CN109908649A - A kind of the pump intake filter device and analogy method of analog pipe resistance characteristic - Google Patents
A kind of the pump intake filter device and analogy method of analog pipe resistance characteristic Download PDFInfo
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Abstract
The invention discloses a kind of pump intake filter device of analog pipe resistance characteristic and analogy methods, described device includes two sections of pipe fittings, each pipe fitting is connected with connecting flange, it further include net-filter assembly, the net-filter assembly includes plate ring and strainer, the strainer includes filter screen and bottom support ring, the bottom support ring is annular in shape, the open end of the filter screen is connected on the inside of bottom support ring, and the centre bore on plate ring is as the channel being connected between two pipe fittings, on fluid flow direction, plate ring is clamped between plate ring and the end face of downstream pipe fitting, filter screen is partially or fully located in the pipe fitting in downstream；It further include manometric module, the manometric module is used to measure the pressure difference of net-filter assembly two sides.The structure design of the filter device, which not only facilitates, realizes tamper cleaning, while can realize that pipe resistance characteristic is adjusted, and the cleaning and adjusting can simultaneously operatings；The analogy method is the adjusting method of the drag characteristic.
Description
Technical field
The present invention relates to fluid circuit technical fields, make a slip of the tongue more particularly to a kind of being pumped into for analog pipe resistance characteristic
Filter device and analogy method.
Background technique
In fluid circuit experimental provision process of construction, since impurity can be introduced due to welding, detect etc., these impurity meetings
Entire pipeline is impacted, such as makes impeller of pump by impact injury, or even will affect circuit operational safety, such as in order to protect
The safety of pump, it is necessary to install filter device in pump front end.On the other hand, for the Natural Circulation experimentation in core field, one
As require the fluid resistance of filter device low as far as possible, to improve natural circulation flow.
In the prior art, filter device be a kind of widely used pipe fitting, use mostly with impurity mistake when stable operation
Filter is application, therefore using the drag characteristic for being then easily plugged and influencing entire pipeline in debugging process, in the prior art
Processing mode be repeatedly to be cleaned to filter device, it is known that entire pipeline being capable of reliability service in pipeline debugging.Together
When, existing filter device does not consider resistance problem, and is difficult to assess its chocking-up degree.
The structure design of existing filter device is advanced optimized, so that fluid circuit debugging is more readily accomplished, it is this field
Technical staff's technical problem urgently to be resolved.
Summary of the invention
For the structure design for advanced optimizing existing filter device set forth above, so that fluid circuit debugging is easier to
It completes, is those skilled in the art's technical problem urgently to be resolved, the present invention provides a kind of analog pipe resistance characteristics
Pump intake filter device and analogy method.The structure design of the filter device, which not only facilitates, realizes tamper cleaning, while can
Realize that pipe resistance characteristic is adjusted, and the cleaning and adjusting can simultaneously operatings；The analogy method is the drag characteristic
Adjusting method.
In view of the above-mentioned problems, pump intake filter device and the simulation of a kind of analog pipe resistance characteristic provided by the invention
Method is solved the problems, such as by following technical essential: a kind of pump intake filter device of analog pipe resistance characteristic, including two
Section pipe fitting, is connected with connecting flange on each pipe fitting at least one end, and two sections of pipe fittings pass through the connecting flange method on respectively
Orchid connection, further includes the net-filter assembly being clamped between two pipe fittings, and the net-filter assembly includes plate ring annular in shape and is in pocket
The strainer of shape, the plate ring are clamped between the connecting pin of two pipe fittings, and the strainer includes filter screen and bottom support ring, institute
State that bottom support ring is annular in shape, the open end of the filter screen is connected on the inside of bottom support ring, and on plate ring in
It is being flowed as the channel being connected between two pipe fittings, the extending direction of the support ring along the circumferential direction of filter screen in heart hole
On body flow direction, plate ring is clamped between plate ring and the end face of downstream pipe fitting, and filter screen is partially or fully located at downstream
In pipe fitting；
It further include the manometric module being connected on pipe joint, the manometric module is used to measure the pressure of net-filter assembly two sides
Difference.
Filter device provided above is connected in corresponding fluid circuit when specifically used, can be applied to pipeline simultaneously
Debugging stage and stable operation stage.The filter screen in net-filter assembly is set as in pocketed, in this way, the filter area of filter screen
Greatly, being not easy to be completely plugged when in use influences pipeline equipment safety；Meanwhile it being set as filter screen and passing through the bottom on its open end
Portion's support ring is clamped between plate ring and downstream pipe fitting, and filter screen disassembly and installation is convenient, due to having thereon in the miscellaneous of pocketed
Matter accommodation space, therefore use the pipeline easy to clean of this filter device.Structure is simple simultaneously, flow resistance very little, and can be according to experiment
It is required that adjusting resistance: in the present solution, channel of the centre bore of the plate ring as two pipe fittings of connection, while the clamping installation of plate ring
On this filter device, by replace have different centre bore apertures plate ring, that is, may make filter device resistance coefficient or
Drag characteristic changes, therefore plate ring itself is used as a drag characteristic regulating member, eliminates the installation of additional friction part, no
Cost is only saved, due to strainer and fit system of the plate ring on this filter device, so that cleaning strainer and the entire pipe of change
The drag characteristic on road can simultaneously operating, in this way, maintenance can be effectively improved and adjust the efficiency of this filter device.
Meanwhile further including manometric module in this programme, when the present apparatus is used on fluid circuit, pass through the survey pressure group
The pressure drop or pressure difference that part obtains can reflect that plate ring to the knots modification of the drag characteristic of entire pipeline, that is, passes through monitoring strainer
The pressure difference of component two sides changes, and gives and filter device chocking-up degree and/or plate ring is quantitatively evaluated on the influence of pipe resistance characteristic
Evaluation method, can be used for pipeline construction period auxiliary piping string and wash, in pipeline operation phase real-time monitoring, auxiliary judgment pipeline
In whether have pipeline abnormal, in respective line for when simulating other pipelines fluid trafficability performance, enabling using this programme
Enough pipeline is modeled suitable for different.
Compared with existing filter device, major advantage is that any position at pump intake can be directly arranged at, flow
Path is shorter, simple structure, thus flow resistance is lower；Filter area is big, disposable filtering and can collect a large amount of impurity, be not easy
It is blocked when string is washed by impurity such as a large amount of iron filings, while installing, dismantle and clearing up simplicity；It can be by adjustable plate ring inner diameter size to this
The fluid passage resistance of device is adjusted, and to pump roadlock power demand in matching experiment, eliminates the installation of additional friction part, saves
Cost is saved；It is measured based on inlet outlet pressure differential, gives the method for assessment filter device chocking-up degree, can refer to lead back to road string and wash,
And monitoring is operating abnormally for circuit.
The further technical solution of pump intake filter device as the analog pipe resistance characteristic:
As noted previously, as this programme when in use, is related to the cleaning of strainer and the replacement of plate ring, to reduce connection method
Influence of the orchid to operating above, setting are as follows: each connecting flange is threaded in the outside of corresponding pipe joint.Using this programme,
It, can be by being rotatablely connected flange, so that two connecting flange relative motions are connected with increasing when being filtered the demolition, installation of net and plate ring
Between acting flange can operating space.
To increase the rigidity of strainer when in use, so that it does not influence the stream that the present apparatus passes through it when in use as far as possible
The flow behavior of body, setting are as follows: the strainer further includes bracket and top braces ring, the bracket, top braces ring, bottom branch
Pushing out ring three is fixedly connected, and top braces ring is connected to the bottom end of filter screen, and bracket is in caged, and the bracket is as filter screen
The rigid rack body of side, rigid rack body of the top braces ring as filtering sieve bottom.
As a kind of plate loop technique scheme for facilitating positioning and sealing, setting are as follows: the plate ring is in lens cushion, each to take over
The connecting pin end surface shape of head and the end surface shape of bottom support ring are matched with the side view of plate ring.
As the specific implementation form of manometric module, setting are as follows: the manometric module includes being connected to different pipes to connect
Pressure pipe on head and the pressure sensor being connected on each pressure pipe.
As a kind of technical solution with long service life, the plate ring, bottom support ring, that is, filter screen material are not
Become rusty steel.
Foreign matter in fluid circuit is collected by filter screen as a kind of convenience, to facilitate foreign matter in cleaning fluid circuit in time
Technical solution, setting are as follows: the pipe fitting is vertically-mounted, and flow direction of the fluid in pipe fitting is and mistake from top to bottom
The open end of strainer is upward.
Filtering web form that is big as a kind of filter area and facilitating demolition, installation, the length of the filter screen are L, and 3D≤L
≤ 5D, the D are the internal diameter of pipe fitting.
The technical solution of welding slag etc. can be effectively filtered as one kind, the mesh number of filter hole is 90 to 120 on the filter screen
Mesh.
Meanwhile this programme also discloses a kind of analogy method of analog pipe resistance characteristic, comprising the following steps:
Obtain K*And Km:
The resistance coefficient value K reached needed for being determined on pump road pipeline according to setting operating condition*, calculation method are as follows:
In above formula, ρ is fluid density, Δ PsFor pressure drop design value, A under design conditions1For the fluid circulating face of pipe fitting
Product, WsFor metered flow under design conditions；
It sets consistent with pipe joint internal diameter for plate ring internal diameter, respective pump road is measured by manometric module under design conditions
Pressure drop Δ PmAnd flow W1, then roadlock force coefficient K is pumped at this timeM,And specifically:
Obtain resistance coefficient difference Kk: Kk=K*-Km；
The KkTo need increased resistance coefficient after adjustable plate ring internal diameter, according to KkAfter plate ring can be calculated should adjusting
Internal diameter, circular is as follows:
Wherein, D0For the internal diameter of plate ring, A0For plate ring circulation area, L0For plate ring thickness, Γ is form factor, and λ is experience
Coefficient, Re are Reynolds number at plate ring, and μ is fluid kinematic viscosity.Using above scheme, pass through the K of acquisitionkValue, can effectively obtain
The inner diameter values D of plate ring0, while being designed by the structure of the above filter device, it can easily replace and be suitable for being modeled pipeline
Plate ring.
The invention has the following advantages:
Filter device provided above is connected in corresponding fluid circuit when specifically used, can be applied to pipeline simultaneously
Debugging stage and stable operation stage.The filter screen in net-filter assembly is set as in pocketed, in this way, the filter area of filter screen
Greatly, being not easy to be completely plugged when in use influences pipeline equipment safety；Meanwhile it being set as filter screen and passing through the bottom on its open end
Portion's support ring is clamped between plate ring and downstream pipe fitting, and filter screen disassembly and installation is convenient, due to having thereon in the miscellaneous of pocketed
Matter accommodation space, therefore use the pipeline easy to clean of this filter device.Structure is simple simultaneously, flow resistance very little, and can be according to experiment
It is required that adjusting resistance: in the present solution, channel of the centre bore of the plate ring as two pipe fittings of connection, while the clamping installation of plate ring
On this filter device, by replace have different centre bore apertures plate ring, that is, may make filter device resistance coefficient or
Drag characteristic changes, therefore plate ring itself is used as a drag characteristic regulating member, eliminates the installation of additional friction part, no
Cost is only saved, due to strainer and fit system of the plate ring on this filter device, so that cleaning strainer and the entire pipe of change
The drag characteristic on road can simultaneously operating, in this way, maintenance can be effectively improved and adjust the efficiency of this filter device.
Meanwhile further including manometric module in this programme, when the present apparatus is used on fluid circuit, pass through the survey pressure group
The pressure drop or pressure difference that part obtains can reflect that plate ring to the knots modification of the drag characteristic of entire pipeline, that is, passes through monitoring strainer
The pressure difference of component two sides changes, and gives and filter device chocking-up degree and/or plate ring is quantitatively evaluated on the influence of pipe resistance characteristic
Evaluation method, can be used for pipeline construction period auxiliary piping string and wash, in pipeline operation phase real-time monitoring, auxiliary judgment pipeline
In whether have pipeline abnormal, in respective line for when simulating other pipelines fluid trafficability performance, enabling using this programme
Enough pipeline is modeled suitable for different.
Compared with existing filter device, major advantage is that any position at pump intake can be directly arranged at, flow
Path is shorter, simple structure, thus flow resistance is lower；Filter area is big, disposable filtering and can collect a large amount of impurity, be not easy
It is blocked when string is washed by impurity such as a large amount of iron filings, while installing, dismantle and clearing up simplicity；It can be by adjustable plate ring inner diameter size to this
The fluid passage resistance of device is adjusted, and to pump roadlock power demand in matching experiment, eliminates the installation of additional friction part, saves
Cost is saved；It is measured based on inlet outlet pressure differential, gives the method for assessment filter device chocking-up degree, can refer to lead back to road string and wash,
And monitoring is operating abnormally for circuit.
Using above method, pass through the K of acquisitionkValue, can effectively obtain the inner diameter values D of plate ring0, while by filtering above
The structure of device designs, and can easily replace the plate ring for being suitable for being modeled pipeline.
Detailed description of the invention
Fig. 1 is a kind of one specific embodiment of pump intake filter device of analog pipe resistance characteristic of the present invention
Cross-sectional view, in the cross-sectional view, shown arrow direction is to circulate across the flow direction of the present apparatus；
Fig. 2 is a kind of one specific embodiment of pump intake filter device of analog pipe resistance characteristic of the present invention
In, reflect the schematic diagram of plate ring and the strainer matching relationship under filter device use state；
Fig. 3 is a kind of one specific embodiment of pump intake filter device of analog pipe resistance characteristic of the present invention
In, reflect the side view of filter structure.
Figure acceptance of the bid note is respectively as follows: 1, manometric module, 2, pipe fitting, 3, connecting flange, 4, stud, 5, nut, 6, strainer group
Part, 7, plate ring, 8, bracket, 9, filter screen, 10, top braces ring, 11, bottom support ring.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, but the present invention is not limited only to following implementation
Example:
Embodiment 1:
As shown in Figure 1 to Figure 3, a kind of pump intake filter device of analog pipe resistance characteristic, including two sections of pipe fittings
2, it is connected with connecting flange 3 on each pipe fitting 2 at least one end, two sections of pipe fittings 2 are connected by 3 flange of connecting flange on respectively
It connects, further includes the net-filter assembly 6 being clamped between two pipe fittings 2, the net-filter assembly 6 includes plate ring 7 annular in shape and is in pocket
The strainer of shape, the plate ring 7 are clamped between the connecting pin of two pipe fittings 2, and the strainer includes filter screen 9 and bottom support ring
11, the bottom support ring 11 is annular in shape, and the open end of the filter screen 9 is connected on the inside of bottom support ring 11, and
Centre bore on plate ring 7 is as the channel being connected between two pipe fittings 2, and the extending direction of the support ring is along filter screen 9
Circumferential direction, on fluid flow direction, plate ring 7 is clamped between plate ring 7 and the end face of downstream pipe fitting 2,9 part of filter screen
Or it is entirely located in the pipe fitting 2 in downstream；
It further include the manometric module 1 being connected on pipe joint, the manometric module 1 is for measuring 6 two sides of net-filter assembly
Pressure difference.
Filter device provided above is connected in corresponding fluid circuit when specifically used, can be applied to pipeline simultaneously
Debugging stage and stable operation stage.The filter screen 9 in net-filter assembly 6 is set as in pocketed, in this way, the filtering surface of filter screen 9
Product is big, and being not easy to be completely plugged when in use influences pipeline equipment safety；Meanwhile it being set as filter screen 9 and passing through on its open end
Bottom support ring 11 be clamped between plate ring 7 and downstream pipe fitting 2, the disassembly and installation of filter screen 9 is convenient, is in due to having thereon
The impurity accommodation space of pocketed, therefore use the pipeline easy to clean of this filter device.Structure is simple simultaneously, flow resistance very little, and can
Resistance is adjusted according to requirement of experiment: in the present solution, channel of the centre bore of the plate ring 7 as two pipe fittings 2 of connection, while plate
The clamping of ring 7 is installed on this filter device, is had the plate ring 7 in different centre bore apertures by replacing, that is, be may make filter device
Resistance coefficient or drag characteristic change, therefore plate ring 7 itself be used as a drag characteristic regulating member, eliminate additional resistance
The installation of power part, not only saves cost, due to strainer and fit system of the plate ring 7 on this filter device, so that cleaning filter
Net and change entire pipeline drag characteristic can simultaneously operating, in this way, maintenance can be effectively improved and adjust the effect of this filter device
Rate.
Meanwhile further including manometric module 1 in this programme, when the present apparatus is used on fluid circuit, pressed by the survey
The pressure drop or pressure difference that component 1 obtains, can reflect that plate ring 7 to the knots modification of the drag characteristic of entire pipeline, that is, passes through monitoring
The pressure difference of 6 two sides of net-filter assembly changes, and gives and filter device chocking-up degree and/or plate ring 7 is quantitatively evaluated to pipe resistance spy
Property influence evaluation method, can be used for pipeline construction period auxiliary piping string washes, in pipeline operation phase real-time monitoring, and auxiliary is sentenced
Whether exception is had in disconnected pipeline, when respective line is used to simulate other pipelines fluid trafficability performance, so that using this programme
Pipeline can be modeled pipeline suitable for different.
Compared with existing filter device, major advantage is that any position at pump intake can be directly arranged at, flow
Path is shorter, simple structure, thus flow resistance is lower；Filter area is big, disposable filtering and can collect a large amount of impurity, be not easy
It is blocked when string is washed by impurity such as a large amount of iron filings, while installing, dismantle and clearing up simplicity；7 inner diameter size pair of adjustable plate ring can be passed through
The fluid passage resistance of the present apparatus is adjusted, and to pump roadlock power demand in matching experiment, eliminates the installation of additional friction part,
Save cost；It is measured based on inlet outlet pressure differential, gives the method for assessment filter device chocking-up degree, can refer to lead back to road string
It washes, and is operating abnormally monitoring for circuit.
Preferably, for the connection bolt between connecting flange 3, it may be configured as each connection bolt and be all made of as studs
Stud 4 cooperate the forms of two nuts 5, within the scope of pipeline pressure-bearing, so that 7 position in-line pressure of plate ring is bigger
In the case of obtain better seal reliability.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1 to Figure 3, as noted previously, as this
Scheme when in use, is related to the cleaning of strainer and the replacement of plate ring 7, to reduce influence of the connecting flange 3 to operating above, if
Be set to: each connecting flange 3 is threaded in the outside of corresponding pipe joint.Using this programme, it is being filtered net 9 and plate ring 7
Demolition, installation when, can by be rotatablely connected flange 3 so that two connecting flanges, 3 relative motion with increase between connecting flange 3 can
Operating space.
To increase the rigidity of strainer when in use, so that it does not influence the stream that the present apparatus passes through it when in use as far as possible
The flow behavior of body, setting are as follows: the strainer further includes bracket 8 and top braces ring 10, the bracket 8, top braces ring 10,
11 three of bottom support ring is fixedly connected, and top braces ring 10 is connected to the bottom end of filter screen 9, and bracket 8 is in caged, the branch
Rigid rack body of the frame 8 as 9 side of filter screen, rigid rack body of the top braces ring 10 as 9 bottom of filter screen.
As a kind of 7 technical solution of plate ring for facilitating positioning and sealing, setting are as follows: the plate ring 7 is in lens cushion, is respectively connect
The connecting pin end surface shape of tube head and the end surface shape of bottom support ring 11 are matched with the side view of plate ring 7.
As the specific implementation form of manometric module 1, setting are as follows: the manometric module 1 includes being connected to different pipes
Pressure pipe on connector 2 and the pressure sensor being connected on each pressure pipe.
As a kind of technical solution with long service life, the plate ring 7, bottom support ring 11 are that the material of filter screen 9 is equal
For stainless steel.
Foreign matter in fluid circuit is collected by filter screen 9 as a kind of convenience, it is different in cleaning fluid circuit in time to facilitate
The technical solution of object, setting are as follows: the pipe fitting 2 is vertically-mounted, flow direction of the fluid in pipe fitting 2 be from top to bottom,
And the open end of filter screen 9 is upward.
9 form of filter screen that is big as a kind of filter area and facilitating demolition, installation, the length of the filter screen 9 are L, and 3D
≤ L≤5D, the D are the internal diameter of pipe fitting 2.
The technical solution of welding slag etc. can be effectively filtered as one kind, the mesh number of filter hole is 90 to 120 on the filter screen 9
Mesh.
Embodiment 3:
The present embodiment provides a kind of analogy methods of analog pipe resistance characteristic, comprising the following steps:
Obtain K*And Km:
The resistance coefficient value K reached needed for being determined on pump road pipeline according to setting operating condition*, calculation method are as follows:
In above formula, ρ is fluid density, Δ PsFor pressure drop design value, A under design conditions1For the fluid circulating face of pipe fitting 2
Product, WsFor metered flow under design conditions；
It sets consistent with pipe joint internal diameter for 7 internal diameter of plate ring, respective pump is measured by manometric module 1 under design conditions
Road pressure drop Δ PmAnd flow W1, then roadlock force coefficient K is pumped at this timeM,And specifically:
Obtain resistance coefficient difference Kk: Kk=K*-Km；
The KkTo need increased resistance coefficient after 7 internal diameter of adjustable plate ring, according to KkPlate ring 7, which can be calculated, to be adjusted
Internal diameter afterwards, circular are as follows:
Wherein, D0For the internal diameter of plate ring 7, A0For 7 circulation area of plate ring, L0For 7 thickness of plate ring, Γ is form factor, and λ is
Empirical coefficient, Re are Reynolds number at plate ring 7, and μ is fluid kinematic viscosity.Using above scheme, pass through the K of acquisitionkValue, can be effective
Obtain the inner diameter values D of plate ring 70, while being designed by the structure of the above filter device, it can easily replace and be suitable for being modeled pipe
The plate ring 7 on road.
In the specific implementation, German-style metal lensring internal diameter is adjusted to D0, the pressure drop Δ p on measurement pump road under base operation conditionm,
As Δ pmWith pressure drop design value Δ psDeviation is met the requirements within ± 5%.As Δ pmWith pump road pressure drop design value Δ psDeviation
At ± 5% or more, bore size D is finely tuned0And duplicate measurements, until Δ pmWith Δ psDeviation is within ± 5%.
It can be measured by filter device inlet outlet pressure differential and implement assessment filter device chocking-up degree, it is auxiliary in the plant construction stage
Circuit string is helped to wash；Whether there is exception in operation phase real-time monitoring, auxiliary judgment circuit.Specific appraisal procedure and step are such as
Under:
1) pressure-measuring-point that filter device front and back end is arranged is connected to differential pressure pickup, exports pressure difference.
2) string washes the stage after the completion of circuit is built, and stage impurity due to welding etc. is more.Just when starting pump, survey
Obtaining pressure difference is Δ P1, after continuous operation pumps some time, comprehensively consider economy and circuit safety, definition, which is worked as, measures pressure difference
ΔP2≥1.3ΔP1For occlusion threshold, dismantles after net-filter assembly is cleaned out and reinstall at this time.Again pump is opened, is repeated the above process,
Until Δ P when pump continuous operation2It is consistently less than 1.3 Δ P1, and pressure difference deviation shows that circuit is miscellaneous within 2% in a hour
Basic filtering is clean for matter.It dismounts again at this time and cleans net-filter assembly.
3) it is Δ P that pressure difference is measured in the operation phase, stable operationw, pressure difference Δ P is measured after longtime runningc>
1.05ΔPw, show to have collected more impurity in strainer, net-filter assembly can be cleared up.In addition, pressure difference is at 1 point in the operational process
5% is flown up within clock, then shows that circuit is operating abnormally, there are a large amount of impurity to generate.Device can be closed at this time and dismantles cleaning
Strainer, even if checking that simultaneously treatment loop is abnormal.
The above content is combine specific preferred embodiment to the further description of the invention made, and it cannot be said that originally
The specific embodiment of invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs,
The other embodiments obtained in the case where not departing from technical solution of the present invention, should be included within the scope of the present invention.
Claims (10)
1. a kind of pump intake filter device of analog pipe resistance characteristic, including two sections of pipe fittings (2), each pipe fitting (2) is extremely
It is connected on rare one end connecting flange (3), two sections of pipe fittings (2) pass through connecting flange (3) flanged joint on respectively, also wrap
Include the net-filter assembly (6) being clamped between two pipe fittings (2), which is characterized in that the net-filter assembly (6) includes plate annular in shape
Ring (7) and the strainer in pocketed, the plate ring (7) are clamped between the connecting pin of two pipe fittings (2), and the strainer includes filtering
Net (9) and bottom support ring (11), the bottom support ring (11) is annular in shape, and the open end of the filter screen (9) is connected to
On the inside of bottom support ring (11), and the centre bore on plate ring (7) is as the channel being connected between two pipe fittings (2), described
The extending direction of support ring (11) is along the circumferential direction of filter screen (9), and on fluid flow direction, plate ring (7) is clamped in plate
Between ring (7) and the end face of downstream pipe fitting (2), filter screen (9) is partially or fully in the pipe fitting (2) in downstream；
It further include the manometric module (1) being connected on pipe joint (2), the manometric module is for measuring net-filter assembly (6) two sides
Pressure difference.
2. a kind of pump intake filter device of analog pipe resistance characteristic according to claim 1, which is characterized in that each
Connecting flange (3) is threaded in the outside of corresponding pipe joint (2).
3. a kind of pump intake filter device of analog pipe resistance characteristic according to claim 1, which is characterized in that institute
Stating strainer further includes bracket (8) and top braces ring (10), the bracket (8), top braces ring (10), bottom support ring (11)
Three is fixedly connected, and top braces ring (10) is connected to the bottom end of filter screen (9), and bracket (8) is in caged, the bracket (8)
As the rigid rack body of filter screen (9) side, rigid rack body of the top braces ring (10) as filter screen (9) bottom.
4. a kind of pump intake filter device of analog pipe resistance characteristic according to claim 1, which is characterized in that institute
Plate ring (7) are stated in lens cushion, the connecting pin end surface shape of each pipe joint (2) and the end surface shape of bottom support ring (11) are equal
It is matched with the side view of plate ring (7).
5. a kind of pump intake filter device of analog pipe resistance characteristic according to claim 1, which is characterized in that institute
Stating manometric module (1) includes the pressure pipe being connected on different pipe fittings (2) and the pressure being connected on each pressure pipe
Sensor.
6. a kind of pump intake filter device of analog pipe resistance characteristic as claimed in any of claims 1 to 5,
It is characterized in that, the material of the plate ring (7), bottom support ring (11) i.e. filter screen (9) is stainless steel.
7. a kind of pump intake filter device of analog pipe resistance characteristic as claimed in any of claims 1 to 5,
It is characterized in that, the pipe fitting (2) is vertically-mounted, flow direction of the fluid in pipe fitting (2) is from top to bottom, and to filter
The open end of net (9) is upward.
