CN206801980U - A kind of HTHP rheometer fluid pressure type axle pressure generating apparatus - Google Patents
A kind of HTHP rheometer fluid pressure type axle pressure generating apparatus Download PDFInfo
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- CN206801980U CN206801980U CN201720311017.8U CN201720311017U CN206801980U CN 206801980 U CN206801980 U CN 206801980U CN 201720311017 U CN201720311017 U CN 201720311017U CN 206801980 U CN206801980 U CN 206801980U
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- plunger case
- cylinder
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- fluid pressure
- oil
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Abstract
The utility model discloses a kind of HTHP rheometer fluid pressure type axle pressure generating apparatus, it includes fuel tank, oil pump, plunger case, pressurizing cylinder, controller, the input channel of the oil pump is connected with fuel tank, output channel is connected to three oil circuits, first oil circuit is connected by drain line with fuel tank, Article 2 oil circuit is connected with the oil inlet of plunger case, Article 3 oil circuit is connected with the rodless cavity of pressurized cylinder, detecting element is configured with the both ends of pressurizing cylinder, the tailpiece of the piston rod of the pressurized cylinder and the depression bar phase configuration of HTHP rheometer, the tailpiece of the piston rod of the plunger case is driven by plunger case drive device, the cylinder diameter of the pressurized cylinder is bigger than the cylinder diameter of plunger case, it is poor ratio to be present in both, the controller is connected with detecting element and plunger case drive device respectively.The utility model realizes that the Quick-pressing of axle pressure, low speed feeding, accurate pressurize, ftercompction and return work, whole process operate steadily by the various combination of finite element, and noise is small.
Description
Technical field
It the utility model is related to a kind of high-pressure experimental study field, more particularly to HTHP rheometer fluid pressure type
Axle pressure generating apparatus, laboratory ultra high pressure experimental study was both can be applied to, it can also be used to geoscience research, aviation boat
My god, the shaping of shipping industry, material, the ultra high pressure equipment of each technical field such as petrochemical industry.
Background technology
The development of hydraulic technique and TT＆C system causes ultrahigh-pressure hydraulic research application to obtain made rapid progress.High temperature and high pressure flow
It is advanced laboratory apparatus during Earth is probed into become instrument, the reliability of result of study be heavily dependent on confined pressure pressure,
Axial strain and the control accuracy of heating system.Rheometer is by the translational speed and extruding force size of control deformation plunger come mould
Intend axial hyperbaric environment, carry out rheology research.When carrying out deformation experiment, the speed of rheology is 10-2~10-7/ s, it is desirable to
Axial strain movement velocity is low and scope is wide, while precision will height.In conventional HTHP rheology equipment, confined pressure system
Hydraulic drive is had evolved into, the transmission of axle pressure is still more based on the traditional form of " motor+decelerator+ball-screw ".While by
It is indefinite in motor low-speed performance, often ensured in machine driving using multistage high speed reducing ratio decelerator series connection to small feeding
Control.And find in actual applications, noise caused by this multi-stage mechanical transmission can be to sound wave, vibration detection in rheological experiment
A certain degree of interference is produced, therefore it is significant to carry out fluid pressure type transformation to rheometer axle pressure system based on superhigh pressure technique
's.
In rheometer axle hydraulic fluid pressure type transformation process is realized, it is that key is asked that how accurate control shaft, which forces down speed feeding,
Topic, how this controls small inlet flow rate if being just related to, especially in ultra high pressure stage.The high-speed switch response valve speed of in the market
Degree is slower, does not reach the switching frequency of requirement, can not meet experiment demand.
Utility model content
Technical problem to be solved in the utility model is to provide one kind for above-mentioned the shortcomings of the prior art can
Realize low pressure Quick-pressing, the HTHP rheometer fluid pressure type axle pressure generating apparatus of super-pressure low rate feeding.
