CN1063936A - Combined steam manifold water level sampler - Google Patents
Combined steam manifold water level sampler Download PDFInfo
- Publication number
- CN1063936A CN1063936A CN 91100647 CN91100647A CN1063936A CN 1063936 A CN1063936 A CN 1063936A CN 91100647 CN91100647 CN 91100647 CN 91100647 A CN91100647 A CN 91100647A CN 1063936 A CN1063936 A CN 1063936A
- Authority
- CN
- China
- Prior art keywords
- water level
- inner barrel
- steam manifold
- combined steam
- wide vessel
- 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.)
- Granted
Links
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention is scientifically combined by three file dual-container electrodes measurement tube and two inventions of the permanent bit strip protection equalizing reservoir of zero reference becomes combined steam manifold water level sampler; can be used for and electrode display instrument and the supporting use of all kinds of differential pressure type instrument; measure the theoretical severe water level of carbonated drink two-phase pressure vessel; be particularly useful for measuring theoretical severe water level of boiler-steam dome and water level and regulate signal automatically; its advantage is accurate, reliable, credible; no error due to room temperature change; no zero shift error adapts to boiler variable element and full operating mode operation.Have obvious energy-saving effect and safe meaning.
Description
The present invention relates to the electrode type water level gauge that industry, station boiler drum teletransmission level measuring are used, a kind of improved water level sampler-combined steam manifold water level sampler that the differential pressure type water level gauge is shared.It is applicable to carbonated drink two-phase pressure container water level measuring, is particularly useful for boiler drum water level measurement.
The water level sampler pattern that existing domestic industry, station boiler steam bag level measuring are used has: drum is high water stage instrumentation graduated cylinder on the spot, electrode level meter list container measurement tube, all kinds of high-order benchmark reference equalizing reservoirs of differential pressure type water level gauge etc.The common defects of above-mentioned measurement tube and equalizing reservoir is: the water column density error that exists the room temperature heat radiation to cause; Also there is boiler parameter variation causing water level indicating gauge " 0 " position drift error in the high-order benchmark reference of differential pressure type class equalizing reservoir; Saturated section equalizing reservoir of high-order reference tape also exists meets saturated section of vapour pressure rapid drawdown and causes water level indicating gauge transient state misalignment error from boiling vaporization dehydration.Two 12 the uniform electrode measurement tubes of file of external a kind of [Hydrastep7] type twin containers by name, though there is not above-mentioned defective, but exist the electrode measurement inner tube structure unreasonable, two column electrode arrangements are difficult near intensive layout electrode frequent normal " 0 " water level of fluctuation of water table, directly influence near measuring accuracy normal " 0 " water level of drum.General only suitable being arranged in separately on the water level sampling hole of drum diverse location of the measurement tube of the above all kinds of water level gauge and equalizing reservoir, since boiler operating condition water drum water level vertically each position or transversal section not the homonymy water level be inconsistent, the measurement tube that adds all kinds of water level gauges that measuring principle is different is different with equalizing reservoir error rule, therefore existing many water level gauges of boiler-steam dome are difficult to obtain two covers and can show identical and near the reliable water level gauge of drum real water level, the operations staff is difficult to judge the error or the misalignment state of drum low-water level meter, this differentiates for the boiler operatiopn personnel and the monitoring steam water-level brings blindly and difficulty, it can cause steam quality to worsen, the efficiency of cycle reduces, even the entail dangers to steam turbine, the safety of boiler main equipment.
Task of the present invention is that different electrode type water level gauge, the differential pressure type water level gauges of using for boiler-steam dome teletransmission level measuring of measuring principle provides a kind of shared density error that exists the room temperature heat radiation to cause hardly, there is not zero shift error (differential pressure type), the combined steam manifold water level sampler of instrument misalignment error when not having the vapour pressure rapid drawdown.
Solution of the present invention is as follows: the main measurement is full of in the tube from cutting down the 15 drum saturated vapors that import vapour communicating pipe, condensing water vapor causes downtake 19, become the water column in the inner barrel 4 of water connected state to be can be considered saturation water with drum liquid to the space by heating continuously, it becomes statics weight equipotential equilibrium state with the interior saturated water level of theoretical severe of drum, stretches into the electrode 18 in inner barrel 4 spaces and differentiates vapour phase or liquid phase according to the difference of carbonated drink conductance.Be arranged in main zero reference pipe 5 water columns of measuring tube 1 and also be heated to form state of saturation, it is to keep permanent position state for supposition earlier, then the theoretical severe water table ratio that is changing in it and the inner barrel 4, it exports differential pressure and the water level conversion relational expression has:
△P＝-（Ho-H）（γw-γs）……（-）
△ P-exports differential pressure
Ho-lateral water sampling tube center is to " O " height of water level
Theoretical severe water level in the H-state of saturation water drum
γ w-saturation water severe (not containing steam bubble)
γ s-saturated vapor unit weight
1, the end variable of room temperature influence occurs being subjected to (γ a) shows that △ P is not subjected to room temperature influence in the formula.
2, when H＞Ho, △ P is that △ P is a negative value when, H＜Ho, △ P=0 when H=Ho, and this steam water-level with our custom address is positive and negative, zero level is consistent and show that vapour pressure changes: indicating gauge " 0 " not drift of position when " 0 " water level.
3, when H be definite value, △ P=f(γ w-γ s then), show that vapour pressure changes and only cause that the gauge glass amplitude changes, according to characteristics 2,3, on differential pressure water level indication surface version, evenly increase and carve several isobaric water level indicating lines, can directly obtain the mechanical pressure compensate function.
For this reason, the measure that the present invention takes is: other and show and pay a wide vessel 2, pay a wide vessel 2 and communicate with zero reference pipe 5 at the main tube 1 measured, vapour communication pipe 8 will be led measurement tube 1 and be communicated with pair wide vessel 2 steam chests, and paying wide vessel 2 tops has the U trap 3 that communicates with inner barrel 4.
After taking above-mentioned measure, zero reference Guan Hengwei of the present invention has the protection automatically of three covers, and its protection philosophy is summarized as follows:
1. paying wide vessel 2 has garden week and the bigger room temperature film-cooled heat in bottom, and top is communicated with the main tube 1 of measuring, and saturated vapor is condensation continuously therein, and condensate water can replenish pays a wide vessel 2, zero reference pipe 5, Yu Shui through zero reference pipe 5 upper ends from excessive perseverance.
2. in meeting vapour pressure by a small margin during rapid drawdown, in the zero reference pipe 5 water column with pay wide vessel 2 in water column become the free equilibrium state of statics weight, decuple zero reference pipe 5 sectional areas owing to pay the cross-sectional area number of wide vessel 2, the water column amount that saturated water column self-boiled in the zero reference pipe 5 is risen vaporization loss obtains paying wide vessel 2 and reduces a trace and highly take advantage of the water yield of its cross-sectional area to replenish, the water surface in the zero reference pipe 5 after the balance is than the also low approximate trace height paying wide vessel 2 reductions of permanent plane, through the permanent position of process condensate water recovery after replenishing.
3. when meeting vapour pressure significantly during rapid drawdown, when repeating above-mentioned moisturizing process, because vapour pressure rapid drawdown significantly, must cause steam water-level to rise to high water stage rapidly, saturated water level rises synchronously rapidly with steam water-level in the inner barrel 4, when water level surpassed the siphon elevation, U trap 3 enforcements siphon water transfer from inner barrel 4 replenishes paid a wide vessel 2, and then makes zero-bit parent tube 5 water columns obtain additional rapidly permanent position.Because U trap 3 internal diameters are than little many times of water communicating pipes 16 internal diameter, the siphon water transfer does not influence the height that inner barrel 4 middle water levels should rise to, and when the vapour pressure rapid drawdown stops, water level begins to descend, U trap 3 postpones to stop water transfer when moisturizing to water levels are lower than the siphon import, so the siphon moisturizing not only reliably but also inexcessive.
For improving the electrode measurement precision, the another kind of measure that the present invention takes is that inner barrel 4 is improved, inner barrel 4 made that the transversal section is at the bottom of the bent polygonal band converting pipe or by combination shape cylindrical shell at the bottom of a kind of three parallel bands that are arranged in juxtaposition and are interconnected of pipe, this cylindrical shell bottom and drum water are logical, periphery at cylindrical shell is equipped with three file potential electrode 18, the minimum vertical spacing of each potential electrode of file reaches 15 millimeters, therefore, shortened the distance of each measurement point of potential electrode 18, measuring accuracy is improved.
After taking above-mentioned measure, the present invention can have four kinds of purposes; Optional one does not all influence accuracy, reliability, and its four kinds of purposes are: electrode type water level gauge, differential pressure type water level gauge are united use; Pure electrode type water level gauge; Pure differential pressure type water level gauge; Belt electrode is reported to the police, protection differential pressure type water level gauge.
Advantage of the present invention is that electrode, differential pressure two cover water level gauges can record theoretical severe water level in the drum synchronously, accurately and reliably, the density error that exists the room temperature heat radiation to cause hardly, there is not zero shift error (differential pressure type), instrument misalignment error when not having the vapour pressure rapid drawdown, have significant steam quality and the energy-saving effect of improving, can guarantee boiler turbine main equipment safety.
Embodiments of the invention such as accompanying drawing are as showing:
Accompanying drawing 1 is a structural representation
Accompanying drawing 2 is A-A views
Accompanying drawing 3 is B-B views
The present invention includes the main tube 1, inner barrel 4, zero reference pipe 5, potential electrode 18, other and show and pay a wide vessel 2, pay a wide vessel 2 and communicate measured with zero reference pipe 5 at the main tube 1 measured, vapour communication pipe 8 will be led measurement tube 1 and communicate with paying wide vessel 2 steam chests, pay the U trap of ining succession and communicate with inner barrel 4 in wide vessel 2 tops 3.Normal " 0 " water level of the height flat drum of zero reference pipe 5, its underpart are communicated with by its accurate head efferent duct 7 to be paid wide vessel 2 and is switched to its accurate head pulse tube 12.The sectional area of paying wide vessel 2 is multiple times than the sectional area of zero reference pipe 5, its water storage height has downwards from normal " 0 " water level of drum and is no less than 2/3 of zero reference length of tube, pay U trap 3 that wide vessel 2 communicates with inner barrel 4 and be to draw to pass through and mainly measure tin 1 from inner barrel 4 middle upper section parts, be bent upwards the back and cause the top steam chest of paying wide vessel 2 down, the siphon height of U trap 3 is no more than peak level, and the height of U trap 3 and inner barrel 4 junctions is near alarm water level.Vapour communication pipe 8 is to be communicated with more than the water level in normal " 0 " to pay wide vessel 2 steam chests and the main tube 1 of measuring.
Inner barrel 4 is bent polygon, and inner barrel 4 can be made into two kinds in the present embodiment, and first kind is that its transversal section is a converting pipe at the bottom of the bent polygon band, only adopts a converting pipe to make as shown in Figure 3.Another kind is made up of the many parallel combination shape cylindrical shells that are arranged in juxtaposition at the bottom of the band that interconnects, as shown in Figure 2.Three file potential electrode 18 are installed on the periphery of inner barrel 4, and the minimum vertical of each staggered potential electrode of file is apart from reaching 15 millimeters.Electrode 18 is fixed on the electrode tip holder 17, passes through by electrode tip holder 17, main measures the space that inner barrel 4 is stretched in shape duct, concentric closed garden that tube 1 wall, inner barrel 4 walls form, and every column electrode is provided with number and will looks measuring accuracy and come calmly.
In the accompanying drawing: 1, main measuring cylinder 2, pay wide vessel 3, siphon pipe 4, inner barrel 5, zero reference pipe 6, main measuring cylinder base plate 7, benchmark head efferent duct 8, vapour communication pipe 9, change head efferent duct 10, water communication short tube 11, change head pulse tube 12, benchmark head pulse tube 13, drain the mouth of pipe 14, interior tube end plate 15, vapour side communicating pipe cuts down 16, water side communicating pipe cuts down 17, electrode tip holder 18, measurement electrode 19, down-comer 20, excretory duct cuts down 21, drum
Claims (8)
1, a kind of combined steam manifold water level sampler, include main tube 1, inner barrel 4, zero reference pipe 5, the potential electrode 18 measured, it is characterized in that: measure tube 1 side and show a pair wide vessel 2 main, paying wide vessel 2 communicates with zero reference pipe 5, vapour communication pipe 8 will be led measurement tube 1 and be communicated with pair wide vessel 2 steam chests, and paying wide vessel 2 tops has the U trap 3 that communicates with inner barrel 4.
2, combined steam manifold water level sampler according to claim 1 is characterized in that normal " 0 " water level of height flat drum of zero reference pipe 5.
3, combined steam manifold water level sampler according to claim 1, the sectional area that it is characterized in that paying wide vessel 2 is multiple times than the sectional area of zero reference pipe 5, and the water storage height of paying wide vessel 2 has downwards from normal " 0 " water level of drum and is no less than 2/3 of zero reference pipe 5 length.
4, combined steam manifold water level sampler according to claim 1 is characterized in that the U trap 3 that pair wide vessel 2 communicates with inner barrel 4 is to draw from inner barrel 4 middle upper section parts to pass through the main tube 1 of measuring, and is bent upwards and causes a top of paying tolerant product 2 under the back.
5, according to claim 1 or 4 described combined steam manifold water level samplers, it is characterized in that the siphon height of U trap 3 is no more than peak level, the height of U trap 3 and inner barrel 4 junctions is near extremely alert water level.
6, combined steam manifold water level sampler according to claim 1 is characterized in that vapour communication pipe 8 is communicated with pair wide vessel 2 steam chests and the main tube 1 of measuring in normal " 0 " more than the water level.
7, combined steam manifold water level sampler according to claim 1 is characterized in that inner barrel 4 is bent polygon, and three file potential electrode 18 are installed on its periphery, and the staggered potential electrode minimum vertical of file spacing reaches 15 millimeters.
8, combined steam manifold water level sampler according to claim 7 is characterized in that inner barrel 4 can be that the transversal section is converting pipe at the bottom of the bent polygonal band, also can by many parallel be arranged in juxtaposition the band that interconnects at the bottom of combination shape cylindrical shell form.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100647 CN1035455C (en) | 1991-01-30 | 1991-01-30 | Combined steam manifold water level sampler |
| CN 95116076 CN1081322C (en) | 1991-01-30 | 1995-10-11 | Datum constant level balance container with multiple protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100647 CN1035455C (en) | 1991-01-30 | 1991-01-30 | Combined steam manifold water level sampler |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95116076 Division CN1081322C (en) | 1991-01-30 | 1995-10-11 | Datum constant level balance container with multiple protection |
| CN 95116085 Division CN1149711A (en) | 1995-10-11 | 1995-10-11 | Double container three column electrode water level measuring tube |
| CN 95114249 Division CN1149687A (en) | 1995-11-21 | 1995-11-21 | Medium pressure petroleum gas stove with flue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1063936A true CN1063936A (en) | 1992-08-26 |
| CN1035455C CN1035455C (en) | 1997-07-16 |
Family
ID=4904750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91100647 Expired - Fee Related CN1035455C (en) | 1991-01-30 | 1991-01-30 | Combined steam manifold water level sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035455C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110440863A (en) * | 2019-08-28 | 2019-11-12 | 安徽省中原仪表有限公司 | A kind of rotz flowmeter |
-
1991
- 1991-01-30 CN CN 91100647 patent/CN1035455C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110440863A (en) * | 2019-08-28 | 2019-11-12 | 安徽省中原仪表有限公司 | A kind of rotz flowmeter |
| CN110440863B (en) * | 2019-08-28 | 2020-10-16 | 安徽省中原仪表有限公司 | Roots flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1035455C (en) | 1997-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1063936A (en) | Combined steam manifold water level sampler | |
| CN1081322C (en) | Datum constant level balance container with multiple protection | |
| Dana | The latent heat of vaporization of liquid oxygen-nitrogen mixtures | |
| CN100460833C (en) | Single solid bowl type electrode measurement tube in high precision for water level of steam tank, and method for determining geometrical size | |
| US5205909A (en) | Apparatus for measuring reflux flow in a distillation column | |
| CN1149711A (en) | Double container three column electrode water level measuring tube | |
| CN1164914C (en) | Dual-container electrode water level measuring cylinder | |
| CN1079156C (en) | Combination type device for indicating real water level of boiler | |
| US3217541A (en) | Remote reading gauge | |
| CN212133791U (en) | Novel liquid level meter | |
| CN201066116Y (en) | Communicating vessels type drum water level sampling and measuring device | |
| CA1045404A (en) | Floating wave stilling chamber for liquid level indicator | |
| CN2072677U (en) | Integrated electric connection point tank gage | |
| CN2610224Y (en) | Steam pocket water-level three-compartment balance container | |
| CN2128002Y (en) | Electronic liquid leel display glass lining container | |
| CN2444215Y (en) | Conbined magnetic floater liquid level gauge | |
| CN213714466U (en) | Liquid level signal output device | |
| CN204275547U (en) | A kind of experiment rectifying column changing theoretical cam curve | |
| CN2620173Y (en) | Steam pocket water level single chamber balance container | |
| CN108426621A (en) | A kind of low-temp. liquid-level meter | |
| CN2746373Y (en) | Multiwall electric contact water gage | |
| CN220229112U (en) | Capacitor water level device for boiler | |
| CN1240963C (en) | Two constant singlechambered balanced container | |
| CN208606862U (en) | A kind of intelligence drum level measurement device | |
| CN210119267U (en) | Non-linear standard tank electromagnetic floating ball level meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| 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 |