CN201561909U - Pressure-differential type density sensor and density measurement device comprising the same - Google Patents
Pressure-differential type density sensor and density measurement device comprising the same Download PDFInfo
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- CN201561909U CN201561909U CN2009201628972U CN200920162897U CN201561909U CN 201561909 U CN201561909 U CN 201561909U CN 2009201628972 U CN2009201628972 U CN 2009201628972U CN 200920162897 U CN200920162897 U CN 200920162897U CN 201561909 U CN201561909 U CN 201561909U
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Abstract
The utility model discloses a pressure-differential type density sensor, which comprises a cable, a plurality of pressure sensors connected on the cable in series and a weight arranged at the end of the cable. The utility model works out the pressure difference of two adjacent pressure sensors by measuring the pressure values of the two adjacent pressure sensors, wherein the distance between the two pressure sensors is constant, and then the density of current liquid can be worked out by utilizing a formula: P=rhogh. In the utility model, flexible connection is adopted, a stainless steel heavy bob is hung below the cable connected with the pressure sensors, and the pressure sensors are kept vertical by force of gravity, and thereby, the position can be automatically corrected; the change of the verticality of equipment can not be caused due to the deformation of an oil storage tank in the use process, and thereby, system errors caused by the inclination of the equipment are avoided.
Description
Technical field
The utility model relates to the density measurement technical field, relates in particular to a kind of differential density sensor and comprises the density measuring equipment of this sensor.
Background technology
In the oil density fields of measurement, density sensor is a kind of very important surveying instrument.Existing in the market density sensor has float type densimeter, elementary errors piezoelectricity flow pattern density sensor etc., and wherein, the float type densimeter complex structure needs the machining high-precision spring, and repeatability precision can not satisfy the storage tank oil density and measure needs; Elementary errors piezoelectricity flow pattern density sensor volume more very much not is adapted at installing in the storage tank, and it is output as simulating signal, needs analog to digital conversion, and the conversion accuracy error can influence final measuring accuracy.
In addition, the connection of existing density sensor is and is rigidly connected, and need guarantee during installation that system is vertical, otherwise measurement result has systematic error.May cause that the equipment installation site changes if storage tank in use is out of shape, cause equipment to be in non-perpendicular state, thereby cause the density sensor measurement systematic error to occur.
The utility model content
In view of this, the utility model purpose is to provide a kind of differential density sensor, by under density sensor, hanging the design that flexibly connects of stainless steel weight, guarantee that by gravity pressure transducer is in plumbness all the time, avoided the systematic error that tilts to cause because of pressure transducer in the design that is rigidly connected.
To achieve these goals, the utility model provides following technical scheme:
A kind of differential density sensor comprises:
Cable;
Be serially connected in a plurality of pressure transducers on the described cable;
Be arranged on the weight of described cable ends.
Preferably, described pressure transducer quantity is two.
Preferably, described weight is the stainless steel weight.
A kind of density measuring equipment is used to measure fluid density, comprises differential density sensor and liquid level instrument system, and described differential density sensor comprises:
Cable;
Be serially connected in a plurality of pressure transducers on the described cable;
Be arranged on the weight of described cable ends;
Described liquid level instrument system links to each other with the cable of described differential density sensor, is used to obtain the pressure signal that described pressure transducer is gathered, to calculate fluid density.
Preferably, described pressure transducer quantity is two.
Preferably, described weight is the stainless steel weight.
From technique scheme as can be seen, the utility model adopts and flexibly connects, below the cable that connects pressure transducer, hang the stainless steel weight, make pressure transducer keep vertical by gravity, can realize automatic correction position, can not change, thereby avoid the systematic error that causes because of device inclined because of storage tank in use is out of shape the verticality that causes equipment.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the density measuring equipment structural representation;
Fig. 3 is another example structure synoptic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model embodiment discloses a kind of differential density sensor, comprising: cable 1; Be serially connected in first pressure transducer 2 and second pressure transducer 3 on the described cable; Be arranged on the stainless steel weight 4 of described cable 1 end.
When using differential density sensor two uniform pressure sensor strings are connected on the cable, the distance between two pressure transducers is the user preset distance, helps the measurement to fluid density.Record data according to two pressure transducers and calculate its pressure differential, can calculate current density of liquid according to formula P=ρ gh.In the lower end of cable the stainless steel weight is set, utilizes gravity cable can be stretched, proofread and correct the cable position automatically, make cable keep vertical, avoided storage tank to cause the systematic error that pressure transducer tilts to cause because of deformation in use.
As shown in Figure 2, the utility model embodiment discloses a kind of density measuring equipment, is used to measure fluid density, comprises differential density sensor and liquid level instrument system 25, and described differential density sensor comprises: cable 21; Be serially connected in first pressure transducer 22 and second pressure transducer 23 on the described cable 21; Be arranged on the stainless steel weight 24 of described cable ends; Described liquid level instrument system 25 links to each other with the cable 21 of described differential density sensor, is used to obtain the pressure signal of described first pressure transducer 22 and 23 collections of second pressure transducer, to calculate fluid density.
When carrying out oil density surveyed, only need above-mentioned differential density sensor is put into the storage tank that needs measurement, pressure transducer can cause systematic error under situation about tilting, the utility model is hung with weight below the cable that connects pressure transducer, cable keeps under the effect of gravity vertically, thereby has guaranteed that pressure transducer is vertical.Pressure transducer in the described differential density sensor is transferred to liquid level instrument system with the digital pressure signal that records, and by importing the distance between two pressure transducers, is calculated according to formula by the daemon software of liquid level instrument system and to obtain density data.
As shown in Figure 3, another embodiment of the present utility model, first pressure transducer 32, second pressure transducer 33 and the 3rd pressure transducer 34 are connected in series by rope 31, make adjacent two predeterminable ranges that pressure transducer is maintained fixed, end at rope 31 is provided with weight 35, be used for rope 31 is stretched, make the pressure transducer on the rope 31 keep vertical; When liquid fluctuating, the pressure transducer on the rope 31 can tilt, and rope 31 can be got back to the vertical state that stretches automatically under the action of gravity of weight 35; First pressure transducer 32 links to each other with liquid level instrument system 37 by cable 36; Second pressure transducer 33 links to each other with liquid level instrument system 37 by cable 38; The 3rd pressure transducer 34 links to each other with liquid level instrument system 37 by cable 39, and will record digital pressure signal and be transferred to liquid level instrument system 37, calculates the acquisition density data by the daemon software of liquid level instrument system 37 according to formula.
In sum, the utility model adopts and flexibly connects design, a plurality of pressure transducers are set on cable or rope, under cable or rope, hang weight, because of the reason of gravity, cable or rope are remained vertically, thereby make the pressure transducer that is serially connected on the cable also be in plumbness, can not avoid the systematic error that causes because of device inclined because of the storage tank distortion causes the verticality of equipment to change.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. a differential density sensor is characterized in that, comprising:
Cable;
Be serially connected in a plurality of pressure transducers on the described cable;
Be arranged on the weight of described cable ends.
2. sensor as claimed in claim 1 is characterized in that, described pressure transducer quantity is two.
3. sensor as claimed in claim 1 is characterized in that, described weight is the stainless steel weight.
4. a density measuring equipment is used to measure fluid density, it is characterized in that, comprises differential density sensor and liquid level instrument system, and described differential density sensor comprises:
Cable;
Be serially connected in a plurality of pressure transducers on the described cable;
Be arranged on the weight of described cable ends;
Described liquid level instrument system links to each other with the described cable that is serially connected with differential density sensor, is used to obtain the pressure signal that described pressure transducer is gathered, to calculate fluid density.
5. density measuring equipment as claimed in claim 4 is characterized in that, described pressure transducer quantity is two.
6. density measuring equipment as claimed in claim 4 is characterized in that, described weight is the stainless steel weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201628972U CN201561909U (en) | 2009-09-07 | 2009-09-07 | Pressure-differential type density sensor and density measurement device comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201628972U CN201561909U (en) | 2009-09-07 | 2009-09-07 | Pressure-differential type density sensor and density measurement device comprising the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561909U true CN201561909U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201628972U Expired - Lifetime CN201561909U (en) | 2009-09-07 | 2009-09-07 | Pressure-differential type density sensor and density measurement device comprising the same |
Country Status (1)
| Country | Link |
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| CN (1) | CN201561909U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749123A (en) * | 2012-07-25 | 2012-10-24 | 成都中核鑫星应用技术研究所 | Radioactive waste resin interface measuring device based on lifting device and application method thereof |
| CN104142285A (en) * | 2014-07-29 | 2014-11-12 | 洛阳乾禾仪器有限公司 | Device for measuring parameters of crude oil inside oil storage tank |
| CN105403483A (en) * | 2015-12-29 | 2016-03-16 | 长沙学院 | Solution density differential pressure measurement apparatus and measurement method thereof |
| CN105865975A (en) * | 2016-06-15 | 2016-08-17 | 上海隧道工程有限公司 | Slurry proportion detection device and method for slurry shield |
| CN102435534B (en) * | 2011-12-22 | 2017-04-12 | 四川省科学城久利电子有限责任公司 | Underground fluid density measuring device |
| CN112765900A (en) * | 2021-02-03 | 2021-05-07 | 河北工业大学 | Alcohol content online detection method and system for segmented liquor picking |
-
2009
- 2009-09-07 CN CN2009201628972U patent/CN201561909U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435534B (en) * | 2011-12-22 | 2017-04-12 | 四川省科学城久利电子有限责任公司 | Underground fluid density measuring device |
| CN102749123A (en) * | 2012-07-25 | 2012-10-24 | 成都中核鑫星应用技术研究所 | Radioactive waste resin interface measuring device based on lifting device and application method thereof |
| CN104142285A (en) * | 2014-07-29 | 2014-11-12 | 洛阳乾禾仪器有限公司 | Device for measuring parameters of crude oil inside oil storage tank |
| CN105403483A (en) * | 2015-12-29 | 2016-03-16 | 长沙学院 | Solution density differential pressure measurement apparatus and measurement method thereof |
| CN105403483B (en) * | 2015-12-29 | 2018-07-31 | 长沙学院 | pressure difference solution density measuring device |
| CN105865975A (en) * | 2016-06-15 | 2016-08-17 | 上海隧道工程有限公司 | Slurry proportion detection device and method for slurry shield |
| CN112765900A (en) * | 2021-02-03 | 2021-05-07 | 河北工业大学 | Alcohol content online detection method and system for segmented liquor picking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |