CN104344048A - Liquid level regulating device and liquid level regulating method - Google Patents
Liquid level regulating device and liquid level regulating method Download PDFInfo
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- CN104344048A CN104344048A CN201410532861.4A CN201410532861A CN104344048A CN 104344048 A CN104344048 A CN 104344048A CN 201410532861 A CN201410532861 A CN 201410532861A CN 104344048 A CN104344048 A CN 104344048A
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- liquid level
- control
- transmitter
- circuit
- main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a liquid level regulating device and a liquid level regulating method. The liquid level regulating device comprises a main valve (5), a control device, a liquid level meter (13) and a transmitter (12), wherein the main valve (5) is used for being connected into a liquid supply pipeline (4); the control device is used for controlling the main valve; the liquid level meter (13) is used for measuring the liquid level of a liquid storage device (9); the transmitter is electrically connected between the liquid level meter and the control device, a liquid level signal measured by the liquid level meter is converted into a control signal through the transmitter, and the transmitter is used for transmitting the control signal to the control device. The liquid level signal is converted into the control signal through the transmitter after the liquid level is measured by the liquid level meter of the liquid level regulating device, the control device is used for controlling the opening or closing of the main valve according to the control signal, the specific liquid level of the liquid storage device can be intuitively reflected by the liquid level meter, and meanwhile the liquid level return different can be set for the control device according to practical requirements, so that frequent action of the main valve is avoided.
Description
Technical field
The present invention relates to liquid level and regulate field, particularly, relate to a kind of liquid level regulation device and level regulating method.
Background technique
In tradition, the liquid level of liquid storage device is regulated and is generally regulated by remote control float valve, remote control float valve comprises main valve 5, ball float 8 and ball float pilot valve 6, described main valve 5 is arranged on for the liquid feeding pipeline 4 to liquid storage device feed flow, described ball float 8 is arranged in liquid storage device 9, main valve 5 comprises control room 51 and valve 52, carrys out control valve 52 open or close by the change of hydraulic pressure in control room 51.
It is the schematic diagram of the liquid level regulation device in tradition shown in Fig. 1, when in liquid storage device 9, water level is lower than rational height, the ball float 8 ball float pilot valve 6 that falls is opened, liquid in liquid feeding pipeline 4 enters control room 51 by the first pipeline 2, then pond is flowed into through the second pipeline 7, now control room 51 internal pressure is lower, and valve 52 is opened, and liquid feeding pipeline 4 supplies water to liquid storage device 9; When in liquid storage device 9, water level reaches rational height, ball float 8 floats ball float pilot valve 6 closes, and the liquid in liquid feeding pipeline 4 cannot flow out after entering control room 51 by the first pipeline 2, and in control room 51, hydraulic pressure raises, promote valve 52 to close, liquid feeding pipeline 4 stops supplying water to liquid storage device 9; When in liquid storage device 9 during water level decreasing, ball float 8 pilot valve reopens, and control room 51 hydraulic pressure declines, and valve 52 is again opened and liquid feeding pipeline 4 is supplied water to liquid storage device 9, makes the liquid level of liquid storage device 9 remain on setting height.
But, ball float 8 intuitively cannot reflect the liquid level of liquid storage device 9, when ball float 8 breaks down, staff cannot Timeliness coverage, cause overflow in liquid storage device 9, feed flow can only be stopped by closing hand stop valve 1 after discovery, pollute working environment and cause economic loss, and ball float 8 is arranged in the middle part of liquid storage device 9, inconvenient maintenance when causing ball float 8 to break down.Further, due to the fluid level control device in tradition main valve 5 open or closed be what to be controlled by the change in location of ball float 8, cause the position of ball float 8 slightly to change main valve 5 and will to open or closed, main valve 5 frequent movement makes shorten the working life of main valve 5.
Summary of the invention
The object of this invention is to provide a kind of liquid level regulation device, this liquid level regulation device intuitively can reflect the liquid level of liquid storage device.
According to an aspect of the present invention, a kind of liquid level regulation device is provided, comprises: for being connected to the main valve in liquid feeding pipeline; For controlling the control gear of described main valve; For measuring the level meter of the liquid level of liquid storage device; And transmitter, this transmitter is connected electrically between described level meter and described control gear, and the liquid level signal that described level meter is measured is converted into control signal through described transmitter, and this transmitter sends described control signal to described control gear.
Preferably, described control gear comprises control circuit and is connected to the automatically controlled on-off valve of described control circuit, described transmitter is electrically connected with described control circuit by described transmitter output switch, described transmitter output switch is electrically connected on described transmitter and opens or closes can respond described control signal, thus controls the break-make of described control circuit.
Preferably, the two ends of described control circuit can be electrically connected on power line, described control circuit is provided with selector switch, parallel circuit unit and automatically controlled on-off valve, described parallel circuit unit comprises automatic circuit parallel with one another and manual circuit, described transmitter output switch is arranged on described automatic circuit to control the break-make of this automatic circuit, described selector switch can at automated location, manual position and off position switch, wherein at described automated location, the contact of described selector switch is electrically connected described automatic circuit, in described manual position, the described manual circuit of contact electrical connection of described selector switch, described in described off position, the contact of selector switch and described automatic circuit and manual circuit all disconnect.
Preferably, described control gear also comprises source of the gas, and described main valve is Pneumatic control type main valve, and this main valve comprises the control room for controlling this main valve open or closedown, described source of the gas is connected with described control room, and described automatically controlled on-off valve is arranged in the gas circuit between described source of the gas and described control room.
Preferably, the gas circuit between described source of the gas and described control room is also provided with flow control valve.
Preferably, described control room comprises the first chamber and the second chamber, and when described first chamber air inlet, the second chamber venting, described main valve performs closing motion, and when described first chamber venting, the second chamber air inlet, described main valve performs opening action.
Preferably, described liquid level counts ultrasonic level gage.
According to another aspect of the present invention, a kind of level regulating method is provided, comprises: first, measured the liquid level of liquid storage device by level meter; Then, liquid level signal is sent to transmitter by described level meter, by described transmitter, described liquid level signal is converted into control signal; Finally, described control signal is sent to control gear, is controlled the described main valve be arranged on liquid feeding pipeline by described control gear.
Pass through technique scheme, liquid level signal is sent to transmitter after measuring liquid level by level meter, control signal is converted into by transmitter, and described control signal is sent to control gear, described control gear carrys out opening of control bound or closed according to described control signal, described level meter can reflect the concrete liquid level of liquid storage device intuitively, and described level meter can select appropriate location according to actual needs in the mounting point of described liquid storage device, such as, the ingress of described liquid storage device upper end, inwall is first-class, make level meter can measure liquid level in liquid storage device, be convenient to the taking-up maintenance of level meter, simultaneously can according to actual needs to control gear setting liquid level return difference, avoid the frequent movement of main valve.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of the liquid level regulation device in tradition.
Fig. 2 is the schematic diagram of the liquid level regulation device according to one embodiment of the present invention.
Fig. 3 is the schematic diagram of the control loop of the liquid level regulation device shown in Fig. 2.
Description of reference numerals of the present invention
1 hand stop valve; 2 first pipelines; 3 flow control valves; 4 liquid feeding pipelines; 5 main valves; 51 control rooms; 52 valves; 6 ball float pilot valves; 7 second pipelines; 8 ball floats; 9 liquid storage devices; 10 gas circuits; 11 automatically controlled on-off valves; 12 transmitters; 13 level meters; 14 filters; 15 automatic circuits; 16 manual circuits; 17 selector switches; 18 transmitter output switchs.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
See Fig. 2, Figure 2 shows that the schematic diagram of the liquid level regulation device according to one embodiment of the present invention, according to an aspect of the present invention, a kind of liquid level regulation device is provided, comprises: for being connected to the main valve 5 in liquid feeding pipeline 4; For the control gear of control bound 5; For measuring the level meter 13 of the liquid level of liquid storage device 9; And transmitter 12, this transmitter 12 is connected electrically between level meter 13 and described control gear, and the liquid level signal that level meter 13 is measured is converted into control signal through transmitter 12, and this transmitter 12 sends described control signal to described control gear.
Pass through technique scheme, after liquid level measured by level meter 13, liquid level signal is sent to transmitter 12, control signal is converted into by transmitter 12, and described control signal is sent to control gear, described control gear carrys out opening of control bound 5 or closed according to described control signal, level meter 13 can reflect the concrete liquid level of liquid storage device 9 intuitively, and level meter 13 can select appropriate location according to actual needs in the mounting point of liquid storage device 9, such as, the ingress of liquid storage device 9 upper end, inwall is first-class, make level meter 13 can measure liquid level in liquid storage device 9, be convenient to the taking-up maintenance of level meter 13, simultaneously can according to actual needs to control gear setting liquid level return difference, avoid the frequent movement of main valve 5.
Control point control bound 5 can opened to control gear setting liquid level return difference or close becomes control section, namely the liquid level of liquid storage device 9 does not exceed described control section, main valve 5 would not action, avoid the liquid level of liquid storage device 9 liquid level warning is on weekly duty enclose fluctuation change time main valve 5 do not stop to open, closed, control gear and main valve 5 are caused damage.
See Fig. 2, liquid feeding pipeline 4 is still provided with hand stop valve 1 and filter 14, hand stop valve 1 can when described fluid level control device breaks down manual shutoff liquid feeding pipeline 4, avoid the overflow in liquid storage device 9, pollute working environment and cause economic loss, filter 14 can filter the impurity in the liquid that liquid feeding pipeline 4 provides.
Main valve 5 can select suitable form according to actual needs, such as, and pneumatic stopping valve, Electric Actuated Stop Valves etc.
The model of transmitter 12 also can suitably be selected according to actual needs, meets that liquid level signal is converted into can the control signal of controlled device identification.
The form of described control gear can suitably design according to actual needs, meets the demand of control bound 5.Such as, transmitter 12 is electrically connected with the coil of relay, receive to make the coil of relay the electrical signal that transmitter 12 exports and electric or dead electricity, thus the contact of control relay opens or closes, thus by the valve of Control main valve 5 opening or closed; Or transmitter 12 is connected with PLC, PLC opening or closing according to the control circuit at control signal control bound 5 place.
The control signal voltage exported due to common transmitter 12 is lower, the relay that valve as directly controlled main valve 5 connects easily causes relay power lower slow in one's movements, relay cannot quick closedown or open described valve and even cannot cut out or open described valve completely, drives the electrical control unit such as relay again after usually needing to amplify control signal by amplification circuit.
Preferably, described control gear comprises control circuit and is connected to the automatically controlled on-off valve 11 of described control circuit, transmitter 12 is electrically connected with described control circuit by transmitter output switch 18, transmitter output switch 18 is electrically connected on transmitter 12 and opens or closes can respond described control signal, thus controls the break-make of described control circuit.
By the break-make of the higher control circuit of the control signal control voltage that the voltage of transmitter 12 is lower make the valve of main valve 5 can according to the energising of automatically controlled on-off switch 11 or power-off fast and reliable opening or closed.
The form of transmitter output switch 18 can carry out suitable design according to actual needs, needed for transmitter output switch 18, driving force is little compared with the valve of main valve 5, lower powered relay or solenoid valve and the combination etc. of switch handle of magnetic absorption generally can meet user demand.
Described control circuit can carry out suitable design according to actual needs.
See Fig. 3, preferably, the two ends of described control circuit can be electrically connected on power line, described control circuit is provided with selector switch 17, parallel circuit unit and automatically controlled on-off valve 11, described parallel circuit unit comprises automatic circuit 15 parallel with one another and manual circuit 16, transmitter output switch 18 is arranged on automatic circuit 15 to control the break-make of this automatic circuit 15, selector switch 17 can at automated location, manual position and off position switch, wherein at described automated location, the contact electrical connection automatic circuit 15 of described selector switch 17, in described manual position, the contact of selector switch 17 is electrically connected manual circuit 16, all disconnect at the contact of described off position selector switch 17 and automatic circuit 15 and manual circuit 16.
By above-mentioned control gear, main valve 5 is opened or is closed under the control of automatically controlled on-off valve 11, and the control mode of automatically controlled on-off valve 11 can also can control by Non-follow control automatically, can select control mode flexibly according to actual needs during use.
Automatically controlled on-off valve 11 can select suitable valve as required, such as, and mortor operated valve, solenoid valve etc.
Preferably, described control gear also comprises source of the gas, and main valve 5 is Pneumatic control type main valve, and this main valve 5 comprises the control room 51 opened or closed for controlling this main valve 5, described source of the gas is connected with control room 51, and automatically controlled on-off valve 11 is arranged in the gas circuit 10 between described source of the gas and control room 51.
Pneumatic control main valve long service life and stable failure rate is low, the switching speed of valve can adjust, structure is simple, easy care, because of the damping characteristics of gas itself in course of action, valve not easily damages because blocking, and pneumatic returning can be applicable to the higher occasion of temperature and inflammable and explosive occasion.
See Fig. 2, preferably, the gas circuit 10 between described source of the gas and control room 51 is also provided with flow control valve 3.
By the switching speed of the valve of the adjustable main valve 5 of adjust flux modulating valve 3.
The form in the control room 51 of main valve 5 can select the mode of fitting according to actual needs, such as, in fluid level control device shown in Fig. 1, the control room 51 of main valve 5 has a chamber, the valve of main valve 5 is provided with Returnning spring, exits in control room 51, and described valve automatically resets.
Preferably, control room 51 comprises the first chamber and the second chamber, and when described first chamber air inlet, the second chamber venting, main valve 5 performs closing motion, and when described first chamber venting, the second chamber air inlet, main valve 5 performs opening action.
The action of the valve of main valve 5 needs described first chamber and the second chamber cooperation to complete, when side cavity's fault or source of the gas disconnect suddenly, the position of described valve remains unchanged, and compared with single chamber control room, the control room of dual cavity makes the action of the valve of main valve 5 more steady.
Preferably, level meter 13 is ultrasonic level gage.
Ultrasonic level gage by sound wave transmitting and receiving between time calculate the distance of level meter to fluid to be measured surface, owing to adopting non-contacting measurement, measured medium is restricted hardly, can be widely used in the measurement of various liquid and solid material height.
According to another aspect of the present invention, a kind of level regulating method is provided, comprises: first, measured the liquid level of liquid storage device 9 by level meter 13; Then, liquid level signal is sent to transmitter 12 by level meter 13, by transmitter 12, described liquid level signal is converted into control signal; Finally, described control signal is sent to control gear, is controlled the described main valve 5 be arranged on liquid feeding pipeline 4 by described control gear.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. a liquid level regulation device, is characterized in that, comprising:
For being connected to the main valve (5) in liquid feeding pipeline (4);
For controlling the control gear of described main valve (5);
For measuring the level meter (13) of the liquid level of liquid storage device (9); And
Transmitter (12), this transmitter (12) is connected electrically between described level meter (13) and described control gear, the liquid level signal that described level meter (13) is measured is converted into control signal through described transmitter (12), and this transmitter (12) sends described control signal to described control gear.
2. liquid level regulation device according to claim 1, it is characterized in that, described control gear comprises control circuit and is connected to the automatically controlled on-off valve (11) of described control circuit, described transmitter (12) is electrically connected with described control circuit by described transmitter output switch (18), described transmitter output switch (18) is electrically connected on described transmitter (12) and opens or closes can respond described control signal, thus controls the break-make of described control circuit.
3. liquid level regulation device according to claim 2, it is characterized in that, the two ends of described control circuit can be electrically connected on power line, described control circuit is provided with selector switch (17), parallel circuit unit and automatically controlled on-off valve (11), described parallel circuit unit comprises automatic circuit (15) parallel with one another and manual circuit (16), described transmitter output switch (18) is arranged on described automatic circuit (15) to control the break-make of this automatic circuit (15), described selector switch (17) can at automated location, manual position and off position switch, wherein at described automated location, the contact of described selector switch (17) is electrically connected described automatic circuit (15), in described manual position, the described manual circuit (16) of contact electrical connection of described selector switch (17), described in described off position, the contact of selector switch (17) and described automatic circuit (15) and manual circuit (16) all disconnect.
4. liquid level regulation device according to claim 2, it is characterized in that, described control gear also comprises source of the gas, described main valve (5) is Pneumatic control type main valve, this main valve (5) comprises the control room (51) opened or closed for controlling this main valve (5), described source of the gas is connected with described control room (51), and described automatically controlled on-off valve (11) is arranged in the gas circuit (10) between described source of the gas and described control room (51).
5. liquid level regulation device according to claim 4, is characterized in that, the gas circuit (10) between described source of the gas and described control room (51) is also provided with flow control valve (3).
6. liquid level regulation device according to claim 4, it is characterized in that, described control room (51) comprises the first chamber and the second chamber, when described first chamber air inlet, the second chamber venting, described main valve (5) performs closing motion, when described first chamber venting, the second chamber air inlet, described main valve (5) performs opening action.
7. the liquid level regulation device according to any one of claim 1-6, is characterized in that, described level meter (13) is ultrasonic level gage.
8. a level regulating method, is characterized in that, comprising:
First, the liquid level of liquid storage device (9) is measured by level meter (13);
Then, liquid level signal is sent to transmitter (12) by described level meter (13), by described transmitter (12), described liquid level signal is converted into control signal;
Finally, described control signal is sent to control gear, is controlled the described main valve (5) be arranged on liquid feeding pipeline (4) by described control gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532861.4A CN104344048A (en) | 2014-10-10 | 2014-10-10 | Liquid level regulating device and liquid level regulating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532861.4A CN104344048A (en) | 2014-10-10 | 2014-10-10 | Liquid level regulating device and liquid level regulating method |
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| CN104344048A true CN104344048A (en) | 2015-02-11 |
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| CN201410532861.4A Pending CN104344048A (en) | 2014-10-10 | 2014-10-10 | Liquid level regulating device and liquid level regulating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676080A (en) * | 2015-02-13 | 2015-06-03 | 江苏新美星包装机械股份有限公司 | Liquid level regulating control device |
| CN112113633A (en) * | 2020-09-04 | 2020-12-22 | 上海水顿智能科技有限公司 | Online liquid level monitoring automatic alarm method, system and equipment |
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| JPH05118465A (en) * | 1991-03-26 | 1993-05-14 | F M Valve Seisakusho:Kk | Valve control device for waterworks |
| JPH0926051A (en) * | 1995-07-12 | 1997-01-28 | Toshiba Eng Co Ltd | Motor-driven regulating valve controller |
| CN201903047U (en) * | 2011-03-31 | 2011-07-20 | 广州大学城华电新能源有限公司 | Liquid level regulating device of boiler drum |
| CN102563188A (en) * | 2010-12-20 | 2012-07-11 | 西安航天远征流体控制股份有限公司 | Pneumatic residual cake valve |
| CN202361064U (en) * | 2011-09-29 | 2012-08-01 | 赤峰瑞阳化工有限公司 | Steam trap used for steam-water two-phase separation |
| CN202510792U (en) * | 2012-04-17 | 2012-10-31 | 常州汉腾自动化设备有限公司 | Smart liquid level regulating valve with LCD (Liquid Crystal Display) |
| CN103127738A (en) * | 2013-02-18 | 2013-06-05 | 陕西科技大学 | Double-layer flash tank |
| CN204153272U (en) * | 2014-10-10 | 2015-02-11 | 中国神华能源股份有限公司 | Liquid level regulation device |
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| JPH05118465A (en) * | 1991-03-26 | 1993-05-14 | F M Valve Seisakusho:Kk | Valve control device for waterworks |
| JPH0926051A (en) * | 1995-07-12 | 1997-01-28 | Toshiba Eng Co Ltd | Motor-driven regulating valve controller |
| CN102563188A (en) * | 2010-12-20 | 2012-07-11 | 西安航天远征流体控制股份有限公司 | Pneumatic residual cake valve |
| CN201903047U (en) * | 2011-03-31 | 2011-07-20 | 广州大学城华电新能源有限公司 | Liquid level regulating device of boiler drum |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676080A (en) * | 2015-02-13 | 2015-06-03 | 江苏新美星包装机械股份有限公司 | Liquid level regulating control device |
| CN104676080B (en) * | 2015-02-13 | 2018-03-23 | 江苏新美星包装机械股份有限公司 | A kind of liquid level control set for adjusting |
| CN112113633A (en) * | 2020-09-04 | 2020-12-22 | 上海水顿智能科技有限公司 | Online liquid level monitoring automatic alarm method, system and equipment |
| CN112113633B (en) * | 2020-09-04 | 2023-11-14 | 上海水顿智能科技有限公司 | Automatic alarm method, system and equipment for online liquid level monitoring |
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