CN1339394A - Method for controlling vacuum degree of unloaded truck and ship - Google Patents
Method for controlling vacuum degree of unloaded truck and ship Download PDFInfo
- Publication number
- CN1339394A CN1339394A CN 00113636 CN00113636A CN1339394A CN 1339394 A CN1339394 A CN 1339394A CN 00113636 CN00113636 CN 00113636 CN 00113636 A CN00113636 A CN 00113636A CN 1339394 A CN1339394 A CN 1339394A
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- CN
- China
- Prior art keywords
- vacuum
- ship
- unloaded truck
- tank
- vacuum degree
- 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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The control method features that the vacuum tank and liquid level control system in the vacuum system of unloaded truck and ship is eliminated while one vacuum sucking pipe is connected between the intake pipeline and the outlet pipeline of original tank. Present invention makes it possible to save the investment is setting vacuum tank and eliminate the relevant failure while maintaining stable the vacuum degree of the unloaded truck and ship.
Description
The present invention relates to a kind of method of controlling vacuum degree of unloaded truck and ship.
During the petrochemical complex car and boat are unloaded process at present, vacuumize, will unload gas process vacuum tank discharge in the car and boat materail tube line, realize unloading car and boat pump pump priming by vacuum pump.The problem that exists is that the vacuum tank liquid level must strictly be controlled, otherwise vacuum tank material tank boil-overs very easily takes place, and brings vacuum pump into, causes vacuum pump to damage.The vacuum system valve opening and closing requires control rapidly, and operating sequence is very numerous and diverse, and must invest the vacuum that a constant volume is set, otherwise can't realize vacuumizing.
The object of the present invention is to provide a kind of method of controlling vacuum degree of unloaded truck and ship.
The present invention is provided with the vacuum suction pipe after being achieved in that the existing vacuum tank and fluid level control system that unloads in the car and boat vacuum system of cancellation, and an end links to each other with former vacuum tank inlet line, and the other end links to each other with the vacuum tank discharge pipe.
Good effect of the present invention is, does not need to be provided with vacuum tank, has eliminated vacuum tank material tank boil-overs and vacuum pump and has damaged, and does not need strict control and the frequent valve that opens and closes vacuum system, and is easy and simple to handle.The while vacuum degree of unloaded truck and ship can be kept stable, has remedied the vacuum leak that unloads car and boat pipeline junction, searches the very problem of difficulty when having solved vacuum leak, thereby has accelerated to unload the ship's speed degree, has reduced the expense of renting, overstocking car and boat.
Embodiment 1.
With existing nitric acid unload vacuum tank and fluid level control system cancellation in the vacuum system, be provided with DN80, highly be 7.5M, be
Shape, the vacuum suction pipe that makes progress, an end links to each other with former vacuum tank inlet line, and the other end links to each other with the vacuum tank discharge pipe.Nitric acid is unloaded in the process, vacuumizes by vacuum pump, with the nitric acid gas process in the material pipeline of unloading
Shape vacuum suction pipe is discharged, and enters aspirate tube though nitric acid is carried secretly by gas, and aspirate tube has enough height, so can not enter vacuum pump.
Embodiment 2.
With existing benzene unload a ship vacuum tank and fluid level control system cancellation in the vacuum system, be provided with DN100, highly be 10M, the vacuum suction pipe that is " ∏ " shape, makes progress, an end links to each other with former vacuum tank inlet line, the other end links to each other with the vacuum tank discharge pipe.The benzene ship is unloaded in the process, vacuumizes by vacuum pump, and the benzene gas of unloading a ship in the material pipeline is discharged through " ∏ " shape vacuum suction pipe, enters aspirate tube though benzene is carried secretly by gas, and aspirate tube has enough height, so can not enter vacuum pump.
Claims (2)
1, a kind of method of controlling vacuum degree of unloaded truck and ship, it is characterized in that: behind the existing vacuum tank and fluid level control system that unloads in the car and boat vacuum system of cancellation, vacuum suction pipe upwards is set, and an end links to each other with former vacuum tank inlet line, and the other end links to each other with the vacuum tank discharge pipe.
2, a kind of method of controlling vacuum degree of unloaded truck and ship according to claim 1 is characterized in that: the vacuum suction pipe that makes progress is " polygon of few bottom surface ", highly is 5-20M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113636 CN1339394A (en) | 2000-08-23 | 2000-08-23 | Method for controlling vacuum degree of unloaded truck and ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113636 CN1339394A (en) | 2000-08-23 | 2000-08-23 | Method for controlling vacuum degree of unloaded truck and ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1339394A true CN1339394A (en) | 2002-03-13 |
Family
ID=4583402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00113636 Pending CN1339394A (en) | 2000-08-23 | 2000-08-23 | Method for controlling vacuum degree of unloaded truck and ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1339394A (en) |
-
2000
- 2000-08-23 CN CN 00113636 patent/CN1339394A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |