CN202432070U - Servo valve system switching device - Google Patents
Servo valve system switching device Download PDFInfo
- Publication number
- CN202432070U CN202432070U CN2012200131767U CN201220013176U CN202432070U CN 202432070 U CN202432070 U CN 202432070U CN 2012200131767 U CN2012200131767 U CN 2012200131767U CN 201220013176 U CN201220013176 U CN 201220013176U CN 202432070 U CN202432070 U CN 202432070U
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- module
- servo valve
- servovalve
- servo
- valve system
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Abstract
The utility model discloses a servo valve system switching device. The servo valve system switching device comprises a CPU (central processing unit) module, a position follower, a remote input and output module, a servo system switching valve, a first servo valve system, a second servo valve system, a servo valve spool position feedback module, a pressure flow switching module, an interface switching module and a signal processing module, the position follower is connected with the CPU module, the remote input and output module is connected with the position follower, the servo system switching valve is connected with the remote input and output module, the first servo valve system and the second servo valve system are respectively connected with the servo system switching valve, the servo valve spool position feedback module is respectively connected with the first servo valve system and the second servo valve system, the pressure flow switching module is connected with the servo valve spool position feedback module, the interface switching module is connected with the pressure flow switching module, and the signal processing module is connected with the interface switching module and connected with the CPU module. The servo valve system switching device can guarantee that when a servo valve system of a hot straightening machine is in failure, automatic judgment is realized and the servo valve system is switched into a standby servo valve system.
Description
Technical field
The utility model relates to the abnormality detection of thermal straightening machine hydraulic press down system (be called for short LGC system) in the aligning working procedure, more specifically, is a kind of servovalve system COMM communication.
Background technique
Produce at the Plate Steel that is used for iron and steel, thermal straightening machine is important manufacturing mechanism.As shown in Figure 1, be the schematic representation that 10 pairs of steel plates of thermal straightening machine 20 carry out the thermal straightening operation.As shown in the figure, thermal straightening machine 10 uses four hydraulic pressure to depress master cylinder 11,12,13 and 14, and under normal circumstances, four master cylinders 11,12,13 and 14 position are by computer control, and the positional deviation between the master cylinder is held within the specific limits.If exceed the permissible error scope, it is unusual then to be considered to control.
Because the LGC systematic comparison of thermal straightening machine is complicated, when appearance control is unusual, can't confirm in the short time that system problem still is the servovalve problem, system problem comprises faults such as amplifier, feedback mechanism, actuator here.Under the existing technology condition, can only take the method judged one by one earlier, judgement is that the electrohydraulic servo system of which master cylinder has produced problem.To distinguish system problem, or servovalve problem subsequently.The existing way that solves this query is with system's open loop, subsequent use independent DC power supply, supplies positive and negative different value electric current to servovalve again through multimeter, judges from the output situation of valve whether valve has problem.Therefore, system failure determining step is complicated, and the consumption time is longer.Because thermal straightening machine servovalve electrohydraulic system breaks down, and can't in time get rid of, this can cause major accidents such as thermal straightening machine top roll system inclination.
The model utility content
The purpose of the utility model is to solve the problems referred to above that when operation, exist in the existing thermal straightening machine hydraulic press down system, thereby a kind of novel servovalve system COMM communication is provided.
The servovalve system COMM communication of the utility model; The first servovalve system that comprise CPU module, the location following device that is connected with this CPU module, the long-range input/output module that is connected with this location following device, the servo-system switching valve that is connected with this long-range input/output module, is connected respectively with this servo-system switching valve and the second servovalve system, the valve core of servo valve position feedback module, the baric flow modular converter that is connected with this valve core of servo valve position feedback module, the interface modular converter that is connected with this baric flow modular converter and the signal processing module that is connected with this interface modular converter that are connected with the second servovalve system with this first servovalve system respectively, this signal processing module is connected with said CPU module.
Preferably, said CPU module is a Siemens TDC CPU551 processor module.
The servovalve system COMM communication of the utility model; In the time of can guaranteeing to break down in thermal straightening machine servovalve system; Realize judging automatically and switching to subsequent use servovalve system; Thereby avoided master cylinder misoperation, and recovered the normal function of thermal straightening machine from function owing to thermal straightening machine hydraulic press down systems that reason produced such as servovalve deterioration, working environment instabilities.
Description of drawings
The view that Fig. 1 depresses for thermal straightening machine hydraulic pressure;
Fig. 2 is the composition schematic representation of the servovalve system COMM communication of the utility model.
Embodiment
Below in conjunction with accompanying drawing, the composition and the working principle of the servovalve system COMM communication of the utility model is elaborated.
As shown in Figure 2; The servovalve system COMM communication of the utility model; The first servovalve system 151 that comprise CPU module 110, the location following device 120 that is connected with this CPU module 110, the long-range input/output module 130 that is connected with this location following device 120, the servo-system switching valve 140 that is connected with this long-range input/output module 130, is connected respectively with this servo-system switching valve 140 and the second servovalve system 152, the valve core of servo valve position feedback module 160, the baric flow modular converter 170 that is connected with this valve core of servo valve position feedback module 160, the interface modular converter 180 that is connected with this baric flow modular converter 170 that are connected with the second servovalve system 152 with this first servovalve system 151 respectively and the signal processing module 190 that is connected with this interface modular converter 180, this signal processing module 190 is connected with CPU module 110.
More specifically, CPU module 110 data that are used for signal processing module is sent are carried out logical process and output.One preferred embodiment in, CPU module 110 is a Siemens TDC CPU551 processor module.Signal processing module 190 is complementary with CPU module 110, is used for the signal of various types of different sizes is carried out signal acquisition process.One preferred embodiment in, signal processing module adopts SM500 type signal processing module.
Interface modular converter 180 is used for through interface conversion, makes the electrical apparatus interface of on-site signal consistent with signal processing module.One preferred embodiment in, interface modular converter adopts SU13 type interface modular converter.
Baric flow modular converter 180 is used to carry out current/voltage-converted.One preferred embodiment in, baric flow modular converter 180 adopts ARM-05 baric flow transducers, its built-in 500 Ohmic resistances are used for the feedback current of 4-20mA is converted into the voltage of 2-10V.
Valve core of servo valve position feedback module 160 is used for two servovalve systems, and promptly the valve element position of the first servovalve system 151 and the second servovalve system 152 feeds back.It can produce the feedback current of 4-20mA, and sets the position when electric current during at 12mA, and the spool of servovalve is in meta.
The servovalve system switching valve 140 and the first servovalve system 151 and the second servovalve system 152 are provided to each master cylinder of thermal straightening machine, are used for actuator is controlled.In the first servovalve system 151 and the second servovalve system 152 one of them is work servovalve system, and another is a subsequent use work servovalve system.Through the switching of servovalve system switching valve 140, master cylinder can be set at the first servovalve system 151 or the second servovalve system 152 with its work servovalve.Be judged as when unusual in current work servovalve system 151 or 152,, can work servovalve system be switched to another servovalve system 152 or 151 through the switching of servovalve system switching valve 140.
Long-range input/output module 130 is used for through long-range input/output interface signal being transferred to the servo-system switching valve; The servo-system switching valve is according to the switching signal of receiving; To two servovalve systems, promptly the first servovalve system 151 and the second servovalve switched system 152 switch.One preferred embodiment in, long-range input/output module 130 adopts the long-range input/output interface of ET200 types.
Utilize the servovalve system COMM communication of the utility model, can judge, and accomplish switching from fault servovalve system to subsequent use servovalve system to the fault of thermal straightening machine hydraulic press down system, thus the proper functioning of the system of assurance.Particularly, servovalve system COMM communication compares according to the control current direction of servovalve and the position feedback of servovalve, and judges in real time, when two when inconsistent, thinks current servovalve system existing problems.For example; If current use is the first servovalve system 151, to servo-system switching valve 140 send the control command of switching-over through the control of CPU module 110 this moment; Thereby the Pilot operated check valve of the first servovalve system 151 is closed; Open the Pilot operated check valve of the second servovalve system, 152 correspondences simultaneously, thereby control, thereby realize the switching between the servovalve system by the top roll system of 152 pairs of thermal straightening machines of second servovalve.
In sum; Utilize the servovalve system COMM communication of the utility model; In the time of can guaranteeing to break down, realize judging automatically and switching to subsequent use servovalve system, thereby avoided master cylinder misoperation owing to thermal straightening machine hydraulic press down systems that reason produced such as servovalve deterioration, working environment instabilities in thermal straightening machine servovalve system; And recovered the normal function of thermal straightening machine from function; But guaranteed the state of its long-term work under strong motion, high load, avoided relevant device to damage the generation of phenomenon simultaneously again, guaranteed the normal and stable operation of equipment and production.
Claims (2)
1. servovalve system COMM communication; It is characterized in that; The first servovalve system that comprise CPU module, the location following device that is connected with this CPU module, the long-range input/output module that is connected with this location following device, the servo-system switching valve that is connected with this long-range input/output module, is connected respectively with this servo-system switching valve and the second servovalve system, the valve core of servo valve position feedback module, the baric flow modular converter that is connected with this valve core of servo valve position feedback module, the interface modular converter that is connected with this baric flow modular converter and the signal processing module that is connected with this interface modular converter that are connected with the second servovalve system with this first servovalve system respectively, this signal processing module is connected with said CPU module.
2. servovalve according to claim 1 system COMM communication is characterized in that said CPU module is a Siemens TDC CPU551 processor module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200131767U CN202432070U (en) | 2012-01-13 | 2012-01-13 | Servo valve system switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200131767U CN202432070U (en) | 2012-01-13 | 2012-01-13 | Servo valve system switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202432070U true CN202432070U (en) | 2012-09-12 |
Family
ID=46781516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200131767U Expired - Lifetime CN202432070U (en) | 2012-01-13 | 2012-01-13 | Servo valve system switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202432070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666899A (en) * | 2019-10-16 | 2021-04-16 | 新特能源股份有限公司 | Control method and system of regulating valve group, electronic equipment and storage medium |
-
2012
- 2012-01-13 CN CN2012200131767U patent/CN202432070U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666899A (en) * | 2019-10-16 | 2021-04-16 | 新特能源股份有限公司 | Control method and system of regulating valve group, electronic equipment and storage medium |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |
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| CX01 | Expiry of patent term |