CN204203030U - A kind of intelligent densitometer - Google Patents

A kind of intelligent densitometer Download PDF

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Publication number
CN204203030U
CN204203030U CN201420541975.0U CN201420541975U CN204203030U CN 204203030 U CN204203030 U CN 204203030U CN 201420541975 U CN201420541975 U CN 201420541975U CN 204203030 U CN204203030 U CN 204203030U
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CN
China
Prior art keywords
bellows
intelligent
sampling thief
densitometer
converter
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.)
Expired - Fee Related
Application number
CN201420541975.0U
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Chinese (zh)
Inventor
熊寿延
杨作峰
孙培君
赵玉梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JINAN JUNYANG AUTOMATION TECHNOLOGY Co Ltd
YANTAI DEVELOPMENT ZONE AUTO INSTRUMENT MAKING Co Ltd
Original Assignee
JINAN JUNYANG AUTOMATION TECHNOLOGY Co Ltd
YANTAI DEVELOPMENT ZONE AUTO INSTRUMENT MAKING Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by JINAN JUNYANG AUTOMATION TECHNOLOGY Co Ltd, YANTAI DEVELOPMENT ZONE AUTO INSTRUMENT MAKING Co Ltd filed Critical JINAN JUNYANG AUTOMATION TECHNOLOGY Co Ltd
Priority to CN201420541975.0U priority Critical patent/CN204203030U/en
Application granted granted Critical
Publication of CN204203030U publication Critical patent/CN204203030U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of intelligent densitometer, belong to thermal meter detection field.The technical solution of the utility model is a kind of intelligent densitometer, is made up of conduit, sensor, converter and sampling thief; Conduit has two bellows, the distance between two bellows is definite value, and the end of conduit contains temperature sensor; Differential pressure method Δ P=ρ × g × H is utilized to calculate density p and compensate calculating according to medium temperature.Adopt different sampling thiefs can detect the interface of various liquid, potpourri, the density of ore pulp, concentration and two kinds of different liquids according to different detected media.The beneficial effects of the utility model are: have rational in infrastructure, safe and reliable, measure the advantages such as relatively accurate, life-span is long, be to various Media density, the particularly mend gene that detects of various pulp density.

Description

A kind of intelligent densitometer
Technical field
The utility model relates to a kind of intelligent densitometer, belongs to thermal meter detection field.
Background technology
The density or the concentration that detect measured medium is all needed in multiple field such as filling, coal washery, soft drink, papermaking, petrochemical complex of various mine (as iron ore, gold mine).As filling in mine needs ore in sand form, cement, water to mix by a certain percentage, inject and adopted in empty tunnel, prevent from subsiding, then must detect the density of its potpourri, to verify its coagulability; Its water and coal dust mixture density is detected in coal washery, prevents precipitation or blocking; Etc. every may affect produce final quality (as beverage, alcohol, lubrication wet goods) production line, need the combined amount part controlling various material, all need to carry out density or Concentration Testing, to guarantee product quality.Its density of current detection is particularly at mine industry, and the case that success detects is with Nuclear Instrument (C s137), ultrasound examination does not have successful case.Due to Nuclear Instrument (C s137) purchase needs to declare, and run duration needs the supervision and the monitoring that accept environmental administration, also there is possibility of leaking, large to enterprise operation cost, safeguard meticulous, and result enterprise can just not detect in accident, may there is potential safety hazard to future.
Summary of the invention
The purpose of this utility model is: provide a kind of rational in infrastructure, resistance is relatively little, detect one relatively accurate, easy for installation intelligence densitometer.
In order to overcome the defect existed in background technology, the technical scheme that the utility model provides is: a kind of intelligent densitometer, is made up of intelligent density transmitter and sampling thief; It is characterized in that described intelligent density transmitter comprises conduit, sensor, converter; Described conduit is exactly a stainless-steel tube, and positions different on described stainless-steel tube is embedded with two bellows, and two bellows are spacing structure, at the end mounting temperature sensor of described stainless-steel tube, at described stainless-steel tube upper end mounting converter; Described sensor is arranged in bellows or converter, is connected with bellows, detects the measured medium pressure that bears of bellows, and namely bellows is used to detect measured medium pressure, detects the pressure reduction (P1, P2, Δ P=P1-P2) between two bellows; Described sampling thief is a cylindrical shell with import and export, overflow vent, balance port; Intelligence density transmitter adopts the mounting structure inserted in sampling thief.
Described conduit is exactly a stainless-steel tube.Bottom stainless-steel tube, fix a temperature sensor, as Pt100 or Pt500, then shut, this signal, by wire access converter, does temperature compensation.In the middle part of stainless-steel tube, open two holes respectively, centered by hole, difference each installation bellows, is spaced a distance H, as 500mm.Bellows is a flat right cylinder be made with stainless steel, and one of cylindrical two planar end surfaces adopts wear-resisting isolation diaphragm, and its lap is stainless steel.Isolation diaphragm had both had the conducted susceptibility that elasticity ensures pressure, also had wearing quality; When measured medium temperature is greater than 100 DEG C, isolation diaphragm welds the flexible pipe that is full of incompressible liquid (as silicone oil), the power experienced is conducted to sensor, and namely sensor and bellows are connected, and sensor is installed in converter; When measured medium temperature is less than 100 DEG C, isolation diaphragm is pasted onto (sensor and bellows are connected) on the surface particles of sensor, direct feeling measured medium pressure, then signal is passed to converter, certainly also isolation diaphragm can will weld the flexible pipe that is full of incompressible liquid (as silicone oil), the power experienced is conducted to sensor; Namely sensor can be arranged in bellows, also can be arranged in converter.Then in the cambered surface place holes drilled through of right cylinder bellows, it is arranged on respectively hole place on stainless-steel tube.On the top of stainless-steel tube, one flange is installed, is convenient to be connected with sampling thief.
Described sensor is exactly pressure transducer or differential pressure pick-up.Adopt two pressure transducers when sensor is installed in bellows, two signals pass to converter; Adopt differential pressure pick-up when sensor is installed in converter, differential pressure signal is passed to converter.
Described converter is exactly electronic converter unit, receives each pressure signal P 1, P2 (or differential pressure signal Δ P) carries out correlation computations.Measured medium density is ρ, acceleration of gravity is g, two bellows distances are H, then Δ P=ρ × g × H, calculate density p, according to the temperature (temperature sensor of the catheter tip described in utilization) of detected medium, compensate and calculate outputting standard signal (as 4 ~ 20mADC) to Displaying Meter or computing machine.For the static liquid in various tank body, because its density p is known, the liquid level of its two media can be detected.Because density-concentration has certain relation, also can the concentration of its potpourri of detection computations.
Above facility forms a complete density transmitter.
Described sampling thief is a stainless steel cylinder.
For the detection of such as fluid density or Interface detection and static medium, sampling thief is made the cylindrical shell that a side straps has two flange connecting pipes, has induction pipe, outlet, by-pass structure, two flange connecting pipes are connected with process equipment, and lower flange adapter is import, and upper flange adapter is outlet; Upper weld one flange of cylindrical shell, the upper and lower of cylindrical shell connects a conduit respectively simultaneously, and top is exhausr port bottom is sewage draining exit, ensures that measured medium is full of whole sampling thief; Density transmitter is inserted sampling thief, fixes with bolt, nut joint flange.
For the detection of pulp density or Concentration Testing and dynamic media, sampling thief has induction pipe, outlet, balance port, overflow vent.Two pairs of flange connecting pipes (import caliber is greater than outlet caliber) are made in cylindrical shell two sides, two flange connecting pipes of every side are communicated with, then the thief hole (return port) of process equipment or pipeline is connected to, make sewage draining exit in cylindrical shell bottom simultaneously, top connects flange, forms a complete sampling thief.Density transmitter is inserted sampling thief, fixes with bolt, nut joint flange.It is noted that the pipeline of sampling thief outlet side is higher than sampling cylindrical shell, ensure that sampling thief can be full of medium; It is that its upper inlet can play equilibrium activity in order to ensure that medium fully can enter sampling thief that on the suction side is made two flange-interfaces; It is for ensureing that medium fully can flow out sampling thief that outlet side is made two flange-interfaces, its upper inlet has overflow effect, the guarantee that its caliber is less than import at any time sampler is full of medium, higher than cylindrical shell, outlet conduit ensures that medium is when reflux technique equipment or pipeline, does not produce vacuum phenomenon because of the difference in height existed.
The beneficial effects of the utility model are: after adopting said structure, both solved the problem of sampling of measured medium, and also solved the worry of maintainer, when carrying out safeguarding or changing, are directly closed by sample tap and need not stop production.
The utility model solves the defect existed in background technology.Have rational in infrastructure, safe and reliable, measure the advantages such as relatively accurate, life-span is long, be to various Media density, the particularly mend gene that detects of various pulp density.
Accompanying drawing explanation
Fig. 1 is a kind of intelligent densitometer structural representation;
Fig. 2 is a kind of intelligent densitometer flow media sampler schematic diagram;
Fig. 3 is a kind of intelligent densitometer static medium sampler schematic diagram;
Fig. 4 is a kind of intelligent densitometer low temperature bellows A-A diagrammatic cross-section;
Fig. 5 is a kind of schematic diagram of intelligent densitometer high temperature bellows B-B section.
Embodiment
Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail.Shown accompanying drawing is the schematic diagram of simplification, and only basic structure of the present utility model is described in a schematic way, therefore it only shows the formation relevant with the utility model.
Embodiment 1, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5.
In FIG, (1) is lower bellows, is a right cylinder be made with stainless steel, and one of cylindrical two planar end surfaces adopts wear-resisting isolation diaphragm, and its lap is stainless steel, is used for detecting the pressure P 1 of bottom; (2) being upper bellows, is a right cylinder be made with stainless steel, and one of cylindrical two planar end surfaces adopts wear-resisting isolation diaphragm, and its lap is stainless steel, and be used for detecting the pressure P 2 on top, (3) are conduits, are made by stainless-steel tube; (4) be mounting flange; (5) be signal converter.
In fig. 2, (5) are signal converters, include or not containing sensor, send output unit for becoming; (6) be stainless steel cylinder, conduit (3) inserts; (7) be induction pipe, measured medium flows into thus; (8) be lower inlet pipe, the air in cylindrical shell (6) can be extruded; (9) be upper inlet pipe, ensure that medium is full of cylindrical shell (6), play equilibrium activity, particularly high-pressure medium; (10) be outlet, measured medium flows out thus, higher than cylindrical shell (6); (11) be upper recirculatory pipe, the air in cylindrical shell (6) overflows, simultaneously as the spilling path of cylindrical shell (6); (12) be lower recirculatory pipe; (13) be sewage draining exit (with Valve controlling); (14) be sampling thief flange, for packing density meter; (15) be bolt, (16) are nuts.
In figure (3), (5) are signal converters, (6) be stainless steel cylinder, (7) be induction pipe, (10) be outlet, (13) be sewage draining exit (with Valve controlling), (15) be bolt, (16) are nuts
In figure (4), (2) are conduits for upper bellows, (3), and (17) are isolation diaphragms, and (18) are pressure transducers, and (19) are wires, and (20) are temperature sensors.
In figure (5), (1) is lower bellows, and (3) are conduits, and (17) are isolation diaphragms, and (20) are temperature sensors, and (21) are the adapters being full of incompressible liquid.
First lower bellows (1) and upper bellows (2) is produced with stainless steel, after making, by pressure transducer (18) and wire (19) and be full of incompressible liquid adapter (21) and be installed in bellows one for high-temperature medium, afterwards isolation diaphragm (17) is arranged on bellows end face and is closed.Reprocessing conduit (3), temperature sensor (20) is installed on conduit (3) interior lower end and threading is closed again, keep at a certain distance away in the upper the same side of conduit (3) (as 500mm) perforate, lower bellows (1) and upper bellows (2) are enclosed within conduit (3) go up and fix, conduit (3) upper end is welded with mounting flange (4); Various lines in conduit (3) are drawn, is connected with signal converter (5) simultaneously, then fixed signal converter (5).The signal of temperature sensor (20) and pressure transducer (18), by wire (19), causes in signal converter (5) from conduit (3) inside.
When measuring static medium density, densitometric mounting flange (4) bolt (15) is connected with sampling thief flange (14) with nut (16), be installed on stainless steel cylinder (6), the bottom of cylindrical shell (6) interior medium and the pressure P 1 on top and P2 is measured respectively by lower bellows (1) and upper bellows (2), and by conduit (3), institute's measuring pressure is reached in converter (5), Δ P is calculated by converter (5), medium temperature simultaneously measured by Δ P=ρ × g × H and temperature sensor (20), compensation calculation goes out density p, thus the Density Detection completed medium.
When measuring flow media density, densitometric mounting flange (4) bolt (15) is connected with sampling thief flange (14) with nut (16), be installed on stainless steel cylinder (6), flow media is flow to after in lower inlet pipe (8) and upper inlet (9) by induction pipe (7), enter in stainless steel cylinder (6) again, to ensure that medium is full of stainless steel cylinder (6); By upper recirculatory pipe (11) and lower recirculatory pipe (12), medium is converged to outlet (10), medium is flowed out from stainless steel cylinder (6).The bottom of cylindrical shell (6) interior medium and the pressure P 1 on top and P2 is measured respectively by lower bellows (1) and upper bellows (2), and by conduit (3), institute's measuring pressure or pressure signal are reached in converter (5), Δ P is calculated by converter (5), medium temperature simultaneously measured by Δ P=ρ × g × H and temperature sensor (20), compensation calculation goes out density p, thus completes the Density Detection to medium.

Claims (8)

1. an intelligent densitometer, is made up of intelligent density transmitter and sampling thief; It is characterized in that described intelligent density transmitter comprises conduit, sensor, converter; Described conduit is exactly a stainless-steel tube, and positions different on described stainless-steel tube is embedded with two bellows, and two bellows are spacing structure, at the end mounting temperature sensor of described stainless-steel tube, at described stainless-steel tube upper end mounting converter; Described sensor is arranged in bellows or in converter, is connected with bellows; Described sampling thief is a cylindrical shell; Intelligence density transmitter adopts the mounting structure inserted in sampling thief.
2. a kind of intelligent densitometer as claimed in claim 1, is characterized in that two bellows on guide rod are spacing structures, and bellows is a flat right cylinder be made with stainless steel.
3. a kind of intelligent densitometer as claimed in claim 2, it is characterized in that a planar end surface of bellows is wear-resisting isolation diaphragm (17), its lap is stainless steel.
4. the one intelligence densitometer as described in claim 1 or 3, it is characterized in that the measured medium for being greater than 100 DEG C, sensor is positioned at converter; For the measured medium being less than 100 DEG C, sensor is positioned at bellows or converter.
5. a kind of intelligent densitometer as claimed in claim 1, is characterized in that sampling thief has blowdown interface (13).
6. a kind of intelligent densitometer as claimed in claim 1, is characterized in that the detection for static medium, and sampling thief has induction pipe (7), outlet (10), is by-pass structure.
7. a kind of intelligent densitometer as claimed in claim 1, is characterized in that the detection for dynamic media, and sampling thief has induction pipe (7), outlet (10), balance port (9), overflow vent (11).
8. a kind of intelligent densitometer as claimed in claim 7, is characterized in that the detection for dynamic media, and the outlet (10) of sampling thief is higher than the cylindrical shell (6) of sampling thief.
CN201420541975.0U 2014-09-15 2014-09-15 A kind of intelligent densitometer Expired - Fee Related CN204203030U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420541975.0U CN204203030U (en) 2014-09-15 2014-09-15 A kind of intelligent densitometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420541975.0U CN204203030U (en) 2014-09-15 2014-09-15 A kind of intelligent densitometer

Publications (1)

Publication Number Publication Date
CN204203030U true CN204203030U (en) 2015-03-11

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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106767936A (en) * 2017-02-09 2017-05-31 宣向斌 The concentration detection system and its detection method of a kind of use integration technology
CN107478542A (en) * 2017-08-22 2017-12-15 广东江威传感科技有限公司 One kind diffusion silicon density transmitter
CN112858096A (en) * 2021-01-29 2021-05-28 晨光生物科技集团股份有限公司 Differential pressure type densimeter measuring and protecting device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106767936A (en) * 2017-02-09 2017-05-31 宣向斌 The concentration detection system and its detection method of a kind of use integration technology
CN107478542A (en) * 2017-08-22 2017-12-15 广东江威传感科技有限公司 One kind diffusion silicon density transmitter
CN112858096A (en) * 2021-01-29 2021-05-28 晨光生物科技集团股份有限公司 Differential pressure type densimeter measuring and protecting device

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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: 20150311

Termination date: 20160915

CF01 Termination of patent right due to non-payment of annual fee