CN206440319U - A kind of accurate measurement and control system of pulsed flow - Google Patents
A kind of accurate measurement and control system of pulsed flow Download PDFInfo
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- CN206440319U CN206440319U CN201720024684.8U CN201720024684U CN206440319U CN 206440319 U CN206440319 U CN 206440319U CN 201720024684 U CN201720024684 U CN 201720024684U CN 206440319 U CN206440319 U CN 206440319U
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Abstract
The utility model provides a kind of accurate measurement and control system of pulsed flow, is related to pulsed flow measurement technology field, and system includes calculation control module, storage agent tank, pulsed measuring pump and a measurement bypass；The outlet of the storage agent tank is connected with the entrance of the pulsed measuring pump by the first connecting line and the second connecting line being set up in parallel；The first valve is provided with first connecting line；Measurement bypass inlet control device and measurement bypass outlet valve are provided with second connecting line；The measurement bypass is arranged between the measurement bypass inlet control device and measurement bypass outlet valve；The measurement bypass includes a weighing measurement module；The weighing measurement module includes a gravimetric tank；The calculation control module is connected with first valve, measurement bypass inlet control device, measurement bypass outlet valve, weighing measurement module respectively, and connects the pulsed measuring pump by a frequency converter or stroke control mechanism control.
Description
Technical field
The utility model is related to pulsed flow measurement technology field, more particularly to a kind of pulsed flow accurately measurement with
Control system.
Background technology
Currently, in commercial Application, needed such as tap water purifying factory, power plant, sewage treatment plant, petrochemical plant into
Row adding medicine technique, such as adding assistant, catalyst.In adding medicine technique, in order to meet the control to institute's adding medicine, typically need
To be controlled by pulsed measuring pump, the flow morphology of pulsed measuring pump conveying is pulsed flow.
The measurement of current pulsed flow and control program be usually common flow meters after filtering average treatment or
Directly measured and controlled by the stroke of pulsed, its measurement accuracy is low, error is big；Or it is straight by electronic scale or common platform balance
Weighing storage tank is connect, measuring the gross weight started and the amount of fluid being measured by way of remaining gross weight, multiple storage tanks are needed more
Change and use, storage tank is changed frequently, it is necessary to stop the operation of measuring pump, it is impossible to ensure continuously proportional control, and measurement storage tank
Required range is big, and scale division value is big, it is impossible to measure the less flow of instantaneous numerical value.
Utility model content
Embodiment of the present utility model provides a kind of accurate measurement and control system of pulsed flow, to solve currently to pass through
Electronic scale or the direct weighing storage tank of common platform balance, measuring the gross weight started and measuring fluid by way of remaining gross weight
Amount, needs multiple storage tanks to change and uses, storage tank is changed frequently, it is necessary to stop the operation of measuring pump, it is impossible to ensure continuous ratio
Range needed for control, and measurement storage tank is big, and scale division value is big, it is impossible to the problem of measuring instantaneous numerical value less flow.
To reach above-mentioned purpose, the utility model is adopted the following technical scheme that：
A kind of accurate measurement and control system of pulsed flow, including calculation control module, storage agent tank, pulsed measuring pump
And one measurement bypass；The stroke control mechanism of frequency converter or remote control of the pulsed measuring pump equipped with regulation rotating speed；
The outlet of the storage agent tank is connected with the entrance of the pulsed measuring pump by the first connecting line being set up in parallel and second
Pipeline is connected；The first valve is provided with first connecting line；Be provided with second connecting line measurement bypass into
Mouth control device and measurement bypass outlet valve；The measurement bypass is arranged at the measurement bypass inlet control device and measurement
Between bypass outlet valve；The measurement bypass includes a weighing measurement module；The weighing measurement module includes a gravimetric tank；
The calculation control module respectively with first valve, measurement bypass inlet control device, measurement bypass outlet valve, weigh
Measurement module is connected, and connects the pulsed measuring pump by a frequency converter or stroke control mechanism control.
Further, the weighing measurement module, in addition to weighing sensor, upper connection metal hose, lower connection metal
Flexible pipe；The weighing sensor is connected with the gravimetric tank, for sensing the liquid medium weight in gravimetric tank；The upper connection
The upper end entrance of gravimetric tank described in connection by metal hose, and be connected with the measurement bypass inlet control device；The lower connection
The lower end outlet of gravimetric tank described in connection by metal hose, and be connected with the measurement bypass outlet valve；It is described to calculate control mould
Block is connected with the weighing sensor.
Herein, the horizontal level of the weighing measurement module is higher than the horizontal level of the storage agent tank；The measurement bypass
Access control device is the pipeline pump for being capable of remote control start and stop.
Or, the horizontal level of the weighing measurement module is less than the horizontal level of the storage agent tank；The measurement bypass
Access control device is to be capable of the second valve that remote control is opened and closed.
A kind of accurate measurement and control system of pulsed flow that the utility model embodiment is provided, the system includes calculating
Control module, storage agent tank, pulsed measuring pump and a measurement bypass；Frequency conversion of the pulsed measuring pump equipped with regulation rotating speed
The stroke control mechanism of device or remote control；The outlet of the storage agent tank is with the entrance of the pulsed measuring pump by setting side by side
The first connecting line put and the connection of the second connecting line；The first valve is provided with first connecting line；Described second
Measurement bypass inlet control device and measurement bypass outlet valve are provided with connecting line；The measurement bypass is arranged at described
Measure between bypass inlet control device and measurement bypass outlet valve；The measurement bypass includes a weighing measurement module；Institute
Stating weighing measurement module includes a gravimetric tank；The calculation control module respectively with first valve, measurement bypass inlet control
Device processed, measurement bypass outlet valve, the connection of weighing measurement module, and connected by a frequency converter or stroke control mechanism control
The pulsed measuring pump.So described measurement bypass inlet control device and measurement bypass outlet valve opening, pulsed meter
When measuring pump startup, the liquid medium in storage agent tank enters the gravimetric tank, and reaches a default high level of gravimetric tank；In liquid
When medium reaches a default high level of gravimetric tank, measurement bypass inlet control device is closed so that the liquid in gravimetric tank is situated between
Matter measures pumped by pulsed, and is reduced to the preset liquid level up to gravimetric tank；It is reduced in liquid medium up to gravimetric tank
A preset liquid level when, measurement bypass inlet control device reopen so that the liquid medium in storage agent tank is gone successively to
The gravimetric tank.So, according to the tachometer value and liquid medium of frequency converter enter gravimetric tank duration be that can determine that liquid medium
The first total flow when entering gravimetric tank；In addition, can obtain liquid medium according to weighing measurement module reaches the pre- of gravimetric tank
If the first weight during high level, and liquid medium reach gravimetric tank preset liquid level when the second weight；So as to for the moment
Between in the range of the flow of pulsed measuring pump can be measured according to the difference of unit interval two-point measurement value, and according to described first
Weight, the second weight and liquid medium from the default high level be reduced to the preset liquid level when measured value it is poor
Cumulant calculates the second total flow determined when liquid medium is introduced into gravimetric tank；So as to according to first total flow and second
Total flow summation determines the integrated flow of the liquid medium.The utility model can realize various liquid medium pulsed flows
Continuous accurate measurement, it is possible to achieve the remotely monitor of pulsed flow and control, and whole measurement module and survey medium
It is not directly contacted with, no complicated machine structural parts, fault rate is low, and long-period stable operation can be achieved.The utility model can be with
Overcome in the prior art it cannot be guaranteed that the range needed for continuously proportional control, and measurement storage tank is big, scale division value is big, it is impossible to measure
The problem of instantaneous numerical value less flow.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structural representation for accurate measurement and control system of pulsed flow that Fig. 1 provides for the utility model embodiment
Figure one；
A kind of structural representation for accurate measurement and control system of pulsed flow that Fig. 2 provides for the utility model embodiment
Figure two；
A kind of structural representation for accurate measurement and control system of pulsed flow that Fig. 3 provides for the utility model embodiment
Figure three；
A kind of structural representation for accurate measurement and control system of pulsed flow that Fig. 4 provides for the utility model embodiment
Figure four.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment provides a kind of accurate measurement and control system of pulsed flow, including meter
Calculate control module 11, storage agent tank 12, the measurement of pulsed measuring pump 13 and one bypass 14；The pulsed measuring pump is equipped with regulation
The frequency converter 21 or the stroke control mechanism of remote control of rotating speed；The outlet of the storage agent tank 12 and the pulsed measuring pump 13
Entrance connected by the first connecting line 15 and the second connecting line 16 being set up in parallel；Set on first connecting line 15
It is equipped with the first valve 17；Measurement bypass inlet control device 18 and measurement bypass outlet are provided with second connecting line 16
Valve 19；The measurement bypass 14 be arranged at the measurement bypass inlet control device 18 and measurement bypass outlet valve 19 it
Between；The measurement bypass 14 includes a weighing measurement module 20；The weighing measurement module 20 includes a gravimetric tank 201；It is described
Calculation control module 11 respectively with first valve 17, measurement bypass inlet control device 18, measurement bypass outlet valve 19,
Weighing measurement module 20 is connected, and connects the pulsed measuring pump 13 by a frequency converter 21 control.
What deserves to be explained is, the calculation control module 11 can be microprocessor, dcs
(Distributed Control System, abbreviation DCS), programmable logic controller (PLC) (Programmable Logic
Controller, abbreviation PLC) or the equipment such as industrial computer (Industrial Personal Computer, abbreviation IPC) in appoint
Meaning is a kind of, but is not only limited to this.
The measurement bypass inlet control device 18 and measurement bypass outlet valve 19 are opened, and pulsed measuring pump 13 starts
When, the liquid medium in storage agent tank 12 enters the gravimetric tank 201, and reaches a default high level of gravimetric tank 201.The storage agent
The volume of tank 12 can be 0.1 cubic metre.The minimum discharge of the pulsed measuring pump 13 can for 1 liter/per hour.
When liquid medium reaches a default high level of gravimetric tank 201, the measurement bypass inlet control device 18 is closed
Close, the liquid medium in gravimetric tank 201 is extracted out by pulsed measuring pump 13, and be reduced to the default low liquid up to gravimetric tank 201
Position.
When liquid medium is reduced to up to a preset liquid level of gravimetric tank 201, the measurement bypass inlet control device
18 open so that the liquid medium in storage agent tank 12 goes successively to the gravimetric tank 201.So repeatedly, you can form multiple works
Circulate that (i.e. the liquid level of liquid medium is reduced to preset liquid level from default high level, then is increased to from preset liquid level default
High level).
Pass through said system structure of the present utility model, you can enter according to the tachometer value of frequency converter 21 and liquid medium and claim
The duration of weight tank, determines first total flow of the liquid medium when entering gravimetric tank 201.Afterwards, according to weighing measurement module 20
The first weight when liquid medium reaches the default high level of gravimetric tank 201 is obtained, and liquid medium reaches the pre- of gravimetric tank 201
If the second weight during low liquid level；Pulsed can be measured according to the difference of unit interval two-point measurement value in the range of the time
The flow of measuring pump, and institute is reduced to from the default high level according to first weight, the second weight and liquid medium
The poor cumulant of measured value when stating preset liquid level calculates the second total flow determined when liquid medium is introduced into gravimetric tank.
The final integrated flow that the liquid medium is determined according to first total flow and the summation of the second total flow.
Further, as shown in Fig. 2 the weighing measurement module 20, can also include weighing sensor 202, upper connection
Metal hose 203, lower connection metal hose 204.The weighing sensor 202 is connected with the gravimetric tank 201, can sense title
Liquid medium weight in weight tank 201；Metal hose 203 is connected on this and connects the upper end entrance of the gravimetric tank 201, and with institute
Measurement bypass inlet control device 18 is stated to connect；The lower connection metal hose 204 is connected to be brought out under the gravimetric tank 201
Mouthful, and be connected with the measurement bypass outlet valve 19；The calculation control module 11 is connected with weighing sensor 202.
Herein, as shown in figure 3, the horizontal level of the weighing measurement module 20 is higher than the horizontal level of the storage agent tank 12,
Then measurement bypass inlet control device 18 can be the pipeline pump 181 for being capable of remote control start and stop.
Or, as shown in figure 4, the horizontal level of the weighing measurement module 20 is less than the horizontal level of the storage agent tank 12,
Then measurement bypass inlet control device 18 can be to be capable of the second valve 182 that remote control is opened and closed.
