CN208719667U - A kind of porous restriction orifice - Google Patents
A kind of porous restriction orifice Download PDFInfo
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- CN208719667U CN208719667U CN201821275977.4U CN201821275977U CN208719667U CN 208719667 U CN208719667 U CN 208719667U CN 201821275977 U CN201821275977 U CN 201821275977U CN 208719667 U CN208719667 U CN 208719667U
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- ring body
- outer ring
- restriction orifice
- plate core
- porous
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Abstract
The utility model discloses a kind of porous restriction orifices, belong to restriction orifice technical field；The main points of its technical scheme are that including plate core, outer ring body and several connection ring bodies between plate core and outer ring body；Plate core, outer ring body and connection ring body coaxial arrangement；The through-hole passed through for liquid is provided in plate core, outer ring body and connection ring body；It uses and is detachably connected between the plate core, ring body and connection ring body；It is smaller to the current limliting decompression adjustable range of fluid to solve existing porous restriction orifice, the small problem of the scope of application；The gradient of different current limliting decompressions can be formed by combining, use scope is extensive.
Description
Technical field
The utility model relates to restriction orifice technical field more particularly to a kind of porous current limiting plates.
Background technique
Currently, pressure difference is larger before and after the decompression for liquid, gas or steam in closed conduct, especially pipeline
When, it usually needs use restriction orifice device.Restriction orifice is since with structure, simple, easy processing, manufacturing cost be low, installation side
Just the advantages that, is replaced regulating valve to carry out limited flow rate or is reduced pressure under the premise of meeting technique requirement using restriction orifice, will
Investment and operation maintenance cost can be greatly reduced, therefore has been widely used in process unit in foreign countries, to the peace of device
Row for the national games plays an important role.
Restriction orifice can be used as flow measuring element for measuring flow, can also be used as restricting element and is used to limit stream
Amount and reduction pressure.There are certain pressure difference before and after orifice plate, fluid flow through orifices plate flows through the stream of orifice plate for certain aperture
Amount increases as pressure difference increases.But when pressure difference is more than a certain numerical value (referred to as critical pressure differential), fluid passes through at orifice plate shrinkage cavity
Flow velocity reach velocity of sound, at this moment, no matter how pressure difference increases, as long as the pressure of orifice plate upstream keeps certain, flows through the stream of orifice plate
Amount will be maintained at certain numerical value without being further added by.Restriction orifice is exactly to limit the flow of fluid according to this principle and reduce to press
Power.Restriction orifice is divided into single orifice plate and porous plate by the number of openings on orifice plate；Single-stage and multistage can be divided by orifice plate quantity.
Authorization Notice No. is that the Chinese utility model patent file of CN203477388U discloses a kind of adjustable-flow limit
Discharge orifice plate, the rotatable multi-hole orifice to fit together including two pieces, every piece of multi-hole orifice are equipped with several throttle orifices, wherein
One piece of multi-hole orifice rotates an angle, shelters from a part of throttle hole area of another piece of multi-hole orifice.
Above-mentioned adjustable-flow restriction orifice is turned by two pieces of the opposite of the rotatable multi-hole orifice to fit together
It is dynamic, so that the intersection for changing throttle orifice on two multi-hole orifices passes through area, and then have the function that change current limliting flow.But two
The quantity and constant magnitude of the throttle orifice of the porous restriction orifice of block, it is smaller to the current limliting decompression adjustable range of fluid, it is applicable in model
It encloses small.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of porous restriction orifice, it can
The gradient of different current limliting decompressions is formed by combining, use scope is extensive.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of porous metering hole
Plate, including plate core, outer ring body and several connection ring bodies between plate core and outer ring body；Plate core, outer ring body and connection
Ring body coaxial arrangement；The through-hole passed through for liquid is provided in plate core, outer ring body and connection ring body；The plate core, ring body and company
It connects to use between ring body and be detachably connected.
Through the above technical solutions, can be required according to specific current limliting and decompression, selection when selecting porous flow orifice plate
The plate core, connection ring body and outer ring body for offering different number or big small through hole, are then attached fixation, and then reach
Specific current limliting decompression requires；By using the method that the plate core of different size, connection ring body and outer ring body are combined, make more
The current limliting adjustable range of hole restriction orifice is bigger, so as to be suitable for preferably applying operating condition.
Preferably, being provided with external screw thread on the circumferential surface of the plate core；The inner ring surface setting of the outer ring body and connection ring body
There is internal screw thread, the inner ring surface of the connection ring body is provided with internal screw thread；Pass through spiral shell between the plate core, connection ring body and outer ring body
Line is connected and fixed.
Through the above technical solutions, being provided with external screw thread on the circumferential surface of plate core；Outer ring body and the inner ring surface of connection ring body are set
It is equipped with internal screw thread, the inner ring surface for connecting ring body is provided with internal screw thread；Be connected through a screw thread by plate core, connection ring body and outer ring body into
Row is fixed to each other, to conveniently be combined installation to restriction orifice.
Preferably, porous current limiting plate further includes the stopple being sealed to through-hole.
Through the above technical solutions, porous current limiting plate further includes the stopple being sealed to through-hole；Use porous metering hole
When plate is to fluid progress current limliting decompression, when the porous current limliting of plate core, connection ring body and outer ring body combination using different size
It, can be further logical to the one or more on porous restriction orifice by sealing stopple when orifice plate and requirement have differences
Hole is sealed, to further adjust the current limliting pressure relief value of porous restriction orifice, it is made more to meet the requirement of operating condition.
Preferably, the through hole is provided with seal groove；The stopple includes inserting column and sealing column；The stopple exists
When being sealed to through-hole, the inserting column is plugged into through-hole, and the sealing column is placed in seal groove；The sealing column with
Seal groove is connected and fixed using screw.
Through the above technical solutions, be inserted into through-hole when being sealed using stopple to through-hole using inserting column, it is close
Envelope column is placed in seal groove, and sealing column and inserting column are fixed by screw, to prevent water flow to through-hole
Pass through, plays the sealing function to through-hole.
Preferably, being fixed with sealing ring in the sealing column and the contact face of seal groove.
Through the above technical solutions, sealing ring is fixedly installed by the contact face in sealing column and seal groove, further
Reinforce stopple to the sealing effect of through-hole, reduces and leaked using the fluid of the through-hole at sealing-plug.
Preferably, being provided with anti-skid design on the outer ring surface of the outer ring body.
Through the above technical solutions, by the way that anti-skid design is arranged on the outer ring surface of outer ring body, it is convenient to porous metering hole
Plate grab and disassemble and install to outer ring body with ring body is connect.
Preferably, being fixed with operating stick on the circumferential surface of the outer ring body.
Through the above technical solutions, by the way that operating stick is arranged on the circumferential surface of outer ring body, and then conveniently to porous metering hole
Plate is held when being mounted on fluid circuit, the convenient installation to porous restriction orifice.
It is threadedly coupled preferably, the operating stick is used with outer ring body.
It is threadedly coupled through the above technical solutions, operating stick is used with outer ring body；To be installed by porous restriction orifice
After being completed on fluid circuit, operating stick is disassembled from outer ring body, to avoid pipeline and the equipment peace to surrounding
Dress causes to interfere.
In conclusion the utility model has the following beneficial effects:
1. can be required according to specific current limliting and decompression, selection offers different number when selecting porous flow orifice plate
Or plate core, connection ring body and the outer ring body of big small through hole, it is then attached fixation, and then reach specific current limliting decompression
It is required that；By using the method that the plate core of different size, connection ring body and outer ring body are combined, make the limit of porous restriction orifice
It is bigger to flow adjustable range, so as to be suitable for preferably applying operating condition；
2. porous current limiting plate further includes the stopple being sealed to through-hole；Fluid is limited using porous restriction orifice
When stream decompression, when the porous restriction orifice and requirement of plate core, connection ring body and outer ring body combination using different size
When having differences, further one or more through-holes on porous restriction orifice can be sealed by sealing stopple, from
And the current limliting pressure relief value of porous restriction orifice is further adjusted, so that it is more met the requirement of operating condition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of porous restriction orifice；
Fig. 2 is the structural schematic diagram of through-hole and stopple；
Fig. 3 is fiting relation figure when stopple seals through-hole.
Appended drawing reference: 1, plate core；2, outer ring body；21, anti-skid design；22, operating stick；3, ring body is connected；4, through-hole；41,
Seal groove；5, stopple；51, sealing column；52, inserting column；6, sealing ring.
Specific embodiment
Embodiment: a kind of porous restriction orifice, referring to Fig.1, including plate core 1, outer ring body 2 and several be located at plate core 1
Connection ring body 3 between outer ring body 2；Plate core 1, outer ring body 2 and connection ring body 3 are coaxially disposed；Plate core 1, outer ring body 2 and connection
The through-hole 4 passed through for liquid is provided in ring body 3.External screw thread is provided on the circumferential surface of plate core 1；Outer ring body 2 and connection ring body 3
Inner ring surface is provided with internal screw thread, and the inner ring surface of connection ring body 3 is provided with internal screw thread；Between plate core 1, connection ring body 3 and outer ring body 2
It is connected through a screw thread fixation.When carrying out current limliting decompression to the fluid in pipeline using porous restriction orifice, according to operating condition to limit
The requirement for flowing decompression selects plate core 1, outer ring body 2 and the connection ring body 3 of different size.Pass through different number and the through-hole of size 4
Plate core 1, outer ring body 2 and connect ring body 3 combination, so as to obtain the porous restriction orifice of different current limliting reduced pressure capabilities.
The method for forming porous restriction orifice is combined by using different plate cores 1, outer ring body 2 and connection ring body 3, makes porous metering hole
The current limliting pressure relief ranges of plate are more extensive, can adapt in more using operating condition.
It is provided with anti-skid design 21 on the outer ring surface of outer ring body 2, operating stick 22 is further fixed on the circumferential surface of outer ring body 2, grasps
Make bar 22 to be threadedly coupled with the use of outer ring body 2.It is convenient to porous by the way that anti-skid design 21 is arranged on the outer ring surface of outer ring body 2
Restriction orifice grab and disassemble and install to outer ring body 2 with ring body 3 is connect.By on the circumferential surface of outer ring body 2
Operating stick 22 is set, and then conveniently porous restriction orifice is held when being mounted on fluid circuit, it is convenient to porous current limliting
The installation of orifice plate.Operating stick 22 is used with outer ring body 2 and is threadedly coupled；To be mounted on fluid circuit by porous restriction orifice
After completion, operating stick 22 is disassembled from outer ring body 2, to avoid causing to do to pipeline and the equipment installation of surrounding
It relates to.
Referring to Fig. 2 and Fig. 3, porous restriction orifice further includes that closed stopple 5 is carried out to through-hole 4.It is provided at through-hole 4 close
Sealing groove 41, stopple 5 include inserting column 52 and sealing column 51, and sealing column 51 is connected and fixed with seal groove 41 using screw.Make
When carrying out current limliting decompression to the fluid in pipeline with porous restriction orifice, pass through the plate core 1 of different size, connection ring body 3 and outer
The current limliting reduced pressure capabilities of the porous restriction orifice that ring body 2 is combined and working condition requirement are there is also when difference, by using hole
One or more through-holes 4 of 5 pairs of porous restriction orifices of plug are closed, to change the current limliting decompression energy of porous restriction orifice
Power increases the current limliting decompression gradient of porous restriction orifice.
When being sealed using stopple 5 to through-hole 4, inserting column 52 is plugged into through-hole 4, sealing column 51 is placed in close
In sealing groove 41, and then sealing column 51 and seal groove 41 are connected and fixed using screw.The contact jaw of sealing column 51 and seal groove 41
Fixed seal ring 6 is gone back on face, and stopple 5 is further strengthened to the sealing effect of through-hole 4 by sealing ring 6, reduces fluid from through-hole 4
The leakage at place.
Specifically used principle is as follows:
When carrying out current limliting decompression to the fluid in pipeline using porous restriction orifice, the current limliting decompression of more operating condition is wanted
It asks, selects corresponding plate core 1, connection ring body 3 and outer ring body 2 to carry out assembling and form porous restriction orifice, to the porous limit of combination
Discharge orifice plate is tried out, and when the current limliting reduced pressure capabilities of porous restriction orifice and working condition requirement are there are when nuance, can be passed through
Method with changing the plate core 1 of adjacent-specification, connection ring body 3 or outer ring body 2 changes the current limliting reduced pressure capabilities of porous restriction orifice, or
Person the current limiting capacity of porous restriction orifice is adjusted the method that through-hole 4 is sealed by stopple 5.By porous current limliting
When orifice plate is installed in pipeline, operating stick 22 is installed on outer ring body 2, after completing to the installation of porous restriction orifice, will be grasped
Make bar 22 to remove from outer ring body 2.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of porous restriction orifice, it is characterised in that: including plate core (1), outer ring body (2) and several be located at plate core (1)
Connection ring body (3) between outer ring body (2)；Plate core (1), outer ring body (2) and connection ring body (3) coaxial arrangement；Plate core (1),
The through-hole (4) passed through for liquid is provided in outer ring body (2) and connection ring body (3)；The plate core (1), outer ring body (2) and connection
It uses and is detachably connected between ring body (3).
2. a kind of porous restriction orifice according to claim 1, it is characterised in that: be arranged on the circumferential surface of the plate core (1)
There is external screw thread；The outer ring body (2) and the inner ring surface for connecting ring body (3) are provided with internal screw thread, the inner ring of connection ring body (3)
Face is provided with internal screw thread；Fixation is connected through a screw thread between the plate core (1), connection ring body (3) and outer ring body (2).
3. a kind of porous restriction orifice according to claim 1, it is characterised in that: porous current limiting plate further includes to through-hole
(4) stopple (5) being sealed.
4. a kind of porous restriction orifice according to claim 3, it is characterised in that: be provided with sealing at the through-hole (4)
Slot (41)；The stopple (5) includes inserting column (52) and sealing column (51)；The stopple (5) is sealed to through-hole (4)
When, the inserting column (52) is plugged into through-hole (4), and the sealing column (51) is placed in seal groove (41)；The sealing column
(51) it is connected and fixed with seal groove (41) using screw.
5. a kind of porous restriction orifice according to claim 4, it is characterised in that: the sealing column (51) and seal groove
(41) sealing ring (6) are fixed in contact face.
6. a kind of porous restriction orifice according to claim 5, it is characterised in that: on the outer ring surface of the outer ring body (2)
It is provided with anti-skid design (21).
7. a kind of porous restriction orifice according to claim 1, it is characterised in that: solid on the circumferential surface of the outer ring body (2)
Surely there are operating stick (22).
8. a kind of porous restriction orifice according to claim 7, it is characterised in that: the operating stick (22) and outer ring body
(2) using threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821275977.4U CN208719667U (en) | 2018-08-08 | 2018-08-08 | A kind of porous restriction orifice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821275977.4U CN208719667U (en) | 2018-08-08 | 2018-08-08 | A kind of porous restriction orifice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208719667U true CN208719667U (en) | 2019-04-09 |
Family
ID=65976799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821275977.4U Active CN208719667U (en) | 2018-08-08 | 2018-08-08 | A kind of porous restriction orifice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208719667U (en) |
-
2018
- 2018-08-08 CN CN201821275977.4U patent/CN208719667U/en active Active
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