CN203216523U - Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas - Google Patents
Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas Download PDFInfo
- Publication number
- CN203216523U CN203216523U CN 201320133625 CN201320133625U CN203216523U CN 203216523 U CN203216523 U CN 203216523U CN 201320133625 CN201320133625 CN 201320133625 CN 201320133625 U CN201320133625 U CN 201320133625U CN 203216523 U CN203216523 U CN 203216523U
- Authority
- CN
- China
- Prior art keywords
- gas
- port
- chamber
- control circuit
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The utility model provides a displacement type gas chamber for online monitoring of moisture content and density of SF6 gas. The displacement type gas chamber comprises a two-position three-way solenoid valve, a gas reservoir, a gas pump, a detection chamber, an enclosure, sensors, power supply signal interfaces and a control circuit. A second port of the two-position three-way solenoid valve can be in a conducing relationship or a non-conducting relationship with a first port of the two-position three-way solenoid valve; a third port of the two-position three-way solenoid valve can be in a conducing relationship or a non-conducting relationship with the first port of the two-position three-way solenoid valve; the second port is connected with a gas inlet of the detection chamber through a pipeline; a gas outlet of the detection chamber is communicated with a gas inlet of a gas pump through a pipeline; a gas outlet of the gas pump, the third port and the gas reservoir are communicated with one another through a tee joint and pipelines; the sensors arranged in the detection chamber are electrically connected with the control circuit in the enclosure on the detection chamber; and the control circuit is electrically connected with the gas pump and the two-position three-way solenoid valve through the power supply signal interfaces and cables on the enclosure. Without increase of interfaces of equipment, the displacement type gas chamber can realize displacement of gas in a detected-gas chamber and the detection gas chamber and measure the moisture content, temperature and density of SF6 gas accurately.
Description
Technical field
The utility model is specifically related to a kind of in high voltage electric power equip ment, is used for the micro-water content of on-line monitoring SF6 gas and the displaced type air chamber of gas density.
Background technology
The SF6(sulfur hexafluoride) gas has excellent insulativity and arc extinguishing, and it is widely used in gas-insulated switch (GIS) and the ehv power transmission equipment by people as insulation, arc-extinguishing medium.
In the process of SF6 high-tension apparatus long-time running, the SF6 gas in the equipment is through the outside leakage of regular meeting and the SF6 gas density in the electric equipment is descended, and micro-water content increases.When the micro-water content in the SF6 gas acquired a certain degree, under electric arc or corona effect, the analyte of SF6 gas can cause chemical corrosion to equipment through hydrolysis reaction toxigenicity gas, has a strong impact on the normal operation of equipment then.Simultaneously, the moisture in the gas generally exists with the water vapor form of gaseous state, and when temperature reduced, it condensed into liquid dew, is attached to piece surface, can cause along the face insulation flashover to cause accident.
Therefore, the micro-water content in monitoring in real time and the reasonable control SF6 gas, the density of SF6 gas in the real-time monitoring equipment, significant to guaranteeing device security stable operation.In recent years, along with the continuous development of detection technique, the detecting instrument of the SF6 gas micro-water content of transformer was more and more, yet wherein major part is based on the electrical type sensor of dew point.External also have by optics realize the report that micro-water content detects, the main still detection technique by infrared band realizes.
No matter be any detection mode, for the consideration of security, all the SF6 gas in the electrical equipment must be incorporated in the air chamber of sensor installation by valve, be convenient to after sensor goes wrong, change.This method can't exchange gas fast, and there are bigger difference in the micro-water content of sensor air chamber inside and inside electric appliance, can't accurately measure, and have lost the meaning of real-time measurement, have influenced the popularization of little water on-line measurement.Simultaneously, there is some difference for the measurement temperature of the air chamber of above-mentioned sensor installation and device interior temperature, makes the calculating of gas density error also occur.
Summary of the invention
At current air chamber can't the accurate response high voltage electric power equip ment problem of inner micro-water content, the utility model provides a kind of displaced type air chamber for the little water of SF6 gas, density on-line monitoring.
The utility model is achieved through the following technical solutions: a kind of for the little water of SF6 gas, the displaced type air chamber of density on-line monitoring, comprise two-position three way magnetic valve, air reservoir, air pump, detecting chamber, casing, sensor, power supply signal interface and control circuit, described two-position three way magnetic valve comprises first port, can with second port of the first port conducting and disconnection and can with the 3rd port of the first port conducting and disconnection, second port of described two-position three way magnetic valve is communicated with the air intake opening of described detecting chamber by pipeline, the gas outlet of described detecting chamber is communicated with the air intake opening of described air pump by pipeline, the gas outlet of described air pump, the 3rd port of described two-position three way magnetic valve and described air reservoir are by threeway and pipeline connection, described casing is fixedly connected on the described detecting chamber, described sensor is arranged in the described detecting chamber, described control circuit is arranged at the inside of described casing, described sensor is electrically connected with described control circuit, described power supply signal interface is arranged on the described casing, described control circuit is by described power supply signal interface and cable and described air pump, described two-position three way magnetic valve is electrically connected, and power supply is given described control circuit power supply by described power supply signal interface.
Described control circuit comprises teletransmission transtation mission circuit and the single-chip microcomputer of little water, temperature, pressure signal processing and Acquisition Circuit, two-position three way magnetic valve control circuit, air pump control circuit, signal.
Described sensor comprises temperature sensor, pressure transducer and micro-water content sensor.
Described temperature sensor, described pressure transducer and described micro-water content sensor are electronic sensor or Fibre Optical Sensor.
The beneficial effects of the utility model are: the utility model is on the basis that does not increase the detecting chamber interface, can measure micro-water content, temperature and the density of the inner SF6 gas of high voltage electric power equip ment strictly according to the facts, really realize real time on-line monitoring, do not increased sealing and the security that interface has also been guaranteed air chamber simultaneously.
Description of drawings
Fig. 1 is one-piece construction block diagram of the present utility model;
Fig. 2 is two-position three way magnetic valve working condition synoptic diagram.
In the drawings: the tested air chamber of 1-; 2-equipment valve; The 3-attachment valve; The 4-two-position three way magnetic valve; The 5-detecting chamber; The 6-air reservoir; The 7-air pump; The 8-sensor; The 9-control circuit; The 10-casing; 11-power pack signaling interface.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
As shown in Figure 1, a kind of micro-water content of SF6 gas and the on-Line Monitor Device of density, comprise two-position three way magnetic valve 4, air reservoir 6, air pump 7, detecting chamber 5, casing 10, sensor 8, power supply signal interface 11 and control circuit 9, two-position three way magnetic valve 4 comprises first port, can with the first port conducting and second port of closing and can with the first port conducting and the 3rd port of closing, second port of two-position three way magnetic valve 4 is communicated with by the air intake opening of pipeline with detecting chamber 5, the gas outlet of detecting chamber 5 is communicated with by the air intake opening of pipeline with air pump 7, the gas outlet of air pump 7, the 3rd port of two-position three way magnetic valve 4 and air reservoir 6 are by threeway and pipeline connection, casing 10 is fixedly connected on the detecting chamber 5, sensor 8 is arranged in the detecting chamber 5, control circuit 9 is arranged at the inside of casing 10, sensor 8 is electrically connected with control circuit 9, power supply signal interface 11 is arranged on the casing 10, control circuit 9 is by power supply signal interface 11 and cable and air pump 7, two-position three way magnetic valve 4 is electrically connected, and power supply gives control circuit 9 power supplies by power supply signal interface 11.
Wherein, control circuit 9 comprises teletransmission transtation mission circuit and the single-chip microcomputer of little water, temperature, pressure signal processing and Acquisition Circuit, two-position three way magnetic valve 4 control circuits 9, air pump 7 control circuits 9, signal, can also dispose display circuit as required.Sensor 8 comprises temperature sensor, pressure transducer and micro-water content sensor.Temperature sensor, pressure transducer and micro-water content sensor can be electronic sensors, also can be Fibre Optical Sensors.Power supply signal interface 11 connects on-the-spot display device, and power supply signal interface 11 can also be realized the teletransmission function by the remote transfer signal line.
As Fig. 1, shown in 2, tested air chamber 1 is communicated with first port of two-position three way magnetic valve 4 by equipment valve 2, attachment valve 3 and pipeline successively.In Fig. 1, first port of two-position three way magnetic valve 4, second port and the 3rd port are represented with A, B, C respectively.During work, equipment valve 2, attachment valve 3 are opened, the A end of control circuit 9 control two-position three way magnetic valves 4 disconnects with the A end with the conducting of B end, C end, and control air pump 7 is started working, SF6 gas in the tested air chamber 1 enters in the detecting chamber 5 by equipment valve 2, attachment valve 3 and two-position three way magnetic valve 4 successively, and part SF6 gas is compressed in the air reservoir 6 by air pump 7.After reaching certain pressure difference, single-chip microcomputer is in the A of control two-position three way magnetic valve 4 end and the disconnection of B end, C end and the conducting of A end, SF6 gas in the air reservoir 6 is got back in the tested air chamber 1 by two-position three way magnetic valve 4, attachment valve 3, equipment valve 2 successively, thereby finishes the displacement of gas in detecting chamber 5 and the tested air chamber 1.Realize the control of gas displacement number of times by the action of Single-chip Controlling equipment.After the displacement, detecting chamber 5 gets final product micro-water content, temperature and the density information of gas in the tested air chamber 1 of actual response several times.
The employed CPU of the utility model selects for use single-chip microcomputer commonly used to get final product, display panel is electron device commonly used, signal output port is according to the field control Demand Design, can be RS485 interface, RS232 interface or USB interface, teletransmission can select for use the RS485 interface to connect, and also optionally certainly uses the optical fiber teletransmission.
Should be noted that at last; above content is only in order to illustrate the technical solution of the utility model; but not to the restriction of the utility model protection domain; the simple modification that those of ordinary skill in the art carries out the technical solution of the utility model or be equal to replacement does not all break away from essence and the scope of technical solutions of the utility model.
Claims (4)
1. one kind is used for the little water of SF6 gas, the displaced type air chamber of density on-line monitoring, it is characterized in that: described for the little water of SF6 gas, the displaced type air chamber of density on-line monitoring comprises two-position three way magnetic valve, air reservoir, air pump, detecting chamber, casing, sensor, power supply signal interface and control circuit, described two-position three way magnetic valve comprises first port, can with second port of the first port conducting and disconnection and can with the 3rd port of the first port conducting and disconnection, second port of described two-position three way magnetic valve is communicated with the air intake opening of described detecting chamber by pipeline, the gas outlet of described detecting chamber is communicated with the air intake opening of described air pump by pipeline, the gas outlet of described air pump, the 3rd port of described two-position three way magnetic valve and described air reservoir are by threeway and pipeline connection, described casing is fixedly connected on the described detecting chamber, described sensor is arranged in the described detecting chamber, described control circuit is arranged at the inside of described casing, described sensor is electrically connected with described control circuit, described power supply signal interface is arranged on the described casing, described control circuit is by described power supply signal interface and cable and described air pump, described two-position three way magnetic valve is electrically connected, and power supply is given described control circuit power supply by described power supply signal interface.
2. the displaced type air chamber for the little water of SF6 gas, density on-line monitoring according to claim 1, it is characterized in that: described control circuit comprises teletransmission transtation mission circuit and the single-chip microcomputer of little water, temperature, pressure signal processing and Acquisition Circuit, two-position three way magnetic valve control circuit, air pump control circuit, signal.
3. the displaced type air chamber for the little water of SF6 gas, density on-line monitoring according to claim 1 and 2, it is characterized in that: described sensor comprises temperature sensor, pressure transducer and micro-water content sensor.
4. the displaced type air chamber for the little water of SF6 gas, density on-line monitoring according to claim 3, it is characterized in that: described temperature sensor, described pressure transducer and described micro-water content sensor are electronic sensor or Fibre Optical Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320133625 CN203216523U (en) | 2013-03-22 | 2013-03-22 | Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320133625 CN203216523U (en) | 2013-03-22 | 2013-03-22 | Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203216523U true CN203216523U (en) | 2013-09-25 |
Family
ID=49206050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320133625 Expired - Lifetime CN203216523U (en) | 2013-03-22 | 2013-03-22 | Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203216523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806902A (en) * | 2016-05-18 | 2016-07-27 | 国家电网公司 | On-line monitoring device for micro-water content of sulfur-hexafluoride circuit breaker |
| CN107807209A (en) * | 2017-11-20 | 2018-03-16 | 北京国网富达科技发展有限责任公司 | A kind of micro- water density monitoring device of gas |
-
2013
- 2013-03-22 CN CN 201320133625 patent/CN203216523U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806902A (en) * | 2016-05-18 | 2016-07-27 | 国家电网公司 | On-line monitoring device for micro-water content of sulfur-hexafluoride circuit breaker |
| CN107807209A (en) * | 2017-11-20 | 2018-03-16 | 北京国网富达科技发展有限责任公司 | A kind of micro- water density monitoring device of gas |
| CN107807209B (en) * | 2017-11-20 | 2024-05-14 | 北京国网富达科技发展有限责任公司 | Micro-water density monitoring device for gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207528861U (en) | A kind of status early warning device suitable for the detection of high-tension switch cabinet internal gas | |
| CN110174137A (en) | A kind of transformer monitoring device and method based on non electrical quantity comprehensive characteristics information | |
| CN102790429A (en) | On-line intelligent monitoring module for intelligent transformer substation GISs (gas insulated switchgear) | |
| CN106451191B (en) | A kind of gas-filling cabinet | |
| CN105865556B (en) | The detection method of sulfur hexafluoride gas leakage rate in a kind of GIS device | |
| CN203216523U (en) | Displacement type gas chamber for online monitoring of moisture content and density of SF6 gas | |
| CN202661229U (en) | Device for monitoring SF6 gas in ring main unit | |
| CN201653851U (en) | SF6 gas density transmitter and on-line monitoring system applying same | |
| CN109442225B (en) | Insulating gas online monitoring system and method for preventing and detecting pipeline leakage | |
| CN205808469U (en) | A kind of GIS on-line monitoring system | |
| CN204346980U (en) | A kind of detector for SF6 gas concentration on-line monitoring | |
| CN103308576A (en) | Sulfur hexafluoride decomposer tester | |
| CN203881673U (en) | Portable capsule replacement type micro-water measurement instrument | |
| CN103869710A (en) | Sulfur hexafluoride zero emission automatic gas supplementing and high voltage electrical equipment condition monitoring device | |
| CN202305501U (en) | Multipath round-robin gas analyzing and monitoring instrument | |
| CN102914488A (en) | Online monitoring device for mechanic-electrical integrated SF6 density moisture | |
| CN104500968A (en) | SF6 circuit breaker remote control online gas-replenishing and gas-bleeding system | |
| CN206192715U (en) | Sulfur hexafluoride gas sampling valve | |
| CN209878537U (en) | Micro-water density transmitter and SF using same6Micro-water density on-line monitoring system | |
| CN212646903U (en) | Online calibration device of gas density relay | |
| CN209542219U (en) | Sulfur hexafluoride leakage monitor | |
| CN106908188A (en) | A kind of GIS air pressure inside supervising devices based on temperature sensor | |
| CN209264067U (en) | Water-level probe and water level measurement system | |
| CN207472852U (en) | A kind of micro- water density monitoring device of gas | |
| CN202631009U (en) | SF6 gas online monitoring system for high voltage circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |