CN114962775A - Vibration detection device for valve rod of adjusting valve - Google Patents
Vibration detection device for valve rod of adjusting valve Download PDFInfo
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- CN114962775A CN114962775A CN202210698135.4A CN202210698135A CN114962775A CN 114962775 A CN114962775 A CN 114962775A CN 202210698135 A CN202210698135 A CN 202210698135A CN 114962775 A CN114962775 A CN 114962775A
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- valve
- vibration
- detection device
- rod
- valve rod
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention relates to the technical field of high and medium pressure valve rod vibration online monitoring, in particular to a valve rod vibration detection device, which comprises a vibration sensor, a signal collection and analysis device and a DSC control system, wherein the vibration sensor is arranged on a valve bracket, the output end of the vibration sensor is connected with the input end of the signal collection and analysis device, the output end of the signal collection and analysis device is connected with the input end of the DSC control system, and the output end of the DSC control system is connected with the adjusting end of a valve rod. The vibration sensor connected with the valve bracket is arranged, so that the vibration detection and early warning of the valve rod of the valve can be realized, the abnormality can be found in time conveniently, the vibration reason can be analyzed, measures can be taken as soon as possible for processing, and the load reduction, equipment damage or shutdown events can be avoided.
Description
Technical Field
The invention relates to the technical field of on-line monitoring of vibration of a valve rod of a high-pressure and medium-pressure regulating valve, in particular to a vibration detection device of the valve rod of the regulating valve.
Background
The regulating valve of the thermal power plant is a valve for controlling the rotating speed and the output power, and the rotating speed and the power are controlled by changing the amount of the steam entering the regulating valve. In order to ensure the continuity and stability of the rotation speed and the power, a plurality of valves are usually adopted, and the control purpose is achieved by sequentially opening or closing the valves.
Usually, a pre-opening valve is arranged in a main valve disc of the valve, and the pre-opening valve and a valve rod are formed by turning the same base material. The stroke of the pre-opening valve is ensured by turning and other assembly of the inner chamber of the main valve disc. When the valve is opened, the pre-opened valve is opened first, and steam flows in from the radial hole of the valve rod and goes down along the inside of the valve rod to balance the pressure difference between the front and the back. After the pre-opened valve is opened completely, the valve rod drives the main valve disc to move upwards to open the regulating valve. When the steam in the valve body flows abnormally, the valve rod is impacted to generate vibration.
The problems such as overlong closing time of the adjusting door, blocking of the adjusting door, untight closing of the adjusting door, breakage of the adjusting door valve rod, cracking of an adjusting door sleeve, air flow excitation of the adjusting door, sealing abrasion of the adjusting door rod, unreasonable opening and the like are judged by monitoring the vibration of the valve rod, so that preventive measures and treatment can be taken as soon as possible.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a valve rod vibration detection device for a throttle.
The invention is realized by the following technical scheme:
the utility model provides a transfer valve rod vibration detection device, includes vibration sensor, signal collection analytical equipment and DSC control system, the vibration sensor sets up on valve support, the output of vibration sensor and signal collection analytical equipment's signal interface connection, the output of signal collection analytical equipment is connected with DSC control system's input, DSC control system's output and the regulation end of valve rod are connected.
Preferably, the output end of the signal collection and analysis device is connected with the DSC control system through a signal transmission port.
Preferably, the signal collection and analysis device is provided with a display module for visual presentation of data results.
Preferably, the DSC control system is further provided with an early warning module, the input end of the early warning module is connected with the output end of the signal collection and analysis device, and the output end of the early warning module is connected with the input end of the display module.
Preferably, the output end of the early warning module is further connected with a signal lamp.
Preferably, when the detected vibration speed is less than 15mm/s, the signal lamp is in a extinguished state; when the detected vibration speed is greater than or equal to 15mm/s and less than 35mm/s, the signal lamp emits yellow light; when the detected vibration speed is greater than or equal to 35mm/s, the signal lamp emits red light.
Preferably, the vibration sensor is an optical fiber vibration monitoring sensor.
Preferably, the valve support comprises a door rod support and a valve rod which are connected, the valve rod is connected with the center of a cross rod of the door rod support, and the vibration sensor is arranged on the door rod support.
Preferably, the vibration sensor is arranged at the bottom of a vertical rod of the door rod support.
Preferably, the vibration sensor is arranged on an axis of a vertical rod of the door rod support.
Compared with the prior art, the invention has the following beneficial effects:
according to the vibration detection device for the valve rod of the valve, the vibration sensor connected with the valve support is arranged, vibration signals are collected through an information network and then are transmitted to a DCS (distributed control system) of a control room, so that the vibration detection and display of the valve rod of the valve are realized, the abnormality is found in time, the reason of vibration is analyzed, measures are taken as soon as possible to process, and the load reduction, equipment damage or shutdown events are avoided.
Furthermore, an optical fiber vibration monitoring sensor is adopted, one is convenient to install and maintain due to the compact structure and small size, and the other is high in vibration resolution and high in measurement precision so as to guarantee the monitoring accuracy.
Drawings
Fig. 1 is a schematic diagram of a valve stem vibration detection device of the invention.
In the figure, 1, the adjusting end of the valve rod; 2. a door rod support; 3. a valve stem; 4. a vibration sensor; 5. a valve body; 6. a signal interface; 7. a signal collection and analysis device; 8. a signal transmission port.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention discloses a vibration detection device for a valve rod of a throttle, which comprises a vibration sensor 4, a signal collection and analysis device 7 and a DSC control system, wherein the valve support comprises a door rod support 2 and a valve rod 3 which are connected, the valve rod 3 is connected with the center of a cross rod of the door rod support 2 in a sliding manner, and the vibration sensor 4 is arranged on the bottom of a vertical rod of the door rod support 2 and on the axis of the vertical rod.
