CN212964003U - Device for rapidly detecting valve seating condition - Google Patents
Device for rapidly detecting valve seating condition Download PDFInfo
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- CN212964003U CN212964003U CN202021183140.4U CN202021183140U CN212964003U CN 212964003 U CN212964003 U CN 212964003U CN 202021183140 U CN202021183140 U CN 202021183140U CN 212964003 U CN212964003 U CN 212964003U
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Abstract
The invention belongs to the field of machinery, and particularly relates to a device for rapidly detecting a valve seating condition. At present, the valve is quite common when being incorrectly seated, serious consequences such as internal leakage of the valve, incapability of normally opening the valve and the like can be caused, and the valve is difficult to accurately distinguish through a conventional technical method. The device comprises a thrust sensor, a displacement sensor and a data analyzer; the thrust sensor is connected with the strain signal isolation module, and the strain signal isolation module is connected with the voltage signal acquisition module; the displacement sensor is connected with the voltage signal acquisition module, the voltage signal acquisition module is connected with the data processing module, and the data processing module is connected with the operation display panel. The invention has simple and convenient operation and automatic fault identification and alarm, solves the problems of high price, complex operation and the like of the existing equipment, and can test other faults such as too large/too small valve seating force, too large/too small/aggravated friction force, too large/too small stroke, jamming and the like.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to a device for rapidly detecting a valve seating condition.
Background
The valves are widely used in industrial systems such as nuclear power plants and the like, are various and frequent in various faults, and need to be diagnosed and determined through technical equipment such as special valve diagnosis tests and on-line detection (infrared, acoustic emission and the like), but the technical equipment is complex in operation, data analysis and the like, high in use cost, most of the valves are used for comprehensive fault diagnosis of the valves at present, and are difficult to popularize and apply, so that great potential safety hazards are caused to the industrial systems such as the nuclear power plants and the like. In various typical faults, the valve is quite common when being incorrectly seated, so that serious consequences such as internal leakage of the valve, incapability of normally opening the valve and the like can be caused, and the valve is difficult to accurately distinguish through a conventional technical method.
The invention mainly aims at the problems, provides a set of method and device for quickly detecting the valve seating condition, combines a clamp type thrust sensor ZL201721863398.7 of nuclear power operation technology of nuclear power operation institute/Zhongheu Wuhan, and a double-support column type clamp type thrust sensor ZL 201721857706.5 of nuclear power operation technology, can be applied to valve operation or debugging, does not influence the normal operation of the valve, is simple and convenient to operate, automatically identifies faults and gives an alarm, and is suitable for various valves.
Disclosure of Invention
1. The purpose is as follows:
the invention aims to provide a set of method and device for rapidly detecting the valve seating condition, which comprises a power valve, a manual valve and the like, tests the valve during operation or debugging, does not influence the normal operation of the valve, is simple and convenient to operate, automatically identifies and alarms faults, solves the problems of high price, complex operation and the like of the existing equipment, and can test other faults such as too large/too small valve seating force, too large/too small/aggravated friction force, too large/too small stroke, jamming and the like.
2. The technical scheme is as follows:
the technical scheme of the invention is as follows: a device for rapidly detecting the valve seating condition comprises a thrust sensor, a displacement sensor and a data analyzer; the thrust sensor is connected with the strain signal isolation module, and the strain signal isolation module is connected with the voltage signal acquisition module; the displacement sensor is connected with the voltage signal acquisition module, the voltage signal acquisition module is connected with the data processing module, and the data processing module is connected with the operation display panel.
The thrust sensor is arranged on the valve rod of the valve and synchronously acts along with the valve rod.
The displacement sensor is arranged on a valve rod or a stroke indicating rod of the valve and synchronously acts along with the valve rod.
The strain signal isolation module provides a standard excitation power supply for the thrust sensor and converts mV and uV level strain voltage signals output by the thrust sensor into industrial standard voltage signals.
The thrust sensor comprises a clamp type thrust sensor and a double-support column type clamp type thrust sensor, and a Wheatstone bridge circuit in full-bridge or half-bridge configuration is formed by four resistance strain gauges.
The data analyzer comprises a strain signal isolation module, a voltage signal acquisition module, a data processing module and an operation display panel; the operation display panel is provided with human-computer interaction software.
The invention has the following remarkable effects: the portable data analyzer is small in size and similar to a digital multimeter, but the touch screen operation display panel of the portable data analyzer is large in size, can display a valve thrust and a displacement curve besides specific numerical values, does not judge whether a valve is correctly seated based on single thrust, and can automatically judge faults and manually analyze difficult faults according to the actual action stroke distance of the valve, so that the correctness of data and conclusion is ensured, and human errors are avoided. During detection, the components of the valve are not disassembled, the detection speed is high, and 1-time valve seating condition detection can be completed in 1 minute; the stress sensor can be quickly disassembled and assembled on the valve rod in the valve yoke with narrow space, and the valve rod clamp with one movable end can enable the sensor to be suitable for valve rods with different diameters in a certain range.
Drawings
FIG. 1 is a schematic diagram of a system for rapid detection of a valve seating condition in accordance with the present invention;
fig. 2 is a schematic view of the installation of the clamp-type thrust sensor of the present invention on a valve.
In the figure: 1. the device comprises a valve to be tested, 2, a thrust sensor, 3, a displacement sensor, 4, a data analyzer, 101, a yoke, 102, a valve rod, 401, a strain signal isolation module, 402, a voltage signal acquisition module, 403, a data processing module, 404 and an operation display panel.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 2, the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.
A device for rapidly detecting the valve seating condition comprises a thrust sensor 2 (a clamp type or a double support column type), a displacement sensor 3, a portable data analyzer 4 and the like. During detection, the valve 1 is usually installed in a pipeline system and can not be detached. The thrust sensor 2 is connected with a strain signal isolation module 401, and the strain signal isolation module 401 is connected with a voltage signal acquisition module 402. The displacement sensor 3 is connected with a voltage signal acquisition module 402, the voltage signal acquisition module 402 is connected with a data processing module 403, and the data processing module 403 is connected with an operation display panel 404.
The thrust sensor 2 is arranged on the valve rod 102 of the valve, and can not touch the parts such as the valve yoke 101 and the like along with the synchronous action of the valve rod 102, so that the normal work of the valve 1 is not influenced.
The displacement sensor 3 is arranged on a valve rod 102 or a stroke indicating rod, and can not touch the valve yoke 101 and other parts along with the valve rod 102, so that the normal work of the valve 1 is not influenced.
The strain signal isolation module 401 provides a standard excitation power supply for the thrust sensor 2, and converts mV and uV level strain voltage signals output by the thrust sensor 2 into industry standard voltage signals.
The thrust sensor 2 comprises a clamp type thrust sensor and a double-support column type clamp type thrust sensor, a Wheatstone bridge circuit in full-bridge or half-bridge configuration is formed by four resistance strain gauges, when the valve rod 102 deforms radially towards thrust, the resistance values of the resistance strain gauges change, the Wheatstone bridge loses balance, and the thrust sensor 2 outputs corresponding mV and uV level strain voltage signals.
The portable data analyzer 4 comprises a strain signal isolation module 401, a voltage signal acquisition module 402, a data processing module 403 and an operation display panel 404, wherein the operation display panel 404 is provided with human-computer interaction software, the human-computer interaction software can automatically judge whether the valve is correctly seated according to the type and design parameters of the valve 1 to be detected, and other faults such as overlarge/undersize valve seating force, overlarge/undersize friction force, overlarge/undersize stroke and the like can be identified.
A method of rapidly detecting a valve seating condition, comprising the steps of:
the method comprises the following steps: installing a thrust sensor 2, clamping the thrust sensor 2 matched with the diameter of a valve rod 102 and the space of a valve yoke 101 on the valve rod 102, rotating an adjusting screw to clamp the valve rod 102, and applying a certain pretightening force;
step two: installing a displacement sensor 3, installing the displacement sensor 3 matched with the motion space of the valve 1 on the valve rod 102 or a stroke indicating rod, and synchronously acting with the valve rod 102;
step three: connecting signal cables with corresponding ports of the thrust sensor 2, the displacement sensor 3 and the portable data analyzer 4;
step four: operating the valve 1 to act, starting to synchronously acquire the thrust and the stroke of the valve rod of the valve 1, and transmitting the thrust and the stroke to the data analyzer operation display panel 404;
step five: the data analyzer 4 stores test data, automatically judges whether the valve is correctly seated according to the type and design parameters of the valve 1 to be tested, and simultaneously identifies other faults such as overlarge/undersize seating force, overlarge/undersize friction force, overlarge/undersize stroke and the like of the valve 1;
step six: and a detection report is automatically generated in the data analyzer 4, a fault is automatically alarmed and displayed, and a valve seating detection test is completed once.
Claims (6)
1. A device for rapidly detecting a seating condition of a valve, comprising: comprises a thrust sensor (2), a displacement sensor (3) and a data analyzer (4); the thrust sensor (2) is connected with the strain signal isolation module (401), and the strain signal isolation module (401) is connected with the voltage signal acquisition module (402); the displacement sensor (3) is connected with the voltage signal acquisition module (402), the voltage signal acquisition module (402) is connected with the data processing module (403), and the data processing module (403) is connected with the operation display panel (404).
2. A device for rapidly detecting a seating condition of a valve as defined in claim 1, wherein: the thrust sensor (2) is arranged on the valve rod (102) of the valve and synchronously acts with the valve rod (102).
3. A device for rapidly detecting a seating condition of a valve as defined in claim 1, wherein: the displacement sensor (3) is arranged on a valve rod (102) or a stroke indicating rod and synchronously acts with the valve rod.
4. A device for rapidly detecting a seating condition of a valve as defined in claim 1, wherein: the strain signal isolation module (401) provides a standard excitation power supply for the thrust sensor (2), and converts mV and uV strain voltage signals output by the thrust sensor (2) into industrial standard voltage signals.
5. A device for rapidly detecting a seating condition of a valve as defined in claim 1, wherein: the thrust sensor (2) comprises a clamp type thrust sensor and a double-support column type clamp type thrust sensor, and a Wheatstone bridge circuit in full-bridge or half-bridge configuration is formed by four resistance strain gauges.
6. A device for rapidly detecting a seating condition of a valve as defined in claim 1, wherein: the data analyzer (4) comprises a strain signal isolation module (401), a voltage signal acquisition module (402), a data processing module (403) and an operation display panel (404); the operation display panel (404) is provided with human-computer interaction software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021183140.4U CN212964003U (en) | 2020-06-23 | 2020-06-23 | Device for rapidly detecting valve seating condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021183140.4U CN212964003U (en) | 2020-06-23 | 2020-06-23 | Device for rapidly detecting valve seating condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212964003U true CN212964003U (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021183140.4U Active CN212964003U (en) | 2020-06-23 | 2020-06-23 | Device for rapidly detecting valve seating condition |
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| Country | Link |
|---|---|
| CN (1) | CN212964003U (en) |
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2020
- 2020-06-23 CN CN202021183140.4U patent/CN212964003U/en active Active
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