8. a kind of pump intake filter device of analog pipe resistance characteristic as claimed in any of claims 1 to 5,
It is characterized in that, the length of the filter screen (9) is L, and 3D≤L≤5D, the D are the internal diameter of pipe fitting (2).
9. a kind of pump intake filter device of analog pipe resistance characteristic as claimed in any of claims 1 to 5,
It is characterized in that, the mesh number of filter hole is 90 to 120 mesh on the filter screen (9).
10. a kind of analogy method of analog pipe resistance characteristic, which comprises the following steps:
Obtain K*And Km:
The resistance coefficient value K reached needed for being determined on pump road pipeline according to setting operating condition*, calculation method are as follows:
In above formula, ρ is fluid density, Δ PsFor pressure drop design value, A under design conditions1For the fluid flow area of pipe fitting (2),
WsFor metered flow under design conditions；
It sets consistent with pipe joint (1) internal diameter for plate ring (7) internal diameter, phase is measured by manometric module (1) under design conditions
The road Ying Beng pressure drop Δ PmAnd flow W1, then roadlock force coefficient K is pumped at this timem, and specifically:
Obtain resistance coefficient difference Kk: Kk=K*-Km；
The KkTo need increased resistance coefficient after adjustable plate ring (7) internal diameter, according to KkPlate ring (7), which can be calculated, to be adjusted
Internal diameter afterwards, circular are as follows:
Wherein, D0For the internal diameter of plate ring (7), A0For plate ring (7) circulation area, L0For plate ring (7) thickness, Γ is form factor, λ
For empirical coefficient, Re is Reynolds number at plate ring (7), and μ is fluid kinematic viscosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910294496.0A CN109908649B (en) | 2019-04-12 | 2019-04-12 | Pump inlet filtering device capable of simulating pipeline resistance characteristic and simulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910294496.0A CN109908649B (en) | 2019-04-12 | 2019-04-12 | Pump inlet filtering device capable of simulating pipeline resistance characteristic and simulation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109908649A true CN109908649A (en) | 2019-06-21 |
| CN109908649B CN109908649B (en) | 2021-07-13 |
Family
ID=66969582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910294496.0A Active CN109908649B (en) | 2019-04-12 | 2019-04-12 | Pump inlet filtering device capable of simulating pipeline resistance characteristic and simulation method |
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| CN (1) | CN109908649B (en) |
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| CN115253442A (en) * | 2022-08-05 | 2022-11-01 | 北京博朗德科技有限公司 | Three-stage filter |
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| CN203822488U (en) * | 2014-02-18 | 2014-09-10 | 西安航天动力试验技术研究所 | Engine inlet filter for liquid-propellant rocket engine test |
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| CN106340329A (en) * | 2016-10-31 | 2017-01-18 | 中国核动力研究设计院 | Reactor thermal-hydraulic simulation testing apparatus and fluid dynamics characteristic simulation method |
| CN106803431A (en) * | 2017-01-22 | 2017-06-06 | 中国核动力研究设计院 | The external that can accurately measure core flow declines chamber arrangement apparatus and measuring method |
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| CN201470193U (en) * | 2009-04-21 | 2010-05-19 | 中国原子能科学研究院 | Filter |
| CN203822488U (en) * | 2014-02-18 | 2014-09-10 | 西安航天动力试验技术研究所 | Engine inlet filter for liquid-propellant rocket engine test |
| CN104492151A (en) * | 2014-12-04 | 2015-04-08 | 北京航天试验技术研究所 | Cryogenic fluid filter used for liquid rocket power system tests |
| CN106340329A (en) * | 2016-10-31 | 2017-01-18 | 中国核动力研究设计院 | Reactor thermal-hydraulic simulation testing apparatus and fluid dynamics characteristic simulation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115253442A (en) * | 2022-08-05 | 2022-11-01 | 北京博朗德科技有限公司 | Three-stage filter |
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