CN2103796U - Weight measurer for demixed liquid in reserve tank - Google Patents
Weight measurer for demixed liquid in reserve tank Download PDFInfo
- Publication number
- CN2103796U CN2103796U CN 91230362 CN91230362U CN2103796U CN 2103796 U CN2103796 U CN 2103796U CN 91230362 CN91230362 CN 91230362 CN 91230362 U CN91230362 U CN 91230362U CN 2103796 U CN2103796 U CN 2103796U
- Authority
- CN
- China
- Prior art keywords
- liquid
- tank
- demixed
- weight
- storage tank
- 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.)
- Pending
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a weight measurer for demixed liquid in a reserve tank, which is characterized in that differential pressure transducers and density sampling openings are respectively arranged at the biggest range of the bottom of the storage tank and the bottom of the tank and at the interface of the demixed liquid in the tank and the bottom of the tank, so the weight of the demixed liquid in the storage tank can be measured. Since the concrete position of the interface of the demixed liquid is not needed to directly measure, the influences of measuring accuracy caused by the definition of the limiting surface, an emulsion layer, the variation of two liquid density differences are avoided, and the accuracy of the weight measurement of the demixed liquid in the tank is effectively increased.
Description
The utility model relates to a kind of improved liquid in storage tank weight self-measuring device, the particularly a kind of measuring apparatus that can accurately measure certain liquid weight in the stratified liquid.
Existing liquid in storage tank weight self-measuring device mainly contains differential pressure pick-up, the stratified liquid level meters, high liquid level sensor, and data processor form.Differential pressure pick-up is installed in the bottom of storage tank.Be used for measuring the general assembly (TW) of the liquid of storage tank.The stratified liquid level meters are installed on the corresponding tank wall in stratified liquid interface, be used to measure the distance of stratified liquid face and differential pressure pick-up, use for the weight of calculating this layer liquid, high liquid level sensor is installed in tank deck and is used for preventing the jar liquid spill, and data processor is used for gathering, calculating measurement data.In this device,, and be subjected to the influence that interface sharpness, emulsion layer and fluid density difference change because the accuracy of measurement of present stratified liquid level meters is low.Although the accuracy of differential pressure pick-up is higher, also can't improve the weight measurement accuracy of each layer liquid in the storage tank.
The purpose of this utility model is that a kind of improved liquid in storage tank self-measuring device will be provided, and it can measure the weight of each layer of stratified liquid exactly.
Task of the present utility model is achieved in that installs a differential pressure pick-up and a density thief hatch respectively in the bottom of every layer of liquid, because the sectional area of storage tank is a determined value, then the weight of every layer of liquid just can be tried to achieve the liquid pressure value, density value, the computing of process simple mathematical that record.
Below with reference to accompanying drawing the utility model is described in further detail.
With reference to accompanying drawing,, the pressure guiding pipe 3 that diameter is not less than φ 40mm is installed, by valve J in the bottom of storage tank
1, filtrator G
1With differential pressure pick-up Z
1H end be connected, on pressure guiding pipe 3, by valve J
3, a fluid density thief hatch C is installed
1By valve J
5, install one and demarcate a mouthful B
1Apart from a jar end height h place, the pressure guiding pipe 4 that diameter is not less than φ 40mm is installed, by valve J
2, filtrator G
2With differential pressure pick-up Z
2H end link to each other; On pressure guiding pipe 4, by valve J
4A fluid density thief hatch C is installed
2By valve J
6, install one and demarcate a mouthful B
2At the top of storage tank 1, the pressure guiding pipe 5 that diameter is not less than φ 40mm is installed; By valve J
6With two differential pressure pick-up Z
1, Z
2L end link to each other; In the bottom of pressure guiding pipe 5, by reservoir Q, valve J
7, a tap hole F is installed; Two differential pressure pick-up Z
1, Z
2Output valve deliver to data into electronic data processing.
In Figure of description, h is liquid surface 2 and the maximum changing range at jar end, h
1, h
2Be respectively the liquid surface 2 of layering and the distance between pressure guiding pipe 3 and the pressure guiding pipe 4, r
1, r
2Be respectively thief hatch C
1With thief hatch C
2The upper and lower layer density of liquid that records, P
1, P
2Be respectively two differential pressure pick-up (Z
1, Z
2) the output differential pressure value, the sectional area of establishing storage tank is S, so the weight of lower floor's liquid:
G
1＝（P
1－P
2－r
2h） (r
1s)/(r
1-r
2)
The weight of supernatant liquid:
G＝P
1S－G
1
The utility model is when measuring the weight of stratified liquid, because only need measure the pressure values and the density value of liquid, need not to measure the particular location at stratified liquid interface, so sharpness at stratified liquid interface, the variation of emulsion layer and two kinds of fluid density differences does not all have influence for weight measurement, thereby has improved the accuracy of measurement of stratified liquid gravimetric value in the storage tank greatly.Most preferred embodiment of the present utility model is:
The oil storage weight self-operated measuring unit of vertical metal tank.Vertical metal tank is right cylinder, and its capacity is generally at 500m
3To 10000m
3, respective diameters 6m to 28m, height 8m to 20m.The bottom of oil tank generally all has water assorted, and with the oil product layering, it is h that the assorted maximum height of water is no more than 30cm().The product that differential pressure pick-up can select for use Xian Instrument Factory to produce, model is 1151DP5E12E9; Or the product of news from Beijing Watch Factory, model is 1751DP5E12E9.The installation of pressure guiding pipe, newly-built oil tank can weld by direct opening on tank skin, and tank in use can weld in the clean-out cover upper shed, for guaranteeing oil storage safety, during welding, clean-out cover can be moved to the place of safety, pressure guiding pipe 3 is near installing at the bottom of the jar, and pressure guiding pipe 4 is being installed apart from jar ends 30 centimeters.Selecting for use of valve, valve J
3, J
4Generally select stainless steel ball valve, other optional common gate valve.Filtrator is generally selected 80 order plain filters for use.The density thief hatch be make "
" common steel tube of type.The latus rectum of pressure guiding pipe, valve, filtrator is φ 40mm.
Attached: stratified liquid weight computing formula derives process
With reference to accompanying drawing, G
1=r
1h
1S, G
2=r
2h
2S, h
2=h-h
1, G
1+ G
2=(P
1-P
2) S=r
1h
1S+r
2h
2S=r
1h
1S+r
2(h-h
1) s
h
1＝（P
1－P
2－r
2h） 1/(r
1-r
2)
G
1＝h
1r
1s＝（P
1－P
2－r
2h） (r
1s)/(r
1-r
2)
G＝P
1S－G
1
Claims (1)
1, a kind of storage tank stratified liquid Weight-measuring device is characterized in that in the bottom of storage tank a differential pressure pick-up Z being installed
1With a fluid density thief hatch C
1A differential pressure pick-up Z is installed at the interface of stratified liquid and the maximum changing range h place at jar end in storage tank
2With a fluid density thief hatch C
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91230362 CN2103796U (en) | 1991-10-21 | 1991-10-21 | Weight measurer for demixed liquid in reserve tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91230362 CN2103796U (en) | 1991-10-21 | 1991-10-21 | Weight measurer for demixed liquid in reserve tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2103796U true CN2103796U (en) | 1992-05-06 |
Family
ID=4935704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91230362 Pending CN2103796U (en) | 1991-10-21 | 1991-10-21 | Weight measurer for demixed liquid in reserve tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2103796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323536A (en) * | 2016-10-13 | 2017-01-11 | 北京神雾环境能源科技集团股份有限公司 | Staged pressure difference measuring method for high pressure closed container |
-
1991
- 1991-10-21 CN CN 91230362 patent/CN2103796U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323536A (en) * | 2016-10-13 | 2017-01-11 | 北京神雾环境能源科技集团股份有限公司 | Staged pressure difference measuring method for high pressure closed container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |