CN2150171Y - Automatic metering and level-monitoring device for petroleum storage tank - Google Patents
Automatic metering and level-monitoring device for petroleum storage tank Download PDFInfo
- Publication number
- CN2150171Y CN2150171Y CN 93209000 CN93209000U CN2150171Y CN 2150171 Y CN2150171 Y CN 2150171Y CN 93209000 CN93209000 CN 93209000 CN 93209000 U CN93209000 U CN 93209000U CN 2150171 Y CN2150171 Y CN 2150171Y
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- CN
- China
- Prior art keywords
- level
- automatic metering
- storage tank
- petroleum storage
- computer
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- 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
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Abstract
The utility model relates to an automatic metering and level-monitoring device for petroleum storage tanks used for automatic metering, monitoring, and control of the large-sized and medium-sized petroleum storage tank. The device is composed of an explosion-proof type high precision differential pressure transmitter, an electric current / voltage transformation board, a simulation / digital conversion board, a PC computer, and the external device of the PC computer. Therefore, the differential pressure signal of the petroleum product is converted to the standard current, standard voltage, and digital signal which are inputted into the computer in turn. Then, calculation, display, and printing are carried out according to the density and temperature of the petroleum product and national standard computation method. The bar graph on a display can display the oil level to realize the automatic metering and the oil level monitoring of the petroleum storage tank. The metering accuracy is 1/1000.
Description
The utility model is applicable to petrochemical enterprise and commercial oil depot.Can monitor automatically the level height of various oil tanks, and the algorithm of stipulating by GB GB85006 specification by level height calculates oil product reserves and transmitting-receiving amount.
At present, the storage tanker of the most of oil depots of China all adopts the manual metering method of " hand gauging ", this all can not satisfy the requirement of situation now on measuring accuracy, on the labour intensity, on the work efficiency and in the safety management, particularly because metering is inaccurate or cause " tank boil-overs " to cause enormous economic loss for country.Some large-scale oil depots adopts electronic scale monitoring, can directly measure the oil product reserves, is arranged on the high mountain or the oil tank reserves of tens of rice on overhead but can only measure, and puts into other jar again, and precision is between 3～5 ‰.200,000 yuan of this measurement mechanism costs, no monitoring function is so be difficult for applying.
The utility model provides a kind of oil metering and oil level monitoring device, and it can monitor various oil tank level height automatically, and provides oil product reserves and transmitting-receiving amount.
The purpose of this utility model is achieved in that by oil tank (1) draws two pressure guiding pipes (2) and (3), directly is connected with differential pressure transmitter (4), and the height of pressure guiding pipe (2) is h
O, level height is H, the static difference pressure in the oil tank (1) is directly proportional with the level height more than the tracting pressuring hole.Along with the variation of store oil amount, at h
0In～H the range ability, corresponding to the differential pressure scope is O～P, and differential pressure transmitter is based on the capacitive sensing principle, O～P, the differential pressure signal of scope becomes 4～20 milliamperes of normalized current signals that are directly proportional with it, and each numerical value of this current signal is all corresponding to certain level height and oil product reserves.Signal conversion unit (5) is normalized current/voltage transformation plate, and it is made up of precision resistor R and the cond C in parallel with it.Differential pressure transmitter (4) and signal conversion unit (5) cable connection become 4～20 milliamperes of normalized current signal transformations 1～5 volt normal voltage signal.Signal conversion unit (5) and signal conversion unit (6), promptly standard analog/digital conversion plate cable connection converts 1～5 volt normal voltage signal to 14 (or 12) cooresponding with it digital signals.Signal conversion unit and PC computing machine (7) cable connection; PC computing machine (7) output and telltale (8), chopping machine (10) cable connection; Keyboard (9) output and computing machine (7) cable connection.The PC computing machine is according to the digital signal that is directly proportional with oil level and oil density and the temperature keyed in by keyboard like this, by the method for calculating of GB GB85006 specification regulation with through the gage table of calibrating, calculates the reserves and the transmitting-receiving amount of oil product.Show metering process and metering result with telltale, file with printer prints.Simultaneously, telltale passes through rod figure and shows level height, and the predetermined operation bound, when oil level reaches or following prescribing a time limit, provides alerting signal, realizes the monitoring of oil level.
Owing to adopt such scheme, can monitor automatically the level height of various oil tanks, and provide oil product reserves and transmitting-receiving amount.Measuring accuracy can reach 1 ‰, can bring up to 0.5 ‰ after the machine maintenance just as calculated; Install each unit and all adopt the normalisation cordwood system, compact conformation, the reliability height is easily applied.
Claims (1)
1, a kind of oil metering and oil level monitoring device, PC computing machine (7) output and telltale (8) and chopping machine (10) cable connection, keyboard (9) output is connected with computer cable, it is characterized in that: oil tank (1) is drawn two pressure guiding pipes (2) and (3), directly be connected with differential pressure transmitter (4), differential pressure transmitter, signal conversion unit (5), signal conversion unit (6) and PC computing machine be cable connection successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209000 CN2150171Y (en) | 1993-04-14 | 1993-04-14 | Automatic metering and level-monitoring device for petroleum storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93209000 CN2150171Y (en) | 1993-04-14 | 1993-04-14 | Automatic metering and level-monitoring device for petroleum storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2150171Y true CN2150171Y (en) | 1993-12-22 |
Family
ID=33791309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93209000 Expired - Fee Related CN2150171Y (en) | 1993-04-14 | 1993-04-14 | Automatic metering and level-monitoring device for petroleum storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2150171Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118615A (en) * | 2015-09-30 | 2015-12-02 | 淄博夸克医药技术有限公司 | Automatic alarm transformer vacuum oil injection device allowing oil level to be monitored in real time |
-
1993
- 1993-04-14 CN CN 93209000 patent/CN2150171Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118615A (en) * | 2015-09-30 | 2015-12-02 | 淄博夸克医药技术有限公司 | Automatic alarm transformer vacuum oil injection device allowing oil level to be monitored in real time |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |