CN203067915U - Fault diagnosis device of valve actuating mechanism - Google Patents
Fault diagnosis device of valve actuating mechanism Download PDFInfo
- Publication number
- CN203067915U CN203067915U CN 201320039060 CN201320039060U CN203067915U CN 203067915 U CN203067915 U CN 203067915U CN 201320039060 CN201320039060 CN 201320039060 CN 201320039060 U CN201320039060 U CN 201320039060U CN 203067915 U CN203067915 U CN 203067915U
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- signal
- controller
- actuator
- liquid level
- controlling element
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Abstract
The utility model discloses a fault diagnosis device of a valve actuating mechanism. The fault diagnosis device comprises an actuator, a sensor and a controller, wherein the actuator is arranged at the inlet of a first water tank; the sensor is arranged at the top of a second water tank; a positioning signal is sent from the controller and transmitted to the actuator; the actuator receives the positioning signal, injects water into the first water tank, and sends a feedback signal to the controller; the sensor is used for monitoring the liquid level of the second water tank in real time and transmitting the liquid level signal to the controller; and the controller receives the feedback signal and the liquid level signal, carries out filtering on the liquid level signal, outputs a residual error, outputs actuator constant deviation change signal, an actuator constant gain change signal or an actuator jamming change signal via analyzing the residual error. The fault diagnosis device, disclosed by the utility model, is based on a state observer, realizes online fault diagnosis of the valve actuating mechanism, timely finds out faults generated during the operation of the valve actuating mechanism and outputs corresponding fault signals, thereby satisfying requirements in practical application.
Description
Technical field
The utility model relates to the automatic control field, relates in particular to a kind of trouble-shooter of valve actuator.
Background technique
Control theory up to now all is based on actuator's hypothesis working properly, therefore the reliability of control system depends on the reliability of respective execution mechanisms, in case actuator breaks down, if can not get timely processing, gently then influence is produced and quality of product, and is heavy then may cause the generation of accident.Actuator is the sensing element in the automatic control system information output apparatus, and its working state directly has influence on the state of system.
In realizing process of the present utility model, find to exist at least in the prior art following shortcoming and defect:
The working environment complexity of actuator, abominable, distribute wide, quantity is big and the installation position is special, make actuator become one of weak link in the process control, be the easiest parts that break down in the system, only depend on manpower to go to find and repair actuator's fault to be difficult to accomplish timely and effective, can't guarantee the reliability of control system.
The model utility content
The utility model provides a kind of trouble-shooter of valve actuator, and this trouble-shooter has been realized the on-line fault diagnosis to valve actuator, in time finds the fault that exists in the running, sees for details hereinafter and describes:
A kind of trouble-shooter of valve actuator, described trouble-shooter comprises: final controlling element, sensor and controller,
Described final controlling element is arranged on the ingress of first tank, described sensor is arranged on the top of second tank, described controller sends framing signal and transfers to described final controlling element, and described final controlling element receives described framing signal and to the described first tank water filling, sends feedback signal to described controller; Described sensor is the liquid level of described second tank of monitoring in real time, and liquid level signal is transferred to described controller; Described controller receives described feedback signal and described liquid level signal, described liquid level signal is carried out filtering to be handled, the output residual error, by the analysis to described residual error, the permanent deviation variable signal of output final controlling element, the permanent change in gain signal of final controlling element or the stuck variable signal of final controlling element.
Described final controlling element is specially pneumatic control valve; Described sensor is specially radar level gauge.
The beneficial effect of the technological scheme that the utility model provides is: the utility model is based on the trouble-shooter of state observer, realized the on-line fault diagnosis to valve actuator, the fault that exists in timely its running of discovery, and export corresponding trouble signal, satisfied the needs in the practical application.
Description of drawings
Fig. 1 is a kind of work schematic representation of trouble-shooter of valve actuator;
Fig. 2 is a kind of structural representation of trouble-shooter of valve actuator.
In the accompanying drawing, the list of parts of each label representative is as follows:
1: final controlling element; 2: sensor;
3: controller; 4: the first tanks;
5: the second tanks.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below the utility model mode of execution is described in further detail.
In order to improve the reliability of control system, maintenance and Security need be set up the running state that a supervisory system is supervised The whole control system, constantly variation and the fault message of monitoring system.And then take measures necessary, the generation of anti-locking system catastrophic failure, and its prerequisite is the ability that supervisory system must have on-line monitoring and tracing trouble.
Referring to Fig. 1 and Fig. 2, a kind of trouble-shooter of valve actuator comprises: final controlling element 1, sensor 2 and controller 3,
Final controlling element 1 is arranged on the ingress of first tank 4, and sensor 2 is arranged on the top of second tank 5, and controller 3 sends framing signal and transfers to final controlling element 1, and final controlling element 1 receives framing signal and to 4 water fillings of first tank, sends feedback signal to controller 3; Sensor 2 is the liquid level of monitoring second tank 5 in real time, and liquid level signal is transferred to controller 3; Controller 3 receiving feedback signals and liquid level signal carry out filtering to liquid level signal and handle, the output residual error, and by the analysis to residual error, the permanent deviation variable signal of output final controlling element, the permanent change in gain signal of final controlling element or the stuck variable signal of final controlling element.
Further, in order to improve the versatility of trouble-shooter, final controlling element 1 can be pneumatic control valve; Sensor 2 can be radar level gauge.
Wave filter in the controller 3 carries out filtering to liquid level signal to be handled, by filtered signal output residual error, and concrete operating process, for conventionally known to one of skill in the art, the utility model embodiment does not do at this and gives unnecessary details.
The working principle of this trouble-shooter: when the actuator in the control system breaks down, wave filter in the controller 3 can not correctly reflect the system performance after breaking down, export residual error with non-vanishing, output error is observed just can determine whether to break down.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic representation of a preferred embodiment, above-mentioned the utility model embodiment sequence number does not represent embodiment's quality just to description.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. the trouble-shooter of a valve actuator is characterized in that, described trouble-shooter comprises: final controlling element, sensor and controller,
Described final controlling element is arranged on the ingress of first tank, described sensor is arranged on the top of second tank, described controller sends framing signal and transfers to described final controlling element, and described final controlling element receives described framing signal and to the described first tank water filling, sends feedback signal to described controller; Described sensor is the liquid level of described second tank of monitoring in real time, and liquid level signal is transferred to described controller; Described controller receives described feedback signal and described liquid level signal, described liquid level signal is carried out filtering to be handled, the output residual error, by the analysis to described residual error, the permanent deviation variable signal of output final controlling element, the permanent change in gain signal of final controlling element or the stuck variable signal of final controlling element.
2. the trouble-shooter of a kind of valve actuator according to claim 1 is characterized in that, described final controlling element is specially pneumatic control valve.
3. the trouble-shooter of a kind of valve actuator according to claim 1 is characterized in that, described sensor is specially radar level gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039060 CN203067915U (en) | 2013-01-24 | 2013-01-24 | Fault diagnosis device of valve actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320039060 CN203067915U (en) | 2013-01-24 | 2013-01-24 | Fault diagnosis device of valve actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067915U true CN203067915U (en) | 2013-07-17 |
Family
ID=48766699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320039060 Expired - Lifetime CN203067915U (en) | 2013-01-24 | 2013-01-24 | Fault diagnosis device of valve actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113298328A (en) * | 2020-02-19 | 2021-08-24 | 北京国电智深控制技术有限公司 | Method and device for detecting state of actuating mechanism |
-
2013
- 2013-01-24 CN CN 201320039060 patent/CN203067915U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113298328A (en) * | 2020-02-19 | 2021-08-24 | 北京国电智深控制技术有限公司 | Method and device for detecting state of actuating mechanism |
| CN113298328B (en) * | 2020-02-19 | 2024-02-06 | 北京国电智深控制技术有限公司 | Method and device for detecting state of actuating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |