CN202599482U - Steam pocket water level in-built magnetic liquid indicator - Google Patents
Steam pocket water level in-built magnetic liquid indicator Download PDFInfo
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- CN202599482U CN202599482U CN 201220039332 CN201220039332U CN202599482U CN 202599482 U CN202599482 U CN 202599482U CN 201220039332 CN201220039332 CN 201220039332 CN 201220039332 U CN201220039332 U CN 201220039332U CN 202599482 U CN202599482 U CN 202599482U
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- steam pocket
- drum
- transmitter
- water
- magnetic
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The utility model discloses a novel steam pocket water level in-built magnetic liquid indicator which comprises a floater, a connecting rod, an upper thrust spring, an overhauling flange, an insulating layer, a barrel body, a magnetic component, a waveguide, a magnetic transmitter, a protective sleeve, an installation support, a lower thrust spring, an on-site display board, cables, a secondary meter and the like. The novel steam pocket water level in-built magnetic liquid indicator is characterized in that the barrel body is communicated with a steam pocket through the overhauling flange. The protective sleeve is arranged inside the steam pocket, and is connected with the installation support. The floater is arranged inside the protective sleeve, and is connected with the magnetic component through the connecting rod. The waveguide is arranged outside the insulating layer of the barrel body, and is connected to the magnetic transmitter. The secondary meter is connected with the magnetic transmitter, a steam pocket pressure transmitter and the on-site display board through the cables. The steam pocket pressure transmitter is connected with the steam pocket through a steam pocket pressure measuring device tube. The floater is arranged inside an actual liquid level inside the steam pocket, can directly measure the water level inside the steam pocket, and can calculate density compensation for measuring results; and therefore the measuring error is reduced, and measuring precision is improved.
Description
Technical field
The utility model relates to dress mangneto liquid level gauge in a kind of novel steam water-level, is the boiler drum water level measurement device.Belong to the boiler auxiliary products.
Background technology
At present traditional steam water-level analog measurement instrument all exists certain problem and defective, can not be reliably, full operating mode, carry out drum level measurement accurately.Make a concrete analysis of as follows:
In the HTHP drum level measurement, conventional analogue water gaging position measurement instrument adopts the steam water-level single-compartment balance container and the interior dress of the steam water-level equalizing reservoir of differential pressure measurement principle more.
Its structure of steam water-level single-compartment balance container (see figure 1) is that balance tank (3) is cylindrical, its left side welding vapour side stopple coupon (2), below welding malleation side fairlead (4); The suction side fairlead (5) that the lateral water sampling tube (6) of malleation side fairlead (4) and drum (1) is drawn is connected to differential pressure transmitter (7) together, and the output signal of differential pressure transmitter (7) is connected to secondary table (9) through cable (8).Its shortcoming is: 1. the interior water of balance tank (3) will conduct heat downwards along malleation side fairlead (4) and make the interior water temperature of malleation side fairlead (4) be higher than environment temperature; Thereby make to exist greatlyyer as water column density in the malleation side fairlead (4) of scale and the balance tank (3), be difficult to guarantee the accuracy of measuring.2. the interior water of drum (1) is undersaturated, and there is bigger uncertainty in its density, is difficult to guarantee the accuracy of measuring.3. under specific operating mode when blowing out stage, band when pressing water, boiler maintenance (open), as the malleation side fairlead (4) of scale and the water column in the balance tank (3) can not be correctly, formation in time, measurement is exerted an influence.4. link the malleation side fairlead (4) and the suction side fairlead (5) of differential pressure transmitter, because uncertain factors such as line clogging, leakage and environmental impact usually cause the inaccurate of measurement.
Its structure of dress equalizing reservoir (see figure 2) is that drainer (4) welds subsequent use malleation side fairlead (5) for cylindrical its right side in the steam water-level; Left side welding vapour side stopple coupon (3); In drum (1) with after condensate water inlet tube (2) is connected; Condensate water is delivered to the equalizing reservoir (6) in the drum; The malleation side fairlead (9) and the suction side fairlead (8) that form all lead to differential pressure transmitter (10) through drum lateral water sampling tube (7), and the output signal of differential pressure transmitter (10) is connected to secondary table (12) through cable (11).Its shortcoming is: 1. under specific operating mode when blowing out stage, band when pressing water, boiler maintenance (open), as the equalizing reservoir (6) of scale and the water column in the malleation side fairlead (9) can not be correctly, formation in time, measurement is exerted an influence.2. simultaneously, malleation side fairlead (9) and suction side fairlead (8) are because uncertain factors such as line clogging, leakage and environmental impact usually cause the inaccurate of measurement.
In addition, existing other steam water-level analog quantity instrument, as capacitance level gauge, gamma ray level meter, mangneto liquid level gauge etc. have all also that measuring error is big, problem such as poor stability, maintenance are big, effect is all undesirable.Make a concrete analysis of as follows:
Traditional capacitance level gauge, (see figure 3), drum (1) and measurement tin (5) are communicated with through vapour side stopple coupon (2) and lateral water sampling tube (7), measure an interior capacitive transducer (6) and are connected with transmitter (3) through joint flange (4).Shortcoming is: 1. capacitive transducer (6) is prone to fouling, will produce than mistake measurement result.2. belong to the communicating pipe water level gauge,, thereby produce bigger measuring error because the temperature that heat radiation causes measuring water in the cylindrical shell is lower than the temperature of water in the drum.
Traditional gamma ray level meter (see figure 4), drum (1) and measurement tube (5) are communicated with through vapour side stopple coupon (2) and lateral water sampling tube (7), measure an inner rays measuring sonde (6) and are connected with transmitter (3) through joint flange (4).Its shortcoming is: 1. because radionetric survey probe (6) needs to adopt radiation source, do not suit to install and be applied in industry spot.2. traditional gamma ray level meter belongs to the communicating pipe water level gauge, because the temperature that heat radiation causes measuring water in the cylindrical shell is lower than the temperature of water in the drum, thereby produces bigger measuring error.
Traditional mangneto liquid level gauge (see figure 5), drum (1) and measurement tube (5) are communicated with through vapour side stopple coupon (2) and lateral water sampling tube (7), and waveguide sensor (6) is connected with transmitter (3) through joint flange (4), and magnetic float (8) is installed on the waveguide sensor.1., be prone to demagnetization when magnetic float (8) is worked under hot conditions its shortcoming is:; 2., traditional mangneto liquid level gauge belongs to the communicating pipe water level gauge, because the temperature that heat radiation causes measuring water in the cylindrical shell is lower than the temperature of water in the drum, thereby produces bigger measuring error.
In sum, be necessary to work out a kind of can be applicable under drum high temperature, the condition of high voltage; Full operating mode can drop into; Accurately, stable, reliable; Can provide the water level analog signals to be used for the interior dress of the novel steam water-level mangneto liquid level gauge that steam water-level is regulated and protected.
Summary of the invention
In order to overcome the shortcoming that existing water level gauge exists, the purpose of the utility model provides a kind of can be applicable under drum high temperature, the condition of high voltage; Can directly measure steam water-level; Full operating mode can drop into; Employing density compensation formula improves measuring accuracy; Accurately, stable, reliable; Can provide the water level analog signals to be used for the interior dress of the steam water-level mangneto liquid level gauge that steam water-level is regulated and protected.
The utility model is realized through following technical scheme: as shown in Figure 6; By water drum (1), pipe (2), float (3), connecting link (4), top thrust spring (5), threeway (6), maintenance flange (7), heat-insulation layer (8), cylindrical shell (9), magnetic part (10), waveguide (11), mangneto transmitter (12), drum pressure measurement instrument pipe (13), drum pressure transmitter (14), protection sleeve (15), mounting bracket (16), bottom thrust spring (17) fall, display board (18), cable (19), cable (20), secondary table (21), cable (22) etc. are formed on the spot; It is characterized in that: threeway (6) is installed at original pipeline place on drum top, and cylindrical shell (9) is through maintenance flange (7) and threeway (6) road connection wherein; Protection sleeve (15) is set in drum is connected with mounting bracket (16), float (3) is arranged in the protection sleeve (15); Float (3) is connected with magnetic part (10) through connecting link (4); The outside of cylindrical shell is provided with heat-insulation layer (8); Waveguide (11) is connected to mangneto transmitter (12) outside heat-insulation layer (8); With mangneto transmitter (12), drum pressure transmitter (14), display board (18) is connected on the spot, drum pressure transmitter (14) is connected with drum (1) through drum pressure measurement instrument pipe (13) secondary table (21) through cable (20).Fig. 7 is the another kind of embodiment of the utility model, and cylindrical shell (9) links together through weld bond (25) and threeway (6).
The beneficial effect of the utility model is:
1, float (3) places drum (1) inside, directly the water level in the drum is measured, and be the primary instrument of drum level measurement, be of value to measurement result accurately and reliably.
2, the utility model is used corresponding density compensation formula:
h＝f(P)×H
Wherein:---P is a drum pressure;
---f (P) is the single-valued function of drum pressure;
---H is the water level value that sensor records;
---h is the steam water-level value after density compensation calculates.
Measured value under the different operating modes is carried out density compensation calculate, be of value to the measuring accuracy of raising system.
Description of drawings
Fig. 1: steam water-level single-compartment balance container structural representation.
Fig. 2: dress equalizing reservoir structural representation in the steam water-level
Fig. 3: capacitance level gauge structural representation.
Fig. 4: gamma ray level meter structural representation.
Fig. 5: mangneto liquid level gauge structural representation.
Fig. 5: the another kind of structural representation of mangneto liquid level gauge.
Fig. 6: the structural representation of the utility model.
Fig. 7: the another kind of structural representation of the utility model.
Among Fig. 6 Fig. 7: 1. drum, 2. downtake, 3. float, 4. connecting link, 5. top thrust spring, 6. threeway; 7. maintenance flange, 8. heat-insulation layer, 9. cylindrical shell, 10. magnetic part, 11. waveguides, 12. mangneto transmitters; 13. drum pressure measurement instrument pipe, 14. drum pressure transmitters, 15. protection sleeves, 16. mounting brackets, 17. bottom thrust springs; 18. display board on the spot, 19. cables, 20. cables, 21. secondary tables, 22. cables.
Embodiment
As shown in Figure 6; The drum top is provided with empty gas exhaust piping; Can install threeway (6) additional to empty gas exhaust piping place at former drum top and install and measure tube (8); Float (3) is arranged in the protection sleeve that is communicated with drum (15) in the drum, directly contacts stove water in the drum, and float (3) is connected with the interior magnetic part (10) of cylindrical shell through connecting link (4); Waveguide (11) is connected to mangneto transmitter (12) outside cylindrical shell heat-insulation layer (8), secondary table (21) through cable (20) with mangneto transmitter (12), drum pressure transmitter (14), display board (18) is connected on the spot.Fig. 7 is the another kind of structural representation of the utility model: cylindrical shell (9) links together through weld bond (25) and threeway (6).
Because the density of stove water is different in the different operating mode water drums, the volume that float is suspended in the water is different, and the water level value that therefore sensor is recorded carries out density compensation and calculates and can draw the steam water-level value and can further improve measuring accuracy:
h＝f(P)×H
Wherein:---P is a drum pressure;
---f (P) is the single-valued function of drum pressure;
---H is the water level value that sensor records;
---h is the steam water-level value after density compensation calculates.
Claims (1)
1. adorn the mangneto liquid level gauge in a steam water-level; By downtake (1), drum (2), float (3), connecting link (4), top thrust spring (5), threeway (6), maintenance flange (7), heat-insulation layer (8), cylindrical shell (9), magnetic part (10), waveguide (11), mangneto transmitter (12), drum pressure measurement instrument pipe (13), drum pressure transmitter (14), protection sleeve (15), mounting bracket (16), bottom thrust spring (17), display board (18), cable (19), cable (20), secondary table (21), cable (22) etc. are formed on the spot; It is characterized in that: threeway (6) is installed at original pipeline place on drum top, and cylindrical shell (9) is through maintenance flange (7) and threeway (6) road connection wherein; Protection sleeve (15) is set in drum is connected with mounting bracket (16), float (3) is arranged in the protection sleeve (15); Float (3) is connected with magnetic part (10) through connecting link (4); The outside of cylindrical shell is provided with heat-insulation layer (8); Waveguide (11) is connected to mangneto transmitter (12) outside heat-insulation layer (8); With mangneto transmitter (12), drum pressure transmitter (14), display board (18) is connected on the spot, drum pressure transmitter (14) is connected with drum (2) through drum pressure measurement instrument pipe (13) secondary table (21) through cable (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220039332 CN202599482U (en) | 2012-01-08 | 2012-02-02 | Steam pocket water level in-built magnetic liquid indicator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220018974.9 | 2012-01-08 | ||
| CN201220018974 | 2012-01-08 | ||
| CN 201220039332 CN202599482U (en) | 2012-01-08 | 2012-02-02 | Steam pocket water level in-built magnetic liquid indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202599482U true CN202599482U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220039332 Expired - Fee Related CN202599482U (en) | 2012-01-08 | 2012-02-02 | Steam pocket water level in-built magnetic liquid indicator |
| CN201210026976.7A Active CN102589652B (en) | 2012-01-08 | 2012-02-02 | Magnetic liquid indicator mounted in steam drum |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210026976.7A Active CN102589652B (en) | 2012-01-08 | 2012-02-02 | Magnetic liquid indicator mounted in steam drum |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589652A (en) * | 2012-01-08 | 2012-07-18 | 秦皇岛华电测控设备有限公司 | Magnetic liquid indicator mounted in steam drum |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423278B (en) * | 2015-12-25 | 2017-11-14 | 华北电力科学研究院有限责任公司 | Steam water-level whole-process control system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5220310A (en) * | 1991-04-15 | 1993-06-15 | Pye Earl L | Liquid level detector which overcomes hysterisis in the detector element |
| CN2264365Y (en) * | 1996-12-20 | 1997-10-08 | 国防科学技术工业委员会工程设计研究总院 | Pipeline liquid level signal device |
| CN2618061Y (en) * | 2003-07-28 | 2004-05-26 | 刘吉川 | Built-in water level balancing container in steam tank |
| CN2713445Y (en) * | 2004-07-13 | 2005-07-27 | 刘吉川 | Built-in electrode sensor for steam drum water level |
| CN201037783Y (en) * | 2007-04-11 | 2008-03-19 | 吉林省隆华测控设备制造有限公司 | Balance container with two built-in chamber |
| JP2009229377A (en) * | 2008-03-25 | 2009-10-08 | Showa Kiki Kogyo Co Ltd | Vibration-prevention structure of detection section of magnetostrictive liquid-level meter |
| CN201522297U (en) * | 2009-10-12 | 2010-07-07 | 邱国雄 | Sewage flowmeter |
| CN102116660A (en) * | 2010-11-15 | 2011-07-06 | 天脊煤化工集团股份有限公司 | Correction method for multi-point measurement of steam drum liquid level of high pressure boiler |
| CN202599482U (en) * | 2012-01-08 | 2012-12-12 | 秦皇岛华电测控设备有限公司 | Steam pocket water level in-built magnetic liquid indicator |
-
2012
- 2012-02-02 CN CN 201220039332 patent/CN202599482U/en not_active Expired - Fee Related
- 2012-02-02 CN CN201210026976.7A patent/CN102589652B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589652A (en) * | 2012-01-08 | 2012-07-18 | 秦皇岛华电测控设备有限公司 | Magnetic liquid indicator mounted in steam drum |
| CN102589652B (en) * | 2012-01-08 | 2014-04-16 | 秦皇岛华电测控设备有限公司 | Magnetic liquid indicator mounted in steam drum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102589652A (en) | 2012-07-18 |
| CN102589652B (en) | 2014-04-16 |
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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 |
Granted publication date: 20121212 Termination date: 20160202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |