim 2 for realizing warm isostatic pressing machine working cylinder level sensing, it is characterised in that: the step
When rapid 5 medium temperature isostatic pressing machine accidents happened to situation, after warm isostatic pressing machine restores normal, control system can directly go data temporary
Transfer the oil-filled or oil extraction liquid level data of last time before failure in area.
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