Technical scheme is used by the utility model：A kind of HTHP rheometer fluid pressure type axle pressure generating apparatus,
It includes fuel tank, oil pump, plunger case, pressurizing cylinder, controller, and the input channel of the oil pump is connected with fuel tank, output channel
Three oil circuits are connected to, first oil circuit is connected by drain line with fuel tank, the oil-feed of Article 2 oil circuit and plunger case
Mouth is connected, and Article 3 oil circuit is connected with the rodless cavity of pressurized cylinder, and detecting element, the supercharging are configured with the both ends of pressurizing cylinder
The tailpiece of the piston rod of cylinder and the depression bar phase configuration of HTHP rheometer, the tailpiece of the piston rod of the plunger case is driven by plunger case to be filled
Driving is put, the cylinder diameter of the pressurized cylinder is smaller than the cylinder diameter of plunger case, and both are present, and ratio is poor, and the controller is first with detection respectively
Part is connected with plunger case drive device.
By above-mentioned technical proposal, the first hydraulic valve is installed on the output pipe of oil pump, in the entrance of Article 2 oil circuit
Provided with the second hydraulic valve, the 3rd hydraulic valve is provided with the entrance of Article 3 oil circuit.
By above-mentioned technical proposal, the drain line includes automatically controlled servo valve and manual overflow valve, after both are parallel with one another
It is connected with fuel tank.
By above-mentioned technical proposal, the plunger case drive device includes the second servomotor, the output of the second servomotor
Axle is connected by transmission mechanism with the tailpiece of the piston rod of plunger case, for driving the piston rod of plunger case to do linear reciprocating motion.
By above-mentioned technical proposal, the oil pump is worked by the first servo motor driven oil pump.
By above-mentioned technical proposal, the plunger case is single-piston formula hydraulic cylinder, and one is respectively equipped with the both ends of plunger case
Limit switch, when its plunger rod contacts is to one of limit switch, the second servomotor can be automatically stopped work.
By above-mentioned technical proposal, the detecting element includes displacement transducer and pressure sensor.
By above-mentioned technical proposal, first hydraulic valve, the second hydraulic valve and the 3rd hydraulic valve are hand-operated hydraulic valve.
By above-mentioned technical proposal, the cylinder diameter ratio of the plunger case and pressurized cylinder is：1:8~1:12.
Operation principle of the present utility model is：The utility model passes through transmission mechanism by the way that plunger case hydraulic cylinder is anticaustic
The gyration of second servomotor is converted to linear motion by the connection with piston rod, promotes the feeding of plunger case liquid so as to real
Now to the supply of pressurized cylinder fluid；The design of plunger case cylinder diameter is much larger than by pressurizing cylinder cylinder diameter simultaneously, can solve to be driven
Small and the second servomotor rotating speed of middle feeding can not be too small contradiction, the cylinder diameter ratio of two hydraulic cylinders of rational design can have
Effect realizes the accurate control of the small feeding of oil cylinder piston by transformational relation while reaching superelevation axle pressure request.
Having the beneficial effect that acquired by the utility model：
1st, the utility model realizes Quick-pressing, accurately low speed feeding, the guarantor of axle pressure by the various combination of finite element
Pressure, ftercompction and return work, whole process operate steadily, and noise is small.
2nd, the present apparatus is realized to super-pressure pressure using the low-pressure side of servomotor, servo valve, plunger case control pressurizing cylinder
The control of power, system are conventional Hydraulic Elements, easily buying, and the manufacturing cycle is short, and cost is low.
3rd, the present apparatus uses the fluid pressure type kind of drive, can effectively realize the accurate control of large and small flow, have pressurize into
Give, holding pressure control, ftercompction, return function, can reach axial rheological experiment requirement, solve to disturb present in machine driving and ask
Topic, operate steadily reliable, the device can be used as test research device, can be used for needing the metallurgy of super-pressure, material shaping etc.
Other occasions.
Brief description of the drawings
Fig. 1 is the schematic diagram of HTHP rheometer fluid pressure type axle pressure generating apparatus provided by the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, present embodiments providing a kind of HTHP rheometer fluid pressure type axle pressure generating apparatus, it includes
Fuel tank 1, filter 2, oil pump 3, check valve 5, plunger case 13, pressurizing cylinder 11, controller.The oil pump 3 passes through the first servo
Motor 4 drives operation of oil pump, and the input channel of the oil pump 3 is connected by filter 2 with fuel tank 1, and output channel connects respectively
There are three oil circuits, first oil circuit is connected by drain line with fuel tank, and Article 2 oil circuit is connected with the oil inlet of plunger case 13,
Article 3 oil circuit is connected with the rodless cavity of pressurized cylinder 11, and detecting element 10, the supercharging are configured with the both ends of pressurizing cylinder 11
The tailpiece of the piston rod of cylinder 11 and the depression bar phase configuration of HTHP rheometer, the tailpiece of the piston rod of the plunger case 13 are driven by plunger case
Dynamic device driving, the cylinder diameter of the plunger case is smaller than the cylinder diameter of pressurized cylinder, and both have ratio preferably 1:10, the controller point
It is not connected with detecting element 10 and plunger case drive device, wherein, the detecting element 10 includes displacement transducer and pressure passes
Sensor.
In the present embodiment, the first hydraulic valve 6 is installed on the output pipe of oil pump 3, is set in the entrance of Article 2 oil circuit
There is the second hydraulic valve 12, the 3rd hydraulic valve 9 is provided with the entrance of Article 3 oil circuit, in the present embodiment, first hydraulic valve 6,
Second hydraulic valve 12 and the 3rd hydraulic valve 9 are ultra-high-pressure hand hydraulic valve.Pressurizing cylinder 11 is extra high pressure charging oil cylinder (existing
There is under equipment high pressure end pressure up to 120MPa).
In the present embodiment, the drain line includes automatically controlled servo valve 8 and manual overflow valve 7, both it is parallel with one another after with
Fuel tank 1 is connected.
In the present embodiment, the plunger case drive device includes the second servomotor 14, the output shaft of the second servomotor
It is connected by decelerator and transmission mechanism with the tailpiece of the piston rod of plunger case, the piston rod for driving plunger case does reciprocating linear fortune
It is dynamic., the plunger case 13 is single-piston formula hydraulic cylinder, a limit switch is respectively equipped with the both ends of plunger case, when its piston
When bar touches one of limit switch, the second servomotor can be automatically stopped work.
The present apparatus is realized to ultra high pressure using the low-pressure side of servomotor, servo valve, plunger case control pressurizing cylinder
Control, system is conventional Hydraulic Elements, easily buying, the manufacturing cycle is short, and cost is low.
The application method of said apparatus, comprises the following steps：
S1, provide HTHP rheometer fluid pressure type axle pressure generating apparatus as described above；
S2, axial pressurization steps at initial stage are carried out, be specially：First, second, third hydraulic valve (6,12,9) is opened, is started
First servomotor 4 drives oil pump 3 that hydraulic oil is reached into the first hydraulic valve 6, and the hydraulic oil with pressure is passing through second respectively
The rodless cavity end of pressurizing cylinder 11 and plunger case 13 is had respectively entered after bar oil circuit and Article 3 oil circuit, is on the one hand realized to supercharging
The big flow supply of oil cylinder, it on the other hand can be achieved to supplement the fluid of plunger case；
S3, rheological experiment step is carried out, be specially：During axial low speed feeding, the first liquid on the closing output pipe of oil pump 3
Pressure valve 6, and the 3rd hydraulic valve 9 on the second hydraulic valve 12 and Article 3 oil circuit on Article 2 oil circuit is opened, start second and watch
Motor 14 is taken, is constantly advanced in the piston for driving lower prop plug cylinder 13 of the second servomotor 14 to rodless cavity, fluid is through Article 3
Enter pressurizing cylinder 11, while the numerical value of Real-time Feedback pressure sensor and position sensor after oil circuit, to the second servomotor
14 carry out full closed loop control, slowly pressurization automatic pressure-maintaining after reaching target；
S4, ftercompction step is carried out, be specially：Automatically controlled servo valve 8 and manual overflow valve 7 are adjusted, is closed on Article 3 oil circuit
The 3rd hydraulic valve 9, open first, second hydraulic valve (6,12), start the servomotor 14 of oil pump 3 and second plunger case 13 is entered
Row ftercompction works, and plunger case 13 can continue to carry out pressurize and feeding task to pressurizing cylinder 11 after the completion of ftercompction；
S5, progress return low speed move back pressure step, close the first hydraulic valve 6, open second, third hydraulic valve (12,9), open
Dynamic second servomotor 14 is inverted at a slow speed, is driven piston rod to retreat realization and is moved back pressure work, so as to drive pressurizing cylinder 11 to live
Plug retreats, and realizes the separation of depression bar and sample；To ensure that return is smoothed out, before moving back pressure task and carrying out, the 3rd can be first closed
Hydraulic valve, manual overflow valve and the second servomotor 14 are opened by hydraulic oil emptying in plunger case 13, is moved back with having sufficient space
Pressure；
S6, when move back be pressed onto in the range of safe pressure when, close the second hydraulic valve 12, by controlling automatically controlled servo valve 8 to realize
Quickly move back pressure.
Claims (9)
1. a kind of HTHP rheometer fluid pressure type axle pressure generating apparatus, it include fuel tank, oil pump, plunger case, pressurizing cylinder,
Controller, the input channel of the oil pump are connected with fuel tank, and output channel is connected to three oil circuits, and first oil circuit passes through
Drain line is connected with fuel tank, and Article 2 oil circuit is connected with the oil inlet of plunger case, the rodless cavity of Article 3 oil circuit and pressurized cylinder
It is connected, detecting element, the tailpiece of the piston rod of the pressurized cylinder and the pressure of HTHP rheometer is configured with the both ends of pressurizing cylinder
Bar phase configuration, the tailpiece of the piston rod of the plunger case are driven by plunger case drive device, and the cylinder diameter of the pressurized cylinder compares plunger case
Cylinder diameter it is big, both are present, and ratio is poor, and the controller is connected with detecting element and plunger case drive device respectively.
2. HTHP rheometer according to claim 1 fluid pressure type axle pressure generating apparatus, it is characterised in that：In oil pump
Output pipe on be installed on the first hydraulic valve, the second hydraulic valve is provided with the entrance of Article 2 oil circuit, in Article 3 oil circuit
Entrance is provided with the 3rd hydraulic valve.
3. HTHP rheometer according to claim 1 or 2 fluid pressure type axle pressure generating apparatus, it is characterised in that：Institute
Stating drain line includes automatically controlled servo valve and manual overflow valve, is connected after both are parallel with one another with fuel tank.
4. HTHP rheometer according to claim 1 or 2 fluid pressure type axle pressure generating apparatus, it is characterised in that：Institute
Stating plunger case drive device includes the second servomotor, the work that the output shaft of the second servomotor passes through transmission mechanism and plunger case
Stopper rod end is connected, for driving the piston rod of plunger case to do linear reciprocating motion.
5. HTHP rheometer according to claim 1 or 2 fluid pressure type axle pressure generating apparatus, it is characterised in that：Institute
Oil pump is stated to work by the first servo motor driven oil pump.
6. HTHP rheometer according to claim 4 fluid pressure type axle pressure generating apparatus, it is characterised in that：The post
Plug cylinder is single-piston formula hydraulic cylinder, and a limit switch is respectively equipped with the both ends of plunger case, when its plunger rod contacts is to wherein
During one limit switch, the second servomotor can be automatically stopped work.
7. the HTHP rheometer fluid pressure type axle pressure generating apparatus according to 1 or 2, it is characterised in that：The detection member
Part includes displacement transducer and pressure sensor.
8. HTHP rheometer according to claim 2 fluid pressure type axle pressure generating apparatus, it is characterised in that：Described
One hydraulic valve, the second hydraulic valve and the 3rd hydraulic valve are hand-operated hydraulic valve.
9. HTHP rheometer according to claim 1 or 2 fluid pressure type axle pressure generating apparatus, it is characterised in that：Institute
The cylinder diameter ratio for stating plunger case and pressurized cylinder is：1:8~1:12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720311017.8U CN206801980U (en) | 2017-03-28 | 2017-03-28 | A kind of HTHP rheometer fluid pressure type axle pressure generating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720311017.8U CN206801980U (en) | 2017-03-28 | 2017-03-28 | A kind of HTHP rheometer fluid pressure type axle pressure generating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801980U true CN206801980U (en) | 2017-12-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720311017.8U Expired - Fee Related CN206801980U (en) | 2017-03-28 | 2017-03-28 | A kind of HTHP rheometer fluid pressure type axle pressure generating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206801980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561347A (en) * | 2018-05-31 | 2018-09-21 | 武汉船用机械有限责任公司 | A kind of oil cylinder hydraulic control system |
-
2017
- 2017-03-28 CN CN201720311017.8U patent/CN206801980U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561347A (en) * | 2018-05-31 | 2018-09-21 | 武汉船用机械有限责任公司 | A kind of oil cylinder hydraulic control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20180328 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |