CN201177545Y - High-voltage circuit-breaker cut-off great current spout gas pressure characteristic measuring apparatus - Google Patents
High-voltage circuit-breaker cut-off great current spout gas pressure characteristic measuring apparatus Download PDFInfo
- Publication number
- CN201177545Y CN201177545Y CNU2008200119468U CN200820011946U CN201177545Y CN 201177545 Y CN201177545 Y CN 201177545Y CN U2008200119468 U CNU2008200119468 U CN U2008200119468U CN 200820011946 U CN200820011946 U CN 200820011946U CN 201177545 Y CN201177545 Y CN 201177545Y
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- sensor
- wireway
- characteristic measuring
- spout
- measurement point
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Abstract
The utility model provides a high pressure breaker heavy current drop-out lower nozzle gas pressure property measuring device. The gas temperature inside an arc extinguish chamber is increased up to 2, 000 DEG C and higher due to the existence of the heavy current in the drop-out process of the breaker, while the temperature that the prior sensor can bear is between 800 and 1, 000 DEG C. Therefore, in order to prevent a probe of the sensor from being contacted with the high temperature gas at the nozzle so that that the sensor is damaged, the nozzle wall is provided with a section of arc air guide pipe made of a polyfluortetraethylene material, and the probe of the controller is connected with one end of the air guide pipe, thereby guaranteeing the security of the sensor and facilitating the accurate measurement of the pressure property at the nozzle.
Description
Technical field
The utility model relates to the measurement mechanism of primary cut-out spout place gaseous tension characteristic, particularly it is cut-off the measurement mechanism of gas pressure characteristic under the big current conditions.
Background technology
In high-tension switch gear, the condition of work of isolating switch is the harshest, it not only will close comparatively continually in electric system and close or cut-off various little electric currents under the system voltage, as little capacitance current, small inductor electric current and normal load electric current, and to close reliably and close, cut-off the various fault currents that may occur in the system, as single-phase short circuit, line to line fault, close-in fault electric current and system's step-out fault current etc.Therefore the research to isolating switch is the most extensive the most deep, but laying particular emphasis on, most research sets up model, Theoretical Calculation, fewer for the experimental measurement that improves the isolating switch performance by gaseous tension characteristic in the arc-chutes in the research isolating switch interrupting process.Understanding the gaseous tension characteristic of arc-chutes in the actual interrupting process, is very necessary to the actual gas pressure characteristic process measurement of arc-extinguishing chamber of circuit breaker.
At present, relevant circuit-breaker testing all carries out under no-load condition.During unloaded the measurement, do not need to consider that temperature and electromagnetic interference (EMI) to the influence of sensor, only need sensor is directly installed on measurement point, measure by mechanical motion compression arc extinguishing indoor gas.But when measuring isolating switch and cut-off under the big current conditions arc-chutes gaseous tension characteristic, the big electric current that interrupting process is accompanied by 30～40kA exists, can make the gas temperature in the arc-chutes raise rapidly, and the limit tolerable temperature that has surpassed sensor from far away, if sensor is directly installed on the spout measurement point to be measured, sensor probe will inevitably damage, and this is very unfavorable to security measurement.Therefore should install safeguard additional at measurement point.
Summary of the invention
For solving the difficult problem of the too high damage sensor probe of above-mentioned isolating switch spout place's pressure survey temperature, the utility model will be installed the wireway of one section quadrant arc in the spout measurement point.The existence of wireway can avoid sensor probe directly to contact with the gas of high temperature on the one hand; On the other hand because the wireway inner volume is very little, the gas in the pipe seldom can not make the gas of high temperature enter wireway fast like this because of the convection current of gas and contact with popping one's head in the wireway.Wireway adopts the teflon the same with vent material to make, by screw thread wireway is connected with the spout wall, make them become as a whole, probe with sensor is threaded with the other end of wireway again, avoid directly contacting to reach sensor probe, prevent the purpose that sensor damages with high-temperature gas.Because spatial volume is very little in the arc-chutes, the shape of wireway should guarantee can be in the isolating switch motion process after the installation with scratching takes place on every side, guarantee the unobstructed of air-flow again, make measurement result can not produce big error, therefore to make 90 degree circular arcs the most suitable for wireway, and the turnover length at wireway two ends can adjust according to different situations.In addition, the wireway of circular shape can make gas communication smooth and easy, and then makes measurement result more accurate.
Structural design scheme of the present utility model is: make the wireway that is of moderate size according to the real space situation around the measurement point.The specific implementation process is: the spout measurement point is got out an internal thread according to selected size, again the wireway of making is got out the external thread that matches, wireway is screwed to the spout measurement point and makes it into as a whole wireway with fluid sealant sealing; The other end get out with sensor probe on the internal thread that is complementary of screw thread, again sensor probe is connected with the outlet of delivery line, this has just constituted the installation of measurement point.
The utility model advantage: simple in structure, employing is threaded, and is easy to install, can protect sensor can not damaged by high-temperature gas in measuring process.
Description of drawings
Fig. 1 is a kind of primary cut-out arc quenching chamber structure schematic diagram;
Among the figure, 1 piston, 2 air cylinders, 3 moving arcing contacts, 4 quiet arc contacts, 5 spouts, A spout measurement point.
The wireway structure principle chart of Fig. 2 for making;
Wherein the B end is connected with spout measurement point A, and the C end is connected with sensor probe.
Fig. 3 is a wireway and structural drawing after the spout measurement point links to each other;
Among the figure, 6 wireways.
Embodiment
The utility model detailed structure is illustrated in conjunction with the accompanying drawings and embodiments.
The breaker arc extinguishing cell structure as shown in Figure 1, wherein the A point is a spout place measurement point, owing to sensor probe directly can not be linked to each other with measurement point in cut-offfing cranking test, has according to circumstances made quadrant arc wireway as shown in Figure 2.Wherein the A point bores internal thread, and the air guide pipe B end bores the external thread that matches, and the B end is threaded with measurement point and adopts the fluid sealant sealing, prevents to leak gas; Structural drawing after the connection as shown in Figure 3.The C end of wireway is threaded with sensor probe, and sensor links to each other with the oscillograph of outside by lead, has so just constituted the measurement mechanism of arc-chutes measurement points.
Claims (4)
1, spout place gaseous tension characteristic measuring device under a kind of primary cut-out high-current on-off comprises sensor, oscillograph, it is characterized in that being connected with wireway between measurement point spout place and sensor.
2, spout place gaseous tension characteristic measuring device under the primary cut-out high-current on-off according to claim 1, by screw thread wireway is connected with the spout wall when it is characterized in that being connected of described wireway and spout measurement point, by screw thread wireway is connected with sensor probe during being connected of wireway one end and sensor.
3, spout place gaseous tension characteristic measuring device under the primary cut-out high-current on-off according to claim 1 is characterized in that described wireway and linking of measurement point need seal with glue.
4, spout place gaseous tension characteristic measuring device under the primary cut-out high-current on-off according to claim 1 is characterized in that the described wireway utilization teflon identical with vent material make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200119468U CN201177545Y (en) | 2008-04-03 | 2008-04-03 | High-voltage circuit-breaker cut-off great current spout gas pressure characteristic measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200119468U CN201177545Y (en) | 2008-04-03 | 2008-04-03 | High-voltage circuit-breaker cut-off great current spout gas pressure characteristic measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177545Y true CN201177545Y (en) | 2009-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200119468U Expired - Fee Related CN201177545Y (en) | 2008-04-03 | 2008-04-03 | High-voltage circuit-breaker cut-off great current spout gas pressure characteristic measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177545Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283461A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | A kind of experimental rig for the double gas chamber high-voltage switch gear break performances of simulation test |
| CN109283460A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | It is a kind of for testing the experimental rig of self extinguishing type high-voltage switch gear break performance |
| CN109283458A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | Self extinguishing type high-voltage switch gear break performance experimental rig |
| CN109283459A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | Double gas chamber high-voltage switch gear break performance simulation test devices |
| CN109425825A (en) * | 2017-08-16 | 2019-03-05 | 平高集团有限公司 | Double gas chamber double movement high voltages switch break performance simulation test device |
| CN109470402A (en) * | 2018-12-03 | 2019-03-15 | 三峡大学 | Medium Voltage Switchgear internal short-circuit arcing pressure effect indirect type measuring device |
| CN111192800A (en) * | 2020-01-08 | 2020-05-22 | 平高集团有限公司 | Pressure guide pipe for arc extinguishing chamber pressure measurement and arc extinguishing chamber pressure measurement device |
| CN111198072A (en) * | 2020-01-08 | 2020-05-26 | 平高集团有限公司 | Arc extinguishing chamber pressure measuring device and pressure guide pipe thereof |
| CN111272320A (en) * | 2020-02-07 | 2020-06-12 | 云南电网有限责任公司电力科学研究院 | High-pressure gas circuit breaker spout transient pressure testing arrangement |
-
2008
- 2008-04-03 CN CNU2008200119468U patent/CN201177545Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283461A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | A kind of experimental rig for the double gas chamber high-voltage switch gear break performances of simulation test |
| CN109283460A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | It is a kind of for testing the experimental rig of self extinguishing type high-voltage switch gear break performance |
| CN109283458A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | Self extinguishing type high-voltage switch gear break performance experimental rig |
| CN109283459A (en) * | 2017-07-19 | 2019-01-29 | 平高集团有限公司 | Double gas chamber high-voltage switch gear break performance simulation test devices |
| CN109425825A (en) * | 2017-08-16 | 2019-03-05 | 平高集团有限公司 | Double gas chamber double movement high voltages switch break performance simulation test device |
| CN109470402A (en) * | 2018-12-03 | 2019-03-15 | 三峡大学 | Medium Voltage Switchgear internal short-circuit arcing pressure effect indirect type measuring device |
| CN111192800A (en) * | 2020-01-08 | 2020-05-22 | 平高集团有限公司 | Pressure guide pipe for arc extinguishing chamber pressure measurement and arc extinguishing chamber pressure measurement device |
| CN111198072A (en) * | 2020-01-08 | 2020-05-26 | 平高集团有限公司 | Arc extinguishing chamber pressure measuring device and pressure guide pipe thereof |
| CN111272320A (en) * | 2020-02-07 | 2020-06-12 | 云南电网有限责任公司电力科学研究院 | High-pressure gas circuit breaker spout transient pressure testing arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20110403 |