CN202734909U - Fluidized ash material level detector - Google Patents
Fluidized ash material level detector Download PDFInfo
- Publication number
- CN202734909U CN202734909U CN 201220358340 CN201220358340U CN202734909U CN 202734909 U CN202734909 U CN 202734909U CN 201220358340 CN201220358340 CN 201220358340 CN 201220358340 U CN201220358340 U CN 201220358340U CN 202734909 U CN202734909 U CN 202734909U
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- China
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- connecting pipe
- gas
- pressure unit
- material level
- ash
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Abstract
The utility model discloses a fluidized ash material level detector, which comprises a working gas source, an air filtering pressure reducer, a gas flowmeter, a three-way joint, a nozzle and a pressure transmitter, wherein the working gas source, the air filtering pressure reducer, the gas flowmeter, the three-way joint and the pressure transmitter are connected with one another in sequence by connecting pipes; a manual valve I is arranged on the connecting pipe between the working gas source and the air filtering pressure reducer; a manual valve II is arranged on the connecting pipe between the three-way joint and the pressure transmitter; the other port of the three-way joint is connected with the nozzle by a connecting pipe; and the pressure transmitter is used for converting a physical gas pressure signal into a standard current signal. The fluidized ash level detector disclosed by the utility model can immediately work online with high resolution; and through analog quantity output, the fluidized state and material level of the ashes in electric precipitation ash hopper of a thermal power plant are detected, so that safety problems in the ash material conveying or storing process are solved.
Description
Technical field
The utility model is applicable to the electric precipitation ash bucket level monitoring of thermal power generation corporations or association area, specifically a kind of fluidisation ash material level detection instrument.
Background technology
At present, known material level revolves level-sensing device, Plumb-bob Material Level Meter etc. in respect of ultrasonic material level detection unit, radar guided wave level-sensing device, nucleon level-sensing device, radio frequency admittance level-sensing device, resistance.The principle of work of ultrasound wave and radar guided wave level-sensing device, to utilize ultrasound wave or electromagnetic wave emission and echo time, be converted into the measured medium material level, belong to Non-contact type level gage, this level-sensing device is had relatively high expectations to surveying reference field, can continuous coverage the output analog signals, still, if echoed signal is weak or disturb then can't Measurement accuracy and normal operation; The principle of work of nucleon level-sensing device is to survey intrinsic radioactive dosage in the goods and materials, and quantization conversion goes out the homologue stockpile and puts height, although this level-sensing device can the continuous coverage analog output, resolution is low, and sensitivity is low, and therefore, error is also larger; Radio frequency admittance then contacts measured medium with the blocking rotary type level-sensing device, and level altitude is installed, and sends respective switch amount signal when measured medium touches sniffer; Plumb-bob Material Level Meter converses material position height according to the length that discharges weight, but needs certain anchorage force could receive hammer in the weight dispose procedure.So, can't the Measurement accuracy fluid or class fluid (fluidisation ash) thing position height; The easily adhesion measured medium generation wrong report of level-sensing device probe is revolved in radio frequency admittance and resistance.That is, present known level-sensing device can't carry out the comprehensive survey of ash material fluidized state and material level.
The utility model content
For overcome existing level-sensing device can not exploration vessel in the deficiency of ash material fluidized state and material level, the utility model provides a kind of fluidisation ash material level detection instrument, can work online to instant high resolving power, analog output, ash material in the electric precipitation ash bucket of fuel-burning power plant is carried out fluidized state and material-height exploring, solved the safety problem in ash material conveying or the storage process.
The technical solution adopted in the utility model is:
Fluidisation ash material level detection instrument, it is characterized in that: include the work source of the gas, the air filtration decompressor, gas meter, three-way connection, nozzle, pressure unit, described work source of the gas, the air filtration decompressor, gas meter, three-way connection, pressure unit is linked in sequence by connecting pipe, connecting pipe between work source of the gas and the air filtration decompressor is provided with hand valve one, connecting pipe between three-way connection and the pressure unit is provided with hand valve two, another interface of three-way connection is connected to a nozzle by connecting pipe, and described pressure unit is the current signal output of standard with the gaseous tension signal transition of physics.
Described pressure unit is connected with a 24VDC power supply, output loop of pressure unit and 24VDC electric power generating composition, and the current signal of output is 4-20mA.
Described work source of the gas places a gas-holder.
The utility model is taked the fluid mechanics principle of work, utilizes outside positive pressure air, forms detection instrument via air filtration decompressor, gas meter, three-way connection, nozzle and pressure unit external member.Bottom the electric precipitation ash bucket, introduce the positive pressure air that the utility model is exported through nozzle, and the flow field interaction forms steady flow field with the fluidisation ash, after the grey flow field of the air flow field that nozzle is front and the fluidisation behind the nozzle was relatively stable, pressure field reached relative equilibrium.When fluidisation ash position changes, set up again new pressure field relative equilibrium, this funtcional relationship detects the material level of corresponding fluidized state through pressure unit, and exports the 4-20mA standard signal, deliver to secondary instrument or computer supervisory control system, converse the ash position height under the corresponding fluidized state.The effect of air filtration decompressor is the further purified treatment of pressurized air that will introduce, and adjustment is output as the aequum stage pressure, gas flow adjusting means is used for regulating fluidisation ash state institute air demand, nozzle is used for positive pressure air is introduced the fluidisation ash hopper, and pressure unit is used for the pressure field pressure detection.Because introducing dry positive pressure air, so auxiliary ash material fluidisation, if during the critical fluidized state of measured medium, nozzle positive pressure gas pressure increases to vacuum filter and adjusts the output quantity stage pressure, data show full scale, secondary instrument (or computer supervisory control system) may be defined as data from overflow, and reflection ash material fluidized state is unusual, thereby has realized the detection of fluidized state ash position.When the appearance fluidized state is unusual, can with pressure transmitter isolation, improve short its fluidisation of air pressure magnitude.
The beneficial effects of the utility model are:
The utility model can work online to instant high resolving power, and analog output carries out fluidized state and material-height exploring to the ash material in the electric precipitation ash bucket of fuel-burning power plant, has solved the safety problem in ash material conveying or the storage process.
Description of drawings
Fig. 1 is principle schematic of the present utility model.
Embodiment
As shown in Figure 1, fluidisation ash material level detection instrument, include the work source of the gas, air filtration decompressor 4, gas meter 5, three-way connection 6, nozzle 7, pressure unit 9, the work source of the gas, air filtration decompressor 4, gas meter 5, three-way connection 6, pressure unit 9 is linked in sequence by connecting pipe 2, connecting pipe 2 between work source of the gas and the air filtration decompressor 4 is provided with hand valve 3, connecting pipe 2 between three-way connection 6 and the pressure unit 9 is provided with hand valve 8, another interface of three-way connection 6 is connected to a nozzle 7 by connecting pipe 2, nozzle 7 places the bottom of electric precipitation ash bucket 11, and pressure unit 9 is the current signal output of standard with the gaseous tension signal transition of physics.
Pressure unit 9 is connected with a 24VDC power supply 10, and pressure unit 9 consists of an output loop with 24VDC power supply 10, and the current signal of output is 4-20mA.
The work source of the gas places a gas-holder 1.
Claims (3)
1. fluidisation ash material level detection instrument, it is characterized in that: include the work source of the gas, the air filtration decompressor, gas meter, three-way connection, nozzle, pressure unit, described work source of the gas, the air filtration decompressor, gas meter, three-way connection, pressure unit is linked in sequence by connecting pipe, connecting pipe between work source of the gas and the air filtration decompressor is provided with hand valve one, connecting pipe between three-way connection and the pressure unit is provided with hand valve two, another interface of three-way connection is connected to a nozzle by connecting pipe, and described pressure unit is the current signal output of standard with the gaseous tension signal transition of physics.
2. fluidisation according to claim 1 ash material level detection instrument, it is characterized in that: described pressure unit is connected with a 24VDC power supply, output loop of pressure unit and 24VDC electric power generating composition, the current signal of output is 4-20mA.
3. fluidisation according to claim 1 ash material level detection instrument, it is characterized in that: described work source of the gas places a gas-holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358340 CN202734909U (en) | 2012-07-23 | 2012-07-23 | Fluidized ash material level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220358340 CN202734909U (en) | 2012-07-23 | 2012-07-23 | Fluidized ash material level detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202734909U true CN202734909U (en) | 2013-02-13 |
Family
ID=47660599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220358340 Expired - Fee Related CN202734909U (en) | 2012-07-23 | 2012-07-23 | Fluidized ash material level detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202734909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200798A (en) * | 2018-10-25 | 2019-01-15 | 南京龙源环保有限公司 | A kind of detection device and application method of semi-dry desulphurization dust collector ash hopper material position |
-
2012
- 2012-07-23 CN CN 201220358340 patent/CN202734909U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200798A (en) * | 2018-10-25 | 2019-01-15 | 南京龙源环保有限公司 | A kind of detection device and application method of semi-dry desulphurization dust collector ash hopper material position |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180723 |