CN107831796A - A kind of device and the flow control methods based on the device and anti-down irrigation method on pipeline - Google Patents
A kind of device and the flow control methods based on the device and anti-down irrigation method on pipeline Download PDFInfo
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- CN107831796A CN107831796A CN201710916115.9A CN201710916115A CN107831796A CN 107831796 A CN107831796 A CN 107831796A CN 201710916115 A CN201710916115 A CN 201710916115A CN 107831796 A CN107831796 A CN 107831796A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
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Abstract
The invention discloses a kind of device and the flow control methods based on the device and anti-down irrigation method on pipeline, described device a whole set of can configure and carry out prefabricated, and its is simple in construction, save and build and equipment cost, be greatly reduced the input of labour.Described device can also realize remote control and monitoring, by monitoring the liquid level difference of upstream water body and downstream water in real time come the folding size of control valve, achievable biliquid bit traffic control or reverse-filling.The flow control methods are that the flow for flowing through the pipeline is calculated in the liquid level difference of the downstream water liquid level of the upper water body fluid position and second liquid level gauge monitoring monitored by first liquid level gauge, and the flow monitoring of water body can be achieved without reusing flowmeter.
Description
Technical field
The invention belongs to flow control and technical field of drainage, and in particular to a kind of device on pipeline and based on this
The flow control methods of device and anti-down irrigation method.
Background technology
Flow refers in the unit interval by the material quantity in a certain section, i.e. instantaneous delivery.In modern industrial production mistake
Cheng Zhong, flow are one of important procedure parameters, are the efficiency of weighing device and the important indicator of economy, be production operation and
The foundation of control, because in most of industrial productions, it is conventional to measure and control flow to determine the proportioning of material and consumption, it is real
Existing Automation of Manufacturing Process and optimized control；While in order to carry out business accounting, it is also necessary to know the medium total amount flowed through.Institute
So that measurement and the control of flow are to realize a vital task of industrial processes.
The species of flow-measuring method and instrument is various, and sorting technique is also a lot, and is directed to different application fields, right
Also different in the requirement of used flow-measuring method and instrument, i.e., every kind of flow-measuring method and instrument all have specifically
Applicability, also there is its limitation.
In water inlet and/or outlet pipeline system in the municipal sewerage engineering in China, control for the discharge of sewage into
For an important field of research, by the control to the discharge of sewage in pipe-line system, regulate and control at any time each in pipe-line system
Valve and associated component, the smooth discharge of water body is realized, avoid various flood and waterlogs caused by being discharged not in time because of rainwater excess
Evil.
In current pipe-line system, conventional flow controller is installs all kinds of flowmeters in pipeline, but it is faced
So complicated huge pipe-line system is, it is necessary to the quantity of the flowmeter of installation certainly will be quite a few, and the structure of most flowmeters
Complexity, it is bulky, install and debug more complicated, and be difficult to repair；Most of instrument and meter is only intended to the list of cleaning
Phase liquid, sewage and rainwater common in pipe-line system are not particularly suited for, may also have some solid suspensions etc.；Most pipes
The system of road of control in to(for) flow need not be especially accurate, if using to the more strict flowmeter of required precision, it is also inevitable
Cause procurement price high, invest larger, the appearance for the various problems such as operation and maintenance cost is higher.
Further, the applicable surface of existing volume control device is narrower, typically it is only capable of controlling use as flow, exploitation has
More multi-functional volume control device is that existing drainage system is badly in need of.
The content of the invention
In order to improve the deficiencies in the prior art, the invention provides a kind of device on pipeline and based on the device
Flow control methods and anti-down irrigation method, described device can be used for the flow that measurement flows through the pipeline, and described device may be used also
For reverse-filling, dexterously flow control and reverse-filling are combined within one device, are especially suitable for existing drainage system
Demand；The flow control methods can be accurately obtained the flow for flowing through pipeline, instead of flowmeter completely, and it has operation
Conveniently, the advantages that cost is cheap.
The present invention provides following technical scheme：
A kind of device on pipeline, described device include first liquid level gauge, second liquid level gauge and installed in pipelines
On the first measurement pipe, valve and the second measurement pipe；
First measurement pipe and the second measurement pipe are arranged on pipeline, and with the pipeline connection；
The valve is on the pipeline between first measurement pipe and the second measurement pipe；
First measurement pipe is located at the entrance side of the valve, and second measurement pipe is located at the outlet of the valve
Side；
The first liquid level gauge, for detecting the liquid level of the upstream water body in first measurement pipe；
The second liquid level gauge, for detecting the liquid level of the downstream water in second measurement pipe.
According to the present invention, first measurement pipe is arranged on the pipeline parallel with the second measurement pipe.
According to the present invention, described device also includes controller, the controller respectively with the first liquid level gauge, described
Two liquid level gauges connect with valve signal, for receiving the liquid level signal of first liquid level gauge and the second liquid level gauge monitoring, and root
The aperture of the valve is controlled according to the liquid level signal.
According to the present invention, the first liquid level gauge is arranged in the first measurement pipe, and the second liquid level gauge is arranged on second
In measurement pipe.
According to the present invention, the setting height(from bottom) of the first liquid level gauge and the second liquid level gauge is not less than 0.5 meter.The peace
Dress height refers to liquid level gauge to the vertical height of pipeline.
According to the present invention, first measurement pipe and second measurement pipe are each perpendicular to the pipeline and set.
According to the present invention, first measurement pipe and the distance between second measurement pipe and the valve are not more than 10
Rice.
According to the present invention, described device also includes a well body, and the valve is arranged in well body, easy to operation and dimension
Repair.
According to the present invention, first measurement pipe can be located in well body, can also be located at well body upstream end, be preferably placed at
In well body, easy to operation and maintenance.
According to the present invention, second measurement pipe can be located in well body, can also be located at well body downstream, be preferably placed at
In well body, easy to operation and maintenance.
According to the present invention, the valve dams selected from gate valve, ball valve, butterfly valve, diamond valve, V-arrangement valve, rubber clack in check-valves
At least one.
According to the present invention, the type of drive of the valve can use it is electronic, surge or pneumatically.
The present invention also provides a kind of pipe-line system, and the pipe-line system includes the above-mentioned device being used in pipeline.
According to the present invention, the pipe-line system also includes pipeline, that is, installs first measurement pipe, the second measurement pipe and valve
The pipeline of door.
The present invention also provides the purposes of said apparatus, its reverse-filling being used on pipeline.
Preferably, for cutting the reverse-filling on dirty pipe.
Preferably, the reverse-filling for being cut in shunting well on dirty pipe.
The present invention also provides the purposes of said apparatus, its flow control being used on pipeline.
Preferably, for cutting the flow control on dirty pipe.
Preferably, for cutting the flow control on dirty pipe in shunting well.
The present invention also provides a kind of double liquid level flow control methods on pipeline, and methods described is based on above-mentioned use
In the device on pipeline, methods described comprises the following steps：
1) the liquid level H of upstream water body is monitored1With the liquid level H of downstream water2；
2) liquid level difference (H of upstream water body and downstream water is determined1-H2) and the valve opening S and flow Q for flowing through pipeline
Relational expression is as follows：
In formula,
S --- valve opening (discharge area in valve) (m2)；
H1--- the liquid level (m) of the upstream water body of first liquid level gauge monitoring；
H2--- the liquid level (m) of the downstream water of second liquid level gauge monitoring；
σs--- flood coefficient；
G --- acceleration of gravity (m/s2)；
M --- the discharge coefficient of free overflow, it is relevant with the boundary condition such as pipeline；
σc--- side constriction coefficient, reflect the cross-direction shrinkage due to pipeline, reduce effective excessively stream width and increased office
Influence of portion's energy loss to discharge capacity；
Influence of the relative opening degree of μ --- the discharge coefficient of pipeline free discharge, reflection pipeline and valve to vent flow；
3) liquid level difference and the relational expression of the upstream water body based on monitoring and downstream water, passes through controlling opening of valve
To realize the control for the flow for flowing through pipeline.
According to the present invention, in the relational expression, σsTo flood coefficient, with liquid level difference (H1-H2) relevant, can be with table look-at
Obtain.
According to the present invention, in the relational expression, K is set coefficient, as liquid level difference (H1-H2) after determination, K is also to determine
Value.
According to the present invention, in the relational expression, the parameter determines coefficient correlation by tabling look-up, and when in use according to reality
Border situation is modified；Or the measured value according to reality, directly utilize relational expressionMiddle ratio
Example relation determines the set COEFFICIENT K of coefficient correlation, such as when front and rear liquid level difference determines, σsCan be tabled look-up acquisition；Civil engineering base
Plinth structure snd size, equipment installation dimension and the timing of position one, K is definite value；Therefore, by monitoring first liquid level gauge and second
Liquid level difference (the H of liquid level gauge1-H2) and valve opening S, you can calculate the flow Q for flowing through pipeline.
According to the present invention, the flow that the double liquid level flow control methods are used for pipeline controls.
According to the present invention, the double liquid level flow control methods are used for the flow control for cutting dirty pipe.
According to the present invention, the double liquid level flow control methods are used in shunting well the flow control for cutting dirty pipe.
According to the present invention, the double liquid level flow control methods also comprise the following steps：
According to cutting the downstream line treatable maximum stream flow of institute that dirty pipe is connected or managing the downstream wastewater being connected with cutting a dirt
The treatable maximum stream flow setting flow Q1 of institute for the treatment of plant；
A) during fine day, when flowing through the flow for cutting dirty pipe less than setting flow Q1, valve is shown in a fully open operation, and dry flow sewage is complete
Portion, which flows into, to be cut in dirty pipe；
B) during the rainy day, judge that now rainfall is early-stage rainwater or middle and later periods rainwater；If early-stage rainwater, following steps are performed
Rapid b-1)；If middle and later periods rainwater, following step b-2 is performed)；
B-1) during early-stage rainwater, when flowing through the flow for cutting dirty pipe less than setting flow Q1, valve is shown in a fully open operation；
When flowing through the flow for cutting dirty pipe higher than setting flow Q1, the aperture of control valve, realize to flow into and cut dirty pipe reclaimed water
The accurate control of body；
B-2) during middle and later periods rainwater, valve is in full off state, and water body is all flowed into natural water.
In the present invention, described early-stage rainwater refers to that, containing a large amount of pollutants, water quality is not reaching to the water body of discharge standard,
To the rainwater to rain in lasting 5-30min when generally beginning to rain；Described middle and later periods rainwater refers to that water quality reaches discharge mark
Accurate water body.
The present invention also provides a kind of method of reverse-filling, and methods described is based on the above-mentioned device being used on pipeline；Institute
Anti-down irrigation method is stated to comprise the following steps：
1) the water body level value of valve inlet side and outlet side is monitored respectively by first liquid level gauge and second liquid level gauge, point
H is not designated as it1And H2；
2) the water body level value H monitored by first liquid level gauge1With the water body level value H of second liquid level gauge monitoring2Size
Judged：
Work as H1-H2More than zero or H2-H1During less than zero, valve is shown in a fully open operation, and the water body of valve inlet side flows to valve
Outlet side；
Work as H1-H2Equal to zero or H2-H1During equal to zero, the aperture of control valve to H1-H2More than zero or H2-H1Equal to zero, keep away
The water body for exempting from valve export side pours in down a chimney；And
Work as H1-H2Less than zero or H2-H1During more than zero, valve is in full off state, avoids the water body of valve export side from occurring
Pour in down a chimney.
Preferably, methods described is for cutting the reverse-filling on dirty pipe.
Preferably, methods described is the reverse-filling for being cut in shunting well on dirty pipe.
Beneficial effects of the present invention：
(1) device being used on pipeline of the invention can realize the control of piping flow, can also realize that pipeline is anti-down
The monitoring of filling, it a whole set of can configure and carry out prefabricated, and its is simple in construction, save and build and equipment cost, be greatly reduced labor
The input of power.
(2) device being used on pipeline of the invention can also realize remote control and monitoring, by monitoring upstream in real time
The liquid level difference of water body and downstream water carrys out the folding size of control valve, and the control of biliquid bit traffic or reverse-filling can be achieved.
(3) the biliquid bit traffic being used on pipeline control of the invention is to be based on parallel arrangement of first measurement in pipeline
Pipe and the second measurement pipe and first liquid level gauge and second liquid level gauge therein are installed on, pass through the upper water that first liquid level gauge monitors
The flow for flowing through the pipeline is calculated in the liquid level difference of the downstream water liquid level of body fluid position and second liquid level gauge monitoring, without
Reuse the flow monitoring that water body can be achieved in flowmeter.
(4) the double liquid level flow control methods being used on pipeline of the invention are simple, easily operated, can also realize long-range
Control and monitoring, control the folding size of flow control valve by monitoring the liquid level difference of double liquid level in real time, realize to pipeline
The control of middle water body.
Brief description of the drawings
Fig. 1 is the front view of the device described in a preferred embodiment of the invention；
Wherein, 1- upstreams, the measurement pipes of 2- first, 3- first liquid level gauges, 4- well bodies, 5- second liquid level gauges, 6- second
Measurement pipe, 7- downstream pipes, 8- valves.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.Furthermore, it is to be understood that after described content of the invention has been read, this area skill
Art personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within limited range of the present invention.
Embodiment 1
As shown in figure 1, the present embodiment provides a kind of device on pipeline, described device includes first liquid level gauge, the
Two liquid level gauges and the first measurement pipe, valve and the second measurement pipe on pipeline；
First measurement pipe and the second measurement pipe are arranged on pipeline, and with the pipeline connection；
The valve is on the pipeline between first measurement pipe and the second measurement pipe；
First measurement pipe is located at the entrance side of the valve, and second measurement pipe is located at the outlet of the valve
Side；
The first liquid level gauge, for detecting the liquid level of the upstream water body in first measurement pipe；
The second liquid level gauge, for detecting the liquid level of the downstream water in second measurement pipe.
In a preferred embodiment of the present invention, first measurement pipe is arranged at described parallel with the second measurement pipe
On pipeline.
In a preferred embodiment of the present invention, described device also includes controller, the controller respectively with institute
State first liquid level gauge, the second liquid level gauge connects with valve signal, for receiving the first liquid level gauge and second liquid level gauge
The liquid level signal of monitoring, and according to the aperture of the liquid level signal control valve.
In a preferred embodiment of the present invention, the first liquid level gauge is arranged in the first measurement pipe, and described
Two liquid level gauges are arranged in the second measurement pipe.
In a preferred embodiment of the present invention, the setting height(from bottom) of the first liquid level gauge and the second liquid level gauge
Not less than 0.5 meter.The setting height(from bottom) refers to liquid level gauge to the vertical height of pipeline.
In a preferred embodiment of the present invention, first measurement pipe and second measurement pipe are each perpendicular to institute
State pipeline setting.
In a preferred embodiment of the present invention, first measurement pipe and second measurement pipe and the valve
The distance between be not more than 10 meters.
In a preferred embodiment of the present invention, described device also includes a well body, and the valve is arranged at well
In body, easy to operation and maintenance.
In a preferred embodiment of the present invention, first measurement pipe can be located in well body, can also be located at
Well body upstream end, is preferably placed in well body, easy to operation and maintenance.
In a preferred embodiment of the present invention, second measurement pipe can be located in well body, can also be located at
Well body downstream, is preferably placed in well body, easy to operation and maintenance.
In a preferred embodiment of the present invention, the valve be selected from gate valve, ball valve, butterfly valve, diamond valve, V-arrangement valve,
Rubber clack dams at least one of check-valves.The type of drive of the valve can use it is electronic, surge or pneumatically.
The reverse-filling that device described in the present embodiment can be used on pipeline.Preferably, for cutting the reverse-filling on dirty pipe.
It is further preferred that for the reverse-filling cut in shunting well on dirty pipe.
The flow control that device described in the present embodiment can be used on pipeline.Preferably, for cutting the flow on dirty pipe
Control.It is further preferred that for cutting the flow control on dirty pipe in shunting well.
Embodiment 2
The present embodiment provides a kind of pipe-line system, and the pipe-line system includes the dress being used in pipeline described in embodiment 1
Put.
In a preferred embodiment of the present invention, the pipe-line system also includes pipeline, that is, installs described first and survey
The pipeline of buret, the second measurement pipe and valve.
Embodiment 3
The present embodiment provides a kind of double liquid level flow control methods on pipeline, and methods described is to be based on embodiment 1
The described device being used on pipeline, methods described comprise the following steps：
1) the liquid level H of upstream water body is monitored1With the liquid level H of downstream water2；
2) liquid level difference (H of upstream water body and downstream water is determined1-H2) and the valve opening S and flow Q for flowing through pipeline
Relational expression is as follows：
In formula,
S --- valve opening (discharge area in valve) (m2)；
H1--- the liquid level (m) of the upstream water body of first liquid level gauge monitoring；
H2--- the liquid level (m) of the downstream water of second liquid level gauge monitoring；
σs--- flood coefficient；
G --- acceleration of gravity (m/s2)；
M --- the discharge coefficient of free overflow, it is relevant with the boundary condition such as pipeline；
σc--- side constriction coefficient, reflect the cross-direction shrinkage due to pipeline, reduce effective excessively stream width and increased office
Influence of portion's energy loss to discharge capacity；
Influence of the relative opening degree of μ --- the discharge coefficient of pipeline free discharge, reflection pipeline and valve to vent flow；
3) liquid level difference and the relational expression of the upstream water body based on monitoring and downstream water, passes through controlling opening of valve
To realize the control for the flow for flowing through pipeline.
In a preferred embodiment of the present invention, in the relational expression, σsTo flood coefficient, with liquid level difference (H1-H2)
It is relevant, it can be obtained with table look-at.
In a preferred embodiment of the present invention, in the relational expression, K is set coefficient, as liquid level difference (H1-H2)
After it is determined that, K is also the value of determination.
In a preferred embodiment of the present invention, in the relational expression, the parameter determines phase relation by tabling look-up
Number, and be modified when in use according to actual conditions；Or the measured value according to reality, directly utilize relational expressionMiddle proportionate relationship determines the set COEFFICIENT K of coefficient correlation, such as when front and rear liquid level difference determines
When, σsCan be tabled look-up acquisition；Foundation of civil work structure snd size, equipment installation dimension and the timing of position one, K is definite value；Therefore,
By the liquid level difference (H for monitoring first liquid level gauge and second liquid level gauge1-H2) and valve opening S, you can calculate and flow through pipeline
Flow Q.
In a preferred embodiment of the present invention, the double liquid level flow control methods are used for the flow control of pipeline
System.
In a preferred embodiment of the present invention, the double liquid level flow control methods are used for the flow control for cutting dirty pipe
System.
In a preferred embodiment of the present invention, the double liquid level flow control methods are used to cut dirty pipe in shunting well
Flow control.
Embodiment 4
The present embodiment also provides a kind of double liquid level flow control methods, and the double liquid level flow control methods also include as follows
Step：
According to cutting the downstream line treatable maximum stream flow of institute that dirty pipe is connected or managing the downstream wastewater being connected with cutting a dirt
The treatable maximum stream flow setting flow Q1 of institute for the treatment of plant；
A) during fine day, when flowing through the flow for cutting dirty pipe less than setting flow Q1, valve is shown in a fully open operation, and dry flow sewage is complete
Portion, which flows into, to be cut in dirty pipe；
B) during the rainy day, judge that now rainfall is early-stage rainwater or middle and later periods rainwater；If early-stage rainwater, following steps are performed
Rapid b-1)；If middle and later periods rainwater, following step b-2 is performed)；
B-1) during early-stage rainwater, when flowing through the flow for cutting dirty pipe less than setting flow Q1, valve is shown in a fully open operation；
When flowing through the flow for cutting dirty pipe higher than setting flow Q1, the aperture of control valve, realize to flow into and cut dirty pipe reclaimed water
The accurate control of body；
B-2) during middle and later periods rainwater, valve is in full off state, and water body is all flowed into natural water.
In the present invention, described early-stage rainwater refers to that, containing a large amount of pollutants, water quality is not reaching to the water body of discharge standard,
To the rainwater to rain in lasting 5-30min when generally beginning to rain；Described middle and later periods rainwater refers to that water quality reaches discharge mark
Accurate water body.
Embodiment 5
The present embodiment provides a kind of method of reverse-filling, and methods described is based on being used for described in embodiment 1 on pipeline
Device；The anti-down irrigation method comprises the following steps：
1) the water body level value of valve inlet side and outlet side is monitored respectively by first liquid level gauge and second liquid level gauge, point
H is not designated as it1And H2；
2) the water body level value H monitored by first liquid level gauge1With the water body level value H of second liquid level gauge monitoring2Size
Judged：
Work as H1-H2More than zero or H2-H1During less than zero, valve is shown in a fully open operation, and the water body of valve inlet side flows to valve
Outlet side；
Work as H1-H2Equal to zero or H2-H1During equal to zero, the aperture of control valve to H1-H2More than zero or H2-H1Equal to zero, keep away
The water body for exempting from valve export side pours in down a chimney；And
Work as H1-H2Less than zero or H2-H1During more than zero, valve is in full off state, avoids the water body of valve export side from occurring
Pour in down a chimney.
Preferably, methods described is for cutting the reverse-filling on dirty pipe.
Preferably, methods described is the reverse-filling for being cut in shunting well on dirty pipe.
In the present invention, in drainage procedure, when the liquid level of downstream pipe is higher than the liquid level of upstream, water
Cognition pours in down a chimney phenomenon in the pipeline, i.e. downstream water pours in upstream end, causes upstream water body in time to drain and send out
Raw waterlogging；And the present invention is the control method using double liquid level, liquid level gauge is installed respectively in the entrance side and outlet side of valve, led to
The entrance side of liquid level gauge monitoring valve and the height of water level of outlet side are crossed to judge whether the water body for flowing through the pipeline can fall
Fill phenomenon.When the height of water level of entrance side is higher than the height of water level of outlet side, water body relies on Action of Gravity Field, is arranged to outlet side
Walk；When the height of water level of entrance side is less than the height of water level of outlet side, water body relies on Action of Gravity Field, drains to entrance side, this
When need in time close valve, effectively prevent downstream water pours in down a chimney phenomenon.
More than, embodiments of the present invention are illustrated.But the present invention is not limited to above-mentioned embodiment.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of device on pipeline, it is characterised in that described device includes first liquid level gauge, second liquid level gauge and peace
The first measurement pipe, valve and the second measurement pipe on pipeline；
First measurement pipe and the second measurement pipe are arranged on pipeline, and with the pipeline connection；
The valve is on the pipeline between first measurement pipe and the second measurement pipe；
First measurement pipe is located at the entrance side of the valve, and second measurement pipe is located at the outlet side of the valve；
The first liquid level gauge, for detecting the liquid level of the upstream water body in first measurement pipe；
The second liquid level gauge, for detecting the liquid level of the downstream water in second measurement pipe.
2. device according to claim 1, it is characterised in that first measurement pipe is arranged at parallel with the second measurement pipe
On the pipeline.
Preferably, the first liquid level gauge is arranged in the first measurement pipe, and the second liquid level gauge is arranged in the second measurement pipe.
Preferably, the setting height(from bottom) of the first liquid level gauge and the second liquid level gauge is not less than 0.5 meter.
Preferably, first measurement pipe and second measurement pipe are each perpendicular to the pipeline setting.
Preferably, first measurement pipe and the distance between second measurement pipe and the valve are not more than 10 meters.
Preferably, described device also includes a well body, and the valve is arranged in well body.
Preferably, first measurement pipe can be located in well body, can also be located at well body upstream end, be preferably placed in well body.
Preferably, second measurement pipe can be located in well body, can also be located at well body downstream, be preferably placed in well body.
Preferably, the valve selected from gate valve, ball valve, butterfly valve, diamond valve, V-arrangement valve, rubber clack dam check-valves at least one
Kind.
Preferably, the type of drive of the valve can use it is electronic, surge or pneumatically.
3. device according to claim 1 or 2, it is characterised in that described device also includes controller, the controller point
It is not connected with the first liquid level gauge, the second liquid level gauge and valve signal, for receiving the first liquid level gauge and second
The liquid level signal of liquid level gauge monitoring, and according to the aperture of the liquid level signal control valve.
4. a kind of pipe-line system, it is characterised in that the pipe-line system includes being used to manage any one of claim 1-3
Device in road.
Preferably, the pipe-line system also includes pipeline, that is, installs the pipe of first measurement pipe, the second measurement pipe and valve
Road.
5. the purposes of the device any one of claim 1-3, its reverse-filling being used on pipeline.
Preferably, for cutting the reverse-filling on dirty pipe.
Preferably, the reverse-filling for being cut in shunting well on dirty pipe.
6. the purposes of the device any one of claim 1-3, its flow control being used on pipeline.
Preferably, for cutting the flow control on dirty pipe.
Preferably, for cutting the flow control on dirty pipe in shunting well.
7. a kind of double liquid level flow control methods on pipeline, it is characterised in that methods described is to be based on claim 1-3
Any one of the device being used on pipeline, methods described comprises the following steps：
1) the liquid level H of upstream water body is monitored1With the liquid level H of downstream water2；
2) liquid level difference (H of upstream water body and downstream water is determined1-H2) and valve opening S and flow through pipeline flow Q relation
Formula is as follows：
<mrow>
<mi>Q</mi>
<mo>=</mo>
<mi>K</mi>
<mo>&CenterDot;</mo>
<msub>
<mi>&sigma;</mi>
<mi>s</mi>
</msub>
<mo>&CenterDot;</mo>
<mi>S</mi>
<mo>&CenterDot;</mo>
<msqrt>
<mrow>
<mo>(</mo>
<msub>
<mi>H</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<msub>
<mi>H</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
</msqrt>
</mrow>
In formula,
S --- valve opening (discharge area in valve) (m2)；
H1--- the liquid level (m) of the upstream water body of first liquid level gauge monitoring；
H2--- the liquid level (m) of the downstream water of second liquid level gauge monitoring；
σs--- flood coefficient；
<mrow>
<mi>K</mi>
<mo>=</mo>
<msub>
<mi>&sigma;</mi>
<mi>c</mi>
</msub>
<mi>&mu;</mi>
<mi>m</mi>
<msqrt>
<mrow>
<mn>2</mn>
<mi>g</mi>
</mrow>
</msqrt>
<mo>;</mo>
</mrow>
G --- acceleration of gravity (m/s2)；
M --- the discharge coefficient of free overflow, it is relevant with the boundary condition such as pipeline；
σc--- side constriction coefficient, reflect the cross-direction shrinkage due to pipeline, reduce effective excessively stream width and increased local energy
Lose the influence to discharge capacity；
Influence of the relative opening degree of μ --- the discharge coefficient of pipeline free discharge, reflection pipeline and valve to vent flow；
3) liquid level difference and the relational expression of the upstream water body based on monitoring and downstream water, by controlling opening of valve come real
Now flow through the control of the flow of pipeline.
8. control method according to claim 7, it is characterised in that in the relational expression, σsTo flood coefficient, with liquid level difference
(H1-H2) relevant, it can be obtained with table look-at.
Preferably, in the relational expression, K is set coefficient, as liquid level difference (H1-H2) after determination, K also values to determine.
Preferably, in the relational expression, the parameter determines coefficient correlation by tabling look-up, and is entered when in use according to actual conditions
Row amendment；Or the measured value according to reality, directly utilize relational expressionMiddle proportionate relationship is come
The set COEFFICIENT K of coefficient correlation is determined, such as when front and rear liquid level difference determines, σsCan be tabled look-up acquisition；Foundation of civil work structure and
Size, equipment installation dimension and the timing of position one, K is definite value；Therefore, by monitoring first liquid level gauge and second liquid level gauge
Liquid level difference (H1-H2) and valve opening S, you can calculate the flow Q for flowing through pipeline.
Preferably, the double liquid level flow control methods are used for the flow control of pipeline.
Preferably, the double liquid level flow control methods are used for the flow control for cutting dirty pipe.
Preferably, the double liquid level flow control methods are used in shunting well the flow control for cutting dirty pipe.
9. the control method according to claim 7 or 8, it is characterised in that the double liquid level flow control methods also include
Following steps：
According to cutting the downstream line treatable maximum stream flow of institute that dirty pipe is connected or dirty managing the downstream wastewater being connected processing with cutting
The treatable maximum stream flow setting flow Q1 of institute of factory；
A) during fine day, when flowing through the flow for cutting dirty pipe less than setting flow Q1, valve is shown in a fully open operation, and dry flow sewage all flows
Enter to cut in dirty pipe；
B) during the rainy day, judge that now rainfall is early-stage rainwater or middle and later periods rainwater；If early-stage rainwater, following step b- is performed
1)；If middle and later periods rainwater, following step b-2 is performed)；
B-1) during early-stage rainwater, when flowing through the flow for cutting dirty pipe less than setting flow Q1, valve is shown in a fully open operation；
When flowing through the flow for cutting dirty pipe higher than setting flow Q1, the aperture of control valve, realize to flow into and cut water body in dirty pipe
Accurate control；
B-2) during middle and later periods rainwater, valve is in full off state, and water body is all flowed into natural water.
10. a kind of method of reverse-filling, methods described is based on the dress being used on pipeline any one of claim 1-3
Put；The anti-down irrigation method comprises the following steps：
1) monitor the water body level value of valve inlet side and outlet side respectively by first liquid level gauge and second liquid level gauge, remember respectively
For H1And H2；
2) the water body level value H monitored by first liquid level gauge1With the water body level value H of second liquid level gauge monitoring2Size carry out
Judge：
Work as H1-H2More than zero or H2-H1During less than zero, valve is shown in a fully open operation, and the water body of valve inlet side flows to valve export
Side；
Work as H1-H2Equal to zero or H2-H1During equal to zero, the aperture of control valve to H1-H2More than zero or H2-H1Equal to zero, valve is avoided
The water body of door outlet side pours in down a chimney；And
Work as H1-H2Less than zero or H2-H1During more than zero, valve is in full off state, avoids the water body of valve export side from pouring in down a chimney.
Preferably, methods described is for cutting the reverse-filling on dirty pipe.
Preferably, methods described is the reverse-filling for being cut in shunting well on dirty pipe.
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Cited By (1)
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