CN207364666U - A kind of frequency conversion and unvarying pressure control methanol loading apparatus - Google Patents
A kind of frequency conversion and unvarying pressure control methanol loading apparatus Download PDFInfo
- Publication number
- CN207364666U CN207364666U CN201721369552.5U CN201721369552U CN207364666U CN 207364666 U CN207364666 U CN 207364666U CN 201721369552 U CN201721369552 U CN 201721369552U CN 207364666 U CN207364666 U CN 207364666U
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- CN
- China
- Prior art keywords
- pump
- methanol
- frequency
- force
- forcing
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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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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Operation Control Of Excavators (AREA)
Abstract
A kind of frequency conversion and unvarying pressure control methanol loading apparatus,Including methanol tank,The methanol tank port of export is connected on force (forcing) pump by pipeline,Force (forcing) pump is controlled by frequency converter,The pressure size of force (forcing) pump is determined by the computing of PID devices,Methanol after pressurization is transported to methanol loading station by pipeline,Multiple entrucking crane positions have been arranged side by side in methanol loading station,When larger with the loading of freight waggon,When main pump running frequency is equal to upper limit setpoint frequency,And feedback pressure is less than setting pressure and when reaching certain time,When i.e. main pump operation cannot meet user's entrucking needs,Start stand-by pump,Make main pump by frequency setting upper limit operation,Stand-by pump is run in PID regulative modes down coversion,When smaller with the loading of freight waggon,Feedback pressure force value is equal to setting value,And when frequency converter operates in relatively low frequency and reaches certain time,Close stand-by pump,Main pump is set to be run in PID regulative modes down coversion,The utility model has the characteristics that stability and security.
Description
Technical field
Methanol entrucking technical field is the utility model is related to, more particularly to a kind of frequency conversion and unvarying pressure control methanol loading apparatus.
Background technology
Methanol loading station entrucking, need ensure methanol delivery main pressure stability in setting pressure, existing pressure control
Realize the stabilization of methanol delivery main's pressure for Field adjustment Loading Pump outlet valve, this regulative mode has very strong stagnant
Afterwards, it is uncontrollable, the generation of the dangerous accident such as equipment, personnel may be caused.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of frequency conversion and unvarying pressure control first
Alcohol loading apparatus, by manifold pressure control system, reaches the methanol loading system of automatic frequency-conversion Isobarically Control, has stability
And the characteristics of security.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of frequency conversion and unvarying pressure control methanol loading apparatus, including methanol tank 1, the port of export of the methanol tank 1 pass through pipeline
It is connected on force (forcing) pump, the force (forcing) pump is controlled by frequency converter, and the pressure size of force (forcing) pump is controlled by PID devices 6
System, the methanol after pressurization are transported to methanol loading station 10 by pipeline, and multiple entrucking crane positions have been arranged side by side in methanol loading station 10.
Two-way has been arranged in parallel on the pipeline of the methanol tank port of export, methanol outlet is respectively arranged with the pipeline of every road
Valve A2 and methanol outlet valve B3.
The force (forcing) pump is divided into main pump 8 and stand-by pump 9, can mutually be switched by middle control between main pump 8 and stand-by pump 9,
Main pump 8 passes through frequency converter A 4 and 5 frequency control of frequency converter B respectively with stand-by pump 9.
The manifold pressure control of crane position is provided with the pipeline between methanol and methanol loading station 10 after the pressurization
Device 7.
The beneficial effects of the utility model are：
The utility model uses variable frequency pump, it is possible to achieve and methanol delivery main's pressure automatically controls Loading Pump load, and then
Realize that force (forcing) pump outlet header's pressure is constant, the function of variable-flow methanol entrucking, reach the steady of methanol conveying entrucking manifold pressure
Qualitative, reliability.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
The structural principle to the utility model and operation principle make narration in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, realize that methanol delivery main's pressure automatically controls using frequency converter A 4 and frequency converter B 5 at the scene and add
Press pump load, force (forcing) pump are divided into main pump 8 and stand-by pump 9, and then realize that force (forcing) pump outlet header's pressure is constant, variable-flow methanol dress
The function of car.Echo signal (this target of manifold pressure signal after going 7 calculation process of crane position manifold pressure controller with setting
Value is determined according to the entrucking scene pressure value that the entrucking processed of manual modulation valve gate needed in the past) computing is compared, draw most
Good operating condition parameter, realizes entrucking force (forcing) pump according to manifold pressure frequency tune by the output module output signal of frequency conversion system
Section.System can automatically determine pressurization pump group circular flow according to the change of user's loading of freight waggon, to improve the conveying of the methanol of system
Stability, the reliability of manifold pressure.
The operation principle of the utility model：
The constant pressure loading system operational process of two force (forcing) pump main pumps 8 and stand-by pump 9, system under automatic running mode,
Technology controlling and process frequency converter starts main pump 8, and main pump 8 enters converting operation state at this time, its load passes through PID devices by manifold pressure
6 device computings determine that the pressure value and the difference of live value of feedback currently set determines.When larger with the loading of freight waggon, main pump 8 is transported
When line frequency is equal to upper limit setpoint frequency, and feedback pressure is less than setting pressure and (sets 30s) when reaching certain time, i.e.,
Main pump 8 is run when cannot meet user's entrucking needs, starts stand-by pump 9, makes main pump 8 by frequency setting upper limit operation, standby
Run with pump 9 in PID regulative modes down coversion.When smaller with the loading of freight waggon, feedback pressure force value is equal to setting value, and frequency converter
(reference settings 30S) when relatively low frequency (frequency detecting value is set as 10HZ) reaches certain time is operated in, closes stand-by pump
9, main pump 8 is run in PID regulative modes down coversion.
Claims (4)
1. a kind of frequency conversion and unvarying pressure control methanol loading apparatus, it is characterised in that including methanol tank (1), methanol tank (1) goes out
Mouth end is connected on force (forcing) pump by pipeline, and the force (forcing) pump is controlled by frequency converter, and the pressure size of force (forcing) pump is led to
PID devices (6) control is crossed, the methanol after pressurization is transported to methanol loading station (10) by pipeline, and methanol loading station (10) is side by side
It is provided with multiple entrucking crane positions.
A kind of 2. frequency conversion and unvarying pressure control methanol loading apparatus according to claim 1, it is characterised in that the methanol tank
Two-way has been arranged in parallel on the pipeline of the port of export, methanol outlet valve A (2) and methanol outlet valve B are respectively arranged with the pipeline of every road
(3)。
A kind of 3. frequency conversion and unvarying pressure control methanol loading apparatus according to claim 1, it is characterised in that the force (forcing) pump
Be divided into main pump (8) and stand-by pump (9), between main pump (8) and stand-by pump (9) can by it is middle control mutually switching, main pump (8) with it is spare
Pump (9) passes through frequency converter A (4) and frequency converter B (5) frequency control respectively.
4. a kind of frequency conversion and unvarying pressure control methanol loading apparatus according to claim 1, it is characterised in that after the pressurization
Methanol and methanol loading station (10) between pipeline on be provided with crane position manifold pressure controller (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721369552.5U CN207364666U (en) | 2017-10-23 | 2017-10-23 | A kind of frequency conversion and unvarying pressure control methanol loading apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721369552.5U CN207364666U (en) | 2017-10-23 | 2017-10-23 | A kind of frequency conversion and unvarying pressure control methanol loading apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207364666U true CN207364666U (en) | 2018-05-15 |
Family
ID=62421104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721369552.5U Expired - Fee Related CN207364666U (en) | 2017-10-23 | 2017-10-23 | A kind of frequency conversion and unvarying pressure control methanol loading apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207364666U (en) |
-
2017
- 2017-10-23 CN CN201721369552.5U patent/CN207364666U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 |