CN203561333U - Valve displacement detection device for large-scale gas turbine - Google Patents
Valve displacement detection device for large-scale gas turbine Download PDFInfo
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- CN203561333U CN203561333U CN201320773824.3U CN201320773824U CN203561333U CN 203561333 U CN203561333 U CN 203561333U CN 201320773824 U CN201320773824 U CN 201320773824U CN 203561333 U CN203561333 U CN 203561333U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 description 6
- 238000013500 data storage Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
Disclosed is a valve displacement detection device for a large-scale gas turbine and the detection device belongs to the technical field of valve detection. The valve displacement detection device for the large-scale gas turbine aims at solving a problem that precision is poor when a manually operated method is adopted to detect gas valve displacement. The detection device includes a 24V/15V conversion power supply, a 15V/15V isolation power supply, a displacement sensor, an AD converter, an amplifying circuit, a photoelectric isolating circuit, a comparison circuit, a first voltage transducer, a second voltage transducer, a third voltage transducer, a first voltage and current transducer, a second voltage and current transducer and a display. The displacement sensor is used for detecting an opening signal of a gas turbine valve. Converted displacement signals of the first voltage transducer, the second voltage transducer, the third voltage transducer, the first voltage and current transducer and the second voltage and current transducer are all displayed through the display. The valve displacement detection device for the large-scale gas turbine is used for detection of gas turbine valve displacement.
Description
Technical field
The utility model relates to large-scale gas turbine valve displacement detector, belongs to valve detection technical field.
Background technology
The gas control valve of large-scale gas turbine is whole gas turbine operation and controls one of the most key equipment, after unit starting or large light maintenance to its regularly carry out shut-in time inspection, the opening time checks and dynamic sensitivity inspection is very necessary, above-mentioned inspection is all based upon the position row of valve is moved on the basis that opening information detects.More regular way is to set up check result electronic record at present, so that each laggard row of the large light maintenance of unit is with reference to contrast, can find in time like this problem that each valve exists, so that unit was eliminated potential safety hazard in rudiment before being not activated.
Conventionally, take millisecond the shut-in time of gas turbine valve and actuation time as unit, therefore the cycle of it being detected should be not more than 0.1 millisecond, and its detection system should have the functions such as continuous coverage, mass data storage, online oscillography, curve combining comparison and Event triggered.Yet the control cycle minimum of existing detection system is 40 milliseconds, this detection for gas turbine valve can not reach time requirement.The mode that adopts electrical secondmeter to detect steam turbine valve is merely able to detect its approximate time, can not detect its operation curve; By oscillographic mode, can only detect its operation waveform, not possess online triggering and mass data storage function.
At present, the displacement detecting work of valve is normally carried out by mode manually, and it is not high that it detects degree of accuracy, and inspection item can not meet the demands, and due to this mode more complicated, makes general user can not possess effective valve displacement detecting ability.
Summary of the invention
The utility model object is that to burnt gas valve, displacement detects in order to solve employing mode manually, and the problem of low precision provides a kind of large-scale gas turbine valve displacement detector.
Large-scale gas turbine valve displacement detector described in the utility model, it comprises 24V/15V conversion electric power, 15V/15V insulating power supply, displacement transducer, AD converter, amplifying circuit, photoelectric isolating circuit, comparator circuit, the first voltage transmitter, second voltage transmitter, tertiary voltage transmitter, the first electric current and voltage transmitter, second voltage current transducer and display
24V/15V conversion electric power is for being connected with 24V power supply and 24V voltage transitions being become to 15V voltage, 15V voltage after changing provides working power into 15V/15V insulating power supply, AD converter and photoelectric isolating circuit, and the 15V voltage after the isolation of 15V/15V insulating power supply output provides working power for amplifying circuit, photoelectric isolating circuit, comparator circuit, the first voltage transmitter, second voltage transmitter, tertiary voltage transmitter, the first electric current and voltage transmitter and second voltage current transducer;
Displacement transducer is for detection of the aperture signal of gas turbine valve, the valve opening signal output part of displacement transducer connects the input end of analog signal of AD converter, the digital signal output end of AD converter connects the displacement signal input end of amplifying circuit, the amplifying signal output terminal of amplifying circuit connects the first voltage transmitter simultaneously, second voltage transmitter, the first electric current and voltage transmitter, the displacement signal input end of second voltage current transducer, the amplifying signal output terminal of amplifying circuit also connects the first displacement signal input end of comparator circuit, the second shifting signal input end of comparator circuit connects the isolation signals output terminal of photoelectric isolating circuit, the displacement signal input end of photoelectric isolating circuit is for receiving the valve displacement signal of 4-20mA, the comparison signal output terminal of comparator circuit connects the displacement signal input end of tertiary voltage transmitter,
Displacement signal after the conversion of the first voltage transmitter, second voltage transmitter, tertiary voltage transmitter, the first electric current and voltage transmitter and second voltage current transducer all shows by display.
Described displacement transducer is three-wire system or four-wire system displacement transducer.
Advantage of the present utility model: the utility model is by the collection to valve displacement data, obtain valve opening state, it can provide reliable data for valve closing time check, opening time inspection and dynamic sensitivity inspection, testing result precision is high, and product structure is simple, expense is lower.
Accompanying drawing explanation
Fig. 1 is the theory diagram of large-scale gas turbine valve displacement detector described in the utility model.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, large-scale gas turbine valve displacement detector described in present embodiment, it comprises 24V/15V conversion electric power 1,15V/15V insulating power supply 2, displacement transducer 3, AD converter 4, amplifying circuit 5, photoelectric isolating circuit 6, comparator circuit 7, the first voltage transmitter 8, second voltage transmitter 9, tertiary voltage transmitter 10, the first electric current and voltage transmitter 11, second voltage current transducer 12 and display 13
24V/15V conversion electric power 1 is for being connected with 24V power supply and 24V voltage transitions being become to 15V voltage, 15V voltage after changing provides working power into 15V/15V insulating power supply 2, AD converter 4 and photoelectric isolating circuit 6, and the 15V voltage after the isolation of 15V/15V insulating power supply 2 output provides working power for amplifying circuit 5, photoelectric isolating circuit 6, comparator circuit 7, the first voltage transmitter 8, second voltage transmitter 9, tertiary voltage transmitter 10, the first electric current and voltage transmitter 11 and second voltage current transducer 12;
Displacement signal after the conversion of the first voltage transmitter 8, second voltage transmitter 9, tertiary voltage transmitter 10, the first electric current and voltage transmitter 11 and second voltage current transducer 12 all shows by display 13.
In present embodiment, the signal that the first voltage transmitter 8 and second voltage transmitter 9 gather for the displacement transducer 3 that directly output receives, it is output as 1-5V voltage signal; The signal that the first electric current and voltage transmitter 11 and second voltage current transducer 12 also gather for the displacement transducer 3 that directly output receives, it is output as the current signal of 4-20mA.Signal and the relatively rear final signal of selecting of other displacement transducer 4-20mA input signal that tertiary voltage transmitter 10 gathers for exporting the displacement transducer 3 described in present embodiment, the signal of this selection is higher displacement signal in two signals, selection course realizes by comparator circuit 7, and what tertiary voltage transmitter 10 was finally exported is 1-5V voltage signal.
Embodiment two: below in conjunction with Fig. 1, present embodiment is described, present embodiment is described further embodiment one, displacement transducer 3 is three-wire system or four-wire system displacement transducer described in present embodiment.
Claims (2)
1. a large-scale gas turbine valve displacement detector, it is characterized in that, it comprises 24V/15V conversion electric power (1), 15V/15V insulating power supply (2), displacement transducer (3), AD converter (4), amplifying circuit (5), photoelectric isolating circuit (6), comparator circuit (7), the first voltage transmitter (8), second voltage transmitter (9), tertiary voltage transmitter (10), the first electric current and voltage transmitter (11), second voltage current transducer (12) and display (13)
24V/15V conversion electric power (1) is for being connected with 24V power supply and 24V voltage transitions being become to 15V voltage, 15V voltage after changing is 15V/15V insulating power supply (2), AD converter (4) and photoelectric isolating circuit (6) provide working power, 15V voltage after the isolation of 15V/15V insulating power supply (2) output is amplifying circuit (5), photoelectric isolating circuit (6), comparator circuit (7), the first voltage transmitter (8), second voltage transmitter (9), tertiary voltage transmitter (10), the first electric current and voltage transmitter (11) and second voltage current transducer (12) provide working power,
Displacement transducer (3) is for detection of the aperture signal of gas turbine valve, the valve opening signal output part of displacement transducer (3) connects the input end of analog signal of AD converter (4), the digital signal output end of AD converter (4) connects the displacement signal input end of amplifying circuit (5), the amplifying signal output terminal of amplifying circuit (5) connects the first voltage transmitter (8) simultaneously, second voltage transmitter (9), the first electric current and voltage transmitter (11), the displacement signal input end of second voltage current transducer (12), the amplifying signal output terminal of amplifying circuit (5) also connects the first displacement signal input end of comparator circuit (7), the second shifting signal input end of comparator circuit (7) connects the isolation signals output terminal of photoelectric isolating circuit (6), the displacement signal input end of photoelectric isolating circuit (6) is for receiving the valve displacement signal of 4-20mA, the comparison signal output terminal of comparator circuit (7) connects the displacement signal input end of tertiary voltage transmitter (10),
Displacement signal after the conversion of the first voltage transmitter (8), second voltage transmitter (9), tertiary voltage transmitter (10), the first electric current and voltage transmitter (11) and second voltage current transducer (12) all shows by display (13).
2. large-scale gas turbine valve displacement detector according to claim 1, is characterized in that, described displacement transducer (3) is three-wire system or four-wire system displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773824.3U CN203561333U (en) | 2013-11-29 | 2013-11-29 | Valve displacement detection device for large-scale gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773824.3U CN203561333U (en) | 2013-11-29 | 2013-11-29 | Valve displacement detection device for large-scale gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561333U true CN203561333U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320773824.3U Expired - Fee Related CN203561333U (en) | 2013-11-29 | 2013-11-29 | Valve displacement detection device for large-scale gas turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953399A (en) * | 2014-05-19 | 2014-07-30 | 国家电网公司 | Monitoring device and online monitoring method of quick closing process of steam turbine inlet valve |
| CN108151771A (en) * | 2017-12-20 | 2018-06-12 | 哈尔滨广瀚燃气轮机有限公司 | A kind of gas turbine throttle position transmitter |
| CN115682955A (en) * | 2022-11-10 | 2023-02-03 | 江西昌河航空工业有限公司 | Device and method for detecting displacement of helicopter steering engine |
-
2013
- 2013-11-29 CN CN201320773824.3U patent/CN203561333U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953399A (en) * | 2014-05-19 | 2014-07-30 | 国家电网公司 | Monitoring device and online monitoring method of quick closing process of steam turbine inlet valve |
| CN103953399B (en) * | 2014-05-19 | 2016-10-26 | 国家电网公司 | A kind of turbine admission valve quick closing valve process monitoring equipment and on-line monitoring method |
| CN108151771A (en) * | 2017-12-20 | 2018-06-12 | 哈尔滨广瀚燃气轮机有限公司 | A kind of gas turbine throttle position transmitter |
| CN115682955A (en) * | 2022-11-10 | 2023-02-03 | 江西昌河航空工业有限公司 | Device and method for detecting displacement of helicopter steering engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 |