CN2121017U - High-pressure steam manifold stage sensor - Google Patents
High-pressure steam manifold stage sensor Download PDFInfo
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- CN2121017U CN2121017U CN 92204592 CN92204592U CN2121017U CN 2121017 U CN2121017 U CN 2121017U CN 92204592 CN92204592 CN 92204592 CN 92204592 U CN92204592 U CN 92204592U CN 2121017 U CN2121017 U CN 2121017U
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- pressure steam
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Abstract
The utility model relates to a high-pressure steam manifold water level sensor adopting nuclear technology to conduct water level continuous measurement of a non-contact type, which comprises a switch handle (1), a radiation source (2), a source chamber shell body (3), a source plug (4), a cast lead (5), a connection hole (6), a measurement cylinder (7), a shield sleeve (8), a photomultiplier tube (9), an aviation plug (10), an air cooling tube (11) and a temperature sensor (12). The utility model has the advantages of convenient installation, simple calibrating adjustment, reliability, stabilization, no environmental condition influence on the measuring accuracy, etc. The environmental dose caused by the radiation source conforms to the national security protection criterion.
Description
Belong to high pressure steam water-level detection technique field.
About the detection problem of high pressure steam water-level, be the problem that not only had been much accounted of but also had not had fine solution so far from the fifties always.Water level is the very important parameter that guarantees the high-pressure boiler safe and reliable operation, when water level value is too high, will make high pressure supersaturated vapour band water, reduces Efficiency of Steam Turbine, can cause " driving " accident when serious; Water level value is crossed when hanging down, and will cause " booster " accident.If in case cause the accident, the loss that is caused is an example with twenty myriawatt, thousand units, both can reach more than tens million of units, every is once fiery, and its direct cost is also more than 1,000,000 yuan.For guaranteeing the safe and economical boiler operation, parallel simultaneously mostly two-colour fluviograph, electric contact point fluviograph, the differential pressure water level gauge etc. of adopting of the high pressure drum level measurement in domestic and international big-and-middle-sized power station.At present, these three kinds of water level gauges all exist certain defective, though have simple and reliable, can not continuous coverage, can't with the regulating system interface.Though what have can continuous coverage, but the relatively poor reaction time of precision is oversize, can't work during big or start and stop in the load change amplitude, all also exist simultaneously the big defective of maintenance, its reason is directly to contact with measured medium with regard to the sensing element that is above-mentioned three kinds of water level gauges, therefore, it is bigger to be subjected to the influence of medium and environmental baseline.
High pressure steam water-level sensor is to adopt nuclear technology, and water level is carried out contactless continuous coverage, and its measuring accuracy is not subjected to the influence of environmental baseline, and is reliable and stable, easy for installation, and maintenance workload is little.In addition, this sensor can also be under the situation that does not increase any auxiliary equipment, the Media density in the online detection drum of while, and this not only can be of some help to boiler operatiopn, also can be the multi-parameters test method and apparatus that design department provides a kind of practicality.
The structure of high pressure steam water-level sensor is to be made of switch knob (1), radiation source (2), chamber, source housing (3), source plug (4), casting plumbous (5), connecting hole (6), measurement tube (7), a bell housing (8), photomultiplier (9), aviation plug (10), forced air cooled tube (11) and temperature sensor (12) as shown in drawings.Chamber, source housing (3) is that external radius is 100mm, and inside radius is the cast iron spheroid of 90mm, and except that staying the space that radiation source (2) and source plug (4) are installed, all casting is full plumbous in the spheroid.Radiation source (2) is a radiomaterial
137C
S,, place the centre of sphere place of chamber, source housing (3) with the sealing of garden column type stainless steel.Source plug (4) is to be made of stainless steel bar and the plumbous body of garden cylindricality, and stainless steel bar connects switch knob (1), and column type plumbous body diameter in garden is 60mm, highly be 80mm, having diameter in a side of the plumbous body of garden cylindricality is 10mm, and the degree of depth is the hole, garden of 80mm, and the garden heart in hole, garden is concentric with radiation source (2).When switch knob (1) drive source plug (4) rotated, if hole, garden beyond the Great Wall, source is with radiation source (2) when concentric, the switch pointed was left, and the radiation source mistake is filled in when blocking by the source fully from the hole, garden, switch pointed pass.Chamber, source housing (3) ties with Luo with measurement tube (7) and connects, measuring tube (7) is to process with the shape of seamless alloy pipe by high pressure vessel requirement design, as shown in drawings, respectively there is a connecting hole (6) above and below of measuring tube (7), with the high pressure drum by weldless steel tube and there is valve control to be connected, constitute linker, during work, open valve, the water level of measuring in the tube (7) is consistent with the water level in the high pressure drum.The bell housing (8) of measuring tube (7) and detection system ties and connects with being connected Luo, bell housing (8) is an aluminum barrel, and stud with plumbous cover at its front end, bell housing is equipped with NaI(Te in (8)) crystal and a photomultiplier (9) be in order to receive detectable signal, aviation plug is equipped with in the bottom of bell housing (8), so that detectable signal is outputed to control system.Be equipped with forced air cooled tube (11) in bell housing (8) outside, so that detection system is cooled off.Temperature sensor (12) is used for measuring the bottom temp of tube (7) and measuring-signal is delivered to control system.
With after the high pressure drum is communicated with, during valve closing, it be empty measuring tube with high pressure steam water-level sensor, and during unlatching, the water level of measuring in the tube is consistent with the interior water level of high pressure drum.During work, radiation source is in open mode, and its ray will pass measured medium, received by detector, detector is output as the electric pulse amount, corresponding different water level values, detector will be exported different counting rates, and these counting rates are through can accurately measuring the water level in the high pressure drum after the MICROCOMPUTER PROCESSING.
High pressure steam water-level sensor, it is the signal deriving means that the high pressure steam water-level is surveyed, it have simple installation, radiation source chamber switch flexibly, safety, high count rate, cost is low, easy to maintenance, the environmental dose rate that radiation source caused meets advantages such as national security level of protection.
Claims (3)
1, high pressure steam water-level sensor, belong to high pressure steam water-level detection technique field, it is characterized in that it is to adopt nuclear technology to carry out the contactless continuous coverage of water level, it is by shift bar (1), radiation source (2), chamber, source housing (3), source plug (4), casting plumbous (5), connecting hole (6), measure tube (7), bell housing (8), photomultiplier (9), aviation plug (10), forced air cooled tube (11), temperature sensor (12) constitutes, chamber, source housing (3) is that external radius is 100mm, inside radius is the cast iron spheroid of 90mm, spheroid is interior except that staying the space that radiation source (2) and source plug (4) are installed, all casting is full plumbous, and radiation source is a radiomaterial
137Cs, seal with garden column type stainless steel, place the centre of sphere place of chamber, source housing, source plug (4) is to be made of stainless steel bar and the plumbous body of garden cylindricality, stainless steel bar connects switch knob (1), chamber, source housing (3) ties with Luo with measurement tube (7) and connects, measuring tube (7) is with the shape processing of weldless steel tube by high pressure vessel requirement design, respectively there is a connecting hole (6) above and below, measuring tube (7) also is to tie with Luo to connect with bell housing (8), NaI (Te) crystal and a photomultiplier are housed in the bell housing (8), aviation plug is equipped with in bell housing (8) bottom, the bell housing outside is equipped with forced air cooled tube (11), and temperature sensor (12) is installed in the bottom of measuring tube (7).
2, high pressure steam water-level sensor as claimed in claim 1, the diameter that it is characterized in that the plumbous body of garden cylindricality of the source plug (4) in chamber, the source housing (3) is 60mm, highly be 80mm, having diameter in a side of the plumbous body of garden cylindricality is 10mm, the degree of depth is the hole, garden of 80mm, and the garden heart in hole, garden is concentric with radiation source (2).
3, high pressure steam water-level sensor as claimed in claim 1, its feature are that also temperature sensor (12) is installed in measurement tube (7) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92204592 CN2121017U (en) | 1992-03-16 | 1992-03-16 | High-pressure steam manifold stage sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92204592 CN2121017U (en) | 1992-03-16 | 1992-03-16 | High-pressure steam manifold stage sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2121017U true CN2121017U (en) | 1992-11-04 |
Family
ID=4950962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92204592 Granted CN2121017U (en) | 1992-03-16 | 1992-03-16 | High-pressure steam manifold stage sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2121017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236671A (en) * | 2014-09-09 | 2014-12-24 | 中国恩菲工程技术有限公司 | Nucleon liquid level protection device, nucleon liquid level meter and container for use in pressure leaching |
-
1992
- 1992-03-16 CN CN 92204592 patent/CN2121017U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236671A (en) * | 2014-09-09 | 2014-12-24 | 中国恩菲工程技术有限公司 | Nucleon liquid level protection device, nucleon liquid level meter and container for use in pressure leaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |