CN102913758B - Fluid loss monitoring device and method - Google Patents
Fluid loss monitoring device and method Download PDFInfo
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- CN102913758B CN102913758B CN201210470131.7A CN201210470131A CN102913758B CN 102913758 B CN102913758 B CN 102913758B CN 201210470131 A CN201210470131 A CN 201210470131A CN 102913758 B CN102913758 B CN 102913758B
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Abstract
The invention discloses a fluid loss monitoring device comprises an inner valve, a flow measuring device and a pressure intensity detecting element, wherein the inner valve is installed on the pipeline; the flow measuring device detects the flow of partial fluid between a terminal valve and the inner valve; the pressure intensity detecting element detects the pressure intensity of the inner side and the outer side of the inner valve; and a controller controls the inner valve according to a preset strategy. The preset strategy is as follows: when the detecting flow of the flow measuring device is less than a first preset value, the inner valve is closed; then whether the pressure intensity of the partial fluid between the terminal valve and the inner valve is lowered is determined according to a detecting signal of the pressure intensity detecting element; when the pressure intensity is determined to be lowered, the inner valve is opened; then whether the detecting flow of the flow measuring device is less than the preset threshold is determined again, and when the detecting flow of the flow measuring device is less than the preset threshold, the inner valve is closed and alarming is carried out. The fluid loss monitoring device can control the connection and disconnection of a pipeline according to the actual fluid flow accurately under the condition that low cost is kept. The invention also discloses a fluid loss monitoring method.
Description
Technical field
The present invention relates to a kind of fluid monitoring technology, particularly relate to a kind of fluid loss supervisory device and fluid loss monitoring method.
Background technique
In daily life and industrial processes, conventionally lay suitable pipeline, to control the flow direction of water, oil or other fluids.For convenient, control, meet real life need of production, common mounted valve on pipeline, to control flowing of fluid; Open valve, fluid can be flowed, throttle down, makes fluid stop flowing.Although can control flowing of fluid by valve, valve has certain sealability, and valve seal may reduce because of wearing and tearing after using a period of time.Therefore, the in the situation that of valve seal hydraulic performance decline, even valve closing, fluid also can flow by valve, causes the improper loss of fluid.
In order to confirm or to control fluid flow, on pipeline, be conventionally provided with flow control device.As in water supply pipe, water flow control device is installed conventionally, according to by the water flow of pipeline, control the break-make of pipeline.Water flow control device is provided with measuring water flow part conventionally, work as valve open, current water flow measure portion, current can drive the vane rotary of measuring water flow part, according to the speed of vane rotary, can determine the water flow by water flow control device, according to the through-flow time, can measure the volume of the water of outflow again, realize the measurement to the water yield; The break-make of the data that obtain according to measurement again and predetermined policy control water supply pipe (while reaching predetermined value as the volume of the water flowing out, cut off current, etc.).
But, sealability reduction when valve, or when artificial origin initiatively reduces water flow, the current that flow through water flow measuring device are very little, the energy shortage of current is to drive the vane rotary of water flow measuring device, water flow measuring device just can not be measured the water flowing through, and causes inaccurate to measuring water flow; And then flow control device cannot be controlled according to actual water flow the break-make of water supply pipe, the improper loss of formation water.In prior art, although can reduce drives impeller and rotate needed energy by improving the accuracy of manufacturing of the impeller of water flow measuring device, reduce the initial-flow of water flow measuring device, but this,, with regard to the manufacture cost of water flow control device is increased considerably, can not meet actual demand.The Chinese patent literature CN202149794U(patent No.: ZL201120277718.7) disclose another kind of water flow measuring device, this device forms by the energy of concentrated flow the initial-flow that jet reduces water flow measuring device, but still need an energy to carry out drives impeller rotation, and then cannot make the initial-flow of flow measuring device further reduce.
Therefore, how keeping, in lower-cost situation, controlling more accurately the break-make of pipeline according to actual fluid flow, be, the problem that those skilled in the art need to solve.
