CN108561586A - A kind of no clogging hydraulic pipe valve and design method - Google Patents
A kind of no clogging hydraulic pipe valve and design method Download PDFInfo
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- CN108561586A CN108561586A CN201810235203.7A CN201810235203A CN108561586A CN 108561586 A CN108561586 A CN 108561586A CN 201810235203 A CN201810235203 A CN 201810235203A CN 108561586 A CN108561586 A CN 108561586A
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- elastic pipeline
- pipeline
- hydraulic pipe
- rigid conduit
- pipe valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
- F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
- F16K7/07—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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Abstract
The invention belongs to field of fluid machinery, it is related to a kind of no clogging hydraulic pipe valve and design method, the valve body inner layer pipe of no clogging hydraulic pipe valve is elastic pipeline, outer layer pipe is rigid conduit, two flanges are separately positioned on the both ends of valve body, and be fixedly connected with elastic pipeline and rigid conduit, airtight chamber is formed between elastic pipeline, rigid conduit and two flanges, the hydraulics inlet being connected with chamber is offered on rigid conduit.The configuration of the present invention is simple, operation are easy, the flow in pipeline can be adjusted by adjusting the volume and pressure of the injection liquid in chamber, it can ensure when transporting solid-liquid two-phase flow without blocking in pipeline, and guarantee is provided for being smoothed out for pump solid-liquid two-phase flow experiment.
Description
Technical field
The present invention relates to field of fluid machinery, a kind of no clogging hydraulic pipe valve and design method are refered in particular to.
Background technology
Valve is the important composition device in solid-liquid two-phase flow test system.Currently, traditional valving be roughly divided into
Under it is several：Ball valve, butterfly valve, diaphragm valve, plug valve and plunger valve etc., internal structure is all complex, is carrying out solid-liquid two-phase
When stream experiment, control valve easily makes solid phase be trapped at valve, especially when solid phase scale is larger, leads to system jams.Therefore,
It is necessary to invent a kind of no clogging hydraulic pipe valve structure, optimize the valving of solid-liquid two-phase flow pilot system, it not only can be fast
Speed accurately adjusts the flow in pipeline, but also can ensure to improve test efficiency and test accuracy without blocking in pipeline.
So far, it there is no for patent disclosure of the solid-liquid two-phase flow without clogging hydraulic pipe valve design method, rarely seen minority
It is designed about pipeline block-resistant and Parallel Slide Valves without blocking.Exchange of technology《The design and application of oil tanker PV valve pipeline block-proof devices》
(2014) design has developed oil tanker PV valve pipeline block-proof devices, improves the reliability when work of PV valves.Science and technology in enterprise and development《Folder
The design of lengthening the life of pipe valve》(2009) the main reason for influencing the pinch valve service life is analyzed, and proposes a kind of pinch valve and lengthens the life knot
Structure design method.Machine design and manufacture《Parallel Slide Valves are designed without blocking》(1997) by changing back side shape and increasing stifled
There is the failure for throttling or shutting off in lid drain.
Invention content
In response to the deficiencies in the existing technology, the present invention provides a kind of no clogging hydraulic pipe valve and design methods, solve
Pipeline when conveying solid-liquid two-phase flow medium inside the problem of blocking.
The present invention achieves the above technical objects by the following technical means.
A kind of no clogging hydraulic pipe valve, including valve body and two flanges, the valve body includes inside and outside nested inner layer pipe
And outer layer pipe, the inner layer pipe are elastic pipeline, the outer layer pipe is rigid conduit, and two flanges are respectively set
It is fixedly connected at the both ends of valve body, and with elastic pipeline and rigid conduit, the elastic pipeline, rigid conduit and two flanges
Between form airtight chamber, the hydraulics inlet being connected with chamber is offered on the rigid conduit.
Preferably, the elastic pipeline and rigid conduit are coaxial.
Preferably, a pair of of hydraulics inlet is offered on the rigid conduit, a pair of hydraulics inlet is about rigid conduit
Axisymmetrical.
Preferably, respectively with the flange welding at both ends, the both ends of the elastic pipeline are embedded at the both ends of the rigid conduit
In U-lag on flange, it is solid by bolt that bolt hole, U-lag and elastic pipeline are correspondingly provided on the U-lag and elastic pipeline
Fixed connection.
A kind of design method of no clogging hydraulic pipe valve, includes the following steps：
Step 1：According to the internal diameter D of upstream test loopNThe dimensional parameters of design flexibility pipeline：
The internal diameter of the elastic pipeline is the internal diameter D of test loopN, the pipe thickness of the elastic pipeline is a, a=
0.025DN；
Step 2：The dimensional parameters of rigid conduit are designed according to the dimensional parameters of elastic pipeline：
The outer diameter of the rigid conduit is DW, pipe thickness b, DWMeet following relationship with b：
B=(0.04~0.06) DW (1)
DW- 2b=(1.25~1.5) DN (2)
D is calculated to obtain according to formula (2)W；
Step 3：It is determined on the outer surface of elastic pipeline according to the maximum deformation quantity of elastic pipeline under minimum discharge when experiment
Maximum pressure value Poutmax；
Step 4：The length L of the no clogging hydraulic pipe valve is determined according to the maximum deformation quantity of elastic pipeline.
Preferably, the step 3 is specially：
Flow Q=vA in the elastic pipeline 1, wherein Q are test flow, and v is flow velocity, and A is area of passage.Thus may be used
To know, elastic pipeline is maximum stream flow in its natural state, and flow reduces with area of passage and reduced, and is proportional to area of passage,
According to the design discharge coefficient κ of formula (3) and elastic pipeline central cross-section, the largest deformation amount δ of elastic pipeline is calculated,
I.e.
Wherein, κ be experiment when minimum discharge and maximum stream flow ratio, when elastic pipeline is indeformable by be exactly maximum
Flow；
For the elastic pipeline respectively to homogenous distribution, the shearing stress suffered by circumferential each point on same radial section is equal
, it is τ, meets following relationship：
δ=ε DN (4)
τmax=Ea[(1+ε)-(1+ε)-2]/3 (5)
Wherein, ε is the deformation coefficient of elastic pipeline central cross-section, EaFor the elasticity modulus of elastic pipeline；
τ is calculated to obtain according to formula (5)max, maximum pressure value of the value not less than elastic pipeline of maximum shear stress need to be met
Poutmax1.2 times, i.e., the described τmaxAnd PoutmaxMeet formula (6)：
τmax≥1.2Poutmax (6)。
Preferably, the step 4 is specially：
Without the length L for blocking pipe valve depending on deformation quantity needed for inner elastic pipeline, meet formula (5~6)：
I.e.
Wherein, S is form factor, and Δ A is area of passage variable quantity, Δ DNFor the diameter change amount of elastic pipeline 1, G bullets
The shear modulus of property pipeline.
Preferably, the diameter of bolt hole is r, r=2a.
Preferably, the thickness of the U-lag is equal to the wall thickness a, depth h, h=8a of elastic pipeline.
Preferably, the internal diameter of the hydraulics inlet is w=0.1DN, it is highly (0.35~0.45) DN, the flange thickness m
=4b.
Beneficial effects of the present invention：
1) the configuration of the present invention is simple, operation be easy, can by adjust toward chamber in injection liquid volume and pressure come
The flow in pipeline is adjusted, can be ensured when transporting solid-liquid two-phase flow without blocking in pipeline, and is pump solid-liquid two-phase flow examination
Being smoothed out for testing provides guarantee.
2) present invention determines structure size, install convenient, strong applicability according to pipeline size；
3) elastic pipeline is bolted in the present invention, and when material aging is readily disassembled replacements, reduction use cost；
4) the symmetrical hydraulic inlet of the present invention can guarantee uniform force, extend the service life of hydraulic pressure pipe valve.
Description of the drawings
Fig. 1 is a kind of axial, cross-sectional view of no clogging hydraulic pipe valve of the present invention.
Fig. 2 is the sectional view along A-A of Fig. 1.
Fig. 3 is the B-B direction sectional view of Fig. 1.
Fig. 4 is a kind of operating diagram of no clogging hydraulic pipe valve of the present invention.
In figure：
1. elastic pipeline；2. rigid conduit；3. hydraulics inlet；4 flanges；5 bolts hole；6 U-lags；7. chamber.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figs. 1-3, a kind of no clogging hydraulic pipe valve of the present invention includes valve body and two flanges 4, the valve
Body includes inside and outside nested inner layer pipe and outer layer pipe, and the inner layer pipe is elastic pipeline 1, and the outer layer pipe is rigidity
Pipeline 2, the elastic pipeline 1 and rigid conduit 2 are coaxial, and two flanges 4 are separately positioned on the both ends of valve body, for connecting both ends
Pipe-line system, the both ends of the rigid conduit 2 weld with the flange at both ends 4 respectively, and the both ends of elastic pipeline 1 are embedded in flange 4
On U-lag 6 in, to extend the working life of elastic pipeline, smooth fillet, U-lag 6 and elastic pipeline are led in the both ends of U-lag 6
Bolt hole 5 is correspondingly provided on 1, U-lag 6 and elastic pipeline 1 are bolted to connection, elastic pipeline 1, rigid conduit 2 and
Closed annular compartment 7 is formed between two flanges 4, and a pair of hydraulic pressure being connected with chamber 7 is offered on the rigid conduit 2 and is entered
Mouth 3, axisymmetrical of a pair of of the hydraulics inlet 3 about rigid conduit 2, it is ensured that uniform force, to extend without plugging fluid pressure pipe
The service life of valve.
A kind of design method of no clogging hydraulic pipe valve of the present invention, includes the following steps：
Step 1：According to the internal diameter D of test loopNThe parameter of 1 size of design flexibility pipeline：
The internal diameter of the elastic pipeline 1 is the internal diameter D of test loopNThe pipe thickness of=80mm, the elastic pipeline 1 is
A, a=0.025DN=2mm；The elastic modulus E of elastic pipeline 1a=7.84MPa, shear modulus G=1.95MPa；
Step 2：The dimensional parameters of rigid conduit 2 are designed according to the dimensional parameters of elastic pipeline 1：
The outer diameter of the rigid conduit 2 is DWOuter diameter as without clogging hydraulic pipe valve, pipe thickness b, DWMeet with b
Following relationship：
B=(0.04~0.06) DW (1)
DW- 2b=(1.25~1.5) DN (2)
B=5mm is obtained according to formula 1, D is calculated to obtain according to formula 2W=120mm；
The internal diameter of hydraulics inlet 3 is w=0.1DN=8mm is highly (0.35~0.45) DNTake 30mm.
Step 3：It is determined on the outer surface of elastic pipeline (1) according to the deflection of elastic pipeline 1 under minimum discharge when experiment
Maximum pressure value Poutmax；
As shown in figure 4, in liquid injecting chamber 7, hydraulic pressure is P to the pressure that the outer surface of elastic pipeline 1 appliesout,
PoutmaxThe maximum pressure that hydraulic pressure applies elastic pipeline outer surface is referred to, according to 1 central cross-section of formula (3) and elastic pipeline
Design discharge coefficient κ, calculate the largest deformation amount δ of elastic pipeline 1,
Wherein, the ratio of minimum discharge and maximum stream flow, κ=(0.4Q when κ is experimentd/1.6Qd)=0.25, by formula
(3) δ=40mm is obtained.
For the elastic pipeline 1 respectively to homogenous distribution, the shearing force suffered by circumferential each point on same radial section is phase
Deng being τ, the shearing stress suffered by circumferential each point on the central cross-section of central cross-section is τmax, meet following relationship：
δ=ε DN (4)
τmax=Ea[(1+ε)-(1+ε)-2]/3 (5)
Wherein, ε is the deformation coefficient of 1 central cross-section of elastic pipeline, EaFor the elasticity modulus of elastic pipeline 1；According to formula 4
ε=0.5 is calculated to obtain, τ is obtained by formula 5max=2.7585MPa.
To ensure the normal use of the elastic pipeline 1, the value of maximum shear stress need to be met most not less than elastic pipeline 1
Big pressure value Poutmax1.2 times, i.e. τmaxAnd PoutmaxMeet formula 6：
τmax≥1.2Poutmax (6)
PoutmaxMaximum occurrences are 2.298MPa.
Step 4：The length L of the no clogging hydraulic pipe valve is determined according to the maximum deformation quantity of elastic pipeline 1；
The calculation formula 7 of the length L of the no clogging hydraulic pipe valve：
Wherein, the shear modulus of G elastic pipelines 1, S are form factor, and S is calculated to obtain according to formula 7
S=94 × 10 are obtained by formula 83, L=272mm is obtained by formula 7.
4 thickness m=4b=20mm of flange in the present invention, a diameter of r, r=2a=4mm of bolt hole 5.The thickness of U-lag 6
Equal to the wall thickness a=2mm of elastic pipeline 1, depth h, h=8a=16mm.
The operating process of the present invention is as follows：
By hydraulics inlet 3 into chamber 7 injection pressure be higher than pumped (conveying) medium incompressible liquid, elastic pipeline 1 by
The radially inner side that is pressed against of incompressible liquid is expanded, and area of passage reduces, and plays throttling action, the process such as attached drawing 4
It is shown；The amount that liquid volume is injected by adjusting is that the area of passage of the elastic pipeline 1 is adjusted, and plays and changes stream in pipeline
The effect of amount.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of no clogging hydraulic pipe valve, which is characterized in that include valve body and two flanges (4), the valve body includes interior is externally embedded to
The inner layer pipe and outer layer pipe of set, the inner layer pipe be elastic pipeline (1), the outer layer pipe be rigid conduit (2), two
A flange (4) is separately positioned on the both ends of valve body, and is fixedly connected with elastic pipeline (1) and rigid conduit (2), the bullet
Property pipeline (1), airtight chamber (7) is formed between rigid conduit (2) and two flanges (4), opened up on the rigid conduit (2)
There is the hydraulics inlet (3) being connected with chamber (7).
2. no clogging hydraulic pipe valve structure according to claim 1, which is characterized in that the elastic pipeline (1) and rigidity
Pipeline (2) is coaxial.
3. no clogging hydraulic pipe valve structure according to claim 1 or 2, which is characterized in that opened on the rigid conduit (2)
Equipped with a pair of of hydraulics inlet (3), axisymmetrical of a pair of hydraulics inlet (3) about rigid conduit (2).
4. no clogging hydraulic pipe valve structure according to claim 1 or 2, which is characterized in that the two of the rigid conduit (2)
End is welded with the flange at both ends (4) respectively, and the both ends of the elastic pipeline (1) are described in the U-lag (6) on flange (4)
Bolt hole (5), U-lag (6) and elastic pipeline (1) company of being bolted are correspondingly provided on U-lag (6) and elastic pipeline (1)
It connects.
5. a kind of design method as claimed in claim 3 without clogging hydraulic pipe valve, which is characterized in that include the following steps：
Step 1：According to the internal diameter D of upstream test loopNThe dimensional parameters of design flexibility pipeline (1)：
The internal diameter of the elastic pipeline (1) is the internal diameter D of test loopN, the pipe thickness of the elastic pipeline (1) is a, a=
0.025DN；
Step 2：The dimensional parameters of rigid conduit (2) are designed according to the dimensional parameters of elastic pipeline (1)：
The outer diameter of the rigid conduit (2) is DW, pipe thickness b, DWMeet following relationship with b：
B=(0.04~0.06) DW (1)
DW- 2b=(1.25~1.5) DN (2)
D is calculated to obtain according to formula (2)W；
Step 3：The outer surface of elastic pipeline (1) is determined according to the maximum deformation quantity of elastic pipeline (1) under minimum discharge when experiment
On maximum pressure value Poutmax；
Step 4：The length L of the no clogging hydraulic pipe valve is determined according to the maximum deformation quantity of elastic pipeline (1).
6. the design method of no clogging hydraulic pipe valve according to claim 5, which is characterized in that the step 3 is specific
For：
According to the design discharge coefficient κ of formula (3) and elastic pipeline (1) central cross-section, the maximum shape of elastic pipeline (1) is calculated
Variable δ,
Wherein, the ratio of minimum discharge and maximum stream flow when κ is experiment, A are the area of passage of elastic pipeline (1)；
For the elastic pipeline (1) respectively to homogenous distribution, the shearing stress suffered by circumferential each point on same radial section is τ, is met
Following relationship：
δ=ε DN (4)
τmax=Ea[(1+ε)-(1+ε)-2]/3 (5)
Wherein, ε is the deformation coefficient of elastic pipeline (1) central cross-section, EaFor the elasticity modulus of elastic pipeline (1)；
τ is calculated to obtain according to formula (5)max, the τmaxAnd PoutmaxMeet formula (6)：
τmax≥1.2Poutmax (6)。
7. the design method of no clogging hydraulic pipe valve according to claim 6, which is characterized in that the step 4 is specific
For：
The calculation formula (7) of the length L of the no clogging hydraulic pipe valve：
Wherein, G is the shear modulus of elastic pipeline (1), and S is form factor, and S is calculated to obtain according to formula (8)
8. the design method of no clogging hydraulic pipe valve according to claim 5, which is characterized in that the bolt hole (5) is straight
Diameter is r, r=2a.
9. the design method of no clogging hydraulic pipe valve according to claim 5, which is characterized in that the thickness of the U-lag (6)
Wall thickness a, depth h, h=8a of the degree equal to elastic pipeline (1).
10. the design method of no clogging hydraulic pipe valve according to claim 5, which is characterized in that the hydraulics inlet (3)
Internal diameter be w=0.1DN, it is highly (0.35~0.45) DN, flange (4) the thickness m=4b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235203.7A CN108561586A (en) | 2018-03-21 | 2018-03-21 | A kind of no clogging hydraulic pipe valve and design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235203.7A CN108561586A (en) | 2018-03-21 | 2018-03-21 | A kind of no clogging hydraulic pipe valve and design method |
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| Publication Number | Publication Date |
|---|---|
| CN108561586A true CN108561586A (en) | 2018-09-21 |
Family
ID=63532940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810235203.7A Pending CN108561586A (en) | 2018-03-21 | 2018-03-21 | A kind of no clogging hydraulic pipe valve and design method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465415A (en) * | 2019-09-16 | 2019-11-19 | 上海锅炉厂有限公司 | A kind of telescopic air-flow spout and its design implement method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391051A (en) * | 2002-06-18 | 2003-01-15 | 吴忠仪表股份有限公司 | Multi-purpose electric valve |
| CN203604705U (en) * | 2013-10-24 | 2014-05-21 | 西安航天化学动力厂 | Straight-through type powder material rubber tube valve |
-
2018
- 2018-03-21 CN CN201810235203.7A patent/CN108561586A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1391051A (en) * | 2002-06-18 | 2003-01-15 | 吴忠仪表股份有限公司 | Multi-purpose electric valve |
| CN203604705U (en) * | 2013-10-24 | 2014-05-21 | 西安航天化学动力厂 | Straight-through type powder material rubber tube valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465415A (en) * | 2019-09-16 | 2019-11-19 | 上海锅炉厂有限公司 | A kind of telescopic air-flow spout and its design implement method |
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Application publication date: 20180921 |