CN202110117U - Air blown on-line ore pulp density/concentration measuring device - Google Patents
Air blown on-line ore pulp density/concentration measuring device Download PDFInfo
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- CN202110117U CN202110117U CN2011202004846U CN201120200484U CN202110117U CN 202110117 U CN202110117 U CN 202110117U CN 2011202004846 U CN2011202004846 U CN 2011202004846U CN 201120200484 U CN201120200484 U CN 201120200484U CN 202110117 U CN202110117 U CN 202110117U
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Abstract
The utility model discloses an air blown on-line ore pulp density/concentration measuring device. An instrument gas source is connected to one end of a pressure reducing filter through a gas source pipe, the other end of the pressure reducing filter is communicated with the first way of a gas source tee joint, the second way of the gas source tee joint is communicated with a high-pressure needle valve and a high-pressure guiding pipe and then communicated with a high-pressure tee joint of an air blowing pipe, the second way of the high-pressure tee joint is communicated with a high-pressure air blowing pipe, and the third way of the high-pressure tee joint is connected with a high-pressure interface of a differential pressure transmitter; the third way of the gas source tee joint is communicated with a low-pressure needle valve and a low-pressure guiding pipe and then communicated with a low-pressure tee joint, the second way of the low-pressure tee joint is communicated with a low-pressure air blowing pipe, and the third way of the low-pressure tee joint is connected with a low-pressure interface of the differential pressure transmitter; and the high and low-pressure air blowing pipes are fixedly connected to flanges, and high and low-pressure cup lids are arranged at the bottoms of the high and low-pressure air blowing pipes. The device overcomes the defects that on-line real-time monitoring cannot be performed in manual measurement, poor precision is produced in gravity method measurement and a nuclear density/concentration meter has low safety; and the device is convenient for operation and has stable performance.
Description
Technical field
The utility model relates to a kind of pulp density/apparatus for measuring concentration, more particularly is exactly a kind of online pulp density/apparatus for measuring concentration of air blowing type that can online detection pulp density/concentration.
Background technology
Ore pulp concentration meter is to be used for the measurement mechanism of Nonferrous Metallurgical Process for pulp density/concentration.At present, visible pulp density measurement mechanism has following several kinds, and a kind of is hand dipping concentration kettle method just; Though this method can be measured the density and the concentration of ore pulp, can not onlinely detect, measuring accuracy is low; Second method is the online weighing method, and this method can realize the continuous on-line measurement to ore pulp, but the influence that is shaken in the measuring process; Can cause bigger measuring error, this in addition method needs sampler, because ore pulp viscosity is big; Can cause measuring tube to stop up, the failure rate of device is higher, and the maintenance of device is big; The third is cuclear density/densimeter; It is to utilize under the certain condition of measured object thickness, and different density absorbs different principles to radiation, density of medium or concentration such as ore pulp, grout, paper pulp in the energy measurement pipeline; But utilize this mode need use radioactive source; Security is not high, can not directly measure ore pulp in the tank body, demarcates complicated.
Summary of the invention
The utility model provides a kind of measuring accuracy high, and range ability is wide, can realize the online pulp density/apparatus for measuring concentration of air blowing type of continuous coverage.
For this reason; Adopt following technical scheme: the online pulp density/apparatus for measuring concentration of a kind of air blowing type; Instrument air is connected to an end of vacuum filter through the source of the gas pipe, and the other end of this filtering pressure reducer is communicated with the logical of source of the gas threeway, and second of this source of the gas threeway is connected with the threeway of gas blow pipe high-pressure side after leading to high pressure needle valve and high pressure pressure guiding pipe; The high pressure blow-gas pipe is led in second of this high-pressure side threeway, and its threeway is connected with the high voltage interface of differential pressure transmitter; The threeway of said source of the gas threeway is connected with the low-pressure side threeway after being communicated with low pressure needle valve and low pressure pressure guiding pipe, and the low pressure gas blow pipe is led in second of this low-pressure side threeway, and its threeway is connected with the low-voltage interface of said differential pressure transmitter; Said high and low pressure gas blow pipe is fixed on the flange that is installed in ore pulp storage tank oral area and its bottom is separately installed with high and low compression cup cover;
Said differential pressure transmitter through output+,-terminal is connected with 2, No. 3 terminals of power distribution isolator successively; This isolation distributor is connected with CH1+, the CH1-terminal of computing displayed record unit through No. 8 terminals 7, successively, the 24v of this computing displayed record unit+,-terminal links to each other with 9,10 terminals of said power distribution isolator successively; Said computing displayed record unit through the RJ45 interface with the teletransmission of ethernet communication agreement to the process control system.
The measuring principle of the utility model is following:
The concentration of ore pulp and the relation formula of density are:
C=[ρ
2(ρ
1-1)/?ρ
1(ρ
2-1)]?×100% （1）
In the formula:
C-pulp density, i.e. solids content percentage by weight in the ore pulp; ρ
1-pulp density, kg/m
3
ρ
2-former mineral density, kg/m
3
Can measure pulp density ρ by formula (1) as long as can draw
1, just can obtain pulp density C through computing.
According to the hydrostatic pressure formula, the static pressure in the ore pulp and the relation of density as shown in the formula:
ρ=ΔP/gΔh （2）
In the formula:
Δ P-ore pulp differential static pressure, Pa; ρ-pulp density, kg/m
3G-acceleration of gravity, 9.8N/kg;
Δ h-high-low pressure measuring tube length difference, m;
Can know by (2) formula; Pulp density ρ equals the product of the differential static pressure of ore pulp divided by gravity acceleration g and high-low pressure measuring tube length difference Δ h; Gravity acceleration g and high-low pressure measuring tube length difference are constant in the formula, as long as therefore measure the density that the differential static pressure of ore pulp just can obtain ore pulp.
The utility model adopts the air blowing method on the basis of hydrostatic pressure measure theory be that the pulp density measurement provides novel concept more reliably, and it specifically comprises:
1. adopted the air blowing type metering system, ore pulp direct contact pressure sensor in the measuring process has solved ore pulp to problems such as the bonding of sensor, corrosion, measures more reliable.
2. adopted the high and low pressure gas blow pipe, solved in the measuring process in the ore pulp storage tank liquid level change the influence of measurement result.
3. gas blow pipe venting part has adopted cup to be covered with meter, has solved measuring channel obstruction in the measuring process.
4. adopt the high-precision intelligent differential pressure transmitter, measuring accuracy is high, demarcates simple.
In a word, the utility model has overcome manual measurement can not on-line real time monitoring, the gravitational method measuring accuracy is poor, measurement result receives vibration influence and cuclear density/densimeter security is not high, and the shortcoming that can not measure pulp density in the storage tank is easy to operate, stable performance.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to Fig. 1; Online pulp density/the apparatus for measuring concentration of a kind of air blowing type; 0.2～0.3MPa instrument air (air or nitrogen) is nylon or copper tube through material, specification is that the source of the gas pipe 1 of DN10 is connected to vacuum filter 2 one ends that model is PRF400, and the impurity in the said source of the gas of elimination also reduces to 0.1～0.12MPa with pressure; It is stainless steel that the other end of this filtering pressure reducer 2 is communicated with material; Specification is source of the gas threeway 3 one logical and source of the gas is divided into two-way of DN10, and one road gas is that red copper, specification are that pressure guiding pipe 5 backs of DN10 are communicated with gas blow pipe high-pressure side threeway 6 through needle valve 4, material, and it is stainless steel that material is led in second of this high-pressure side threeway 6; Specification is the high pressure blow-gas pipe 8 of DN15, is connected and its threeway and model are high pressure (H) interface of the differential pressure transmitter 15 of EJA120; Regulate high-pressure needle valve 3, overflow from the cup cover 9 that is welded on high pressure blow-gas pipe 8 bottoms up to the bubble that trace is arranged, accomplish high pressure and detect, the length of high pressure blow-gas pipe 10 is confirmed according to the density of ore pulp and the height of ore pulp storage tank, is generally 1 ~ 1.5 meter.The threeway of said source of the gas threeway 3 is communicated with low pressure needle valve 10 and material is that red copper, specification are that DN10 low pressure pressure guiding pipe 11 backs are connected with low-pressure side threeway 12; Low pressure gas blow pipe 13 is led in second of this low-pressure side threeway 12, and its threeway is connected with low pressure (L) interface of said differential pressure transmitter 15; Regulate low pressure needle valve 10, overflow from the cup cover 14 that is welded on low pressure gas blow pipe 13 bottoms up to the bubble that trace is arranged, accomplish low pressure measurement, the length of low pressure gas blow pipe 10 is confirmed according to the density of ore pulp and the height of ore pulp storage tank, is generally 0.5 ~ 1 meter.Said high and low pressure gas blow pipe 8,13 is welded on the flange 7 that is installed in ore pulp storage tank oral area, and the material of said high and low compression cup cover 9,14 is a stainless steel, and specification is DN50, highly is 65mm.
Said differential pressure transmitter 15 converts high-low pressure pressure differential signal delta P into the 4-20mA dc current signal; Through output+,-terminal is connected respectively to No. 2 and No. 3 terminals that model is a NPGL-C2D power distribution isolator 16; And pass through signal wire to differential pressure transmitter 14 distribution; It is the CH1+ and the CH1-terminal of DX102 computing displayed record unit 17 that the voltage signal that isolation distributor 16 converts the current signal of 4-20mA into 1-5v inserts models through No. 7 and No. 8 terminals, the 24v DC+ of this computing displayed record unit 17 ,-terminal is connected to its power supply with 9,10 terminals of power distribution isolator respectively, and computing displayed record unit 17 is according to input signal; Obtain the pulp density signal; According to density-concentration conversion formula, calculate the concentration value of ore pulp, and on the liquid crystal panel of computing displayed record unit 17, show.Pulp density/concentration signal that instrument records through the RJ45 interface with the teletransmission of ethernet communication agreement to the process control system.
The above content is merely the basic explanation under this utility model design, and according to any equivalent transformation that this programme is done, is the utility model protection domain.
Claims (1)
1. online pulp density/apparatus for measuring concentration of air blowing type; It is characterized in that: instrument air is connected to an end of vacuum filter (2) through source of the gas pipe (1); The other end of this filtering pressure reducer (2) is communicated with one of source of the gas threeway (3) and leads to; High pressure needle valve (4) is led in second of this source of the gas threeway (3) and high pressure pressure guiding pipe (5) back is connected with gas blow pipe high-pressure side threeway (6); High pressure blow-gas pipe (8) is led in second of this high-pressure side threeway (6), and its threeway is connected with the high voltage interface of differential pressure transmitter (15); The threeway of said source of the gas threeway (3) is communicated with low pressure needle valve (10) and low pressure pressure guiding pipe (11) back is connected with low-pressure side threeway (12); Low pressure gas blow pipe (13) is led in second of this low-pressure side threeway (12), and its threeway is connected with the low-voltage interface of said differential pressure transmitter (15); Said high and low pressure gas blow pipe (8,13) is fixed on the flange (7) that is installed in ore pulp storage tank oral area and its bottom is separately installed with high and low compression cup cover (9,14);
Said differential pressure transmitter (15) through output+,-terminal is connected with 2, No. 3 terminals of power distribution isolator (16) successively; This isolation distributor (16) is connected with CH1+, the CH1-terminal of computing displayed record unit (17) through No. 8 terminals 7, successively, the 24v of this computing displayed record unit (17)+,-terminal links to each other with 9,10 terminals of said power distribution isolator (16) successively; Said computing displayed record unit (17) through the RJ45 interface with the teletransmission of ethernet communication agreement to the process control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202004846U CN202110117U (en) | 2011-06-15 | 2011-06-15 | Air blown on-line ore pulp density/concentration measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202004846U CN202110117U (en) | 2011-06-15 | 2011-06-15 | Air blown on-line ore pulp density/concentration measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202110117U true CN202110117U (en) | 2012-01-11 |
Family
ID=45435561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202004846U Expired - Fee Related CN202110117U (en) | 2011-06-15 | 2011-06-15 | Air blown on-line ore pulp density/concentration measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202110117U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868823A (en) * | 2014-03-13 | 2014-06-18 | 昆明理工大学 | Device and method for detecting underflow concentration pressure difference of inclined plate thickener |
| CN104236786A (en) * | 2013-06-09 | 2014-12-24 | 北京强度环境研究所 | Ultra-low temperature measurement system and method for deflation testes of decompressor |
| CN109001073A (en) * | 2018-06-01 | 2018-12-14 | 东北大学 | A kind of Novel pulp densimeter based on ELM network and a kind of measurement method |
-
2011
- 2011-06-15 CN CN2011202004846U patent/CN202110117U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236786A (en) * | 2013-06-09 | 2014-12-24 | 北京强度环境研究所 | Ultra-low temperature measurement system and method for deflation testes of decompressor |
| CN104236786B (en) * | 2013-06-09 | 2016-08-10 | 北京强度环境研究所 | A kind of decompressor gassing experiment ultralow temperature measures System and method for |
| CN103868823A (en) * | 2014-03-13 | 2014-06-18 | 昆明理工大学 | Device and method for detecting underflow concentration pressure difference of inclined plate thickener |
| CN109001073A (en) * | 2018-06-01 | 2018-12-14 | 东北大学 | A kind of Novel pulp densimeter based on ELM network and a kind of measurement method |
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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: 20120111 Termination date: 20140615 |
|
| EXPY | Termination of patent right or utility model |