An optical fiber vibration monitoring sensor is selected, the output end of the vibration sensor 4 is connected with a signal interface 6 of a signal collection and analysis device 7, the output end of the signal collection and analysis device 7 is connected with the input end of a DSC control system through a signal transmission port 8, and the output end of the DSC control system is connected with an adjusting end 1 of a valve rod.
The signal collection and analysis device 7 is provided with a display module for visual presentation of data results.
The DSC control system is also provided with an early warning module, the input end of the early warning module is connected with the output end of the signal collection and analysis device 7, and the output end of the early warning module is connected with the input end of the display module.
The output end of the early warning module is also connected with a signal lamp. A threshold value is set in the early warning module, and when the detected vibration speed is less than 15m/s, the signal lamp is in a turn-off state; when the detected vibration speed is greater than or equal to 15m/s and less than 35m/s, the signal lamp emits yellow light; when the detected vibration speed is greater than or equal to 35m/s, the signal lamp emits red light.
The implementation principle of the vibration detection device for the valve rod of the valve is as follows:
step 1: mounting of the vibration sensor 4: the vibration sensor 4 is mounted to the stem 3 support 2 with the vibration sensor 4 aligned with the central axis of the vertical post of the stem support 2.
Step 2: and (3) real-time measurement: through signal collection analytical equipment 7, after vibrating sensor 4 circular telegram, real-time supervision valve rod 3's vibration state to look over vibration frequency spectrum, wave form etc. at the display module.
And step 3: and (3) detection: and transmitting the vibration signals collected by the vibration sensor 4 to a signal collecting, analyzing and displaying device, and transmitting the vibration signals to a DCS control system through a signal transmission port.
When the vibration speed is less than or equal to 15mm/s and the measured value is less than 35mm/s, yellow early warning is given; the measured value is more than or equal to 35mm/s, and the red alarm is given.
The invention also discloses a method for detecting the vibration of the valve rod of the valve, which comprises the following steps:
s1, setting a threshold range corresponding to the working condition in the DSC control system according to the historical data of the vibration of the valve adjusting valve rod 3;
and S2, the valve rod vibration data detected in real time are processed by the signal collecting and analyzing device 7 and then transmitted to the DCS control system, and are matched with the threshold range, and then corresponding control signals are output.
The above description is only a preferred embodiment of the present invention, and it should be understood by those skilled in the art that the present invention is not limited to the above embodiments, but also includes various modifications and substitutions without departing from the spirit and principle of the present invention.
Claims (10)
1. The utility model provides a transfer valve rod vibration detection device, its characterized in that, includes vibration sensor (4), signal collection analytical equipment (7) and DSC control system, vibration sensor (4) set up on valve support, the output of vibration sensor (4) is connected with signal interface (6) of signal collection analytical equipment (7), the output of signal collection analytical equipment (7) is connected with DSC control system's input, DSC control system's output and the regulation end (1) of valve rod are connected.
2. The valve stem vibration detection device according to claim 1, wherein the output end of the signal collection and analysis device (7) is connected with the DSC control system through a signal transmission port (8).
3. The valve stem vibration detection device according to claim 1, characterized in that the signal collection and analysis device (7) is equipped with a display module for visual presentation of data results.
4. The valve rod vibration detection device of claim 3, wherein the DSC control system is further provided with an early warning module, an input end of the early warning module is connected with an output end of the signal collection and analysis device (7), and an output end of the early warning module is connected with an input end of the display module.
5. The valve stem vibration detection device of claim 4, wherein the output end of the early warning module is further connected with a signal lamp.
6. The vibration detecting device of the gate valve stem according to claim 5, wherein when the detected vibration speed is less than 15mm/s, the signal lamp is in an off state; when the detected vibration speed is greater than or equal to 15mm/s and less than 35mm/s, the signal lamp emits yellow light; when the detected vibration speed is greater than or equal to 35mm/s, the signal lamp emits red light.
7. The vibration detection device for the valve adjusting rod of the valve as claimed in claim 1, wherein the vibration sensor (4) is an optical fiber vibration monitoring sensor.
8. The vibration detection device for the valve adjusting rod of claim 1, characterized in that the valve support comprises a connected valve rod support (2) and a valve rod (3), the valve rod (3) is connected with the center of a cross rod of the valve rod support (2), and the vibration sensor (4) is arranged on the valve rod support (2).
9. The gate valve stem vibration detection device according to claim 1, characterized in that the vibration sensor (4) is arranged at the bottom of the vertical rod of the gate valve stem support (2).
10. The gate valve stem vibration detection device according to claim 1, characterized in that the vibration sensor (4) is arranged on the axis of the vertical rod of the door stem support (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210698135.4A CN114962775A (en) | 2022-06-20 | 2022-06-20 | Vibration detection device for valve rod of adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210698135.4A CN114962775A (en) | 2022-06-20 | 2022-06-20 | Vibration detection device for valve rod of adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114962775A true CN114962775A (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210698135.4A Pending CN114962775A (en) | 2022-06-20 | 2022-06-20 | Vibration detection device for valve rod of adjusting valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962340A (en) * | 2023-03-16 | 2023-04-14 | 杭州鄂达精密机电科技有限公司 | Intelligent fluid control valve and control method thereof |
-
2022
- 2022-06-20 CN CN202210698135.4A patent/CN114962775A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962340A (en) * | 2023-03-16 | 2023-04-14 | 杭州鄂达精密机电科技有限公司 | Intelligent fluid control valve and control method thereof |
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