CN201348530Y - Boiler drum water level non-contact measurement device - Google Patents
Boiler drum water level non-contact measurement device Download PDFInfo
- Publication number
- CN201348530Y CN201348530Y CNU2009200929879U CN200920092987U CN201348530Y CN 201348530 Y CN201348530 Y CN 201348530Y CN U2009200929879 U CNU2009200929879 U CN U2009200929879U CN 200920092987 U CN200920092987 U CN 200920092987U CN 201348530 Y CN201348530 Y CN 201348530Y
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- tank body
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- measurement device
- condensation chamber
- boiler drum
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Abstract
The utility model relates to a boiler drum water level non-contact measurement device, which belongs to the technical field of measurement and comprises an outer tank body, a condensation chamber, a blow down chamber and an inner tank body. The inner tank body has the upper end thereof communicated with the condensation chamber and the lower end thereof communicated with the blow down chamber; a steam side sampling tube is arranged at the upper part of the outer tank body; a drainage pipe is arranged at the lower part of the outer tank body; a water side sampling tube is arranged at the lower part of the inner tank body; and a plurality of drain pipes communicated with the condensation chamber are arranged on the inner tank body. The device is characterized in that a magnetostriction transmitter is arranged on the outer tank body, and a magnetic float is arranged inside the inner tank body; a plurality of outer fins are arranged on the outer tank body of the condensation chamber; a plurality of fins are arranged on the inner wall and/or the outer wall of the inner tank body; and the magnetic float is placed inside a floater guide tube arranged inside the inner tank body. The boiler drum water level non-contact measurement device integrates monitoring, automatic regulation and protection functions, can meet the requirements on an on-site thermodynamic instrument for continuous high precision measurement, and powerfully ensures the safe and stable operation of a boiler.
Description
Technical field
The utility model relates to field of measuring technique, is a kind of boiler drum level non-cpntact measurement device.
Background technology
Boiler drum level is one of normal topmost monitored parameter in service of boiler.Water level is too high, and the vapor space is dwindled and will be caused water entrained by steam, steam quality is worsened, so that produce the salt dirt deposition in superheater tube, makes pipe overheated, and metal strength reduces and the generation explosion; Steam is with water in a large number during full water, will cause to produce serious water slug in pipeline and the steam turbine, causes the damage of equipment.Water level is low excessively, will cause the destruction of water cycle, makes the water screen tube over temperature and heat; During serious water shortage, also may cause more serious device damage accident.Therefore strengthen the supervision of water level and adjust most important.Up to now, the on-the-spot boiler drum level sensor that uses mostly is two kinds of electric pole type and differential pressure types.Electric pole type steam water-level sensor is based on the communicating pipe mode, in the water level gauge of drum outside, take steam tracing and condensate water method of replacement to come in the guaranteed water level meter water column as far as possible near the boiler-steam dome middle water level, but also this just communicating pipe mode, make operating mode and drum in the water level gauge pipe interior basic identical, cause the operating mode of measuring process very abominable, adopt general means can't measure the interior water colunm height of water level gauge pipe usually; Though and it is loose relatively to the process working condition requirement to adopt electric pole type to measure, also realize easily, but owing to the big and reasons such as welding and the requirement of electrode dismounting process of holder diameter of measuring the design of tube bearing structure, electrode assemblie, the measuring point minimum interval is restricted to 15mm, and this phase step type is measured can not finely satisfy service requirement.Differential pressure type boiler drum level meter is measured water level by height of water level is converted to differential pressure, owing to be not an one-variable function relation between steam water-level and the differential pressure, it more or not a linear functional relation, saturation water density, saturated vapor density, the variation of drum pressure all will influence the measurement result of differential pressure water level gauge, in addition, the comparing water column variation of temperature can influence the measurement result of differential pressure water level gauge too, so, in order to measure steam water-level, differential pressure type boiler drum level meter must be proofreaied and correct each variable, and this correction can not realize the measurement of degree of precision.
Summary of the invention
In order to overcome the shortcoming of above two kinds of boiler drum level meters, the purpose of this utility model provides a kind ofly to be had supervision simultaneously, regulates and defencive function automatically, satisfies the continuous coverage requirement, high-precision boiler drum level non-cpntact measurement device.
The purpose of this utility model is achieved through the following technical solutions: a kind of boiler drum level non-cpntact measurement device, it comprises outer tank body, top in the tank body is provided with condensation chamber outside, bottom in the tank body is provided with the blowdown chamber outside, interior tank body is set in the tank body outside, the upper end of interior tank body is communicated with condensation chamber, its lower end is communicated with the blowdown chamber, tank body top is provided with vapour side stopple coupon outside, the tank body bottom is provided with drainpipe outside, in interior tank body bottom lateral water sampling tube is set, several drain pipes that are communicated with condensation chamber are set on interior tank body, and its special character is: tank body is provided with the magnetostriction transmitter outside, is built-in with magnetic float at interior tank body.
On the outer tank body of described condensation chamber, be provided with fin outside several.
In described, be provided with several fins on the inwall of tank body and/or the outer wall.
In the floater guiding pipe that tank body was provided with in described magnetic float placed.
Boiler drum level non-cpntact measurement device of the present utility model has compared with prior art been formed vapour-liquid heat exchanger because the inwall of outer tank body and interior tank body and/or outer wall are provided with several fins, has increased the heat interchanging area of steam with the sampling water column greatly; Because the outer tank body at condensation chamber place is provided with several fins and has formed condenser, reduced the volume of condensation chamber, strengthened condensation efficiency, produce the original water sample in the condensate water displacement sampling water column of a large amount of saturation temperatures, more than two measures guaranteed that the temperature of sampling water column follows the tracks of and approach the saturation water megadyne temperature degree in the drum in real time, thereby reduced sampling error.Because magnetic float high temperature resistant, high pressure is placed interior jar, and carry out non-cpntact measurement by outside magnetostriction transmitter, solved the measurement difficult point, reduced measuring error, overcome the shortcoming separately of existing electric pole type and differential pressure type steam water-level sensor, in conjunction with and developed the advantage of two kinds of steam water-level sensors, satisfied the precision and the functional requirement of on-the-spot thermal meter, powerful guarantee the safe and stable operation of boiler.
Description of drawings
Fig. 1 is a boiler drum level non-cpntact measurement device cross-sectional schematic of the present utility model.
Fig. 2 is an A-A cross-sectional schematic among Fig. 1.
Among the figure: 1 low head, 2 lower connecting plates, 3 drainpipes, 4 lateral water sampling tubes, 5 floater guiding pipes, 6 magnetic floats, 7 outer tank bodies, 8 vapour side stopple coupons, 9 upper junction plates, 10 upper covers, 11 blow-down pipes, 12 condensation chambers, 13 magnetostriction transmitters, 14 fins, 15 outer fins, 16 drain pipes, tank body in 17,18 blow-off pipes, blowdown chambers 19.
Embodiment
Utilize drawings and Examples that the utility model is further described below.
With reference to Fig. 1 and 2, boiler drum level non-cpntact measurement device has outer tank body 7, and welded top upper cover 10 in the tank body 7 and upper junction plate 9 form condensation chamber 12 outside, are provided with blow-down pipe 11 on upper cover 10.On the outer tank body 7 of condensation chamber 12, be provided with fin 15 composition condensers outside several.Several drain pipes 16 that are communicated with condensation chamber 12 are set on interior tank body 17, and condenser and several drain pipes 16 are formed the water sample displacing device.Bottom welding low head 1 in the tank body 7 and lower connecting plate 2 form blowdown chamber 19 outside, are provided with blow-off pipe 18 on low head 1.Tank body 17 in being provided with in the tank body 7 outside, the upper end of interior tank body 17 is communicated with condensation chamber 12, its lower end is communicated with blowdown chamber 19.Tank body 7 tops are provided with vapour side stopple coupon 8 outside, and tank body 7 bottoms are provided with drainpipe 3 outside, in interior tank body 17 bottoms lateral water sampling tube 4 are set.Tank body 7 is provided with magnetostriction transmitter 13 outside, is built-in with magnetic float 6 at interior tank body 17.On the inwall of interior tank body 17 and/or outer wall, be provided with several fins 14.Several fins 14 that are provided with on the inwall of outer tank body 7 and interior tank body 17 and/or the outer wall are formed vapour-liquid heat exchangers.Several fins 14 on the inwall of interior tank body 17 also play the mobile guide effect of magnetic float 6.In the floater guiding pipe 5 that tank body 17 was provided with in the magnetic float 6 of present embodiment placed.Outer tank body 7, interior tank body 17 and floater guiding pipe 5 are non magnetic tubing and make, as: stainless steel pipe is made.Magnetic float 6 and magnetostriction transmitter 13 are the commercially available prod.Magnetic float 6 moves up and down with interior jar of 17 middle water level height, its position is passed outer tank body 7 by the magnetic line of force and is derived, and the magnetostriction transmitter 13 that is provided with on the tank body 7 is outside surveyed the position of the magnetic line of force and exported a non-cpntact measurement that characterizes the analog quantity realization boiler drum level of water level.
Claims (4)
1. boiler drum level non-cpntact measurement device, it comprises outer tank body, top in the tank body is provided with condensation chamber outside, bottom in the tank body is provided with the blowdown chamber outside, interior tank body is set in the tank body outside, the upper end of interior tank body is communicated with condensation chamber, its lower end is communicated with the blowdown chamber, tank body top is provided with vapour side stopple coupon outside, the tank body bottom is provided with drainpipe outside, in interior tank body bottom lateral water sampling tube is set, several drain pipes that are communicated with condensation chamber are set on interior tank body, and it is characterized in that: tank body is provided with the magnetostriction transmitter outside, is built-in with magnetic float at interior tank body.
2. boiler drum level non-cpntact measurement device according to claim 1 is characterized in that: be provided with fin outside several on the outer tank body of described condensation chamber.
3. boiler drum level non-cpntact measurement device according to claim 1 is characterized in that: be provided with several fins in described on the inwall of tank body and/or the outer wall.
4. boiler drum level non-cpntact measurement device according to claim 1 is characterized in that: in the floater guiding pipe that tank body was provided with in described magnetic float placed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200929879U CN201348530Y (en) | 2009-02-07 | 2009-02-07 | Boiler drum water level non-contact measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200929879U CN201348530Y (en) | 2009-02-07 | 2009-02-07 | Boiler drum water level non-contact measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201348530Y true CN201348530Y (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200929879U Expired - Fee Related CN201348530Y (en) | 2009-02-07 | 2009-02-07 | Boiler drum water level non-contact measurement device |
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| CN (1) | CN201348530Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564534A (en) * | 2012-01-08 | 2012-07-11 | 秦皇岛华电测控设备有限公司 | Magnetic liquidometer for water level of steam drum |
| CN103344308A (en) * | 2013-07-03 | 2013-10-09 | 瓮福（集团）有限责任公司 | Magnetostriction level meter for measuring acid solutions |
| CN104732627A (en) * | 2015-01-27 | 2015-06-24 | 中国石油化工股份有限公司 | Control scheme optimization method of steam pocket safety interlocking system |
-
2009
- 2009-02-07 CN CNU2009200929879U patent/CN201348530Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564534A (en) * | 2012-01-08 | 2012-07-11 | 秦皇岛华电测控设备有限公司 | Magnetic liquidometer for water level of steam drum |
| CN103344308A (en) * | 2013-07-03 | 2013-10-09 | 瓮福（集团）有限责任公司 | Magnetostriction level meter for measuring acid solutions |
| CN104732627A (en) * | 2015-01-27 | 2015-06-24 | 中国石油化工股份有限公司 | Control scheme optimization method of steam pocket safety interlocking system |
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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: 20091118 Termination date: 20100207 |