CN108375999A - A kind of flow stable-pressure device and its method for stabilizing voltage based on parallel cylinder - Google Patents
A kind of flow stable-pressure device and its method for stabilizing voltage based on parallel cylinder Download PDFInfo
- Publication number
- CN108375999A CN108375999A CN201810488467.3A CN201810488467A CN108375999A CN 108375999 A CN108375999 A CN 108375999A CN 201810488467 A CN201810488467 A CN 201810488467A CN 108375999 A CN108375999 A CN 108375999A
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- Prior art keywords
- valve
- cylinder
- solenoid valve
- pressure
- fluid infusion
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
Abstract
The present invention relates to a kind of flow stable-pressure devices and its method for stabilizing voltage based on parallel cylinder, its fluid infusion pump connects with fluid reservoir, the other end of fluid infusion pump is connected with the first cylinder and the second cylinder respectively by the first solenoid valve on-off valve and second solenoid valve on-off valve, connect respectively with the first limit sensors and the second limit sensors outside first cylinder and the second cylinder, the first cylinder and the second cylinder are connected by the first electric Proportion valve and the second electric Proportion valve with source nitrogen simultaneously, connected with pressure transmitter by third solenoid valve on-off valve and the 4th solenoid valve on-off valve, the output end of pressure transmitter connects with PLC control signals, PLC connects with host computer；The 5th solenoid valve on-off valve of the other end of fluid infusion pump is connected by bleed pressure table with air-source, and realize the first cylinder and the second cylinder from there through circuit design and five solenoid valve on-off valves connects with fluid infusion pump, pressure transmitter and source nitrogen respectively in parallel.
Description
Technical field
The invention belongs to electrical control equipments, are related to voltage stabilizing technique, and specifically a kind of flow based on parallel cylinder is steady
Pressure device and its method for stabilizing voltage.
Background technology
When having a degree of precision requirement to the stabilization of output pressure when equipment works it is necessary to the medium in pressure vessel into
Row voltage stabilizing, flow stable-pressure device are exactly a kind of new mode that voltage stabilizing is carried out to the medium output pressure in pressure vessel.To easy
Explosive liquid pressing is fired, common method is pressurized using inertia high pressure gas in current industrial, by pressure regulation valve regulation come steady
Constant-pressure reduces fluid pressure fluctuation by accumulator.This control technology has following deficiency：A. it cannot achieve equipment work
Voltage stabilizing in the process；B. it is long to cannot be satisfied the equipment requirement pressure stability time, needs the regular demand to pressurizing vessel fluid infusion；
C. cylinder pressure oscillation control difficulty in fluid infusion is larger；D. cost height, pressure regulator valve and accumulator increase the cost of equipment.
Through retrieval, not yet discovery pair is similar with present patent application at present carries out the special of flow voltage stabilizing for parallel cylinder
Sharp document.
Invention content
Technical problems to be solved needed for the present invention are overcome the deficiencies in the prior art places, and providing one kind can carry for a long time
The flow stable-pressure device and its method for stabilizing voltage based on parallel cylinder substantially reduced for steady pressure liquid, cost.
The present invention solves its technical problem and following technical scheme is taken to realize：
A kind of flow stable-pressure device based on parallel cylinder, including fluid infusion pump (14), fluid reservoir (13), the first solenoid valve
On-off valve (8), second solenoid valve on-off valve (9), the first cylinder (4), the second cylinder (5), the first limit sensors (18), second
Limit sensors (19), the first electric Proportion valve (2), the second electric Proportion valve (3), source nitrogen (1), third solenoid valve on-off valve
(6), the 4th solenoid valve on-off valve (7), pressure transmitter (15), PLC (16), host computer (17), the 5th solenoid valve on-off valve
(12), air-source (10), fluid infusion pump (14) connect with fluid reservoir (13), and the other end of fluid infusion pump passes through the first solenoid valve on-off valve
(8) connect respectively with the first cylinder (4) and the second cylinder (5) with second solenoid valve on-off valve (9), the first cylinder (4) and second
Connects respectively with the first limit sensors (18) and the second limit sensors (19) outside cylinder (5), at the same the first cylinder (4) and
Second cylinder (5) is connected by the first electric Proportion valve (2) and the second electric Proportion valve (3) with source nitrogen (1), and third electricity is passed through
Magnet valve on-off valve (6) and the 4th solenoid valve on-off valve (7) connect with pressure transmitter (15), the output end of pressure transmitter (15)
Connect with PLC (16) control signal, PLC (16) connects with host computer (17)；The 5th solenoid valve break-make of the other end of fluid infusion pump
Valve (12) is connected by bleed pressure table (11) with air-source (10), from there through circuit design and five solenoid valve on-off valves
It realizes the first cylinder (4) and the second cylinder (5) and pumps (14), pressure transmitter (15) and nitrogen with fluid infusion respectively in parallel
Air source (1) connects.
Moreover, each solenoid valve on-off valve (8), (9), (6), (7), (12), electric Proportion valve (2) and (3), pressure inverting
Device (15) and limit sensors (18) and the input terminal of (19) are connected with programmable controller PLC (16).
Moreover, the volume of the cylinder is 7.85L, it is 5.2L, internal and pressurising medium contact site to control its swept volume
Divide and uses corrosion resistant fluorine cushion rubber.
Moreover, the volume of the fluid reservoir is 40L, appearance and size is 500mm × 350mm × 300mm, liquid tank level
Control is controlled by liquid level height difference platen press, and the relationship of liquid level height difference Δ h and pressure is
Moreover, the material of the fluid reservoir uses stainless steel.
Moreover, the stable-pressure device is using cylinder in parallel, the step of method for stabilizing voltage, is：
A, the initial fluid infusion stage：Third solenoid valve on-off valve (6) and the 4th solenoid valve on-off valve (7) are closed, the first electromagnetism
Valve on-off valve (8) and second solenoid valve on-off valve (9) are opened, and the first electric Proportion valve (2) and the second electric Proportion valve (3) are adjusted to
Minimum, the 5th solenoid valve on-off valve (12) are opened, and fluid infusion pumps (14) and starts to work, and under the control of host computer (17), arrival refers to
Timing is carved, and the 5th solenoid valve on-off valve (12) is closed, and fluid infusion pumps (14) and stops, the first solenoid valve on-off valve (8) and the second electromagnetism
Valve on-off valve (9) is closed；
B, the pressure period：First electric Proportion valve (2) works, and the second electric Proportion valve (3) is closed, third solenoid valve break-make
Valve (6) is opened, and the first solenoid valve on-off valve (8), second solenoid valve on-off valve (9) and the 4th solenoid valve on-off valve (7) are closed, right
First cylinder (4) pressurizes, and by pressure transmitter (15), detection obtains the pressure value needed for equipment in real time, and is sent to slave computer
PLC (16) feeds back to host computer (17), and according to pressure value size, host computer (17) sends Regulate signal, adjusts first and electrically compares
Example valve (2) controls voltage value, to reach pressure stability control, it is made to stablize the pressure value in needs；
C, working stage：After first cylinder (4) reaches stable pressure, equipment work, while the second electric Proportion valve (3)
Work, setting pressure is forced into the second cylinder (5)；When the limit sensors (18) of the first cylinder (4) detect medium deficiency
When, which is sent to slave computer PLC (16), is switched to the second cylinder (5), and third solenoid valve on-off valve (6) is closed, the 4th electricity
Magnet valve on-off valve (7) is opened, and then the first solenoid valve on-off valve (8) is opened, to the first cylinder (4) fluid infusion, the first electricity after fluid infusion
Gas proportioning valve (2) work pressurization provides continual and steady pressure by this process cycle；
D, the pressure release stage：Experiment terminates, be to the first cylinder (4) pressure release, third solenoid valve on-off valve (6), the 4th electromagnetism
Valve on-off valve (7) is opened, the first solenoid valve on-off valve (8), second solenoid valve on-off valve (9), the 5th solenoid valve on-off valve (12)
It closes, pressure release terminates.
Advantages of the present invention effect is：
The present invention ensures output Jie's pressure due to using parallel cylinder, two cylinder independence Isobarically Controls, equipressure to work alternatively
Stablize, while realizing voltage stabilizing in the equipment course of work, can be long lasting for the medium for providing steady pressure, it can be in pressurizing vessel
Still implement steady pressure control during fluid infusion, this is first；Secondly as the design is equipped with and PCL phases outside cylinder
The limit sensors connect can detect the liquid level situation in cylinder in real time by host computer；Third, the break-make solenoid valve of the design
It is all controlled by PCL, the pressure in cylinder is uploaded to PLC by pressure transmitter, so this technology is convenient for automation control.The
Four, the design uses the common cylinder by transformation, replaces the higher piston accumulator of cost and regulating valve, therefore reduces into
This；5th, the design uses cylinder, has flexible working pressure range compared with accumulator, while possessing good voltage stabilizing
Accuracy.
Description of the drawings
Fig. 1 is the control system figure of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings and by specific embodiment, and following embodiment is descriptive
, it is not restrictive, protection scope of the present invention cannot be limited with this.
A kind of flow stable-pressure device based on parallel cylinder, as shown in Figure 1, including fluid infusion pump 14, fluid reservoir 13, first
Solenoid valve on-off valve 8, second solenoid valve on-off valve 9, the first cylinder 4, the second cylinder 5, the limit of the first limit sensors 18, second
Sensor 19, the first electric Proportion valve 2, the second electric Proportion valve 3, source nitrogen 1, third solenoid valve on-off valve 6, the 4th solenoid valve
On-off valve 7, pressure transmitter 15, PLC 16, host computer 17, the 5th solenoid valve on-off valve 12, air-source 10.Its connection relation
For：
Fluid infusion pump 14 connects with fluid reservoir 13, and the other end of fluid infusion pump passes through the first solenoid valve on-off valve 8 and the second electromagnetism
Valve on-off valve 9 connects with the first cylinder 4 and the second cylinder 5 respectively, is limited respectively with first outside the first cylinder 4 and the second cylinder 5
Level sensor 18 and the second limit sensors 19 connect, while the first cylinder 4 and the second cylinder 5 pass through the first electric Proportion valve 2
Connect with source nitrogen 1 with the second electric Proportion valve 3, passes through third solenoid valve on-off valve 6 and the 4th solenoid valve on-off valve 7 and pressure
Transmitter 15 connects, and the output end of pressure transmitter 15 connects with 16 control signals of PLC, and PLC 16 connects with host computer 17；
The 5th solenoid valve on-off valve 12 of the other end of fluid infusion pump is connected by bleed pressure table 11 with air-source 10, is set from there through pipeline
Meter and five solenoid valve on-off valves realize the first cylinder 4 and the second cylinder 5 and pump 14, pressure with fluid infusion respectively in parallel
Power transmitter 15 and source nitrogen 1 connect.
Each solenoid valve on-off valve 8,9,6,7,12, electric Proportion valve 2 and 3, pressure transmitter 15 and limit sensors 18
Input terminal with 19 is connected with programmable controller PLC 16.
The volume of above-mentioned cylinder is 7.85L, and it is 5.2L to control its swept volume, internal to be used with pressurising medium contact portion
Corrosion resistant fluorine cushion rubber.
The volume of the fluid reservoir is 40L, and appearance and size is 500mm × 350mm × 300mm, liquid tank level control
It is controlled by liquid level height difference platen press, the relationship of liquid level height difference Δ h and pressure isIn order to improve the anti-of fluid reservoir
Corrosivity, material use stainless steel.
The stable-pressure device is in order to provide continual and steady pressure, worked to be known as using cylinder in parallel：
A, the initial fluid infusion stage：Third solenoid valve on-off valve 6 and the 4th solenoid valve on-off valve 7 are closed, and the first solenoid valve is logical
Disconnected valve 8 and second solenoid valve on-off valve 9 are opened, and the first electric Proportion valve 2 and the second electric Proportion valve 3 are adjusted to minimum, the 5th electricity
Magnet valve on-off valve 12 is opened, and fluid infusion pump 14 is started to work, and under the control of host computer 17, is reached given time and (is set according to difference
It is standby to require setting), the 5th solenoid valve on-off valve 12 is closed, and fluid infusion pump 14 stops, the first solenoid valve on-off valve 8 and second solenoid valve
On-off valve 9 is closed.
B, the pressure period：First electric Proportion valve 2 works, and the second electric Proportion valve 3 is closed, third solenoid valve on-off valve 6
It opens, the first solenoid valve on-off valve 8, second solenoid valve on-off valve 9 and the 4th solenoid valve on-off valve 7 are closed, and are added to the first cylinder 4
Pressure, by pressure transmitter 15, detection obtains the pressure value needed for equipment in real time, and be sent to slave computer PLC 16 feed back to it is upper
Machine 17, according to pressure value size, host computer 17 sends Regulate signal, adjusts the first electric Proportion valve 2 and controls voltage value, to reach
It is controlled to pressure stability, it is made to stablize the pressure value in needs.
C, working stage：After first cylinder 4 reaches stable pressure, equipment work, while 3 work of the second electric Proportion valve
Make, setting pressure is forced into the second cylinder 5；When the limit sensors 18 of the first cylinder 4 detect medium deficiency, the signal
It is sent to slave computer PLC 16, is switched to the second cylinder 5, third solenoid valve on-off valve 6 is closed, and the 4th solenoid valve on-off valve 7 is beaten
It opens, then the first solenoid valve on-off valve 8 is opened, to 4 fluid infusion of the first cylinder, the first electric Proportion valve 2 work pressurization after fluid infusion.It presses
This process cycle provides continual and steady pressure.
D, the pressure release stage：Experiment terminates, be to 4 pressure release of the first cylinder, and third solenoid valve on-off valve 6, the 4th solenoid valve are logical
Disconnected valve 7 is opened, and the first solenoid valve on-off valve 8, second solenoid valve on-off valve 9, the 5th solenoid valve on-off valve 12 are closed, pressure release knot
Beam.
The parallel air cylinder device of the design has the control of two-way key during realizing voltage stabilizing：First, single-cylinder pressure is steady
Qualitative contrlol；Second is that pressure stability controls when switch operating cylinder.First cylinder 4 and the second cylinder 5 pass through PLC by fluid infusion pump 14
16 the 4th solenoid valve on-off valves 7 of control and second solenoid valve on-off valve 9 are realized.
Although disclosing the embodiment of the present invention and attached drawing for the purpose of illustration, those skilled in the art can manage
Solution：Do not departing from the present invention and spirit and scope of the appended claims in, various substitutions, changes and modifications be all it is possible,
Therefore, the scope of the present invention is not limited to embodiment and attached drawing disclosure of that.
Claims (6)
1. a kind of flow stable-pressure device based on parallel cylinder, including fluid infusion pump (14), fluid reservoir (13), the first solenoid valve are logical
Disconnected valve (8), second solenoid valve on-off valve (9), the first cylinder (4), the second cylinder (5), the first limit sensors (18), the second limit
Level sensor (19), the first electric Proportion valve (2), the second electric Proportion valve (3), source nitrogen (1), third solenoid valve on-off valve
(6), the 4th solenoid valve on-off valve (7), pressure transmitter (15), PLC (16), host computer (17), the 5th solenoid valve on-off valve
(12), air-source (10), fluid infusion pump (14) connect with fluid reservoir (13), and the other end of fluid infusion pump passes through the first solenoid valve on-off valve
(8) connect respectively with the first cylinder (4) and the second cylinder (5) with second solenoid valve on-off valve (9), the first cylinder (4) and second
Connects respectively with the first limit sensors (18) and the second limit sensors (19) outside cylinder (5), at the same the first cylinder (4) and
Second cylinder (5) is connected by the first electric Proportion valve (2) and the second electric Proportion valve (3) with source nitrogen (1), and third electricity is passed through
Magnet valve on-off valve (6) and the 4th solenoid valve on-off valve (7) connect with pressure transmitter (15), the output end of pressure transmitter (15)
Connect with PLC (16) control signal, PLC (16) connects with host computer (17)；The 5th solenoid valve break-make of the other end of fluid infusion pump
Valve (12) is connected by bleed pressure table (11) with air-source (10), from there through circuit design and five solenoid valve on-off valves
It realizes the first cylinder (4) and the second cylinder (5) and pumps (14), pressure transmitter (15) and nitrogen with fluid infusion respectively in parallel
Air source (1) connects.
2. the flow stable-pressure device according to claim 1 based on parallel cylinder, it is characterised in that：Each solenoid valve is logical
Disconnected valve (8), (9), (6), (7), (12), electric Proportion valve (2) and (3), pressure transmitter (15) and limit sensors (18) and
(19) input terminal is connected with programmable controller PLC (16).
3. the flow stable-pressure device according to claim 1 based on parallel cylinder, it is characterised in that：The appearance of the cylinder
Product is 7.85L, and it is 5.2L to control its swept volume, internal to use corrosion resistant fluorine cushion rubber with pressurising medium contact portion.
4. the flow stable-pressure device according to claim 1 based on parallel cylinder, it is characterised in that：The fluid reservoir
Volume be 40L, appearance and size be 500mm × 350mm × 300mm, liquid tank level control controlled by liquid level height difference platen press,
The relationship of liquid level height difference Δ h and pressure is
5. the flow stable-pressure device according to claim 1 based on parallel cylinder, it is characterised in that：The fluid reservoir
Material uses stainless steel.
6. a kind of method for stabilizing voltage of the flow stable-pressure device based on parallel cylinder as described in claim 1, it is characterised in that：
Its step is：
A, the initial fluid infusion stage：Third solenoid valve on-off valve (6) and the 4th solenoid valve on-off valve (7) are closed, and the first solenoid valve is logical
Disconnected valve (8) and second solenoid valve on-off valve (9) are opened, and the first electric Proportion valve (2) and the second electric Proportion valve (3) are adjusted to most
Small, the 5th solenoid valve on-off valve (12) is opened, and fluid infusion pumps (14) and starts to work, and under the control of host computer (17), is reached specified
Moment, the 5th solenoid valve on-off valve (12) are closed, and fluid infusion pumps (14) and stops, the first solenoid valve on-off valve (8) and second solenoid valve
On-off valve (9) is closed；
B, the pressure period：First electric Proportion valve (2) works, and the second electric Proportion valve (3) is closed, third solenoid valve on-off valve
(6) it opens, the first solenoid valve on-off valve (8), second solenoid valve on-off valve (9) and the closing of the 4th solenoid valve on-off valve (7), to the
One cylinder (4) pressurizes, and by pressure transmitter (15), detection obtains the pressure value needed for equipment in real time, and is sent to slave computer PLC
(16) host computer (17) is fed back to, according to pressure value size, host computer (17) sends Regulate signal, adjusts the first electric Proportion valve
(2) voltage value is controlled, to reach pressure stability control, it is made to stablize the pressure value in needs；
C, working stage：After first cylinder (4) reaches stable pressure, equipment work, while the second electric Proportion valve (3) work
Make, setting pressure is forced into the second cylinder (5)；When the limit sensors (18) of the first cylinder (4) detect medium deficiency,
The signal is sent to slave computer PLC (16), is switched to the second cylinder (5), and third solenoid valve on-off valve (6) is closed, the 4th electromagnetism
Valve on-off valve (7) is opened, and then the first solenoid valve on-off valve (8) is opened, and to the first cylinder (4) fluid infusion, first is electrical after fluid infusion
Proportioning valve (2) work pressurization provides continual and steady pressure by this process cycle；
D, the pressure release stage：Experiment terminates, be to the first cylinder (4) pressure release, and third solenoid valve on-off valve (6), the 4th solenoid valve are logical
Disconnected valve (7) is opened, and the first solenoid valve on-off valve (8), second solenoid valve on-off valve (9), the 5th solenoid valve on-off valve (12) are closed,
Pressure release terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488467.3A CN108375999A (en) | 2018-05-21 | 2018-05-21 | A kind of flow stable-pressure device and its method for stabilizing voltage based on parallel cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810488467.3A CN108375999A (en) | 2018-05-21 | 2018-05-21 | A kind of flow stable-pressure device and its method for stabilizing voltage based on parallel cylinder |
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| CN108375999A true CN108375999A (en) | 2018-08-07 |
Family
ID=63033570
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| CN201810488467.3A Pending CN108375999A (en) | 2018-05-21 | 2018-05-21 | A kind of flow stable-pressure device and its method for stabilizing voltage based on parallel cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110339742A (en) * | 2019-07-10 | 2019-10-18 | 南方科技大学 | High-throughput direct write equipment and direct-write methods, liquid phase method preparation system |
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