CN2058747U - Leve meter for solid matter - Google Patents
Leve meter for solid matter Download PDFInfo
- Publication number
- CN2058747U CN2058747U CN 89210482 CN89210482U CN2058747U CN 2058747 U CN2058747 U CN 2058747U CN 89210482 CN89210482 CN 89210482 CN 89210482 U CN89210482 U CN 89210482U CN 2058747 U CN2058747 U CN 2058747U
- Authority
- CN
- China
- Prior art keywords
- material level
- solid material
- pressure
- level meter
- closed container
- 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.)
- Withdrawn
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- 239000007787 solid Substances 0.000 title claims abstract description 13
- 239000011343 solid material Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 21
- 230000005611 electricity Effects 0.000 abstract description 4
- 239000002956 ash Substances 0.000 abstract description 3
- 239000004568 cement Substances 0.000 abstract description 3
- 239000000571 coke Substances 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses an instrument used for measuring the level height of powdery or granular solid in storage bins, wherein, the powdery or granular solid comprises coal, coal powder, ash, coke, cement, mineral aggregate, and grain. Traditional level meters for solid belong to discontinuous measuring devices which can not carry out automatic level control. The level meter for solid of the utility model, which uses principle of force and electricity conversion, is composed of a primary element and a secondary display instrument, wherein, the primary element is a force and electricity converter. The utility model has the advantages of exquisite design, advanced technology, stable and reliable integral performance, high sensitivity, continuous measurement, visual and accurate value indication, simple manufacture and installation, convenient use and maintenance, and low cost. Level alarm and output contacts can be determined according to requirements for automatic control.
Description
A kind of solid material level meter that is used to measure Powdered or granular solids controlling level in the bunker.
Traditional solid material level meter, the simple and easy mechanical hook-up that normally relies on manual type to measure, the coal of measuring Pulverized Coal Bin coal position as the generating plant floats.This measuring method is that discontinuity is measured, and data variation is discontinuous, owing to be manual measurement, thereby can't carry out material level and control automatically.Just very rarely seen as for the solid material level self-operated measuring unit.In recent years, domestic have a kind of tuning fork level-sensing device that Pulverized Coal Bin coal position is measured in the fuel-burning power plant that is used for, and its primary element is a tuning fork, the vibration frequency of utilizing tuning fork itself and different Pulverized Coal Bin coal positions that record of vibration frequency after tuning fork contacts coal dust.The shortcoming of this level-sensing device is, measured material level also be interrupted and discontinuous, promptly when that to be between two adjacent tuning fork measuring points be what in the coal position is just unknown; In case it is just malfunctioning that coal dust is bonded on the tuning fork level-sensing device in addition.
The purpose of this utility model provides a kind of solid material level meter, for solving the malfunctioning product that designs of Pulverized Coal Bin tuning fork level-sensing device, can measure in the bunker such as powdery or granular solids controlling levels such as coal, coal dust, lime-ash, coke, cement, mineral aggregate, grains.
The solid material level meter that the utility model proposes is to utilize power electricity transfer principle to design.This solid material level meter is made of two parts, i.e. primary element-force-voltage transfer and secondary instrument-material level display.Force-voltage transfer is made of pressure transmitting plates (1), closed container (2), pressure transducer (3), and the closed container (2) that is full of the pressure transmission fluid by the centre between pressure transmitting plates (1) and the pressure transducer (3) is connected conducting.Force-voltage transfer is installed in the bottom of bunker, and its pressure transmission plate (1) is positioned at the inner contact of bunker solid material, and pressure transducer (3) is positioned at the bunker outside.If the long-pending proportion C of solid stockpile is a constant, the suffered pressure P in its surface equals the product of long-pending proportion C of solid stockpile and controlling level h when pressure transmitting plates (1) horizontal positioned:
The P=Ch following formula shows that when the long-pending proportion of solid stockpile was constant, the suffered pressure of pressure transmitting plates (1) was directly proportional with controlling level.According to law of connected vessels, this pressure will be delivered on the pressure transducer (3) by the pressure transmission fluid.Pressure transducer (3) is to utilize semiconductor gauge to finish the transducer of pressure-voltage transitions, transmits bar (5), strain beam (6) and strain gauge bridge (7) by shell (4), pressure and constitutes.When a pressure transmits bar (5) and passes to strain beam (6) by pressure, foil gauge resistance value in the strain bridge of being made up of four chip semiconductor foil gauges (7) that is attached on the strain beam (6) is changed, strain gauge bridge (7) out of trim, produce an electric signal that is directly proportional with pressure at output voltage terminal, finally finish the conversion of power electricity.Secondary instrument-material level display (8) is made of common integrated operational amplifier circuit, moving-coil table, light emitting diode, warning device, output contact etc., is connected with primary element by lead therebetween.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is according to the solid material level meter structural representation that the utility model proposes.
Fig. 2 is the primary element-force-voltage transfer structural representation according to the solid material level meter of the band cooling device that the utility model proposes.
Fig. 3 is the secondary instrument circuit connection figure of solid material level meter.
Fig. 4 is secondary instrument power circuit connection figure.
The drawing explanation:
Pressure transmitting plates (1), closed container (2), pressure transducer (3), shell (4), pressure transmits bar (5), strain beam (6), strain gauge bridge (7), material level display (8), cooling device (9);
IC
1-IC
126 of LM324 operational amplifiers,
IC
131 of CO36 Sheffer stroke gate,
IC
142 of LM556 type operational amplifiers,
IC
15, IC
182 of 7805 three-terminal voltage-stabilizings,
IC
16, IC
172 of 7812 three-terminal voltage-stabilizings,
ZL
1-ZL
36 of 50V/1A rectifier bridges,
2 of SCR 25V/0.5A controllable silicons,
D
1-D
1020 of LED light emitting diodes,
D
11-D
124 of 2CP diodes,
The two table meter of 1B, 2B 10mA moving-coil table 1,
1 of W 0.25W, Φ 50 loudspeaker,
2 of BP CYAL3-0.05 sensors,
1 of RD 250V/0.1A fuse,
3 of K1.K2 keyswitches,
3 of 1JC-3JC X14K3P plugs and sockets,
R
1-R
1020 of 50 Ω/0.25W resistance,
R
11-R
301.2K 20 of Ω/0.25W resistance,
R
212 of 500 Ω/0.25W resistance,
R
22, R
231.2K 4 of Ω/0.25W resistance,
R
244 of 51K Ω/0.25W potentiometer,
R
25, R
26, R
281.2K 6 of Ω/0.25W potentiometer,
R
29, R
304 of 30K Ω/0.25W potentiometer,
R
312 of 30K Ω/0.25W resistance,
R
322 of 100K Ω/0.25W resistance,
R
332 of 10K Ω/0.25W resistance,
R
342 of 8 Ω/0.25W resistance,
C
1, C
64 of 1 μ f/63V electric capacity,
C
2, C
7, C
56 of 10 μ f/25V electric capacity,
C
30.01 2 of μ f/63V electric capacity,
C
40.01 2 of μ f/63V electric capacity,
C
8-C
1414 of 220 μ f/25V electric capacity,
1 in B transformer,
Winding a: 220V.0.05A
Secondary Winding: (1) 14V 0.2A
×2
（2）14V 0.05A
×2
（3）7V 0.2A
×2
R
352 of 470 Ω/0.25W potentiometer,
R
272 of 10K Ω/0.25W potentiometer.
Below in conjunction with accompanying drawing in detail concrete apparatus structure and the operational detail that the utility model proposed is described in detail.
Embodiment 1: Pulverized Coal Bin solid material level meter
The Pulverized Coal Bin solid material level meter that the utility model provides is made of primary element-force-voltage transfer and secondary instrument-material level display, as shown in Figure 1.Force-voltage transfer is made of pressure transmitting plates (1), closed container (2) and pressure transducer (3), be connected conducting by closed container (2) between pressure transmitting plates (1) and the pressure transducer (3), closed container is full of the pressure transmission fluid in (2).
Pressure transmitting plates (1) is made wave by a stainless steel or other elasticity preferred metal thin plate; Closed container (2) is a column shape container or conduit; Pressure transducer (3) is the transducer that an employing semiconductor gauge is finished pressure-voltage transitions, transmits bar (5), strain beam (6), strain gauge bridge (7) formation by shell (4), pressure.Strain gauge bridge (7) is made up of four chip semiconductor foil gauges and is attached on the strain beam (6).Input 6 volts of DC voltage in strain gauge bridge (7) two ends two are connected to secondary instrument-material level display (8) in addition, output millivolt voltage signal.The output contact etc. that the moving-coil table, segmentation that material level display (8) shows controlling level by integrated operational amplifier circuit, continuously shows light emitting diode, the height material level warning device of controlling level and be used for control automatically partly constitutes.Material level display (8) is two list structures, and promptly an instrument is joined two force-voltage transfers, measures left and right 2 the coal position height of Pulverized Coal Bin.Primary element-the force-voltage transfer of this solid material level meter, its relative error be less than 0.5%, temperature drift＜0.05%/℃, this solid material level instrumentation accuracy of measurement＜5%.
The utility model and traditional level-sensing device comparison, it is reliable and stable to have overall performance, highly sensitive, to measure continuously, indicating value is intuitively accurate, multiple functional, make, install simple, use, easy to maintenance, advantage such as with low cost, not only can measure Pulverized Coal Bin coal position, and can measure other such as powdery or granular solids controlling levels such as coal, coal ash, coke, cement, ore, grains.
Embodiment 2: the solid material level meter that has cooling device
Cooling device (9) also can be made into a coiled pipe and places in the closed container (2).
Claims (4)
1, a kind of solid material level meter that is used to measure powdery or granular solids controlling level, form by primary element one force-voltage transfer and secondary instrument one material level display [8], be connected by lead therebetween, secondary instrument one material level display [8] wherein is by common integrated operational amplifier circuit, the moving-coil table, light emitting diode, warning device, formations such as input contact, this solid material level meter is characterised in that its primary element one force-voltage transfer, by pressure transmitting plates [1], closed container [2] and pressure transducer [3] constitute, and are connected conducting by closed container [2] between pressure transmitting plates [1] and the pressure transducer [3].
2, solid material level meter according to claim 1 is characterized in that its pressure transmitting plates (1) is that a stainless sheet steel or other elasticity preferred metal thin plate are made wave; Closed container is a column shape container or conduit.
3, solid material level meter according to claim 1 is characterized in that its pressure transducer (3) transmits bar (5), strain beam (6), strain gauge bridge (7) formation by shell (4), pressure.
4, solid material level meter according to claim 1, it is characterized in that its primary element-force-voltage transfer, also include a cooling device (9), this cooling device (9) is a sleeve pipe, be laid in closed container (2) around outer wall, or make a coiled pipe and place in the closed container (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89210482 CN2058747U (en) | 1989-05-12 | 1989-05-12 | Leve meter for solid matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89210482 CN2058747U (en) | 1989-05-12 | 1989-05-12 | Leve meter for solid matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2058747U true CN2058747U (en) | 1990-06-27 |
Family
ID=4866850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89210482 Withdrawn CN2058747U (en) | 1989-05-12 | 1989-05-12 | Leve meter for solid matter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2058747U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102693863A (en) * | 2012-06-07 | 2012-09-26 | 徐州中矿奥特麦科技有限公司 | Anti-burying tilt switch |
| CN102706403A (en) * | 2012-06-08 | 2012-10-03 | 大兴安岭云冶矿业开发有限公司 | Liquid level measuring device for autoclave |
| WO2013013520A1 (en) * | 2011-07-28 | 2013-01-31 | 湖南三一智能控制设备有限公司 | Detection device and concrete pumping apparatus |
| CN104422493A (en) * | 2013-08-26 | 2015-03-18 | 北汽福田汽车股份有限公司 | Liquid level detection device and liquid storage device |
| CN106765232A (en) * | 2016-12-16 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | The dry deslagging controlled using resistance variation tendency locks wind system |
| CN108287005A (en) * | 2018-03-16 | 2018-07-17 | 中国矿业大学(北京) | A kind of material-level detection system |
-
1989
- 1989-05-12 CN CN 89210482 patent/CN2058747U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013013520A1 (en) * | 2011-07-28 | 2013-01-31 | 湖南三一智能控制设备有限公司 | Detection device and concrete pumping apparatus |
| CN102693863A (en) * | 2012-06-07 | 2012-09-26 | 徐州中矿奥特麦科技有限公司 | Anti-burying tilt switch |
| CN102706403A (en) * | 2012-06-08 | 2012-10-03 | 大兴安岭云冶矿业开发有限公司 | Liquid level measuring device for autoclave |
| CN104422493A (en) * | 2013-08-26 | 2015-03-18 | 北汽福田汽车股份有限公司 | Liquid level detection device and liquid storage device |
| CN106765232A (en) * | 2016-12-16 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | The dry deslagging controlled using resistance variation tendency locks wind system |
| CN106765232B (en) * | 2016-12-16 | 2023-04-07 | 大唐东北电力试验研究所有限公司 | Dry slag discharging and air locking system controlled by resistance variation trend |
| CN108287005A (en) * | 2018-03-16 | 2018-07-17 | 中国矿业大学(北京) | A kind of material-level detection system |
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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 |