A kind of accurate measurement and control system of pulsed flow that the utility model embodiment is provided, the system includes calculating
Control module, storage agent tank, pulsed measuring pump and a measurement bypass；Frequency conversion of the pulsed measuring pump equipped with regulation rotating speed
The stroke control mechanism of device or remote control；The outlet of the storage agent tank is with the entrance of the pulsed measuring pump by setting side by side
The first connecting line put and the connection of the second connecting line；The first valve is provided with first connecting line；Described second
Measurement bypass inlet control device and measurement bypass outlet valve are provided with connecting line；The measurement bypass is arranged at described
Measure between bypass inlet control device and measurement bypass outlet valve；The measurement bypass includes a weighing measurement module；Institute
Stating weighing measurement module includes a gravimetric tank；The calculation control module respectively with first valve, measurement bypass inlet control
Device processed, measurement bypass outlet valve, the connection of weighing measurement module, and connected by a frequency converter or stroke control mechanism control
The pulsed measuring pump.So described measurement bypass inlet control device and measurement bypass outlet valve opening, pulsed meter
When measuring pump startup, the liquid medium in storage agent tank enters the gravimetric tank, and reaches a default high level of gravimetric tank；In liquid
When medium reaches a default high level of gravimetric tank, measurement bypass inlet control device is closed so that the liquid in gravimetric tank is situated between
Matter measures pumped by pulsed, and is reduced to the preset liquid level up to gravimetric tank；It is reduced in liquid medium up to gravimetric tank
A preset liquid level when, measurement bypass inlet control device reopen so that the liquid medium in storage agent tank is gone successively to
The gravimetric tank.So, according to the tachometer value and liquid medium of frequency converter enter gravimetric tank duration be that can determine that liquid medium
The first total flow when entering gravimetric tank；In addition, can obtain liquid medium according to weighing measurement module reaches the pre- of gravimetric tank
If the first weight during high level, and liquid medium reach gravimetric tank preset liquid level when the second weight；So as to for the moment
Between in the range of the flow of pulsed measuring pump can be measured according to the difference of unit interval two-point measurement value, and according to described first
Weight, the second weight and liquid medium from the default high level be reduced to the preset liquid level when measured value it is poor
Cumulant calculates the second total flow determined when liquid medium is introduced into gravimetric tank；So as to according to first total flow and second
Total flow summation determines the integrated flow of the liquid medium.The utility model can realize various liquid medium pulsed flows
Continuous accurate measurement, it is possible to achieve the remotely monitor of pulsed flow and control, and whole measurement module and survey medium
It is not directly contacted with, no complicated machine structural parts, fault rate is low, and long-period stable operation can be achieved.The utility model can be with
Overcome in the prior art it cannot be guaranteed that the range needed for continuously proportional control, and measurement storage tank is big, scale division value is big, it is impossible to measure
The problem of instantaneous numerical value less flow.
Specific embodiment is applied in the utility model to be set forth principle of the present utility model and embodiment, with
The explanation of upper embodiment is only intended to help and understands method of the present utility model and its core concept；Simultaneously for this area
Those skilled in the art, according to thought of the present utility model, will change in specific embodiments and applications, comprehensive
Upper described, this specification content should not be construed as to limitation of the present utility model.
Claims (4)
1. a kind of accurate measurement and control system of pulsed flow, it is characterised in that including calculation control module, storage agent tank, arteries and veins
Rush formula measuring pump and a measurement bypass；The stroke of frequency converter or remote control of the pulsed measuring pump equipped with regulation rotating speed
Governor motion；The outlet of the storage agent tank and the entrance of the pulsed measuring pump by the first connecting line for being set up in parallel and
Second connecting line is connected；The first valve is provided with first connecting line；Survey is provided with second connecting line
Measure bypass inlet control device and measurement bypass outlet valve；The measurement bypass is arranged at the measurement bypass inlet control dress
Put and measure between bypass outlet valve；The measurement bypass includes a weighing measurement module；The weighing measurement module includes
One gravimetric tank；The calculation control module respectively with first valve, measurement bypass inlet control device, measurement bypass outlet
Valve, the connection of weighing measurement module, and the pulsed measuring pump is connected by a frequency converter or stroke control mechanism control.
2. the accurate measurement and control system of pulsed flow according to claim 1, it is characterised in that the weighing measurement
Module, in addition to weighing sensor, upper connection metal hose, lower connection metal hose；The weighing sensor is weighed with described
Tank is connected, for sensing the liquid medium weight in gravimetric tank；The upper end of gravimetric tank described in the upper connection connection by metal hose
Entrance, and be connected with the measurement bypass inlet control device；The lower end of gravimetric tank described in the lower connection connection by metal hose
Outlet, and be connected with the measurement bypass outlet valve；The calculation control module is connected with the weighing sensor.
3. the accurate measurement and control system of pulsed flow according to claim 1, it is characterised in that the weighing measurement
The horizontal level of module is higher than the horizontal level of the storage agent tank；The measurement bypass inlet control device is being capable of remote control
The pipeline pump of start and stop.
4. the accurate measurement and control system of pulsed flow according to claim 1, it is characterised in that the weighing measurement
The horizontal level of module is less than the horizontal level of the storage agent tank；The measurement bypass inlet control device is being capable of remote control
The second valve opened and closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720024684.8U CN206440319U (en) | 2017-01-10 | 2017-01-10 | A kind of accurate measurement and control system of pulsed flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720024684.8U CN206440319U (en) | 2017-01-10 | 2017-01-10 | A kind of accurate measurement and control system of pulsed flow |
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| Publication Number | Publication Date |
|---|---|
| CN206440319U true CN206440319U (en) | 2017-08-25 |
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| CN201720024684.8U Active CN206440319U (en) | 2017-01-10 | 2017-01-10 | A kind of accurate measurement and control system of pulsed flow |
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2017
- 2017-01-10 CN CN201720024684.8U patent/CN206440319U/en active Active
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