CN207002245U - A kind of unloading system of volatile light oil - Google Patents
A kind of unloading system of volatile light oil Download PDFInfo
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- CN207002245U CN207002245U CN201720621354.7U CN201720621354U CN207002245U CN 207002245 U CN207002245 U CN 207002245U CN 201720621354 U CN201720621354 U CN 201720621354U CN 207002245 U CN207002245 U CN 207002245U
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Abstract
A kind of unloading system of volatile light oil, volatile light oil are unloaded technical field.It is characterized in that：Including oil filling riser（7）With oil filling riser（7）The oil-immersed pump of liquid feeding end connection（2）And and oil filling riser（7）The delivery pump of outlet end connection（4）, oil filling riser（7）With delivery pump（4）Between be provided with surge tank（3）, delivery pump（4）Liquid feeding end and surge tank（3）Bottom connection；Also include vacuum tank（5）, vacuum tank（5）Liquid feeding end and surge tank（3）Top connects, vacuum tank（5）Bottom also with delivery pump（4）Liquid feeding end connects.The generation of vapour lock and delivery pump vaccuum phenomenon when the unloading system of this volatile light oil avoids the amount of unloading deficiency, effectively overcome difficulty of being unloaded caused by vapour lock and conveying pump depletion, unloading outside vehicle speed for production requirement is ensure that, has obvious advantage in the security for improving operation of unloading, energy-saving and reduction manipulation strength etc..
Description
Technical field
A kind of unloading system of volatile light oil, volatile light oil are unloaded technical field.
Background technology
At present, railway tank car transport is still one of main path of China's light-end products transport, during actually unloading,
Because of the influence of the factors such as landform, technique, temperature, atmospheric pressure, the generation of vapour lock or vaccuum phenomenon can be caused, its consequence is when unloading
Between extend and influence production, oil product volatilizing loss increase, severe patient can not normally unload, and evacuation can also cause centrifugal pump and magnetic drive pump
Damage.
The content of the invention
The technical problems to be solved in the utility model is：Overcome the deficiencies in the prior art, there is provided it is a kind of effectively overcome because
Unloaded caused by vapour lock and conveying pump depletion the unloading of the volatile light oil for unloading vehicle speed that is difficult, ensure that production requirement
System.
Technical scheme is used by the utility model solves its technical problem：Unloading for the volatile light oil be
System, it is characterised in that：The oil-immersed pump connected including oil filling riser, with oil filling riser liquid feeding end and the delivery pump connected with oil filling riser outlet end,
Oil-immersed pump is placed in train tank car, and surge tank, the liquid feeding end of delivery pump and the bottom of surge tank are provided between oil filling riser and delivery pump
Portion connects；
Also include vacuum tank, the liquid feeding end of vacuum tank, which is connected with, takes out base oil flexible pipe, and the liquid feeding end and surge tank of vacuum tank
Top connects, and the bottom of vacuum tank also connects with delivery pump liquid feeding end, and between vacuum tank and surge tank and vacuum tank is with taking out bottom
Valve is equipped between oily flexible pipe, valve is also equipped between vacuum tank and surge tank and delivery pump；
Surge tank liquid level detection unit is provided with surge tank, vacuum tank liquid level detection unit, surge tank are provided with vacuum tank
Liquid level detection unit and vacuum tank liquid level detection unit are all connected with control module, and control module is connected with delivery pump and oil-immersed pump,
Liquid level in surge tank is more than or equal to 500mm.
Preferably, described delivery pump includes main centrifugal pump and secondary centrifugal pump, and main centrifugal pump and secondary centrifugal pump are arranged in parallel,
Control module is connected with main centrifugal pump and secondary centrifugal pump simultaneously, makes surge tank and vacuum tank inner height stable.
Preferably, the outlet end of described delivery pump is connected with outlet solenoid valve, and outlet solenoid valve is connected with control module.
Preferably, described main centrifugal pump is connected with frequency converter, and secondary centrifugal pump is connected with soft initiator, frequency converter and control
The signal output part of module is connected, and the signal input part of soft initiator is connected with the signal output part of frequency converter.
Preferably, the motor connection of described oil-immersed pump has current controller, and current controller is connected with control module.
Preferably, described train tank car is connected with static earthing alarm, static earthing alarm and control module phase
Even.
Preferably, described surge tank liquid level detection unit is surge tank liquid level gauge, and vacuum tank liquid level detection unit is true
The signal input part phase of slack tank high level alarm, surge tank liquid level gauge and vacuum tank high level alarm with control module
Even.
Preferably, it is connected with vavuum pump at the top of described vacuum tank.
Preferably, described control module includes PLC, interchanger and control system active station, PLC
It is connected with interchanger, interchanger is connected with control system active station.
Compared with prior art, beneficial effect possessed by the utility model is：
1st, the surge tank top of the unloading system of this volatile light oil connects with vacuum tank, logical first during unloading
Cross oil-immersed pump and delivery pump unloaded, unload close on terminate drawing fires recessing in-car raffinate when, raffinate is taken out by vacuum tank
Go out, avoid latent oil pump depletion, the generation of vapour lock and delivery pump vaccuum phenomenon during so as to avoid the amount of unloading deficiency, effectively gram
Take and unloaded difficulty caused by vapour lock and conveying pump depletion, ensure that unloading outside vehicle speed for production requirement, unloaded behaviour in improvement
The security of work, energy-saving and reduction manipulation strength etc. have obvious advantage；Liquid level in surge tank is more than
Equal to 500mm, so as to better assure that delivery pump smoothly works.
2nd, delivery pump includes main centrifugal pump and secondary centrifugal pump, and secondary centrifugal pump is used to aid in main centrifugal pump to extract surge tank or true
Light oil in slack tank, so that maintaining stable liquid level in surge tank and vacuum tank.
3rd, the liquid level of surge tank is controlled using converter technique, effectively prevent surge tank evacuation, also ensure that master
The safety of centrifugal pump and secondary centrifugal pump.
4th, the duration of runs for making oil-immersed pump by current controller is optimized, and is effectively improved because oil-immersed pump dallies
The problem of causing axle temperature to raise, improve the safety coefficient that light oil is unloaded.
5th, the effect of static earthing alarm be detection and eliminate electrostatic, it is achieved thereby that to electrostatic grounding accommodate it is bad or
Oil filling riser vibrations cause imperfect earth situation effectively to be detected, and carry out sound and light alarm, are unloaded to safety and provide guarantee.
6th, surge tank liquid level gauge can monitor the liquid level in surge tank in real time, so that maintaining stable liquid in surge tank
Position, vacuum tank high level alarm can avoid liquid level in vacuum tank too high, so as to cause loss of material and atmosphere pollution, so as to
It ensure that the safety of whole process of unloading.
Brief description of the drawings
Fig. 1 is the structural representation of the unloading system of the light oil of volatilization.
Fig. 2 is the control system figure of the unloading system of the light oil of volatilization.
In figure：1st, train tank car 2, oil-immersed pump 3, surge tank 4, delivery pump 5, vacuum tank 6, take out base oil flexible pipe
7th, oil filling riser.
Embodiment
Fig. 1 ~ 2 are most preferred embodiments of the present utility model, and 1 ~ 2 pair of the utility model is done furtherly below in conjunction with the accompanying drawings
It is bright.
A kind of unloading system of volatile light oil, including oil filling riser 7, the oil-immersed pump 2 that is connected with the liquid feeding end of oil filling riser 7 and
The delivery pump 4 connected with the outlet end of oil filling riser 7, oil-immersed pump 2 are placed in train tank car 1, are provided between oil filling riser 7 and delivery pump 4 slow
Tank 3 is rushed, the liquid feeding end of delivery pump 4 connects with the bottom of surge tank 3；Also include vacuum tank 5, the liquid feeding end of vacuum tank 5 is connected with
Take out base oil flexible pipe 6, and the liquid feeding end of vacuum tank 5 connects with the top of surge tank 3, the bottom of vacuum tank 5 also with the liquid feeding end of delivery pump 4
Connection, between vacuum tank 5 and surge tank 3 and vacuum tank 5 and take out valve is equipped between base oil flexible pipe 6, vacuum tank 5 and buffering
Valve is also equipped between tank 3 and delivery pump 4；Surge tank liquid level detection unit is provided with surge tank 3, is provided with vacuum tank 5 true
Slack tank liquid level detection unit, surge tank liquid level detection unit and vacuum tank liquid level detection unit are all connected with control module, control mould
Block is connected with delivery pump 4 and oil-immersed pump 2, and the liquid level in surge tank 3 is more than or equal to 500mm.This volatile light oil
The top of surge tank 3 of unloading system connects with vacuum tank 5, is unloaded first by oil-immersed pump 2 and delivery pump 4 during unloading
Car, unload close on end and take out raffinate in train tank car 1 when, raffinate is extracted out by vacuum tank 5, oil-immersed pump 2 is avoided and evacuates,
The generation of vapour lock and the vaccuum phenomenon of delivery pump 4, is effectively overcomed because of vapour lock and delivery pump 4 during so as to avoid the amount of unloading deficiency
Unloaded caused by evacuation difficulty, ensure that unloading outside vehicle speed for production requirement, improving the security, energy-saving for operation of unloading
There is obvious advantage with manipulation strength etc. is reduced；Liquid level in surge tank 3 is more than or equal to 500mm, so as to more preferable
Ground ensure that delivery pump 4 smoothly works.
Embodiment 1
As shown in Figure 1：When carrying out oil pumping operation, oil-immersed pump 2 is placed on the bottom of train tank car 1.The liquid feeding end of oil filling riser 7
Connected with the liquid feeding end of oil-immersed pump 2, the outlet end of oil filling riser 7 connects with the bottom of surge tank 3, and the liquid feeding end of delivery pump 4 is also with delaying
Rush the bottom connection of tank 3.The top of vacuum tank 5 connects with taking out the outlet end of base oil flexible pipe 6, and vacuum tank 5 is with taking out base oil flexible pipe 6
Between be provided with valve, the top of the top of vacuum tank 5 also with surge tank 3 is connected, and valve is provided between vacuum tank 5 and surge tank 3
Door, two valves are magnetic valve, and magnetic valve is connected with control module.The top of vacuum tank 5 is also associated with vavuum pump, so as to
Make to maintain stable negative pressure state in vacuum tank 5.
Delivery pump 4 includes main centrifugal pump and secondary centrifugal pump, the liquid feeding end of main centrifugal pump and secondary centrifugal pump simultaneously with vacuum tank 5
Connected with the bottom of surge tank 3, the outlet end of main centrifugal pump is connected with main pump outlet magnetic valve, and the outlet of secondary centrifugal pump is connected with
Sub-outlet magnetic valve, main centrifugal pump, secondary centrifugal pump, main pump outlet magnetic valve and auxiliary pump outlet solenoid valve with control module phase
Even.
Main centrifugal pump is connected with frequency converter, and secondary centrifugal pump is connected with soft initiator, and the signal of frequency converter and control module is defeated
Go out end to be connected, the signal input part of soft initiator is connected with the signal output part of frequency converter.
Surge tank liquid level detection unit is surge tank liquid level gauge, and vacuum tank liquid level detection unit is vacuum tank high liquid level warning
Device, surge tank liquid level gauge and vacuum tank high level alarm are connected with the signal input part of control module；Train tank car 1 connects
There is static earthing alarm, static earthing alarm is connected with control module；The motor connection of oil-immersed pump 2 has current controller,
Current controller is connected with control module.
As shown in Figure 2：Control module includes PLC, interchanger and control system active station, PLC with
Interchanger is connected, and interchanger is connected with control system active station, and control system active station can be computer.
Vacuum tank liquid level alarm and surge tank liquid level gauge are connected with the signal input part of PLC, vacuum tank liquid
Level alarm is used to detect the liquid level in vacuum tank 5, so as to avoid the liquid level in vacuum tank 5 too high, avoids liquid level in vacuum tank 5
It is too high, so as to cause loss of material and atmosphere pollution, so as to ensure that the safety of whole process of unloading.Surge tank liquid level gauge can
The liquid level of monitoring surge tank 3 in real time, so as to ensure to maintain stable liquid level in surge tank 3.
PLC is also associated with Intelligent communication controller, Intelligent communication controller simultaneously with current controller and electrostatic
Ground alarm is connected.The effect of static earthing alarm is detection and eliminates electrostatic, it is achieved thereby that being accommodated to electrostatic grounding
The vibrations of bad or oil filling riser cause imperfect earth situation effectively to be detected, and carry out sound and light alarm, unload and provide to safety
Ensure, the duration of runs for making oil-immersed pump by current controller is optimized, and is effectively improved because oil-immersed pump idle running causes
The problem of axle temperature raises, improves the safety coefficient that light oil is unloaded.
PLC and Intelligent communication controller are connected with frequency converter simultaneously, a signal output part of frequency converter and master
Centrifugal pump is connected, and another signal output part is connected with soft initiator, and the signal output part of soft initiator is connected with secondary centrifugal pump.
PLC is also connected with main pump outlet magnetic valve and auxiliary pump outlet solenoid valve.
PLC carries out the collection and output of switching value to lower floor, and equipment is communicated, provides control parameter；It is right
Upper strata is communicated with control system active station, is responsible for the collection of data and the remote setting of parameter.
Frequency converter is controlled according to surge tank liquid level, controls the operating of centrifugal pump, while be responsible for the operation of soft initiator.
During unloading, using the liquid level of surge tank 3 as control condition, the output of frequency converter is controlled, adjusts the operating speed of main centrifugal pump
Degree.First have to set the liquid level of surge tank 3, when the liquid level of surge tank 3 is higher than setting value, frequency converter output increase, main centrifugation
Pump fast turn-around increases discharge capacity, if liquid level progressively declines, frequency converter output also progressively declines, until the disengaging of intermediate buffer tank
Amount balance, liquid level are maintained at setting value.If frequency converter runs to power frequency 50Hz, the liquid level of surge tank 3 remains at setting
More than value, after 2min is operated, frequency converter, which is sent, opens soft initiator order, and soft initiator output control pair centrifugal pump starts
Power frequency operates, and at the same time frequency converter reduces output, again according to liquid level change adjustment itself output, if frequency converter is operating
After a period of time, lasting reduction is exported, when dropping to certain frequency, the order for stopping soft initiator is sent, stops soft initiator
Output, while itself start to be adjusted according to the change of liquid level again and export.
The unloading system of this volatile light oil is extracted in train tank car 1 by oil-immersed pump 2 first when being unloaded
Light oil, now delivery pump 4 connects with surge tank 3, and delivery pump 4 and vacuum tank 5 is separated；When extracting base oil, lead to
Cross and take out base oil flexible pipe 6 and extract, now delivery pump 4 is disconnected with vacuum tank 5, and vavuum pump is opened, and vacuum tank 5 keeps negative pressure, so as to logical
Vacuum tank 5 is crossed to extract the base oil of train tank car 1.
Embodiment 2
The difference of embodiment 2 and embodiment 1 is：Buffering tank valve is set between surge tank 3 and delivery pump 4, true
Vacuum tank valve is set between slack tank 5 and delivery pump 4, and vacuum tank valve is gentle to rush tank valve and be connected with PLC.Work as fire
During lightweight Chuck Steak in recessing car 1, and the liquid level in vacuum tank 5 is motionless, when the liquid level of surge tank 3 improves, buffers tank valve
Open, vavuum pump valve is closed, and delivery pump 4 extracts the light oil of surge tank 3 and delivered in oil storage tank；Liquid in surge tank 3
Position is motionless, and when liquid level in vacuum tank 5 improves, buffers canister closure valve, vacuum tank valve is opened, and delivery pump 4 extracts vacuum
Light oil in tank 5；When the liquid level in surge tank 3 and vacuum tank 5 remains stationary as, buffer tank valve and vacuum tank valve is equal
Close, so that maintaining stable liquid level in surge tank 3 and vacuum tank 5, moreover it is possible to avoid liquid level in surge tank 3 too low, while energy
Enough avoid the liquid level of vacuum tank 5 too high.
It is described above, only it is preferred embodiment of the present utility model, is not that other forms are made to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of change.But it is every without departing from the content of the technical scheme of the utility model, it is real according to technology of the present utility model
Any simple modification, equivalent variations and the remodeling that confrontation above example is made, still fall within the guarantor of technical solutions of the utility model
Protect scope.
Claims (9)
- A kind of 1. unloading system of volatile light oil, it is characterised in that：Including oil filling riser（7）With oil filling riser（7）Liquid feeding end connects Oil-immersed pump（2）And and oil filling riser（7）The delivery pump of outlet end connection（4）, oil-immersed pump（2）It is placed on train tank car（1）It is interior, crane Pipe（7）With delivery pump（4）Between be provided with surge tank（3）, delivery pump（4）Liquid feeding end and surge tank（3）Bottom connection；Also include vacuum tank（5）, vacuum tank（5）Liquid feeding end be connected with and take out base oil flexible pipe（6）, and vacuum tank（5）Liquid feeding end With surge tank（3）Top connects, vacuum tank（5）Bottom also with delivery pump（4）Liquid feeding end connects, vacuum tank（5）With surge tank （3）Between and vacuum tank（5）With taking out base oil flexible pipe（6）Between be equipped with valve, vacuum tank（5）And surge tank（3）With conveying Pump（4）Between be also equipped with valve；Surge tank（3）It is interior to be provided with surge tank liquid level detection unit, vacuum tank（5）It is interior to be provided with vacuum tank liquid level detection unit, buffering Tank liquid level detection unit and vacuum tank liquid level detection unit are all connected with control module, control module and delivery pump（4）And oil-immersed pump （2）It is connected, surge tank（3）Interior liquid level is more than or equal to 500mm.
- 2. the unloading system of volatile light oil according to claim 1, it is characterised in that：Described delivery pump（4） Including main centrifugal pump and secondary centrifugal pump, main centrifugal pump and secondary centrifugal pump are arranged in parallel, control module simultaneously with main centrifugal pump and pair Centrifugal pump is connected, and makes surge tank（3）And vacuum tank（5）Inner height is stable.
- 3. the unloading system of volatile light oil according to claim 1 or 2, it is characterised in that：Described delivery pump （4）Outlet end be connected with outlet solenoid valve, outlet solenoid valve is connected with control module.
- 4. the unloading system of volatile light oil according to claim 2, it is characterised in that：Described main centrifugal pump connects Frequency converter is connected to, secondary centrifugal pump is connected with soft initiator, and frequency converter is connected with the signal output part of control module, soft initiator Signal input part is connected with the signal output part of frequency converter.
- 5. the unloading system of volatile light oil according to claim 1, it is characterised in that：Described oil-immersed pump（2） Motor connection have current controller, current controller is connected with control module.
- 6. the unloading system of volatile light oil according to claim 1, it is characterised in that：Described train tank car （1）Static earthing alarm is connected with, static earthing alarm is connected with control module.
- 7. the unloading system of volatile light oil according to claim 1, it is characterised in that：Described surge tank liquid level Detection unit is surge tank liquid level gauge, and vacuum tank liquid level detection unit is vacuum tank high level alarm, surge tank liquid level gauge and Vacuum tank high level alarm is connected with the signal input part of control module.
- 8. the unloading system of volatile light oil according to claim 1, it is characterised in that：Described vacuum tank（5） Top be connected with vavuum pump.
- 9. the unloading system of volatile light oil according to claim 1, it is characterised in that：Described control module bag Include PLC, interchanger and control system active station, PLC with interchanger to be connected, interchanger is grasped with control system Make station to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621354.7U CN207002245U (en) | 2017-05-31 | 2017-05-31 | A kind of unloading system of volatile light oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720621354.7U CN207002245U (en) | 2017-05-31 | 2017-05-31 | A kind of unloading system of volatile light oil |
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| Publication Number | Publication Date |
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| CN207002245U true CN207002245U (en) | 2018-02-13 |
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| CN201720621354.7U Active CN207002245U (en) | 2017-05-31 | 2017-05-31 | A kind of unloading system of volatile light oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604816A (en) * | 2020-12-08 | 2022-06-10 | 中国石油天然气集团有限公司 | Oil product unloading system |
-
2017
- 2017-05-31 CN CN201720621354.7U patent/CN207002245U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604816A (en) * | 2020-12-08 | 2022-06-10 | 中国石油天然气集团有限公司 | Oil product unloading system |
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