CN204302106U - Install the permanent on-load pressure testing machine control system of quick oil return function additional - Google Patents
Install the permanent on-load pressure testing machine control system of quick oil return function additional Download PDFInfo
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- CN204302106U CN204302106U CN201420838561.4U CN201420838561U CN204302106U CN 204302106 U CN204302106 U CN 204302106U CN 201420838561 U CN201420838561 U CN 201420838561U CN 204302106 U CN204302106 U CN 204302106U
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- testing machine
- pressure testing
- reversal valve
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Abstract
The utility model relates to a kind of permanent on-load pressure testing machine control system installing quick oil return function additional, it comprises controller, controller connects proportioning valve and host computer, described proportioning valve is arranged on the oil circuit between oil cylinder and fuel tank, the output of described controller also connects reversal valve, oil cylinder there is an independent oil return pipe be connected to described reversal valve, be connected to fuel tank through described reversal valve.Its advantage is: by installing independent oil cylinder oil return control loop additional, accelerates the function that piston declines when achieving oil return.Whole oil return controlling unit is all carried out automatically by pressure testing machine control software design, does not need manual intervention, raising efficiency; Be applicable to the occasion of large-tonnage large tank pressure testing machine.
Description
Technical field
The utility model relates to a kind of control system of permanent on-load pressure testing machine, specifically a kind of permanent on-load pressure testing machine control system having installed quick oil return function additional.
Background technology
In recent years, the application of permanent on-load pressure testing machine in testing machine industry is more and more general, and traditional Non-follow control scheme is just progressively moved towards to eliminate.In the automatic control scheme of pressure testing machine, a kind of popular scheme is electrichydraulic control, upper and lower computer scheme.Namely do slave computer with a special controller, realize the collection of pressure sensor signal, the opening of hydraulic control proportioning valve realizes the control to flow.A computer, as host computer and the communication of slave computer controller, is installed special control software design and is realized concrete control algolithm, the functions such as the storage of test data and inquiry in computer.In large-tonnage pressure testing machine occasion, because hydraulic jack volume is comparatively large, proportioning valve is limited flow when oil return, causes piston to decline slowly, affects service efficiency.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, a kind of permanent on-load pressure testing machine control system installing quick oil return function additional is provided, by installing independent oil cylinder oil return control loop additional, accelerate the function that piston declines when achieving oil return, be applicable to the pressure testing machine occasion of the large volume oil cylinder of large-tonnage.
According to the technical scheme that the utility model provides, the described permanent on-load pressure testing machine control system installing quick oil return function additional comprises controller, controller connects proportioning valve and host computer, described proportioning valve is arranged on the oil circuit between oil cylinder and fuel tank, it is characterized in that: the output of described controller also connects reversal valve, oil cylinder there is an independent oil return pipe be connected to described reversal valve, be connected to fuel tank through described reversal valve.
Concrete, described controller comprises programmable logic controller (PLC), and programmable logic controller (PLC) is connected to the control end of reversal valve by relay, is used for controlling the open and close of reversal valve.
Concrete, described computer with adopt RS232 serial ports between controller and be connected.
The utility model has the advantages that: have employed method oil cylinder installing independent oil return circuit additional, control the opening and closing in this loop with reversal valve.By computer controlled in time needing oil return, open reversal valve, realize proportioning valve loop and the binary channels oil return of reversal valve loop, the decrease speed of accelerating piston.
Accompanying drawing explanation
Fig. 1 is Control system architecture figure of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises computer 1, controller 2, reversal valve 3, proportioning valve 5.Controller 2 connects proportioning valve 5 and host computer 1, and described proportioning valve 5 is arranged on the oil circuit between oil cylinder 4 and fuel tank, and controller 2 can control ratio valve 5 action.The output of controller 2 also connects reversal valve 3, oil cylinder 4 has an independent oil return pipe be connected to described reversal valve 3, is connected to fuel tank through described reversal valve 3.
Described controller 2 comprises single-chip microcomputer or PLC, and single-chip microcomputer or PLC are connected to the control end of reversal valve 3 by relay, is used for controlling the open and close of reversal valve 3.
The special control software design of operating pressure testing machine in computer 1, adopts RS232 serial ports to carry out communication between computer 1 and controller 2.There is relay in controller 2, be used for controlling the open and close of reversal valve 3.Oil cylinder 4 has an independent oil return pipe be connected to reversal valve 3, the oil in oil cylinder 4 flows back to fuel tank by reversal valve 3.
The course of work is as follows:
1, during pressure testing machine normal load, computer 1 says the word to controller 2, and controller 2 control relay cuts out reversal valve 3.Oil in oil cylinder 4 not to reflux fuel tank by reversal valve 3.
2, tested, during unloading oil return, computer 1 says the word to controller 2, the oil return of controller 2 first control ratio valve 5, after time delay a period of time, to wait in oil cylinder 4 after pressure drop, control reversal valve 3 to open, realize proportioning valve loop and the binary channels oil return of reversal valve loop, accelerate piston and decline.
3, after time delay a period of time, computer 1 says the word to controller 2, and controller 2 cuts out reversal valve 3, waits for test operation next time.
In sum, the utility model, by installing independent road drainback passage and a control loop thereof additional, accelerates oil return speed during unloading, makes the operational efficiency of forcing press higher.Whole oil return controlling unit is all carried out automatically by pressure testing machine control software design, does not need manual intervention, raising efficiency.
Claims (3)
1. install the permanent on-load pressure testing machine control system of quick oil return function additional, comprise controller (2), controller (2) connects proportioning valve (5) and host computer (1), described proportioning valve (5) is arranged on the oil circuit between oil cylinder (4) and fuel tank, it is characterized in that: the output of described controller (2) also connects reversal valve (3), oil cylinder (4) there is an independent oil return pipe connect described reversal valve (3), connect fuel tank through described reversal valve (3).
2. install the permanent on-load pressure testing machine control system of quick oil return function as claimed in claim 1 additional, it is characterized in that, described controller (2) comprises single-chip microcomputer or programmable logic controller (PLC), described single-chip microcomputer or programmable logic controller (PLC) are connected to the control end of reversal valve (3) by relay, be used for control reversal valve (3) open and close.
3. install the permanent on-load pressure testing machine control system of quick oil return function as claimed in claim 1 additional, it is characterized in that, between described computer (1) with controller (2), adopt RS232 serial ports to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838561.4U CN204302106U (en) | 2014-12-24 | 2014-12-24 | Install the permanent on-load pressure testing machine control system of quick oil return function additional |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838561.4U CN204302106U (en) | 2014-12-24 | 2014-12-24 | Install the permanent on-load pressure testing machine control system of quick oil return function additional |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302106U true CN204302106U (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420838561.4U Active CN204302106U (en) | 2014-12-24 | 2014-12-24 | Install the permanent on-load pressure testing machine control system of quick oil return function additional |
Country Status (1)
| Country | Link |
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| CN (1) | CN204302106U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271289A (en) * | 2017-05-18 | 2017-10-20 | 苏州铁马自动化科技有限公司 | Pressure testing machine perseverance loading TT＆C system |
| CN113204228A (en) * | 2021-04-29 | 2021-08-03 | 无锡建仪仪器机械有限公司 | Pressure tester control system and method with data remote transmission function |
-
2014
- 2014-12-24 CN CN201420838561.4U patent/CN204302106U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271289A (en) * | 2017-05-18 | 2017-10-20 | 苏州铁马自动化科技有限公司 | Pressure testing machine perseverance loading TT＆C system |
| CN113204228A (en) * | 2021-04-29 | 2021-08-03 | 无锡建仪仪器机械有限公司 | Pressure tester control system and method with data remote transmission function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |