CN106225990B - Method for monitoring by using vacuum dew point intelligent monitoring device - Google Patents
Method for monitoring by using vacuum dew point intelligent monitoring device Download PDFInfo
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- CN106225990B CN106225990B CN201610801444.4A CN201610801444A CN106225990B CN 106225990 B CN106225990 B CN 106225990B CN 201610801444 A CN201610801444 A CN 201610801444A CN 106225990 B CN106225990 B CN 106225990B
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- dew point
- vacuum
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- vacuum gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/56—Investigating or analyzing materials by the use of thermal means by investigating moisture content
- G01N25/66—Investigating or analyzing materials by the use of thermal means by investigating moisture content by investigating dew-point
Abstract
The intelligent vacuum dew point monitoring device comprises a resistance vacuum gauge and a dew point meter which respectively take a vacuum gauge silicon tube and a dew point transmitter as measuring probes, an astronomical ammeter connected with the measuring input end of the dew point meter, an electrified delay time relay connected with a normally open switch of the astronomical ammeter in series, and a timing indicator lamp connected with a dynamic contact of the electrified delay time relay in series, wherein the vacuum gauge silicon tube and the dew point transmitter are connected with valves of a transformer and a reactor body. The invention provides an intelligent vacuum dew point monitoring device, which organically combines a resistance vacuum gauge and a dew point meter, and judges the vacuum retention time by monitoring the change conditions of the vacuum degree and the dew point value in real time in the processes of drying a transformer and a reactor and injecting oil in vacuum. Scientifically guides production, saves the occupation of equipment resources, determines the vacuum retention time on the premise of ensuring the product quality, improves the production efficiency and shortens the manufacturing period.
Description
Technical Field
The invention relates to the field of large-scale transformer and reactor production, in particular to a method for monitoring by using a vacuum dew point intelligent monitoring device.
Background
At present, in the production process of transformers and reactors, various transformer manufacturers in China need to vacuumize bodies after accessories are assembled, and moisture and internal air adsorbed on the surfaces of the transformer bodies in the installation process are removed. In the actual vacuum-pumping process, the vacuum-pumping maintaining time is usually regulated according to different voltage levels, for example, the 220kV product is vacuumized to 133Pa to start timing, and oil injection is started after 12h or 24h of maintenance. The method has non-uniform and non-strict standards and easily causes resource waste.
Disclosure of Invention
Aiming at the problems, the invention provides an intelligent monitoring device for a vacuum dew point.
In order to solve the problems, the invention adopts the technical scheme that: a method for monitoring by using a vacuum dew point intelligent monitoring device comprises the following steps: use resistance vacuum gauge and dew point transducer as measuring probe respectively with vacuum gauge silicon tube and dew point transducer, to vacuum and dew point value respectively carry out real-time supervision, with the yu ammeter that dew point transducer measurement input is connected, with the circular telegram delay time relay of yu ammeter normally open switch series connection, through the action of yu ammeter control circular telegram delay time relay to and the timing pilot lamp of circular telegram delay time relay make contact series connection, vacuum gauge silicon tube and dew point transducer connect in the valve department of transformer, reactor body, do not carry out real-time detection as the sensor to vacuum and dew point value respectively.
Preferably, the dew point meter is powered by a direct current stabilized power supply.
Preferably, the resistance vacuum gauge and the dew point meter are respectively provided with a vacuum gauge and an astronomical ammeter which take the vacuum degree and the dew point value as display objects, and the vacuum degree and the dew point value are respectively displayed in real time.
Preferably, the vacuum meter and the universal meter are arranged in the vacuum dew point intelligent monitor, and monitoring and checking are facilitated.
Preferably, the monitoring device is powered by a 220V alternating current power supply and is provided with a power indicator lamp for indicating the power connection state.
Preferably, the dew point transmitter is a model DMT242 available from VAILASA, Inc.
Preferably, the space meter adopts AI518AI4 model of Xiamen space electric company, and the measuring range is-80 to +20 ℃.
The invention provides an intelligent vacuum dew point monitoring device, which organically combines a resistance vacuum gauge and a dew point meter, and judges the vacuum retention time by monitoring the change conditions of the vacuum degree and the dew point value in real time in the processes of drying a transformer and a reactor and injecting oil in vacuum. Scientifically guides production, saves the occupation of equipment resources, determines the vacuum retention time on the premise of ensuring the product quality, improves the production efficiency and shortens the manufacturing period.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic view of a measurement probe installation of the present invention;
FIG. 3 is a schematic diagram of a control panel according to the present invention.
The intelligent monitoring system comprises a transformer, a reactor body, a vacuum dew point intelligent monitor, a timing indicator lamp, a power indicator lamp, a timer, a universal meter, a resistance vacuum gauge, a dew point instrument, a direct current stabilized power supply, a resistor, a dew point instrument, a direct current stabilized power supply, a power-on delay time relay, a normally open switch of the universal meter, a switch 211, a power-on delay time relay, a silicon tube of the vacuum gauge, a dew point transmitter, a silicon tube of the vacuum gauge, and a switch 4.
Detailed Description
As shown in the figure, the intelligent vacuum dew point monitoring device comprises a resistance vacuum gauge 25 and a dew point instrument 27 which respectively use a vacuum gauge silicon tube 3 and a dew point transmitter 4 as measuring probes, a space meter 24 connected with the measuring input end of the dew point instrument 27, an electrifying delay time relay 29 connected with a normally open switch 210 of the space meter in series, and a timing indicator lamp 21 connected with an electrifying delay time relay contact 211 in series, wherein the vacuum gauge silicon tube 3 and the dew point transmitter 4 are connected to valves of a transformer and a reactor body 1.
The monitoring device is powered by a 220V alternating current power supply and is provided with a power indicator lamp 22, the input end of a direct current stabilized power supply 28 is connected with the 220V alternating current power supply, the output end of the direct current stabilized power supply 28 is connected with the power supply end of a dew point instrument 27, and the dew point instrument 27 is powered by the direct current stabilized power supply 28; the display output end of the universal meter 24 is connected to the measurement input end of the dew-point instrument 27, the normally open switch 210 of the universal meter and the power-on time delay relay 29 form a first series branch, and the power-on time delay relay contact 211 and the timing indicator lamp 21 are connected in series to form a second series branch.
The valve at the dew point transmitter 4 is closed, the silicon tube 3 of the vacuum gauge and the dew point transmitter 4 are connected with the valves of the transformer and the reactor body 1, the silicon tube 3 of the vacuum gauge and the dew point transmitter 4 are respectively connected with the resistance vacuum gauge 25 and the dew point meter 27 through the measuring cable, the device is connected with the power supply through the power line, the power indicator lamp 22 is turned on, the device is started, and the time of the timer 23 is set. When the vacuum degree is less than 500Pa, the valve at the dew point transmitter 4 is opened, when the dew point value reaches the set requirement, the universal meter normally-open switch 210 acts, the power-on delay time relay 29 is electrified, and the closing time of the valve begins to be counted down. When the timing time is up, the power-on delay time relay makes the contact 211 closed, the timing indicator lamp 21 is on, the operator is prompted to close the valve when the valve is up, and the valve at the dew point transmitter 4 is closed. When the device is not used, the power switch is closed, the power supply is cut off, and then the measuring cable is cut off. The removal of moisture on the surface of the body and the vacuum retention time are determined by the degree of vacuum and the dew point value by organically combining the resistance vacuum gauge 25 and the dew point meter 27.
Claims (3)
1. A method for monitoring by using a vacuum dew point intelligent monitoring device is characterized in that the vacuum dew point intelligent monitoring device comprises: the resistance vacuum gauge (25) and the dew point meter (27) respectively take a vacuum gauge silicon tube (3) and a dew point transducer (4) as measuring probes, a universal meter (24) connected with the measuring input end of the dew point meter (27), a power-on delay time relay (29) connected with a normally open switch (210) of the universal meter in series, and a timing indicator lamp (21) connected with a power-on contact (211) of the power-on delay time relay in series, wherein the vacuum gauge silicon tube (3) and the dew point transducer (4) are connected to valves of a transformer and a reactor body (1); the resistance vacuum gauge (25) and the dew point meter (27) are respectively provided with a vacuum gauge (26) and an astronomical ammeter (24) which take the vacuum degree and the dew point value as display objects; the vacuum meter (26) and the space meter (24) are arranged in the vacuum dew point intelligent monitor (2);
a normally open switch (210) of the universal meter and an electrified delay time relay (29) form a first series branch, and a dynamic contact (211) of the electrified delay time relay is connected with a timing indicator lamp (21) in series to form a second series branch; a valve at the dew point transmitter (4) is closed, a silicon tube (3) of the vacuum gauge and the dew point transmitter (4) are connected with valves of a transformer and a reactor body (1), the silicon tube (3) of the vacuum gauge and the dew point transmitter (4) are respectively connected with a resistance vacuum gauge (25) and a dew point meter (27) through a measuring cable, the device is connected with a power supply through a power line, a power indicator lamp (22) is turned on, the device is started, and the time of a timer (23) is set; when the vacuum degree is less than 500Pa, a valve at the dew point transmitter (4) is opened, when the dew point value reaches a set requirement, a universal meter normally-open switch (210) acts, a power-on delay time relay (29) is powered on, and the closing time of the valve begins to be counted down; when the timing time is up, the power-on delay time relay closes the contact (211) to close, the timing indicator lamp (21) is on to prompt an operator that the valve closing time is up, and then the valve at the dew point transmitter (4) is closed.
2. The method for monitoring by using the intelligent vacuum dew point monitoring device as claimed in claim 1, wherein the method comprises the following steps: the dew point instrument (27) is powered by a direct current stabilized power supply (28).
3. The method for monitoring by using the intelligent vacuum dew point monitoring device as claimed in claim 1, wherein the method comprises the following steps: the monitoring device is powered by a 220V alternating current power supply and is provided with a power indicator lamp (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610801444.4A CN106225990B (en) | 2016-09-05 | 2016-09-05 | Method for monitoring by using vacuum dew point intelligent monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610801444.4A CN106225990B (en) | 2016-09-05 | 2016-09-05 | Method for monitoring by using vacuum dew point intelligent monitoring device |
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| CN106225990A CN106225990A (en) | 2016-12-14 |
| CN106225990B true CN106225990B (en) | 2022-03-08 |
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| CN111766013B (en) * | 2020-07-09 | 2021-11-30 | 苏州大观信息技术有限公司 | Intelligent vacuum meter, vacuum pressure intelligent monitoring system and monitoring method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337258A (en) * | 1998-05-27 | 1999-12-10 | Takashi Enkawa | Vacuum dryer |
| CN1796910A (en) * | 2004-12-24 | 2006-07-05 | 中国石油天然气集团公司 | Pipeline vacuum drying method and device |
| CN102364625A (en) * | 2011-10-31 | 2012-02-29 | 中国西电电气股份有限公司 | Device and method for preventing body of transformer from being dampened |
| CN203786069U (en) * | 2013-12-31 | 2014-08-20 | 中山凯旋真空技术工程有限公司 | Device for measuring effluent rate of vacuum drying treatment material |
| CN104332284A (en) * | 2014-10-16 | 2015-02-04 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Hot oil spray and drying device and method for converter transformer |
| CN206002247U (en) * | 2016-09-05 | 2017-03-08 | 山东电力设备有限公司 | A kind of vacuum dew point intelligent monitoring device |
-
2016
- 2016-09-05 CN CN201610801444.4A patent/CN106225990B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11337258A (en) * | 1998-05-27 | 1999-12-10 | Takashi Enkawa | Vacuum dryer |
| CN1796910A (en) * | 2004-12-24 | 2006-07-05 | 中国石油天然气集团公司 | Pipeline vacuum drying method and device |
| CN102364625A (en) * | 2011-10-31 | 2012-02-29 | 中国西电电气股份有限公司 | Device and method for preventing body of transformer from being dampened |
| CN203786069U (en) * | 2013-12-31 | 2014-08-20 | 中山凯旋真空技术工程有限公司 | Device for measuring effluent rate of vacuum drying treatment material |
| CN104332284A (en) * | 2014-10-16 | 2015-02-04 | 中国南方电网有限责任公司超高压输电公司天生桥局 | Hot oil spray and drying device and method for converter transformer |
| CN206002247U (en) * | 2016-09-05 | 2017-03-08 | 山东电力设备有限公司 | A kind of vacuum dew point intelligent monitoring device |
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