Summary of the invention
The object of the present invention is to provide a kind of fluid loss supervisory device, this device can, keeping, in lower-cost situation, controlling more accurately the break-make of pipeline according to actual fluid flow, reduce or avoid the improper loss of fluid.
Providing on the basis of above-mentioned fluid loss supervisory device, a kind of fluid loss monitoring method is also being provided.
Fluid loss supervisory device provided by the invention comprises interior valve, flow measuring probe, controller and pressure Detecting element; Described interior valve is arranged on pipeline, and is positioned at the inner side of terminal valve, for controlling the break-make of described pipeline; Described flow measuring probe is for detection of the fluid flow of part between described terminal valve and interior valve; Described pressure Detecting element is for detection of the pressure of the fluid of part between described terminal valve and interior valve;
Described controller is for controlling described interior valve according to the testing signal of the testing signal of flow measuring probe, pressure Detecting element and predetermined policy:
Described predetermined policy comprises: when the detection flow of flow measuring probe is less than the first predetermined value, close described interior valve; Then according to the testing signal of pressure Detecting element, determine whether the pressure of the fluid of part between described terminal valve and interior valve reduces; When judgement pressure reduces, open interior valve; Whether the detection flow that judges again flow measuring probe is less than predetermined threshold, when the detection flow of flow measuring probe is less than predetermined threshold, closes described interior valve.
Preferably, described pressure Detecting element is the pressure transducer being arranged between described terminal valve and described interior valve.
Preferably, described pressure Detecting element is two pressure transducers that are separately positioned on inner side and the outside of described interior valve;
Or
Described pressure Detecting element is for surveying the differential pressure pickup of the difference of the inner side of described interior valve and the pressure in outside.
Preferably, described predetermined policy also comprises:
Detection flow at flow measuring probe is not less than the first predetermined value, and the Continuous-flow amount of crossing the fluid of described pipeline is while reaching the second predetermined value, closes described interior valve;
And/or
Detection flow at flow measuring probe is not less than the first predetermined value, and lasting through-flow time of fluid while reaching the 3rd predetermined value, closes described interior valve.
Preferably, also can comprise alarm, described alarm is connected with controller; Respectively when the detection flow of flow measuring probe is less than predetermined threshold, when the amount that Continuous-flow is crossed the fluid of described pipeline reaches the second predetermined value, the lasting through-flow time of fluid, while reaching the 3rd predetermined value, described controller sent alarm signal to alarm, makes alarm equipment alarm.
Preferably, also comprise generating electric accumulator, described electric accumulator provides energy for whole supervisory device.
Preferably, described controller comprises central processing unit and counting unit, the signal that described counting unit produces for obtaining flow measuring probe, and the signal that described central processing unit is obtained according to counting unit is determined by the fluid flow of described pipeline.
The present invention also provides a kind of fluid loss monitoring method, and described pipeline connects fluid source, and terminal valve is installed; Valve in the pipe section of the inner side of described terminal valve is installed, the method comprises:
When the fluid flow of part is less than the first predetermined value between described terminal valve and interior valve, close described interior valve;
Under internal valve door closure state, whether the pressure that detects the fluid of part between described terminal valve and interior valve declines, and if so, opens described interior valve;
Whether the fluid flow that judges part between described terminal valve and interior valve is less than predetermined threshold, if so, closes described interior valve.
Preferably, the fluid flow of part while being less than the first predetermined value between terminal valve and interior valve, and under internal valve door closure state, after the pressure that the fluid of part between terminal valve and interior valve detected does not decline, reduces the frequency of closing of interior valve.
Preferably, the mode that between the described terminal valve of described detection and interior valve, whether the pressure of the fluid of part declines comprises:
Pressure and the default pressure of the fluid of part between described terminal valve and interior valve are contrasted, judge whether described pressure declines;
Or
The pressure of fluid source inside pressure and the described interior valve of the fluid of part between described terminal valve and interior valve is contrasted, judge whether to exist pressure reduction, if exist, be considered as pressure decline.
Preferably,
Between described terminal valve and interior valve, the fluid flow of part is not less than the first predetermined value, and the amount of the fluid of Continuous-flow piping is while reaching the second predetermined value, closes described interior valve; Or,
Between described terminal valve and interior valve, the fluid flow of part is not less than the first predetermined value, and lasting through-flow time of fluid while reaching the 3rd predetermined value, closes described interior valve.
Fluid loss supervisory device provided by the invention comprises interior valve, flow measuring probe, pressure Detecting element and controller; Described interior valve is arranged on pipeline, and is positioned at the inner side of terminal valve, and for controlling the break-make of described pipeline, flow measuring probe is for detection of the fluid flow of part between described terminal valve and interior valve; Described pressure Detecting element is for detection of the pressure of the fluid of part between described terminal valve and interior valve.When the detection flow of flow measuring probe is less than the first predetermined value, there are two kinds of situations, the first situation is, fluid does not flow out, and terminal valve seal is good, and the second situation is, fluid or flows out at a slow speed, and terminal valve may seal bad, and then needs further judgement.Then close described interior valve, avoid fluid by interior valve flows inside, to arrive the outside of interior valve.Then according to the testing signal of pressure Detecting element, determine whether the pressure of the fluid of part between described terminal valve and interior valve reduces; Above-mentioned the first situation if, the ducted fluid of internal valve outer side of door keeps motionless, does not produce and runs off, and between terminal valve and interior valve, the pressure of fluid partly does not reduce; Above-mentioned the second situation if, the ducted fluid of internal valve outer side of door or flows out, and now the ducted Fluid Volume of internal valve outer side of door can reduce, and causes the pressure of fluid in internal valve outer side of door pipeline to reduce.So just can judge the first situation that belongs to, still belong to the second situation.Between terminal valve and interior valve, the reduction of the fluid pressure of part likely comprises again two kinds of situations, the first situation is, there is improper loss in the ducted fluid of internal valve outer side of door, second case is, the reduction of pressure is because terminal valve is normally opened, the normal outflow of fluid causes, therefore also needs further judgement.Open interior valve, then judge whether the detection flow of flow measuring probe is less than predetermined threshold; When the detection flow of flow measuring probe is less than predetermined threshold, while being less than normal use due to this predetermined threshold, the flow value of fluid, can determine and belong to the first situation, now closes described interior valve; If the detection flow of flow measuring probe is not less than predetermined threshold, can determine and belong to second case, make interior valve stay open state.Utilize this fluid loss supervisory device just can according to actual fluid flow, control more accurately the break-make of pipeline.Flow measuring probe and pressure Detecting element that fluid loss supervisory device provided by the invention is used all do not need to have very high precision, and then are keeping, in lower-cost situation, just can controlling more accurately according to actual fluid flow the break-make of pipeline.
In further technological scheme, also comprise alarm, between described alarm and controller, can be connected by wired mode or wireless mode, respectively when the detection flow of flow measuring probe is less than predetermined threshold, when the amount that Continuous-flow is crossed the fluid of described pipeline reaches the second predetermined value, the lasting through-flow time of fluid, while reaching the 3rd predetermined value, described controller sent alarm signal to alarm, makes alarm equipment alarm.Like this, when terminal valve seal damages or caused the improper loss of fluid by other reasons, can warn by alarm, so that corresponding part is safeguarded in time.
In further technological scheme, also can comprise generating electric accumulator, described electric accumulator provides energy for whole supervisory device.
Fluid loss monitoring method provided by the invention also has corresponding technique effect.
Accompanying drawing explanation
The working principle schematic diagram of the fluid loss supervisory device that Fig. 1 is to provide.
Fig. 2 is the flow chart of fluid loss monitoring method provided by the invention.
Embodiment
Core of the present invention is: by the pressure of the fluid of part between sense terminals valve and interior valve, again in conjunction with fluid flow, can realize accurate judgement and control to pipeline conditions, the quantitative judgement of fluid flow is converted into pressure and whether reduces the qualitative judgement that whether is less than predetermined threshold with fluid flow, and then can overcome the deficiency in existing quantitative measurement technology, improve the accuracy of judgement.
Below in conjunction with accompanying drawing, technological scheme provided by the invention is described in detail, the description of this part is only exemplary and explanatory, should not be considered as the restriction to public technology content of the present invention.
Should be noted that: in presents, described inner side refers on pipeline bearing of trend, a side of close fluid source, described outside refers on pipeline bearing of trend, away from a side of fluid source.
Please refer to Fig. 1, the figure shows the working principle schematic diagram of a kind of fluid loss supervisory device provided by the invention.
For convenience of description, also show pipeline 100 and terminal valve 110 in figure, pipeline 100 is inner to communicate with fluid source, and the part of the close outer end of pipeline 100 is provided with the particular location of terminal valve 110(terminal valve 110 and can determines according to actual needs).Pipeline 100 forms the passage of fluid, and the switching of terminal valve 110 can be controlled the break-make of the fluid in pipeline 100.Fluid loss supervisory device provided by the invention comprises interior valve 230, flow measuring probe 220 and two pressure transducers 241 and 242, also comprises controller 210.Interior valve 230 is arranged on pipeline 100, and is positioned at the inner side of the terminal valve 110 of pipeline 100; The switching of interior valve 230 also can be controlled the break-make of the fluid in pipeline 100; The normality of interior valve 230 can be open mode.Flow measuring probe 220 is for detection of the fluid flow passing through in pipeline 100.Two pressure transducers 241,242 are arranged on pipeline, and its Check point lays respectively at inner side and the outside of interior valve 230, and then the pressure of valve 230 interior side liquids and the pressure of outer side liquid in detecting respectively.In the present embodiment, flow measuring probe 220 is arranged between terminal valve 110 and interior valve 230, for detection of the fluid flow of part between terminal valve 110 and interior valve 230.Controller 210 is for the switching of valve 230 in controlling according to the testing signal of flow measuring probe 220, two pressure transducers 241,242 and predetermined policy.
In the present embodiment, the predetermined policy of controller 210 can comprise: when the detection flow of flow measuring probe 220 is less than the first predetermined value, close interior valve 230; Then in determining according to the testing signal of two pressure transducers 241,242, between the inner side of valve 230 and outside, whether there is pressure difference; When judgement exists pressure difference, open interior valve 230; Whether the detection flow that judges again flow measuring probe 220 is less than predetermined threshold, when the detection flow of flow measuring probe is less than predetermined threshold, closes interior valve 230.
The monitoring principle of above-mentioned predetermined policy is:
When the detection flow of flow measuring probe 220 is less than the first predetermined value, have two kinds of situations: the first situation is, fluid does not flow out, and the second situation is that fluid or flows out at a slow speed; And then need further to judge.
Close interior valve 230, can avoid fluid by interior valve 230 flows inside, to arrive the outside of interior valve 230.Now, between the inner side of valve 230 and outside, whether there is pressure difference then in determining according to the testing signal of two pressure transducers 241,242.Above-mentioned the first situation if, the interior valve 230 ducted fluids in outside keep motionless, do not produce and run off, between the inner side of valve 230 and outside pressure equate, there is not pressure difference.Above-mentioned the second situation if, the interior valve 230 ducted fluids in outside or flow out, now in the valve 230 ducted Fluid Volumes in outside can reduce, cause interior valve 230 outside pressure to reduce; Simultaneously, valve 230 inner sides communicate with fluid source, and pressure remains unchanged, and then make to have pressure difference between the inner side of interior valve 230 and outside.Like this, according to whether existing pressure difference just can judge the first situation that belongs to, still belong to the second situation.
Between the inner side of interior valve 230 and outside, exist pressure difference likely to comprise again two kinds of situations: the first situation is, there is improper loss in the interior valve 230 ducted fluids in outside, second case is that terminal valve 110 is normally opened, fluid normally flows out, and then also needs further judgement.
Now, open interior valve 230, interior valve 230 inner sides and external lateral portion are communicated with.Whether the detection flow that judges again flow measuring probe 220 is less than predetermined threshold, the flow value of fluid when this predetermined threshold can be set as being less than normal use.When the detection flow of flow measuring probe 220 is less than predetermined threshold, while being less than normal use due to this predetermined threshold, the flow value of fluid, can determine and belong to the first situation, now closes interior valve 230, prevents the improper loss of fluid.If the detection flow of flow measuring probe 220 is not less than predetermined threshold, can determine and belong to second case, make interior valve 230 stay open state.
Utilize above-mentioned fluid loss supervisory device just can according to actual fluid flow, control more accurately the break-make of pipeline.The fluid loss supervisory device that this example provides, flow measuring probe 220 and pressure transducer 241,242 all do not need to have very high precision, and then are keeping, in lower-cost situation, just can controlling more accurately according to actual fluid flow the break-make of pipeline.
Wherein, two pressure transducers 241,242 can be replaced by a differential pressure pickup, can directly measure pressure reduction like this, and contrast after need not measuring respectively again.
According to foregoing description, the first predetermined value can be set according to actual needs, can be for zero (this null value can be flow measuring probe 220 without flow indication value), can be also the initial-flow of flow measuring probe 220, etc.; Predetermined threshold can be equal with the first predetermined value, also can be unequal.
Controller 210 also can be with the switching of valve 230 in other policy control.As: generally, the volume of the fluid that Continuous-flow is crossed is not more than the second predetermined value, when the volume of the fluid of crossing when Continuous-flow reaches the second predetermined value, can think and undesired use produce improper loss.Now, control strategy can be: when flow measuring probe 220 detection flows are not less than the first predetermined value, according to flow and time, can obtain the volume of the fluid flowing through, when the volume of the fluid flowing through each (or continuing) reaches the second predetermined value, by controller 210, interior valve 230 is closed.The time span that can also set once lasting use fluid is the 3rd predetermined value.Control strategy can be: when flow measuring probe 220 detection flows are not less than the first predetermined value, when each (or continuing) used the time of fluid to be not less than the 3rd predetermined value, can think and undesired use produce improper loss, by controller 210, interior valve 230 be closed.Certainly, also can utilize controller 210, with valve 230 in other policy control.
In embodiment provided by the invention, can also comprise alarm 250, between alarm 250 and controller 210, can be connected by wired or wireless mode.Like this, when the detection flow of flow measuring probe 220 is less than predetermined threshold, illustrate to have terminal valve 110 bad seals or other reasons and cause the improper loss of fluid, controller 210 can send alarm signals to alarm 250, make alarm equipment alarm, to remind related personnel to safeguard in time.Certainly, when the volume of the fluid that also can cross at a Continuous-flow is not less than the second predetermined value, or, when once the time span of lasting use fluid is not less than the 3rd predetermined value, make controller 210 send alarm signals to alarm 250.
In the fluid loss supervisory device that the embodiment of the present invention provides, flow measuring probe 220 is selected pulse flow measuring meter; Corresponding, controller 210 comprises central processing unit 211 and counting unit 213, and counting unit 213 can be obtained the pulse that pulse flow measuring meter produces; The pulse signal that central processing unit 211 can be obtained according to counting unit 213 is determined by the flow of fluid in pipeline 100; Such as: according to the umber of pulse that 213 unit time of counting unit obtain, determine the frequency of the pulse that flow measuring meter produces, and then according to this frequency, determine by the flow of fluid in pipeline again.The in the situation that of usage count unit 213, in each operation cycle, need to carry out zero clearing to counting unit 213, as can be less than the first predetermined value at the detection flow of flow measuring probe 220 time, make counting unit 213 zero clearings.Certainly, flow measuring probe 220 is not limited to above-mentioned pulse flow measuring meter, can be also the device of other test fluid flows.
By suitable setting, also can make fluid loss supervisory device there is cumulative measurement function.Such as: in the situation that flow measuring probe 220 is selected pulse flow measuring meter, accumulated counts unit can also be set, and then the amount that the signal convection cell that central processing unit 211 is transmitted according to accumulated counts unit flows through adds up; In the situation that flow measuring probe 220 is selected other flow measuring meters, the signal that also can transmit according to flow measuring probe 220 by central processing unit 211 carries out cumulative measurement to the amount of the fluid by pipeline, etc.
In this example, controller 210 also comprises comparing unit 212.And pressure transducer 241,242 is all connected with comparing unit 212; Like this, comparing unit 212 internally inner side and the outside pressure of valve 230 compares, and whether has pressure difference, and send comparative result to central processing unit 211 in determining between the inner side of valve 230 and outside.In determining, between the inner side of valve 230 and outside, whether exist pressure difference to be not limited to obtain by which, also can adopt other modes to determine, such as: pressure difference can be converted into pressure difference, and utilize this pressure difference to drive predetermined object to move, and then according to whether having pressure difference between the inner side of valve 230 in the location positioning of this predetermined object and outside, or directly adopt differential pressure pickup, directly whether output there is the signal of pressure difference, etc.
In order to facilitate the setting of above-mentioned each predetermined value, facilitate the control of convection cell loss supervisory device, supervisory device can also comprise remote controller 260, and remote controller 260 is connected with controller 210 by wireless mode, and then can remote control fluid loss supervisory device; Certainly, controller 210 also can send corresponding signal to remote controller 260 according to predetermined strategy, make remote controller 260 carry out respective feedback according to the corresponding signal of controller 210, such as corresponding state of a control being presented on remote controller 260 in a predetermined manner, etc.
In this example, fluid loss supervisory device also can comprise generating electric accumulator (not shown), and described electric accumulator provides energy for whole supervisory device.
And, if detect proof terminal valve 110 favorable sealing properties through oneself, the time lag that can also next time enter by interior valve is set closed condition is reduced the frequency of closing of interior valve, to reduce the power consumption of device and the working life of the interior valve of prolongation.
As, after the pressure that the fluid of part detected between terminal valve and interior valve does not decline, starting countdown function, countdown is before zero, while occurring between terminal valve and interior valve that fluid flow is partly less than the first predetermined value, interior valve is not related to and closes; After countdown is zero, while occurring between terminal valve and interior valve that fluid flow is partly less than the first predetermined value, interior valve can be closed.
In addition, whether the present embodiment also can adopt in the mode that a pressure transducer is set between terminal valve and interior valve and come between sense terminals valve and interior valve the pressure of the fluid of part to reduce, at interior valve during in closed condition, if fluid flows out from terminal valve, can cause the Fluid Volume between terminal valve and interior valve to reduce, and then cause pressure to reduce.Now the measured numerical value of pressure transducer just can decrease, and therefore just can draw the judgement that fluid flows out.Pressure can be converted into pressure equally, and utilize the predetermined object of this pressure-driven to move, and then whether reduce according to the pressure of the fluid of part between the location positioning terminal valve of this predetermined object and interior valve, step is afterwards identical with the mode that two pressure transducers are set.
An alternative embodiment of the invention provides a kind of fluid loss monitoring method, and the method can utilize above-mentioned fluid loss supervisory device to implement, but is not limited to utilize above-mentioned fluid loss supervisory device to implement, and also can implement by miscellaneous part and component combination.For convenience of description, be convenient to understand, below the reference character of part continue to use the reference character of each several part shown in Fig. 1.
Please refer to Fig. 2, this illustrates the flow chart of fluid loss monitoring method provided by the invention.
In the fluid loss monitoring method providing, monitored pipeline is connected with fluid source, and terminal valve is installed.Below this monitoring method is described, because its monitoring principle is identical with the monitoring principle of above-mentioned fluid loss supervisory device, for monitoring principle, repeats no more.
Method comprises the following steps:
Step S210: whether the fluid flow that judges part between terminal valve and interior valve is less than the first predetermined value; If so, have two kinds of situations: the first situation is, fluid does not flow out, and the second situation is that fluid or flows out at a slow speed; And then need further judgement, enter step S220.Can judge whether the fluid flow of part between terminal valve and interior valve is less than the first predetermined value according to the testing result of flow measuring probe 220.
Step S220: close interior valve.
Step S230: between sense terminals valve and interior valve, whether the pressure of the fluid of part declines.If not, belong to the first situation, do not move.If so, belong to the second situation; Pressure declines again two kinds of situations: the first situation is, the ducted fluid of internal valve outer side of door exists improper loss, and second case is, terminal valve is normally opened, and fluid normally flows out, and then also needs further judgement, enters step S240.
Step S240: open interior valve.
Step S250: whether the fluid flow that judges part between terminal valve and interior valve is less than predetermined threshold.If not, belong to second case, do not move, think that fluid is without loss.If so, belong to the first situation, enter step S260.
Step S260: by interior valve closing, stop fluid outflow.
In step S230,
Can adopt the mode that a pressure transducer is set between terminal valve and interior valve, by actual measurement pressure, directly judge whether the pressure between terminal valve and interior valve reduces.
Separately can adopt the mode of two pressure transducers or a differential pressure pickup, that pressure by fluid inside the pressure of fluid of part between terminal valve and interior valve and interior valve contrasts, judge whether to exist pressure reduction, if exist, be considered as pressure and decline.
After the pressure that the fluid of part between terminal valve and interior valve detected does not decline, can also enter step S270.
Step S270: valve closing frequency in reducing.
In addition, in step S210, if when the fluid flow of judgement by pipeline 100 is not less than the first predetermined value, can also enter step S280.
In step S280, judge whether the amount of the fluid of Continuous-flow piping 100 reaches the second predetermined value, or judge whether the lasting through-flow time of fluid reach the 3rd predetermined value, if so, think and meet predetermined condition, by interior valve closing.If not, illustrate that fluid normally flows out, do not move.
Certainly, above-mentioned the first predetermined value can be zero, and the first predetermined value and predetermined threshold can equate, also can be unequal.
Applied specific case herein technological scheme provided by the invention is set forth, above embodiment's explanation is just for helping to understand technological scheme provided by the invention.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention; These improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (8)
1. a fluid loss supervisory device, is characterized in that, comprises interior valve, flow measuring probe, controller and two pressure transducers; Described interior valve is arranged on pipeline, and is positioned at the inner side of terminal valve, for controlling the break-make of described pipeline; Described flow measuring probe is for detection of the fluid flow of part between described terminal valve and interior valve; Two described pressure transducers are respectively used to detect the interior survey of described interior valve and the pressure in outside;
Described controller is for controlling described interior valve according to the testing signal of the testing signal of flow measuring probe, two described pressure transducers and predetermined policy;
Described predetermined policy comprises: when the detection flow of flow measuring probe is less than the first predetermined value, close described interior valve; Then according to the testing signal of two described pressure transducers, determine between the inner side of described interior valve and outside whether exist predetermined pressure poor; When judgement exists predetermined pressure poor, open interior valve; Whether the detection flow that judges again flow measuring probe is less than predetermined threshold, when the detection flow of flow measuring probe is less than predetermined threshold, closes described interior valve.
2. fluid loss supervisory device according to claim 1, is characterized in that,
Described the first predetermined value is zero, or described the first predetermined value and predetermined threshold equate.
3. fluid loss supervisory device according to claim 1, is characterized in that, described predetermined policy also comprises:
Detection flow at flow measuring probe is not less than the first predetermined value, and the Continuous-flow amount of crossing the fluid of described pipeline is while reaching the second predetermined value, closes described interior valve;
And/or
Detection flow at flow measuring probe is not less than the first predetermined value, and lasting through-flow time of fluid while reaching the 3rd predetermined value, closes described interior valve.
4. fluid loss supervisory device according to claim 3, is characterized in that, also comprise alarm, described alarm is connected with controller; When the detection flow of flow measuring probe is less than predetermined threshold, described controller sends alarm signal to alarm, makes alarm equipment alarm.
5. according to the fluid loss supervisory device described in claim 1 to 4 any one, it is characterized in that, described controller comprises central processing unit and counting unit, the signal that described counting unit produces for obtaining flow measuring probe, the signal that described central processing unit is obtained according to counting unit is determined by the fluid flow of described pipeline.
6. a fluid loss monitoring method, pipeline connects fluid source, and terminal valve is installed; Valve in the pipe section of the inner side of described terminal valve is installed, is characterized in that, the method comprises:
When the fluid flow of part is less than the first predetermined value between described terminal valve and interior valve, close described interior valve;
Judge between the inner side of described interior valve and outside and whether exist predetermined pressure poor, if so, to open described interior valve;
Whether the fluid flow that judges part between described terminal valve and interior valve is less than predetermined threshold, if so, closes described interior valve.
7. fluid loss monitoring method according to claim 6, is characterized in that, described the first predetermined value is zero, or described the first predetermined value and predetermined threshold equate.
8. according to the fluid loss monitoring method described in claim 6 or 7, it is characterized in that,
Between described terminal valve and interior valve, the fluid flow of part is not less than the first predetermined value, and the amount of the fluid of Continuous-flow piping is while reaching the second predetermined value, closes described interior valve; Or,
Between described terminal valve and interior valve, the fluid flow of part is not less than the first predetermined value, and lasting through-flow time of fluid while reaching the 3rd predetermined value, closes described interior valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210470131.7A CN102913758B (en) | 2012-07-23 | 2012-11-19 | Fluid loss monitoring device and method |
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| CN201210256213.1 | 2012-07-23 | ||
| CN2012102562131A CN102748587A (en) | 2012-07-23 | 2012-07-23 | Device and method for monitoring pipeline fluid |
| CN201210470131.7A CN102913758B (en) | 2012-07-23 | 2012-11-19 | Fluid loss monitoring device and method |
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| CN102913758A CN102913758A (en) | 2013-02-06 |
| CN102913758B true CN102913758B (en) | 2014-11-12 |
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| CN2012102562131A Pending CN102748587A (en) | 2012-07-23 | 2012-07-23 | Device and method for monitoring pipeline fluid |
| CN 201220613143 Expired - Fee Related CN202946928U (en) | 2012-07-23 | 2012-11-19 | Fluid loss monitoring device |
| CN201210470131.7A Active CN102913758B (en) | 2012-07-23 | 2012-11-19 | Fluid loss monitoring device and method |
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|---|---|---|---|---|
| CN102748587A (en) * | 2012-07-23 | 2012-10-24 | 刘金玉 | Device and method for monitoring pipeline fluid |
| CN105628114A (en) * | 2016-01-06 | 2016-06-01 | 朱小菊 | Bernoulli intelligent water meter |
| CN105782728B (en) * | 2016-04-29 | 2018-07-13 | 刘金玉 | A kind of fluid leakage monitoring device and monitoring method |
| CN105865531A (en) * | 2016-06-06 | 2016-08-17 | 无锡市翱宇特新科技发展有限公司 | Pipeline flow monitoring system |
| CN107893909B (en) * | 2017-11-10 | 2023-09-12 | 九牧厨卫股份有限公司 | Safety water monitor and safety water monitoring method |
| CN107831798B (en) * | 2017-11-15 | 2021-08-06 | 无锡鼎加弘思饮品科技有限公司 | Early warning system and early warning method for realizing pressure control by utilizing flowmeter pulse |
| CN108007515A (en) * | 2017-11-29 | 2018-05-08 | 鄂州市泽瑞高科分质供水工程有限公司 | Flow detector, method and system |
| CN113432667A (en) * | 2021-05-21 | 2021-09-24 | 中广核研究院有限公司 | Liquid level measuring device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748587A (en) * | 2012-07-23 | 2012-10-24 | 刘金玉 | Device and method for monitoring pipeline fluid |
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- 2012-11-19 CN CN 201220613143 patent/CN202946928U/en not_active Expired - Fee Related
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748587A (en) * | 2012-07-23 | 2012-10-24 | 刘金玉 | Device and method for monitoring pipeline fluid |
| CN202946928U (en) * | 2012-07-23 | 2013-05-22 | 刘金玉 | Fluid loss monitoring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102913758A (en) | 2013-02-06 |
| CN102748587A (en) | 2012-10-24 |
| CN202946928U (en) | 2013-05-22 |
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