CN208778978U - A kind of multistage current-limiting apparatus and current limliting pipeline - Google Patents
A kind of multistage current-limiting apparatus and current limliting pipeline Download PDFInfo
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- CN208778978U CN208778978U CN201821401064.2U CN201821401064U CN208778978U CN 208778978 U CN208778978 U CN 208778978U CN 201821401064 U CN201821401064 U CN 201821401064U CN 208778978 U CN208778978 U CN 208778978U
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- limiting apparatus
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- limiting
- multistage current
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Abstract
The utility model belongs to pipeline technical field, specifically discloses a kind of multistage current-limiting apparatus and current limliting pipeline.Multistage current-limiting apparatus disclosed by the utility model is tubular structure, and multistage current-limiting apparatus is arranged inside fluid circuit, and multistage current-limiting apparatus is detachably connected with pipeline.Current limliting pipeline current limiting tube road disclosed by the utility model includes above-mentioned multistage current-limiting apparatus and fluid circuit, and multistage current-limiting apparatus is co-axially located at the inside of fluid circuit.Multistage current-limiting apparatus and current limliting pipeline disclosed by the utility model, dismounting to current limliting pipeline and easy to maintain, the maintenance and replacement for being conducive to multistage current-limiting apparatus and current limliting pipeline improve the versatility and applicability of multistage current-limiting apparatus and current limliting pipeline, reduce process complexity.
Description
Technical field
The utility model relates to pipeline technical field more particularly to a kind of multistage current-limiting apparatus and current limliting pipeline.
Background technique
It is related to work in natural gas production, petrochemical industry and oil refining process, fuel gas conveying and chemical logistic balance system etc.
The field of skill fluid flowing, often carries out decompression current limliting to fluid in runner using current-limiting apparatus.
Current-limiting apparatus is generally divided into single-stage current-limiting apparatus and multistage current-limiting apparatus.Single-stage current-limiting apparatus refers to only comprising a limit
The device of discharge orifice plate, and general restriction orifice is mounted between two flange faces of fluid line.Multistage current-limiting apparatus, which refers to, to flow
The different restriction orifice in multiple apertures is set on body pipeline.Fig. 1 is a kind of structure of multistage current-limiting apparatus disclosed in the prior art
Schematic diagram, as shown in Figure 1, multistage current-limiting apparatus 100 disclosed in the prior art includes straight tube component 150, is separately positioned on straight tube
The first flange component 110 and second flange component 130 and metering hole board group 170 at 150 both ends of component, metering hole board group 170
Including regulating orifice plate 171 and multiple restriction orifices 173, regulating orifice plate 171 is weldingly fixed on two of first flange component 110
Between flange, straight tube component 150 is welded by multiple straight pipes and is formed, and current limiting is respectively welded in welding between two neighboring straight pipe
Orifice plate 173 is provided with metering hole 1731 on restriction orifice, and the aperture of the metering hole 1731 of multiple restriction orifices is along fluid stream
Dynamic direction is sequentially reduced, with the whole effect for realizing multistage current limliting and decompression.
Single-stage current-limiting apparatus and multistage current-limiting apparatus, either restriction orifice is arranged in flange, or by metering hole
Plate is arranged in channel interior, is to install by welding to restriction orifice.When the maintenance of multistage current-limiting apparatus or more
It when changing, needs to cut pipeline and pipeline is welded again, make the replacement and maintenance trouble of restriction orifice, and interface is easy
Occur the security risks such as corroding or reveal.Add particularly with multistage current-limiting apparatus due to being related to the welded connecting of multiple line segments
Work trouble, increases process complexity, and the presence of multiple welding junctions further increases the risk of fluid leakage in pipeline；And one
Denier is related to the change of current limliting pipeline, then need that multistage current limliting pipeline is cut and re-worked, not only restriction orifice
Maintenance and replacement trouble, it is easier to scrapping for pipeline is caused, to cause the waste of resource.
Utility model content
One of the purpose of this utility model is to provide a kind of multistage current-limiting apparatus, so that multistage current-limiting apparatus is in pipeline
It is quick for installation, conveniently, and be easy to the maintenance and replacement of multistage current-limiting apparatus, improve the safety of multistage current-limiting apparatus.
The another object of the utility model is to provide a kind of current limliting pipeline, the mounting process of raising current limliting pipeline, side
Just the maintenance and replacement of current limliting pipeline, and improve the safety of current limliting pipeline.
To achieve the above object, the utility model adopts the following technical solutions:
A kind of multistage current-limiting apparatus, the multistage current-limiting apparatus is tubular structure, and the multistage current-limiting apparatus setting is being flowed
Body channel interior, and the current-limiting apparatus is detachably connected with the fluid circuit.
Further, the multistage current-limiting apparatus includes:
At least two limiting blocks are arranged along the length direction interval of the fluid circuit, and the limiting block is along the fluid
The length direction of pipeline opens up restricted orifice, and the current limliting of upstream is less than positioned at the metering hole aperture of the limiting block in downstream
The metering hole aperture of block, and the multistage current-limiting apparatus is tightly connected close to fluid circuit described in one end of the fluid inlet；
Connecting conduit is connected between the two neighboring limiting block.
Further, further includes:
Locating piece is arranged in the described one end of multistage current-limiting apparatus far from the fluid inlet, opens up on the locating piece
There is fluid channel.
Further, further includes:
Diversion pipe, one end are connect with the limiting block near fluid outlet, and the other end is connect with the locating piece,
The outer diameter of the diversion pipe is less than the internal diameter of the fluid circuit, is spaced apart on the peripheral wall of the diversion pipe and is equipped with multiple water conservancy diversion
Hole, the area of the deflector hole are less than the area of the metering hole, and the diversion pipe connect closed at one end with the locating piece；
The fluid channel is the diversion trench being provided on the locating piece outer wall.
Further, the axial direction of the diversion pipe is provided with multiple rows of deflector hole group, and deflector hole group described in every row includes along institute
State multiple deflector holes of the length direction uniform intervals setting of diversion pipe.
Further, the connecting conduit is detachably connected with the limiting block.
Further, the multistage current-limiting apparatus offers internal screw thread close to one end of the fluid inlet.
A kind of current limliting pipeline, including multistage current-limiting apparatus as described above, the multistage current-limiting apparatus are co-axially located at institute
It states in fluid circuit.
Further, one end far from the fluid inlet of the current limliting pipeline is provided with elbow；
The multistage current-limiting apparatus is interference fitted close to one end of the fluid inlet and the fluid circuit, the multistage
The other end of current-limiting apparatus is fastened in the elbow.
Further, the fluid circuit is provided with flange close to one end of the fluid inlet, on the flange inner wall
Or one end in the fluid circuit close to the fluid inlet is provided with retaining ring；
It is provided with circular orientation step in the limiting block of the fluid inlet, the circular orientation step is separate
The step surface of the fluid inlet is abutted with the retaining ring, and the outer diameter of the circular orientation step is greater than the internal diameter of the retaining ring.
The utility model has the beneficial effects that:
Multistage current-limiting apparatus provided by the utility model, by being arranged multistage current-limiting apparatus inside fluid circuit, and
It is detachably connected at least one end of multistage current-limiting apparatus with fluid circuit, allows multistage current-limiting apparatus by protruding into or extracting out
The installation, disassembly and replacement that multistage current-limiting apparatus can be realized inside fluid circuit, when the pressure for needing to redefine fluid circuit
When lower limit flow rate, it is only necessary to multistage current-limiting apparatus is taken out and be replaced, be modified without fluid pipe road, Ji Keshi
The effect of the different pressure drop current limlitings of existing same fluid circuit improves the versatility of fluid circuit and multistage current-limiting apparatus and fits
With property, the installation and removal for avoiding the restriction orifice caused by setting restriction orifice at the connecting flange of fluid circuit are troublesome
Problem, and not will increase the security risks such as fluid circuit corrosion and leakage.Simultaneously as not needing individually to pacify multistage current limiting plate
Dress is fixed on inside fluid circuit, is simplified the processing of fluid circuit, is reduced the process complexity of multistage current-limiting apparatus.
Current limliting pipeline provided by the utility model can be risen by the way that above-mentioned multistage current-limiting apparatus is arranged inside fluid circuit
To good decompression metering function, and the installation, maintenance of current limliting pipeline and replacement are convenient, simplify the processing of current limliting pipeline, mention
The high versatility and replaceability of each part of current limliting pipeline.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the multistage current-limiting apparatus that the prior art provides.
Fig. 2 is the structural schematic diagram of multistage current-limiting apparatus provided by the embodiment of the utility model；
Fig. 3 is the schematic diagram of internal structure of current limliting pipeline provided by the embodiment of the utility model；
Fig. 4 is the cross-sectional view of current limliting pipeline provided by the embodiment of the utility model；
Fig. 5 is the partial enlarged view in Fig. 4 at I.
It is marked in figure as follows:
100- multistage current-limiting apparatus；150- straight tube component；110- first flange component；130- second flange component； 170-
Metering hole board group；171- regulating orifice plate；173- restriction orifice；1731- metering hole；
10- multistage current-limiting apparatus；20- current limliting pipeline；
2- connecting conduit；3- diversion pipe；4- locating piece；
The first limiting block of 11-；The second limiting block of 12-；13- third limiting block；The first connecting conduit of 21-；22- second connects
Connect conduit；31- deflector hole；41- diversion trench；
111- circular orientation step；201- fluid circuit；202- elbow；203- flange；204- retaining ring.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant to the utility model is illustrated only for ease of description, in attached drawing rather than entire infrastructure.
Fig. 2 is the structural schematic diagram of multistage current-limiting apparatus 10 provided in this embodiment, and Fig. 3 provides for utility model embodiment
The structural schematic diagram of current limliting pipeline 20 present embodiments provide a kind of current limliting pipeline 20, including fluid hose as shown in Figures 2 and 3
Road 201 and the multistage current-limiting apparatus 10 being arranged in fluid circuit 201.Multistage current-limiting apparatus 10 is tubular structure, and multistage limits
Stream device 10 is detachably connected with fluid circuit 201.The present embodiment is by being arranged multistage current-limiting apparatus 10 in fluid circuit 201
Inside, and be detachably connected multistage current-limiting apparatus 10 with fluid circuit 201 allows multistage current-limiting apparatus 10 by protruding into
Or installation, disassembly and the replacement of multistage current-limiting apparatus 10 can be realized inside extraction fluid circuit 201, when needs redefine stream
When the pressure drop current limliting rate of body pipeline 201, it is only necessary to multistage current-limiting apparatus 10 is taken out and be replaced, without fluid pipe road
201 are modified, and the effect of the different pressure drop current limlitings of same fluid circuit 201 can be realized, improve 201 He of fluid circuit
The versatility and applicability of multistage current-limiting apparatus 10 avoid the setting restriction orifice at the connecting flange 203 of fluid circuit 201
The problem of the installation and removal trouble of caused restriction orifice, and it is hidden not will increase the safety such as the corrosion of fluid circuit 201 and leakage
Suffer from.Simultaneously as not needing to be fixed on multistage current limiting plate is separately installed inside fluid circuit 201, fluid circuit 201 is simplified
Processing, reduce the process complexity of multistage current-limiting apparatus 10.
Specifically, which includes multiple limiting blocks and the connecting conduit being arranged between adjacent limiting block
2.Limiting block is arranged at intervals at least two along fluid flow direction, and limiting block is offered along fluid flow direction for being depressured
The metering hole of current limliting.It is sequentially reduced in the aperture of fluid flow direction, the metering hole of multiple limiting blocks, to realize that step pressure reducing limits
Stream；Close to the outer end diameter of the limiting block of fluid inlet and the sealed connection of fluid circuit 201, to flow through multistage current-limiting apparatus
10 fluid flows in multistage current-limiting apparatus 10, improves the metering function of multistage current-limiting apparatus 10, and reduction fluid flows through more
The noise of grade current-limiting apparatus 10 generates.It is above-mentioned multistage current-limiting apparatus 10 be arranged inside fluid circuit 201, and at least one end with
Fluid circuit 201 is detachably connected.
Specifically, multistage current-limiting apparatus 10 provided in this embodiment includes for three-level current-limiting apparatus, i.e., multistage current-limiting apparatus
10 include three limiting blocks, and three limiting blocks are followed successively by the first limiting block 11, the second limiting block 12 and the along fluid flow direction
Three limiting blocks 13.The first connecting conduit 21,12 He of the second limiting block are connected between first limiting block 11 and the second limiting block 12
The second connecting conduit 22 is connected between third limiting block 13.
In the present embodiment, the connection between the first connecting conduit 21 and the first limiting block 11 and the second limiting block 12 and
Connection between second connecting conduit 22 and the second limiting block 12 and third limiting block 13 is all made of screw thread etc. and removably connects
Mode is dismantled by each section to multistage current-limiting apparatus 10, can be convenient the processing to multistage current-limiting apparatus 10, assembling
And maintenance, meanwhile, the different multistage current-limiting apparatus 10 of current limitation effect can be obtained by only replacing limiting block 1 therein, improved
The versatility of multistage 10 each section part of current-limiting apparatus.In other embodiments, the connection between connecting conduit 2 and limiting block
It can be using connection types such as welding.
In the present embodiment, it is protruded into inside fluid circuit 201 or from fluid circuit 201 for convenience of multistage current-limiting apparatus 10
Take out, the second limiting block 12, third limiting block 13, the first connecting conduit 21 and the second connecting conduit 22 outer diameter be respectively less than fluid
The internal diameter of pipeline 201, to reduce multistage current-limiting apparatus 10 during protruding into or taking out fluid circuit 201, with fluid circuit
Contact area between 201 reduces installation resistance.
Since the caliber of connecting conduit 2 only has a certain effect the installation of multistage current-limiting apparatus 10, this implementation is meeting
Under conditions of the outer diameter of above-mentioned connecting conduit 2, limitation is not made to the caliber of connecting conduit 2, i.e., in the present embodiment, first connects
The caliber for connecing conduit 21 and the second connecting conduit 22 may be the same or different, so as to according to the existing of site operation
Material, the internal diameter of fluid circuit 201 for installing multistage current-limiting apparatus 10 and length and the requirement of required decompression current limliting,
The length and caliber of first connecting conduit 21 and the second connecting conduit 22 are reasonably selected, it can using existing suitable
Pipeline is and nonessential to the first connecting conduit 21 and the second connecting conduit as the first connecting conduit 21 or the second connecting conduit 22
22 carry out new design or processing.The versatility of material selection, and multistage current-limiting apparatus can be improved in this kind of set-up mode
10 and current limliting pipeline 20 applicability, simplify the processing of multistage current-limiting apparatus 10 and current limliting pipeline 20, reduce multistage current-limiting apparatus
10 and current limliting pipeline 20 processing cost, and facilitate the installation, maintenance and replacement of multistage current-limiting apparatus 10 and current limliting pipeline 20.
In the present embodiment, the metering hole aperture of the first limiting block 11, the second limiting block 12 and third limiting block 13 is set
It sets needs specifically to be designed according to required decompression current limliting rate, and third limiting block 13, i.e., far from the current limliting of fluid inlet
The metering hole aperture of block, which is equal to, designs aperture, and the metering hole aperture of the second limiting block 12 and the first limiting block 11 increases step by step.Example
Such as, according to the requirement of decompression current limliting, the required aperture in the metering hole aperture of theoretical calculation is 15mm, then the limit of third limiting block 13
Orifice aperture is 15mm, and the metering hole aperture of the second limiting block 12 and third limiting block 13 may respectively be 18mm and 20mm.
When spraying from multistage current-limiting apparatus 10 far from one end of fluid inlet in order to avoid high-pressure fluid, biggish make an uproar is generated
The case where sound or high-pressure fluid direct 201 elbow 202 of wash fluid pipeline, multistage limit of the current-limiting apparatus 10 far from fluid inlet
Stream block is connected with diversion pipe 3, carries out water conservancy diversion for flowing out multistage current-limiting apparatus 10 to high-pressure fluid, reduces noise and prevent
Direct 201 elbow 202 of wash fluid pipeline of high-pressure fluid.
Specifically, in the present embodiment, one end of third limiting block 13 is connected with diversion pipe 3,3 peripheral wall interval of diversion pipe
Multiple deflector holes 31 are offered, deflector hole 31 is connected to the inner cavity of diversion pipe 3 and the inner cavity of fluid circuit 201, and diversion pipe 3 is remote
It is closed at one end from third limiting block 13.By the fluid of the decompression current limliting of third limiting block 13 after diversion pipe 3, from multiple water conservancy diversion
Hole 31 is flowed out, and so that high-pressure fluid is spread outflow from diversion pipe 3, is avoided fluid from the lesser pipeline of caliber to caliber
Biggish pipeline concentrate suddenly outflow caused by flow noise or washing away to elbow of pipeline 202, reach reduce flow noise and
Reduce the purpose washed away.
In embodiment, the area of deflector hole 31 is less than the area of the metering hole of third limiting block 13, and deflector hole 31 is
Round deflector hole 31 or oval deflector hole 31 are conducive to reduce resistance when high-pressure fluid flows through deflector hole 31, further subtract
Small noise.
In the present embodiment, deflector hole 31 is provided with multiple rows of along the circumferential uniform intervals of diversion pipe 3, every 31 edge of row's deflector hole
The length direction uniform intervals of diversion pipe 3 are provided with multiple deflector holes 31, and adjacent two rows of deflector holes 31 shift to install.In this reality
It applies in example, deflector hole 31 is provided with four rows along the circumferential direction of diversion pipe 3, and adjacent two rows of deflector holes 31 are shifted to install in 90 °.Having
In body application, can be had according to the metering hole aperture of the outer diameter of diversion pipe 3, the length of diversion pipe 3 and adjacent level-one limiting block 1
Body determines the number of deflector hole 31 and the aperture of deflector hole 31.
In the present embodiment, by connecting diversion pipe 3 in afterbody limiting block 1, water conservancy diversion is opened up on 3 peripheral wall of diversion pipe
Hole 31 can be such that the high-pressure fluid in multistage current-limiting apparatus 10 flows out out of deflector hole 31, high-pressure fluid can be made from diversion pipe 3
Surrounding spray, reduce noise when high-pressure fluid flows out multistage current-limiting apparatus 10, and be avoided that high-pressure fluid directly sprays
It is damaged caused by fluid pipe road 201 and elbow 202.
For fixation of the multistage current-limiting apparatus 10 in fluid circuit 201, multistage limit provided in this embodiment is better achieved
Stream device 10 further includes locating piece 4, and locating piece 4 is connected to the one end of diversion pipe 3 far from limiting block, and to diversion pipe 3 far from limit
It is closed one end of stream block.The outer wall of locating piece 4 offers diversion trench 41 along fluid flow direction, and diversion trench 41 is along positioning
The circumferential uniform intervals of block 4 offer multiple.The fluid flowed out from diversion pipe 3, flows out to downstream fluid through diversion trench 41
In 201.
The setting of locating piece 4 is attached positioning to position of the current limiting tube in fluid circuit 201, and prevents multistage current limliting
Device 10 is deviated far from one end of fluid inlet.The maximum outside diameter of locating piece 4 and the internal diameter of fluid circuit 201 cooperate, so as to
So that locating piece 4 is fastened in fluid circuit 201, guarantee that the one end of multistage current-limiting apparatus 10 far from fluid inlet does not occur partially
It moves, that is, guarantees that entire multistage current-limiting apparatus 10 is coaxially disposed with fluid circuit 201.
In the present embodiment, diversion pipe 3 is provided between locating piece 4 and third limiting block 13, after fluid flows through diversion pipe 3
From the gap that deflector hole 31 flows out to diversion pipe 3 and fluid circuit 201, therefore, locating piece 4 is solid slug, to confined bed
The outlet end of flow tube 3 offers the diversion trench 41 for fluid circulation on the outer wall of locating piece 4.In other embodiments, work as positioning
When being not provided with diversion pipe 3 between block 4 and limiting block, locating piece 4 is directly connected to limiting block, and the fluid flowed out from limiting block needs
Located piece 4 inside outflow, at this point, locating piece 4 offers the fluid channel for fluid circulation in inside.
Fig. 4 is the cross-sectional view of current limliting pipeline 20 provided in this embodiment, and Fig. 5 is the partial enlarged view in Fig. 4 at I, in conjunction with
Shown in Fig. 3-5, following mounting means are can be used in current limliting pipeline 20:
When fluid circuit 201 is straight pipe close to one end of fluid inlet, the other end has elbow 202, and multistage current limliting
When the entire length of device 10 and the flow development length of fluid circuit 201 are closer to, by the way that multistage current-limiting apparatus 10 is protruded into
Fluid circuit 201, and locating piece 4 is fastened at the elbow 202 of fluid circuit 201, multistage current-limiting apparatus 10 can be realized and exist
Fixation in fluid circuit 201: since fluid circuit 201 is reduced from fluid inlet to fluid outlet pressure, multistage current-limiting apparatus
10 will not flow under the action of Fluid pressure along towards one end of fluid inlet, and towards the movement of fluid outlet one end by curved
First 202 limit, i.e., multistage current-limiting apparatus 10 during the work time, will not move.
When fluid circuit 201 is straight pipe or elbow 202 apart from flowing into entrance farther out close to the both ends of fluid inlet
When, fluid circuit 201 is connected with flange 203 close to one end of fluid inlet, retaining ring 204 is provided on 203 inner wall of flange,
The circular orientation step 111 cooperated with retaining ring 204 is provided in one limiting block 11, the outer diameter of circular orientation step 111 is greater than gear
The internal diameter of circle 204, and the step surface of circular orientation step 111 abuts positioning, so that multistage current-limiting apparatus 10 be made to be fixed on flange
At 203, prevent multistage current-limiting apparatus 10 from shaking or falling off under the action of high-pressure fluid.
In the present embodiment, when conditions permit, can also use elbow 202 and locating piece 4 fixed simultaneously with
And retaining ring 204 and circular orientation step 111 are fixed, and it is steady that connection of the multistage current-limiting apparatus 10 in fluid circuit 201 can be improved
It is qualitative.In other embodiments, multistage current-limiting apparatus 10 and fluid circuit 201 can also be realized using other connection types
It is fixed, external screw thread such as is opened up in the outer wall of the first limiting block 11, opens up the internal screw thread with external screw thread cooperation in 203 inner wall of flange,
After flange 203 is welded on fluid circuit 201, multistage current-limiting apparatus 10 is protruded into fluid circuit 201 from tail portion, it is multistage
Current-limiting apparatus 10 is connect close to one end of fluid inlet by the internal screw thread of external screw thread and flange 203 in succession, realizes multistage current limliting dress
Set the fixation of 10 fluid relative pipelines 201.
It, can be whole by multistage current-limiting apparatus 10 when being installed in fluid circuit 201 to multistage current-limiting apparatus 10
It assembles and extendes back in fluid circuit 201, it can also be using segmentation installation, it may be assumed that firstly, locating piece 4 is connect with diversion pipe 3
Afterwards, diversion pipe 3 is protruded into fluid circuit 201；Secondly, third limiting block 13 is connect with the second diversion pipe 3, and make third point
Stream block is connect with diversion pipe 3, and the second diversion pipe 3 is protruded into fluid circuit 201；Thereafter, by the second limiting block 12 and first
Diversion pipe 3 connects, and connect the first limiting block 11 with the second connecting conduit 22, and the first connecting conduit 21 is protruded into fluid circuit
In 201；Finally, the first limiting block 11 is connect with the first connecting conduit 21, when fluid circuit 201 is there are when elbow 202, push away
The first limiting block 11 is pressed to abut locating piece to elbow 202, when needing to connect using flange 203, by flange 203 and the
The connection of one limiting block 11.In the present embodiment, it is preferred to use segmented mounting means makes multistage current-limiting apparatus 10 in installation process
In be less likely to occur to deviate.
In the present embodiment, flange 203 can weld before multistage current-limiting apparatus 10 is installed with fluid circuit 201, at this point,
If being provided with retaining ring 204 in flange 203, multistage current-limiting apparatus 10 is in the size of all parts of 111 rear end of circular orientation step
It should be less than the internal diameter of retaining ring 204；After flange 203 can also first be connect with the first limiting block 11, then with fluid circuit 201 carry out
Welding, at this point, the setting of retaining ring 204 does not impact the first connecting conduit 21 and subsequent part size, requires nothing more than first
Size of the limiting block 11 in the part of 111 rear end of circular orientation step is less than the internal diameter of retaining ring 204.
In the present embodiment, retaining ring 204 is arranged on flange 203, and in other embodiments, retaining ring 204 also can be set
In fluid circuit 201 close to one end of fluid inlet, at this point, to can extend into multistage current-limiting apparatus 10 in fluid circuit 201
Portion, multistage current-limiting apparatus 10 should be less than the internal diameter of retaining ring 204 in the size of all parts of 111 rear end of circular orientation step.
In the present embodiment, it is taken out in the slave fluid circuit 201 for convenience of multistage current-limiting apparatus 10, multistage current-limiting apparatus 10
One end close to fluid inlet offers internal screw thread, so as to screw multistage current-limiting apparatus 10 by tools such as handles, makes more
Grade current-limiting apparatus 10 takes out from fluid circuit 201.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (9)
1. a kind of multistage current-limiting apparatus (10), which is characterized in that the multistage current-limiting apparatus (10) is tubular structure, the multistage
Current-limiting apparatus (10) setting is internal in fluid circuit (201), and the current-limiting apparatus (10) and the fluid circuit (201) are removable
Unload connection.
2. multistage current-limiting apparatus (10) according to claim 1, which is characterized in that the multistage current-limiting apparatus (10) is wrapped
It includes:
At least two limiting blocks, along the length direction interval of the fluid circuit (201), the limiting block is along the fluid circuit
(201) length direction opens up restricted orifice, and the limit of upstream is less than positioned at the metering hole aperture of the limiting block in downstream
The metering hole aperture of block is flowed, and the multistage current-limiting apparatus (10) is close close to fluid circuit (201) described in one end of fluid inlet
Envelope connection；
Connecting conduit (2) is connected between the two neighboring limiting block.
3. multistage current-limiting apparatus (10) according to claim 2, which is characterized in that further include:
Locating piece (4) is arranged in the described multistage one end of current-limiting apparatus (10) far from the fluid inlet, the locating piece (4)
On offer fluid channel.
4. multistage current-limiting apparatus (10) according to claim 3, which is characterized in that further include:
Diversion pipe (3), one end are connect with the limiting block near fluid outlet, and the other end and the locating piece (4) are even
It connects, the outer diameter of the diversion pipe (3) is less than the internal diameter of the fluid circuit (201), is spaced apart on the peripheral wall of the diversion pipe (3)
Equipped with multiple deflector holes (31), the area of the deflector hole (31) is less than the area of the metering hole, the diversion pipe (3) and institute
State the closed at one end of locating piece (4) connection；
The fluid channel is the diversion trench (41) being provided on the locating piece (4) outer wall.
5. multistage current-limiting apparatus (10) according to claim 4, which is characterized in that the axial setting of the diversion pipe (3)
There is multiple rows of deflector hole group, deflector hole group described in every row includes the more of the length direction uniform intervals setting along the diversion pipe (3)
A deflector hole (31).
6. multistage current-limiting apparatus (10) according to claim 2, which is characterized in that the connecting conduit (2) and the limit
Stream block is detachably connected.
7. multistage current-limiting apparatus (10) according to claim 2, which is characterized in that the multistage current-limiting apparatus (10) is close
One end of the fluid inlet offers internal screw thread.
8. a kind of current limliting pipeline (20), which is characterized in that including the fluid circuit (201) and such as any one of claim 1-7
The multistage current-limiting apparatus (10), the multistage current-limiting apparatus (10) are co-axially located in the fluid circuit (201).
9. current limliting pipeline (20) according to claim 8, which is characterized in that the separate stream of the current limliting pipeline (20)
One end of body entrance is provided with elbow (202)；
The multistage current-limiting apparatus (10) is interference fitted close to one end of the fluid inlet and the fluid circuit (201), institute
The other end for stating multistage current-limiting apparatus (10) is fastened in the elbow (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821401064.2U CN208778978U (en) | 2018-08-29 | 2018-08-29 | A kind of multistage current-limiting apparatus and current limliting pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821401064.2U CN208778978U (en) | 2018-08-29 | 2018-08-29 | A kind of multistage current-limiting apparatus and current limliting pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208778978U true CN208778978U (en) | 2019-04-23 |
Family
ID=66158959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821401064.2U Expired - Fee Related CN208778978U (en) | 2018-08-29 | 2018-08-29 | A kind of multistage current-limiting apparatus and current limliting pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208778978U (en) |
-
2018
- 2018-08-29 CN CN201821401064.2U patent/CN208778978U/en not_active Expired - Fee Related
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