CN107843318A - A kind of liquid level gauge Endurance life test device and method - Google Patents
A kind of liquid level gauge Endurance life test device and method Download PDFInfo
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- CN107843318A CN107843318A CN201711378403.XA CN201711378403A CN107843318A CN 107843318 A CN107843318 A CN 107843318A CN 201711378403 A CN201711378403 A CN 201711378403A CN 107843318 A CN107843318 A CN 107843318A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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Abstract
The present invention provides a kind of liquid level gauge Endurance life test device and method, including interior liquid bath, outer liquid bath, liquid back pipe road, drain pipe road, liquid-level switch, counter and controller；Ball float continous way liquid level gauge is installed in interior liquid bath；First liquid-level switch is arranged on position contour with the action upper limit position of liquid level gauge in interior liquid bath, and the second liquid-level switch is arranged on position contour with the action lower position of liquid level gauge in interior liquid bath；The first end on liquid back pipe road is stretched into interior liquid bath, and its second end is arranged between the outer wall of interior liquid bath and the inwall of outer liquid bath, and liquid back pipe road is provided with back liquid liquid pump；Drain pipe road is connected to interior liquid bath, and drain pipe road is provided with valve and goes out liquid liquid pump；Two liquid-level switches, liquid liquid pump is returned, goes out liquid liquid pump, valve and counter and is electrically connected with the controller.The device and Endurance life test for ball float continous way liquid level gauge can be realized in the Endurance life test method that the device is carried out, the efficiency and reliability that it is tested is higher.
Description
Technical field
The present invention relates to a kind of liquid level gauge Endurance life test device and test method.
Background technology
With developing rapidly for electromechanical integration technology, ball float continous way liquid level gauge obtains more and more extensive use, main
To be applied to the industries such as oil, chemical industry, electric power, light industry and medicine.In order to improve the use reliability of ball float continous way liquid level gauge,
A series of checking test must be carried out, wherein Endurance life test uses the longevity for determining product under regulation use condition
Life, problem be present in terms of which parts reliability so as to find out in product design manufacture, to be improved design or to improve work
Skill is horizontal.Currently without the long duration test life-span device for ball float continous way liquid level gauge, thus it is necessary to design a set of special
Experimental rig could meet the needs of experiment.
The content of the invention
Based on this, it is an object of the invention to provide a kind of liquid level gauge Endurance life test device, the device can be realized
For the Endurance life test of ball float continous way liquid level gauge, the efficiency and reliability that it is tested is higher.
The technical scheme is that：A kind of liquid level gauge Endurance life test device, including interior liquid bath, outer liquid bath, time liquid
Pipeline, drain pipe road, the first liquid-level switch, the second liquid-level switch, counter and controller；The interior liquid bath is located at described outer
The inside of liquid bath, and the interior liquid bath is provided with the installation position for being used for installing ball float continous way liquid level gauge；First liquid-level switch
It is installed in second liquid-level switch in the interior liquid bath, and first liquid-level switch is arranged on and the liquid level gauge
The contour position of upper limit position is acted, second liquid-level switch is arranged on contour with the action lower position of the liquid level gauge
Position；The first end on the liquid back pipe road stretches into the inside of the interior liquid bath, and second end on the liquid back pipe road is arranged on described
Between the inwall of the outer wall of interior liquid bath and the outer liquid bath, and the liquid back pipe road is provided with back liquid liquid pump；The drain pipe road
The interior liquid bath is connected to, and the drain pipe road is provided with valve and goes out liquid liquid pump；First liquid-level switch, described second
Liquid-level switch, described time liquid liquid pump, it is described go out liquid liquid pump, the valve and the counter be electrically connected respectively with the controller
Connect.
Optionally, the liquid back pipe road is provided with back flow meters, and described time flow meters electrically connect with the controller.
Optionally, the liquid back pipe road is set at least two, and described time liquid liquid is equipped with each liquid back pipe road
Pump and described time flow meters.
Optionally, the drain pipe road is provided with out flow meters, it is described go out flow meters electrically connected with the controller.
Optionally, the outside of the ball float continous way liquid level gauge is provided with anti-wave tube.
Optionally, the valve is gate valve.
The present invention also provides a kind of liquid level gauge endurance life examination carried out using above-mentioned liquid level gauge Endurance life test device
Proved recipe method, comprises the following steps：
Step S1:Ball float continous way liquid level gauge is arranged in the installation position of interior liquid bath, and set on counter into
The action frequency of liquid level gauge required for row experiment；
Step S2：Appropriate liquid is injected in outer liquid bath, and starts back liquid liquid pump by the liquid of outer liquid bath by returning liquid
Pipeline is injected into interior liquid bath, the ball float of ball float continous way liquid level gauge is followed liquid level in interior liquid bath to action upper limit position
Float in direction；
Step S3：First liquid-level switch is then closed in the height where the liquid level in detecting interior liquid bath reaches it
Merge to controller and export closure signal, controller is after the closure signal of first liquid-level switch is received, described in control
Return liquid liquid pump to shut down, stop the inside liquid bath injection liquid of outer liquid bath, and then the ball float of float-ball type continous way liquid level gauge is temporarily stopped
Stay in action upper limit position；
Step S4：Controller control valve door is opened with liquid liquid pump is gone out, and the liquid in interior liquid bath is flowed out by drain pipe road
Into outer liquid bath, the liquid level in interior liquid bath is constantly declined, and then make the ball float of ball float continous way liquid level gauge by action upper limit
Put to the movement of action lower position, the first liquid-level switch then to enter in the height where the liquid level in detecting interior liquid bath leaves it
Row disconnects, and exports cut-off signal to the controller；
Step S5：Second liquid-level switch is then carried out in the height where the liquid level in detecting interior liquid bath drops to it
Close and export closure signal to controller, controller controls institute after the closure signal of second liquid-level switch is received
State and go out the shutdown of liquid liquid pump described in valve closing and control, stop liquid flows out to outer liquid bath from interior liquid bath, and then connects ball float
The ball float temporal persistence of continuous formula liquid level gauge is in action lower position；
Step S6：Controller controls back liquid liquid pump to open, and the liquid of outer liquid bath is injected into interior liquid bath by liquid back pipe road
In, the ball float of ball float continous way liquid level gauge is followed the liquid level in interior liquid bath from acting lower position to the side of action upper limit position
To floating, the second liquid-level switch then disconnects in the height where the liquid level in detecting interior liquid bath leaves it, and to the control
Device processed exports cut-off signal；
Step S7：Repeat step S3 to step S6；Wherein, controller often receives once closing for first liquid-level switch
After a closure signal and a cut-off signal for closing signal and a cut-off signal and second liquid-level switch, then control
The counter is once counted；When the counter increases to the action time of the liquid level gauge set thereon by zero
Number, or when the counter is decreased to zero by the action frequency of the liquid level gauge set thereon, stop experiment.
Further, the action frequency of the liquid level gauge is moved for the ball float of ball float continous way liquid level gauge by action upper limit position
The number of action upper limit position is returned to after moving to action lower position, or the action frequency of the liquid level gauge is that ball float is continuous
The ball float of formula liquid level gauge is moved to after action upper limit position the number for being returned to action lower position by action lower position.
Further, in test, according to changing the reading for returning flow meters and/or going out flow meters read
Return liquid liquid pump and it is described go out liquid liquid pump power, to adjust the speed of actions of the ball float of ball float continous way liquid level gauge.
Further, in test, by adjusting back liquid liquid pump and going out liquid liquid pump, use and go out flow meters on liquid pipeline
On flow reading with each liquid back pipe road return flow meters flow reading summation it is equal.
Implement the embodiment of the present invention, have the advantages that：
The circulation that the liquid level gauge Endurance life test device of the present invention passes through the progress liquid between outer liquid bath and interior liquid bath
Flow to realize automatically adjusting for the liquid level in interior liquid bath, and then the ball float of ball float continous way liquid level gauge is followed the liquid of interior liquid bath
Position between action upper limit position and action lower position continuously move back and forth, then by returning liquid liquid pump, going out liquid
The cooperation of liquid pump, valve and counter, the number moved repeatedly is set to reach the number required for test determination, thus can be real
Referring now to the Endurance life test of the ball float continous way liquid level gauge, its reliability tested and efficiency are higher.Wherein, setting is passed through
First liquid-level switch and second liquid-level switch, automatically adjusting for the liquid level scope in interior liquid bath can be achieved.
The liquid level gauge Endurance life test device of the present invention sets back flow meters on liquid back pipe road, on drain pipe road
Flow meters are set out, thus, according to reading back flow meters and/or going out the reading of flow meters, can adjust back liquid liquid pump and
Go out the variable quantity of the power of liquid liquid pump, and then the automatic of the speed of actions of the ball float for ball float continous way liquid level gauge can be realized
Regulation, thus, it is possible to rationally be set to the speed of actions of the liquid level gauge according to the needs of experiment.
The liquid level gauge Endurance life test method of the present invention is carried out based on the liquid level gauge Endurance life test device, the examination
The reliability and efficiency of proved recipe method are higher.
Brief description of the drawings
Fig. 1 is the structural representation of the liquid level gauge Endurance life test device described in the embodiment of the present invention.
Description of reference numerals：
1st, interior liquid bath, 2, outer liquid bath, the 3, first liquid back pipe road, 301, first times flow meters, 302, first times liquid liquid pumps,
4th, the second liquid back pipe road, 401, second times flow meters, 402, second times liquid liquid pumps, 5, drain pipe road, 501, go out flow meters,
502nd, liquid liquid pump is gone out, 503, gate valve, the 6, first liquid-level switch, the 7, second liquid-level switch, 8, counter, 9, ball float continous way liquid level
Meter, 10, anti-wave tube.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
In the description of the invention, it is to be understood that the instruction such as term " on ", " under ", "left", "right", " top ", " bottom "
Orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplification retouched
State, rather than instruction or imply signified device or element there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
Referring to Fig. 1, the present embodiment provides a kind of liquid level gauge Endurance life test device, it include interior liquid bath 1, outer liquid bath 2,
Liquid back pipe road, drain pipe road 5, the first liquid-level switch 6, the second liquid-level switch 7, counter 8 and controller (not shown)；
Interior liquid bath 1 is located at the inside of outer liquid bath 2, and interior liquid bath 1 is provided with the installation position for being used for installing ball float continous way liquid level gauge 9；First
The liquid-level switch 7 of liquid-level switch 6 and second is installed in interior liquid bath 1, and the first liquid-level switch 6 is installed in dynamic with liquid level gauge 9
Make the contour position of upper limit position, the second liquid-level switch 7 is arranged on the position contour with the action lower position of liquid level gauge 9；Return
The first end of liquid pipeline stretches into the inside of interior liquid bath 1, and second end on liquid back pipe road is arranged on the outer wall and outer liquid bath 2 of interior liquid bath 1
Inwall between, and liquid back pipe road is provided with back liquid liquid pump；Drain pipe road 5 is connected to the bottom of interior liquid bath 1, and drain pipe road 5
It is provided with valve and goes out liquid liquid pump 502；First liquid-level switch 6, the second liquid-level switch 7, return liquid liquid pump, go out liquid liquid pump 502, valve
It is electrically connected with the controller respectively with counter 8.
The liquid level gauge Endurance life test device between outer liquid bath 2 and interior liquid bath 1 by carrying out circulating for liquid
To realize automatically adjusting for the liquid level in interior liquid bath 1, and then the ball float of ball float continous way liquid level gauge 9 is set to follow the liquid of interior liquid bath 1
Position between action upper limit position and action lower position continuously move back and forth, then by returning liquid liquid pump, going out liquid
The cooperation of liquid pump 502, valve and counter 8, the above-mentioned number moved repeatedly can be made to reach the number required for test determination, by
This can realize the Endurance life test for the ball float continous way liquid level gauge 9, and its reliability tested and efficiency are higher.Wherein,
By setting the first liquid-level switch 6 and the second liquid-level switch 7, automatically adjusting for the liquid level scope in interior liquid bath 1 can be achieved.
Wherein, liquid back pipe road is set to two, and two liquid back pipe roads can be designated as the first liquid back pipe road 3 and second time liquid respectively
Pipeline 4, accordingly, return liquid liquid pump and be also set to two, this two are returned liquid liquid pump and can be designated as first time liquid liquid pump 302 and second respectively
Return liquid liquid pump 402, the first liquid back pipe road 3 and the second liquid back pipe road 4 are divided into the both sides of interior liquid bath 1, and the first liquid back pipe road 3
First end and the first end on the second liquid back pipe road 4 stretch into the inside of interior liquid bath 1, second end and second on the first liquid back pipe road 3
Second end on liquid back pipe road 4 is arranged between the outer wall of interior liquid bath 1 and the inwall of outer liquid bath 2, and the first liquid back pipe road 3 is provided with
Above-mentioned first time flow meters 301 and above-mentioned first time liquid liquid pump 302, the second liquid back pipe road 4 are provided with above-mentioned second time liquid stream
Gauge 401 and above-mentioned second time liquid liquid pump 402, the flow meters of liquid liquid pump 402, first times of first time liquid liquid pump 302, second times
301st, second time flow meters 401 is electrically connected with the controller respectively.It is pointed out that the quantity on the liquid back pipe road of the present embodiment
Two or more is may be alternatively provided as, accordingly, above-mentioned time liquid liquid pump and above-mentioned time flow meters are equipped with each liquid back pipe road.Separately
Outside, the drain pipe road 5 of the present embodiment is provided with out flow meters 501, and this goes out flow meters 501 and is also electrically connected with controller noted above
Connect.Thus, it can adjust back liquid liquid pump by reading back flow meters and/or going out the reading of flow meters 501 and go out liquid liquid pump
The variable quantity of 502 power, and then the automatic tune of the speed of actions of the ball float for ball float continous way liquid level gauge 9 can be realized
Section, so as to according to the needs of experiment rationally set for above-mentioned speed of actions.There is also the need to explanation,
" the action upper limit position " of the present embodiment specifically refers to liquid level gauge 9 after above-mentioned installation position is installed on, the ball float of the liquid level gauge 9 to
The extreme higher position that upper movement can reach, and " the action lower position " of the present embodiment specifically refer to liquid level gauge be installed on it is above-mentioned
Behind installation position, the ball float of the liquid level gauge moves down the extreme lower position that can reach.
In addition, the outside of the ball float continous way liquid level gauge 9 of the present embodiment is provided with anti-wave tube 10, so as in actual tests mistake
The disturbance of current can be eliminated in journey.And the valve of the present embodiment is gate valve 503, can facilitate for liquid flow in drain pipe road 5
Dynamic control.
The present embodiment also provides a kind of liquid level gauge Endurance life test method based on above-mentioned liquid level gauge endurance life device,
The test method comprises the following steps：
Step S1:Ball float continous way liquid level gauge 9 is arranged in the installation position of interior liquid bath 1, and set on counter 8
Test the action frequency of required liquid level gauge；
Step S2：The appropriate liquid of injection in outer liquid bath 2, and start first time liquid liquid pump 302 and second time liquid liquid pump
402 are injected into the liquid of outer liquid bath 2 in interior liquid bath 1 by the first liquid back pipe road 3 and the second liquid back pipe road 4, make ball float continuous
The ball float of formula liquid level gauge 9 follows the liquid level in interior liquid bath 1 to be floated to the direction of action upper limit position；
Step S3：First liquid-level switch 6 is then carried out in the height where the liquid level in detecting interior liquid bath 1 reaches it
Close and export closure signal to controller, controller controls institute after the closure signal of first liquid-level switch 6 is received
The shutdown of liquid liquid pump is stated back, stops the inside liquid bath 1 of outer liquid bath 2 and injects liquid, and then make the ball float of ball float continous way liquid level gauge 9 temporary transient
Rest on action upper limit position；
Step S4：Controller control gate valve 503 and go out liquid liquid pump 502 and open, the liquid in interior liquid bath 1 is passed through into drain pipe
Road 5 is flowed out in outer liquid bath 2, the liquid level in interior liquid bath 1 is constantly declined, and the ball float of ball float continous way liquid level gauge 9 is by action
Extreme position moves to action lower position, height of first liquid-level switch 6 where the liquid level in detecting interior liquid bath 1 leaves it
When then disconnect, and to the controller export cut-off signal；
Step S5：Second liquid-level switch 7 then enters in the height where the liquid level in detecting interior liquid bath 1 drops to it
Row closure simultaneously exports closure signal to controller, and controller is after the closure signal of second liquid-level switch 7 is received, control
Gate valve 503 is closed and controls out liquid liquid pump 502 to shut down, and stop liquid flows out to outer liquid bath 2 from interior liquid bath 1, and then makes ball float
The ball float temporal persistence of continous way liquid level gauge 9 is in action lower position；
Step S6：Controller controls first time liquid liquid pump 302 and second time liquid liquid pump 402 to open, by the liquid of outer liquid bath 2
It is injected into by the first liquid back pipe road 3 and the second liquid back pipe road 4 in interior liquid bath 1, follows the ball float of ball float continous way liquid level gauge 9
Liquid level in interior liquid bath 1 is floated from action lower position to the direction of action upper limit position, and the second liquid-level switch 7 is in detecting
Liquid level in liquid bath 1 then disconnects when leaving the height where it, and exports cut-off signal to the controller；
Step S7：Controller is receiving a closure signal of the first liquid-level switch 6 and a cut-off signal and
After closure signal of two liquid-level switches 7 and a cut-off signal, the counter 8 is controlled once to be counted；
Step S8：Repeat step S3 to step S7, until counter 8 is decreased to by the action frequency set thereon
Zero.
Wherein, liquid used in the test method of the present embodiment can use water.And the action frequency of above-mentioned liquid level gauge
For ball float continous way liquid level gauge 9 ball float by action upper limit position be moved to action lower position after be returned to action upper limit position
Number, or the liquid level gauge action frequency for ball float continous way liquid level gauge 9 ball float by act lower position be moved to
The number of action lower position is returned to after action upper limit position.It is pointed out that the action of so-called liquid level gauge refers to this
The action of the ball float of ball float continous way liquid level gauge 9.
In the experiment of the present embodiment, by adjusting first time liquid liquid pump, 302, second times liquid liquid pumps 402 and going out liquid liquid pump
502, make second time liquid on the flow reading and the second liquid back pipe road 4 of first time flow meters 301 on the first liquid back pipe road 3
The summation of the flow reading of flowmeter 401 is equal with the flow reading gone out on flow meters 501 on drain pipe road 5, so as to energy
Enough make the speed of actions for coming and going action above and below the ball float of liquid level gauge in both direction identical, to further ensure that the reliable of experiment
Property.Certainly, when the quantity on liquid back pipe road is two or more, then make on each liquid back pipe road return flow meters flow reading it
It is equal with the flow reading for going out flow meters 501 on drain pipe road 5.
In the experiment of the present embodiment, it can be read according to the flow for returning flow meters and/or going out flow meters 501 read
Number changes back liquid liquid pump and goes out the power of liquid liquid pump 502, to adjust the speed of actions of the ball float of ball float continous way liquid level gauge 9.Tool
For body, time T and the flow reading L of first time flow meters 301 that liquid level gauge acts every time1, second time flow meters 401
Flow reading L2Between following relation be present：
T=[2*S* (h1-h2)*103*60]/(L1+L2)；
In formula, T represents time (the unit s), h that liquid level gauge acts every time1Represent that the height of the first liquid-level switch 6 is (single
Position is cm), h2Represent the height (unit cm) of the second liquid-level switch 7, L1Represent the flow reading of first time flow meters 301
(unit L/min), L2Represent the reading (unit L/min) of second time flow meters 401；Thus, by reading first time
The flow reading L of flow meters 3011With the flow reading L of second time flow meters 4012It can obtain what liquid level gauge acted every time
Time T, and then the distance divided by time T that the ball float of liquid level gauge is acted every time, you can obtain the action of the ball float of liquid level gauge
Speed, so as to according to the flow reading L of the first time flow meters 301 read1With the reading L of second time flow meters 4012
To adjust the power of first time liquid liquid pump 302 and second time liquid liquid pump 402, make the flow reading L of first time flow meters 3011
With the reading L of second time flow meters 4012Sum is suitable numerical value, you can ensures that the speed of actions of liquid level gauge is in experiment
Speed of actions required for test determination, with this can lifting test reliability.In the present embodiment, due to first time flow quantity
The flow reading L of meter 3011With the flow reading L of second time flow meters 4012Sum is also equal to out the flow of flow meters 501
Reading, thus, also the adjustment of above-mentioned speed of actions can be carried out according to the flow reading for going out flow meters 501 of reading.
It is pointed out that in step S7 and S8, the counting mode of counter 8 can also use incremental count, so as to, when
When the action frequency of the liquid level gauge set thereon is increased to by zero by the counting of counter 8, then stop experiment.In addition,
It is noted that in the present embodiment, the process of the first time action of the ball float of liquid level gauge is from action upper limit position movement
To action lower position after again return action upper limit position；In fact, in other embodiments, the ball float of liquid level gauge is dynamic for the first time
The process of work can also be moved to after action upper limit position return action upper limit position again from action lower position, so as to,
In such embodiment, the time point that counter 8 counts can adjust accordingly, but nonetheless, the counting of counter 8
All it is a closure signal and a cut-off signal and described for receiving first liquid-level switch 6 every time in controller
Once counted after closure signal of two liquid-level switches 7 and a cut-off signal, i.e. the first liquid-level switch 6 often closes,
Disconnect once and the second liquid-level switch 7 is often closed, disconnected once, counter 8 is then once counted.
In the liquid level gauge endurance test method of the embodiment of the present invention, the ball float of liquid level gauge can be realized continuously to be moved repeatedly
Make, by the effect of the first liquid-level switch 6 and the second liquid-level switch 7, the automatic tune of liquid level scope in interior liquid bath 1 can be realized
Section, and by above-mentioned time flow meters, go out flow meters 501 and above-mentioned first liquid pump, the effect of the second liquid pump and can realize liquid
The adjustment of the speed of actions of the ball float of position meter, therefore, be advantageous to the efficiency of lifting test and the reliability of experiment.
It should be appreciated that various information, but these information are described using term " first ", " second " etc. in the present invention
These terms are should not necessarily be limited by, these terms are only used for same type of information being distinguished from each other out.For example, the present invention is not being departed from
In the case of scope, " first " information can also be referred to as " second " information, similar, and " second " information can also be referred to as
" first " information.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvement and deformation can also be made, these are improved and deformation is also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of liquid level gauge Endurance life test device, it is characterised in that including interior liquid bath, outer liquid bath, liquid back pipe road, drain pipe
Road, the first liquid-level switch, the second liquid-level switch, counter and controller；
The interior liquid bath is located at the inside of the outer liquid bath, and the interior liquid bath is provided with and is used to install ball float continous way liquid level gauge
Installation position；
First liquid-level switch and second liquid-level switch are installed in the interior liquid bath, and first liquid-level switch
The position contour installed in the action upper limit position with the liquid level gauge, second liquid-level switch are arranged on and the liquid level gauge
The contour position in action lower position；
The first end on the liquid back pipe road stretches into the inside of the interior liquid bath, and second end on the liquid back pipe road is arranged in described
Between the inwall of the outer wall of liquid bath and the outer liquid bath, and the liquid back pipe road is provided with back liquid liquid pump；
The drain pipe road is connected to the interior liquid bath, and the drain pipe road is provided with valve and goes out liquid liquid pump；
First liquid-level switch, second liquid-level switch, described time liquid liquid pump, it is described go out liquid liquid pump, the valve and institute
Counter is stated to electrically connect with the controller respectively.
2. liquid level gauge Endurance life test device according to claim 1, it is characterised in that the liquid back pipe road is provided with
Flow meters are returned, described time flow meters electrically connect with the controller.
3. liquid level gauge Endurance life test device according to claim 2, it is characterised in that the liquid back pipe road be set to
It is few two, and described time liquid liquid pump and described time flow meters are equipped with each liquid back pipe road.
4. liquid level gauge Endurance life test device according to claim 1, it is characterised in that the drain pipe road is provided with
Go out flow meters, it is described go out flow meters electrically connected with the controller.
5. liquid level gauge Endurance life test device according to claim 1, it is characterised in that the ball float continous way liquid level
The outside of meter is provided with anti-wave tube.
6. liquid level gauge Endurance life test device according to claim 1, it is characterised in that the valve is gate valve.
7. the liquid level gauge durable longevity that a kind of any one of usage right requirement 1 to the 6 liquid level gauge Endurance life test device is carried out
Order test method, it is characterised in that comprise the following steps：
Step S1:Ball float continous way liquid level gauge is arranged in the installation position of interior liquid bath, and is set for trying on counter
The action frequency of liquid level gauge required for testing；
Step S2：Appropriate liquid is injected in outer liquid bath, and starts back liquid liquid pump and the liquid of outer liquid bath is passed through into liquid back pipe road
It is injected into interior liquid bath, the ball float of ball float continous way liquid level gauge is followed liquid level in interior liquid bath to the direction of action upper limit position
Float；
Step S3：First liquid-level switch is then closed simultaneously in the height where the liquid level in detecting interior liquid bath reaches it
Closure signal is exported to controller, for controller after the closure signal of first liquid-level switch is received, control is described to return liquid
Liquid pump is shut down, and stops the inside liquid bath injection liquid of outer liquid bath, and then the ball float temporal persistence of float-ball type continous way liquid level gauge is existed
Act upper limit position；
Step S4：Controller control valve door is opened with liquid liquid pump is gone out, and the liquid in interior liquid bath is flowed out to outside by drain pipe road
In liquid bath, the liquid level in interior liquid bath is constantly declined, so make the ball float of ball float continous way liquid level gauge from action upper limit position to
Lower position movement is acted, the first liquid-level switch is then broken in the height where the liquid level in detecting interior liquid bath leaves it
Open, and cut-off signal is exported to the controller；
Step S5：Second liquid-level switch is then closed in the height where the liquid level in detecting interior liquid bath drops to it
And closure signal is exported to controller, controller controls the valve after the closure signal of second liquid-level switch is received
Door goes out the shutdown of liquid liquid pump described in closing and controlling, and stop liquid flows out to outer liquid bath from interior liquid bath, and then makes ball float continous way
The ball float temporal persistence of liquid level gauge is in action lower position；
Step S6：Controller controls back liquid liquid pump to open, and the liquid of outer liquid bath is injected into interior liquid bath by liquid back pipe road, made
The ball float of ball float continous way liquid level gauge follow liquid level in interior liquid bath from action lower position to the direction of action upper limit position on
Floating, the second liquid-level switch then disconnects in the height where the liquid level in detecting interior liquid bath leaves it, and to the controller
Export cut-off signal；
Step S7：Repeat step S3 to step S6；Wherein, controller often receives the once closure letter of first liquid-level switch
Number and the closure signal and a cut-off signal of a cut-off signal and second liquid-level switch after, then control described in
Counter is once counted；When the counter increases to the action frequency of the liquid level gauge set thereon by zero, or
Person stops experiment when the counter is decreased to zero by the action frequency of the liquid level gauge set thereon.
8. liquid level gauge Endurance life test method according to claim 7, it is characterised in that the action time of the liquid level gauge
Number is returned to action upper limit after being moved to action lower position by action upper limit position for the ball float of ball float continous way liquid level gauge
The number put, or the action frequency of the liquid level gauge are moved to for the ball float of ball float continous way liquid level gauge by acting lower position
The number of action lower position is returned to after action upper limit position.
9. liquid level gauge Endurance life test method according to claim 7, it is characterised in that in test, according to being read
The reading for returning flow meters and/or going out flow meters taken change it is described return liquid liquid pump and it is described go out liquid liquid pump power, to adjust
The speed of actions of the ball float of whole ball float continous way liquid level gauge.
10. liquid level gauge Endurance life test method according to claim 7, it is characterised in that in test, pass through adjustment
Return liquid liquid pump and go out liquid liquid pump, use and go out the flow reading on flow meters with returning liquid stream on each liquid back pipe road on liquid pipeline
The summation of the flow reading of gauge is equal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186720A (en) * | 2018-09-08 | 2019-01-11 | 芜湖乐佳电器有限公司 | A kind of water level sensor durability test method |
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| CN201575851U (en) * | 2009-12-11 | 2010-09-08 | 安徽省芜湖仪器仪表研究所 | Oil level sensor endurance testing system for vehicles |
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| CN206514923U (en) * | 2017-03-02 | 2017-09-22 | 温州汇润机电有限公司 | A kind of device for fuel pump fuel level sensor durable test |
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| KR980003492A (en) * | 1996-06-25 | 1998-03-30 | 배순훈 | Durability tester of water level sensor for washing machine |
| CN201000354Y (en) * | 2006-12-29 | 2008-01-02 | 中国南车集团成都机车车辆厂 | Liquid level induction block tester |
| CN201575851U (en) * | 2009-12-11 | 2010-09-08 | 安徽省芜湖仪器仪表研究所 | Oil level sensor endurance testing system for vehicles |
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