CN206093523U - Little flow rate regulating system - Google Patents
Little flow rate regulating system Download PDFInfo
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- CN206093523U CN206093523U CN201620992155.2U CN201620992155U CN206093523U CN 206093523 U CN206093523 U CN 206093523U CN 201620992155 U CN201620992155 U CN 201620992155U CN 206093523 U CN206093523 U CN 206093523U
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Abstract
The utility model discloses a little flow rate regulating system belongs to valve control field. The utility model discloses a little flow rate regulating system, including the constant voltage modulation valve of setting on the influent stream pipe, be provided with the electromagnetism valves between influent stream pipe and the current drainage pipe, the electromagnetism valves mainly comprises at least 3 parallelly connected quantitative flow tubes, and the pipe diameter of each quantitative flow tube is all inequality, and the flow of the quantitative flow tube of just flowing through is specified, the ration all is connected with the disconnected solenoid valve of control pipeline through on the flow tube, the flow of the intercombination control current drainage pipe through the quantitative flow tube of difference. The utility model discloses improving traditional valve body flow control for pipeline flow control, can carrying out the accurate control to the flow in the pipeline, the low discharge circulation can be realized to quantitative flow tube, and response speed is fast in addition, has better result of use.
Description
Technical field
The utility model is related to technical field of valve control, more particularly, it relates to a kind of low discharge regulating system.
Background technology
With the development of science and technology, user proposes higher and higher requirement to the quality of steel.Therefore external refining is
Become the important component part of modernization steel mill, be that its production clean steel ensures the important means that continuous casting is smoothed out.Wherein LF
(Lade Furnace) refining furnace is refining furnaces most widely used, that quantity is most, and argon flow amount control is in LF refining furnace
One important step.At present LF stove Argons control system is typically all using manual or flow negative-feedback PID modes.But from being
From the viewpoint of system, during bottom-blowing argon in refining furnace, due to non-linear, Mathematical Modeling the uncertain and system of controlled device
The factors such as the acute variation of work, will carry out precise control to controlled volume-argon flow amount.
Mostly in prior art is to carry out flow control, flow negative-feedback PID side using manual or flow negative-feedback PID modes
Formula is more commonly used, and its accuracy can also reach higher level relative to regulation manually.But negative-feedback regu- lation will for precision
Not high situation is asked to use preferable, if needing high-precision control, it performs control valve aperture from signal is received to feedback,
Need the relatively long time, it is impossible to ensure precision.When especially carrying out Small Flow Control, even if common valve can shorten feedback
Time, but it is difficult to reach corresponding required precision, therefore, how to improve the control accuracy of low discharge demand becomes technology development
Difficult point.
Chinese Patent Application No.：201510229868.3, the applying date：On July 22nd, 2015, invention and created name is：One
Steam Small Flow Control System is planted, this application case discloses a kind of steam Small Flow Control System, including steam enters vapour supervisor, subtracts
Main steam header after pressure, steam enters vapour supervisor and is provided with connecting pipe between main steam header after reducing pressure, and is connected in parallel with connecting pipe
Pressure and temperature reducing control unit and Small Flow Control unit, Small Flow Control unit includes pipeline and setting gradually on pipeline
DN150 gate valves, DN125 safety valves and DN150 gate valves, control steam throughput for 3～10t/h.This application case is simply arranged
Each low discharge bypass carries out Flow-rate adjustment, can not substantially change the problem existed when low discharge is reconciled.
For the problems referred to above, many enterprises are selected using the structure of aciculiform valve element, by the valve element shape to aciculiform valve element
Correct to meet the requirement of discharge characteristic, general aciculiform valve element size is very little, the low discharge valve arrangement of this aciculiform valve element
Although the use requirement of low discharge valve can be met, some intrinsic shortcomings occur in actual use process：Aciculiform valve element
It is easily broken off, because size is less, fluid is very fast in flow velocity herein, it is easy to destructiveness is produced to aciculiform valve element and is washed away, broken
Bad aciculiform valve element, so being easy to phenomenon of rupture occur in actual use.Additionally, because the curve of aciculiform valve element is by stream
Amount test data then workman be ground by hand come, result in every time it is different, make stability it is poor, degree of regulation
Difference.
Utility model content
1. the utility model technical problem to be solved
The purpose of this utility model is that precision is low when overcoming the shortcomings of that prior art medium-small flow is controlled, there is provided a kind of
Low discharge regulating system, the regulating system in the utility model accurately can be controlled to the flow in pipeline, quantitative flow tube
Achievable low discharge circulation, and fast response time, with preferable using effect.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the utility model is provided is：
A kind of low discharge regulating system of the present utility model, including being arranged on into the controlling valve of voltage regulation in flow tube, enters flow tube
Solenoid valve block is provided between drain tube, solenoid valve block is mainly made up of the quantitative flow tube of at least 3 parallel connections, each quantitative flow tube
Caliber differ, and it is specified to flow through the flow of quantitative flow tube；Control piper break-make is respectively connected with the quantitative flow tube
Magnetic valve, by the flow for being mutually combined control drain tube of different basis weights flow tube.
Further improve as the utility model, the controlling valve of voltage regulation drainage port side is provided with second pressure change
Send device.
Further improve as the utility model, the controlling valve of voltage regulation flow inlet side is provided with first pressure change
Send device.
Further improve as the utility model, flowmeter is installed in the drain tube.
Further improve as the utility model, solenoid valve block flow inlet and/or drainage port side be provided with pipe
Road on-off control valve.
Further improve as the utility model, quantitative flow tube control valve be also associated with described quantitative flow tube,
For controlling the pipeline break-make of quantitative flow tube.
Further improve as the utility model, described to enter to be provided with bypass flow tube between flow tube and drain tube, electricity
Magnet valve group is in parallel with bypass flow tube.
Further improve as the utility model, in the bypass flow tube bypass control valve is provided with.
Further improve as the utility model, the metered flow of quantitative flow tube is 2^n, and n is oneself between 0～10
So count.
A kind of flow rate adjusting method of low discharge valve system of the present invention, its regulation process is：
Step 1, it is closed bypass control valve, valve group control valve, drain tube control valve are in opening, surely
Pressure regulating valve and each valve group control valve are in closed mode；
Step 2, the valve opening that controlling valve of voltage regulation is adjusted according to the pressure value of setting, then according to flow needs, fixed
Metered flow combination in amount flow tube, opens corresponding magnetic valve；
Step 3, when needing to adjust flow, the magnetic valve of the corresponding quantitative flow tube of corresponding rated value is closed, needed for opening
The magnetic valve of the corresponding quantitative flow tube of rated value.
Step 4, by flowmeter detect drain tube in flow, by first pressure transmitter, second pressure transmitter examine
Measuring pressure.
3. beneficial effect
The technical scheme provided using the utility model, compared with prior art, is had the advantages that：
(1) a kind of low discharge regulating system of the present utility model, using controlling valve of voltage regulation and solenoid valve block in main pipe rail
In magnetic valve use cooperatively, Fluid pressure in the controllable pipeline of controlling valve of voltage regulation, the different basis weights flow tube in solenoid valve block
Cooperate and disclosure satisfy that the demand to different flow, traditional valve body flow control is improved to piping flow control, so as to
The restriction that body size develops to technology has been broken away from, and response speed is faster, and control accuracy is improved；
(2) a kind of low discharge regulating system of the present utility model, is provided with control valve in individual pipeline, and the control valve can
Think hand stop valve, be easy to the installation and repairing of system；Set bypass flow tube is connected in parallel in pipeline with solenoid valve block,
Can be that system works on by bypassing flow tube when solenoid valve block breaks down, reduce loss；
(3) a kind of low discharge regulating system of the present utility model, set first pressure transmitter, second pressure pick-up
Device can detect before valve, downstream pressure, be easy to voltage stabilizing to adjust；The actual flow in pipeline is can detect that by flowmeter, can be aided in
Judge whether solenoid valve block breaks down.
Description of the drawings
Fig. 1 is the structural representation of low discharge regulating system of the present utility model.
Label declaration in schematic diagram：101st, flow tube is entered；102nd, flow tube is bypassed；103rd, quantitative flow tube；104th, drain tube；
201st, first pressure transmitter；202nd, second pressure transmitter；203rd, flowmeter；301st, controlling valve of voltage regulation；302nd, valve group cut-off
Valve；303rd, quantitative flow tube controls valve；304th, magnetic valve；305th, bypass control valve；306th, drain tube control valve.
Specific embodiment
To further appreciate that content of the present utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1, a kind of low discharge regulating system of the present embodiment, adjust including being arranged on into the voltage stabilizing in flow tube 101
Valve 301, controlling valve of voltage regulation 301 can carry out pressure regulation, so as to control Fluid pressure, enter between flow tube 101 and drain tube 104
Solenoid valve block is provided with, solenoid valve block is mainly made up of the quantitative flow tube 103 of 7 parallel connections, and the caliber of each quantitative flow tube 103 is not
It is identical, and it is specified to flow through the flow of quantitative flow tube 103.As a example by being used in LF stove Argon control systems, its metered flow difference
For 1m3/h、2m3/h、4m3/h、8m3/h、16m3/h、32m3/h、64m3/ h, and through Accurate Calibration, i.e., in required pressure model
Enclose and interior flow is tested；The magnetic valve 304 of control piper break-make is respectively connected with each quantitative flow tube 103, by difference
The flow for being mutually combined control drain tube 104 of quantitative flow tube 103.
Conventional regulator is to adjust flow by valve opening when Flow-rate adjustment is carried out, mostly, using regulating valve as stream
Amount adjusts main body.And the magnetic valve 34 in the present embodiment simply plays pipeline cutting action, the stream of each quantitative flow tube 103 is flowed through
Measure as its metered flow, metered flow is set as 1m3/h、2m3/h、4m3/h、8m3/h、16m3/h、32m3/h、64m3, 1m3/h
With 2m33m is realized in/h combinations3/ h flows, 1m3/ h and 4m3/ h combinations reach 5m3/ h flows, 2m3/ h and 4m3/ h combinations reach 6m3/h
Flow, 1m3/h、2m3/h、4m3The quantitative flow tube of three of/h is opened and reaches 7m simultaneously3The flow of/h, according to this principle, Ke Yishi
Existing 1m3/ h to 127m3It is worth the Flow-rate adjustment of any value between/h.
Conventional regulator needs to perform corresponding regulation action, control valve again according to feedback when flow conciliation is carried out
Opening, its reaction time is long, typically could realize stability of flow in more than 10s.And magnetic valve 34 is directly controlled in the present embodiment
Cut-out pipeline, without the need for carrying out feedback response, regulating time is shorter；And minimum achievable 1m3The Flow-rate adjustment of/h, relative to general
Logical regulating valve has higher control accuracy.The present embodiment can be applicable in gas and liquid liquid, be not specifically limited.
Embodiment 2
A kind of low discharge regulating system of the present embodiment, its basic structure is same as Example 1, and its difference is：
The flow inlet side of solenoid valve block is provided with valve group control valve 302, and drainage port side is provided with drain tube control valve 306, valve group control
Valve 302 and drain tube control valve 306 are hand stop valve, for control piper break-make.When repair and maintenance, valve can be passed through
Group control valve 302 and drain tube control valve 306 control piper interrupt carries out maintenance replacing.
Further, the drainage port side of controlling valve of voltage regulation 301 is provided with second pressure transmitter 202, is easy to detection little
Flow system operating pressure, is provided with flowmeter 203 in drain tube 104, for detecting actual flow.When aobvious in flowmeter 203
When the actual flow for showing is not inconsistent with setting flow, solenoid valve block is likely to occur failure, and by valve group valve 302 and drainage management and control are controlled
Valve processed 306 is blinded off a line, and then can be safeguarded.
Embodiment 3
A kind of low discharge regulating system of the present embodiment, its basic structure is same as Example 2, and its difference is：
When flow adjustment range is less, the quantitative flow tube of part smaller value can also be selected to coordinate with the quantitative flow tube of big rated value,
For example select 1m3/h、2m3/h、4m3/h、8m3/h、64m3The quantitative flow tube of/h is engaged, mainly by 1m3/h、2m3/h、
4m3/h、8m3Combination and 64m between/h3/ h is engaged, and maintains 64m3The bare flow of/h is constant, controls 1m3/h、2m3/h、4m3/
h、8m3The break-make of magnetic valve realizes that low discharge is adjusted in the quantitative flow tubes of/h.
Embodiment 4
A kind of low discharge regulating system of the present embodiment, its basic structure is same as Example 2, and its difference is：
The flow inlet side of controlling valve of voltage regulation 301 is provided with first pressure transmitter 201, and first pressure transmitter 201 is used to detect voltage stabilizing
The upstream pressure of regulating valve 301, second pressure transmitter 202 is used to detect the downstream pressure of controlling valve of voltage regulation 301.
Further, entering to be provided between flow tube 101 and drain tube 104 bypass flow tube 102, solenoid valve block and bypass
Flow tube is in parallel.Bypass control valve 305 is provided with bypass flow tube 102, the bypass control valve 305 is hand stop valve, works as electromagnetism
When valve group breaks down, valve group control valve 302 can be closed, open bypass control valve 305 and ensure that system works on, be reduced and damage
Lose.
Further, quantitative flow tube control valve 303 is also associated with quantitative flow tube 103, for controlling quantitative flow tube 103
Pipeline break-make.It is easy to safeguard or change magnetic valve 304.
Additionally, also can use solenoid valve to replace controlling valve of voltage regulation 301, the main purpose for arranging controlling valve of voltage regulation 301 exists
In stablizing for pressure is ensured, when controlling valve of voltage regulation 301 is replaced with solenoid valve, second pressure transmitter 202 can be passed through
Feedback of the information is carried out to controlling valve of voltage regulation 301, pressure stability is made in setting range, to ensure the pressure stability of solenoid valve block,
So that it is guaranteed that the accuracy of the precision controlling of flow.
Embodiment 5
A kind of low discharge regulating system of the present embodiment, its basic structure is same as Example 4, and its difference is：
Bypass control valve 305 selects Electromagnetic Flow regulating valve, and it can be with solenoid valve block collaborative work.Made with bypass control valve 305
For bare flow valve so as to stable in a flow value, Flow-rate adjustment is carried out by solenoid valve block.Being arranged such can be using side
Electromagnetic Flow regulating valve in road carries out big flow control, and relying primarily on solenoid valve block carries out Flow-rate adjustment, can reduce electromagnetism
The quantity of the quantitative flow tube of valve group, can realize high-precision flow control again, and using effect is good.
For above-described embodiment, can be mutually combined between the feature of its scheme, be not particularly limited.The present invention is also provided
A kind of flow rate adjusting method of low discharge regulating system, its regulation process is：
Step 1, it is closed bypass control valve 305, valve group control valve 302, drain tube control valve 306 is in opening
State is opened, controlling valve of voltage regulation 301 and each valve group control valve 302 are in closed mode；
Step 2, the valve opening that controlling valve of voltage regulation 301 is adjusted according to the pressure value of setting, then according to flow needs,
Metered flow combination in quantitative flow tube 103, opens corresponding magnetic valve 304；
For example need 84m3The flow of/h, can control metered flow is 64m3、16m3/h、4m3Electricity in the quantitative flow tube of/h
Magnet valve 304 is opened, and total flow is 84m3/h。
Step 3, when needing to adjust flow, close the magnetic valve 304 of the corresponding quantitative flow tube 103 of corresponding rated value, open
Open the magnetic valve 304 of the corresponding quantitative flow tube 103 of required rated value.
For example need to adjust flow to 88m3During/h, only 4m need to be closed3Magnetic valve 304 in the quantitative flow tube of/h, opens
8m3Magnetic valve 304 in the quantitative flow tube of/h, total flow is 88m3/h。
Step 4, by flowmeter 203 observe drain tube 104 in flow, by first pressure transmitter 201, second pressure
The observed pressure of transmitter 202, it is ensured that system is working properly.
It should be noted that the present invention is mainly by taking the control of flow in the control of LF stoves Argon as an example, the scheme of carrying out is said
It is bright；Now minimum discharge is set as 1m3In the flow that the field has been very little, common regulating valve is difficult to/h in the field
Obtain the precision.If applied to other field, may be alternatively provided as less flow, it is not specifically limited.
Additionally, the metered flow of quantitative flow tube 103 for the main purpose of 2^n being by being mutually combined energy in the present invention
Enough realize the regulation of successive value range of flow, can as method for optimizing, also dependent on needing to carry out data change when specifically used,
It is 1m for example to arrange metered flow3/h、2m3/h、3m3The quantitative flow tube of/h, is not specifically limited.
The utility model is used cooperatively using the controlling valve of voltage regulation in main pipe rail with the magnetic valve in solenoid valve block, and voltage stabilizing is adjusted
Fluid pressure in the controllable pipeline of section valve, the cooperating for different basis weights flow tube in solenoid valve block disclosure satisfy that to different flow
Demand, traditional valve body flow control is improved to piping flow control, so as to break away from what body size developed to technology
Limit, and response speed is faster, and control accuracy is improved, and the innovation development for technology provides Research foundation.
Below schematically to the present invention and embodiments thereof be described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel enlightened by it, in the case of without departing from the invention objective, is designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (9)
1. a kind of low discharge regulating system, including being arranged on into the controlling valve of voltage regulation (301) in flow tube (101), it is characterised in that：
Enter and solenoid valve block is provided between flow tube (101) and drain tube (104), solenoid valve block is mainly by the quantitative stream of at least 3 parallel connections
Pipe (103) composition, the caliber of each quantitative flow tube (103) is differed, and it is specified to flow through the flow of quantitative flow tube (103)；It is described
The magnetic valve (304) of control piper break-make is respectively connected with quantitative flow tube (103), by the mutual of different basis weights flow tube (103)
The flow of combination control drain tube (104).
2. a kind of low discharge regulating system according to claim 1, it is characterised in that：Controlling valve of voltage regulation (301) row
Head piece side is provided with second pressure transmitter (202).
3. a kind of low discharge regulating system according to claim 1, it is characterised in that：The controlling valve of voltage regulation (301) is entered
Head piece side is provided with first pressure transmitter (201).
4. a kind of low discharge regulating system according to claim 1, it is characterised in that：Install on the drain tube (104)
There is flowmeter (203).
5. a kind of low discharge regulating system according to claim 1, it is characterised in that：Solenoid valve block flow inlet and/
Or drainage port side is provided with pipeline on-off control valve.
6. a kind of low discharge regulating system according to claim 1, it is characterised in that：In described quantitative flow tube (103)
Quantitative flow tube control valve (303) is also associated with, for controlling the pipeline break-make of quantitative flow tube (103).
7. a kind of low discharge regulating system according to any one of claim 1～6, it is characterised in that：It is described enter flow tube
(101) bypass flow tube (102) is provided with and drain tube (104) between, solenoid valve block is in parallel with bypass flow tube.
8. a kind of low discharge regulating system according to claim 7, it is characterised in that：Set on bypass flow tube (102)
It is equipped with bypass control valve (305).
9. a kind of low discharge regulating system according to claim 1, it is characterised in that：The specified stream of quantitative flow tube (103)
Measure as 2^n, n is the natural number between 0～10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620992155.2U CN206093523U (en) | 2016-08-29 | 2016-08-29 | Little flow rate regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620992155.2U CN206093523U (en) | 2016-08-29 | 2016-08-29 | Little flow rate regulating system |
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| CN206093523U true CN206093523U (en) | 2017-04-12 |
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| CN201620992155.2U Active CN206093523U (en) | 2016-08-29 | 2016-08-29 | Little flow rate regulating system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824101A (en) * | 2019-03-22 | 2019-05-31 | 广东万家乐燃气具有限公司 | A kind of filter device and water heater |
| CN110131916A (en) * | 2019-04-12 | 2019-08-16 | 宁波工程学院 | The heat pump system and control method of heat complementary air-conditioning, two alliance of hot water step by step |
| CN110780015A (en) * | 2018-07-31 | 2020-02-11 | 西安市宇驰检测技术有限公司 | Detection device and detection method for non-methane total hydrocarbons |
| CN112169584A (en) * | 2020-10-09 | 2021-01-05 | 山东国舜建设集团有限公司 | Device and method for controlling ammonia water flow in denitration system |
| CN112441545A (en) * | 2020-11-23 | 2021-03-05 | 四川神华天明发电有限责任公司 | Filling line flow control system, filling method, electronic equipment and storage medium |
-
2016
- 2016-08-29 CN CN201620992155.2U patent/CN206093523U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780015A (en) * | 2018-07-31 | 2020-02-11 | 西安市宇驰检测技术有限公司 | Detection device and detection method for non-methane total hydrocarbons |
| CN109824101A (en) * | 2019-03-22 | 2019-05-31 | 广东万家乐燃气具有限公司 | A kind of filter device and water heater |
| CN110131916A (en) * | 2019-04-12 | 2019-08-16 | 宁波工程学院 | The heat pump system and control method of heat complementary air-conditioning, two alliance of hot water step by step |
| CN112169584A (en) * | 2020-10-09 | 2021-01-05 | 山东国舜建设集团有限公司 | Device and method for controlling ammonia water flow in denitration system |
| CN112441545A (en) * | 2020-11-23 | 2021-03-05 | 四川神华天明发电有限责任公司 | Filling line flow control system, filling method, electronic equipment and storage medium |
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