CN208719666U - A kind of multistage restriction orifice - Google Patents
A kind of multistage restriction orifice Download PDFInfo
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- CN208719666U CN208719666U CN201821275343.9U CN201821275343U CN208719666U CN 208719666 U CN208719666 U CN 208719666U CN 201821275343 U CN201821275343 U CN 201821275343U CN 208719666 U CN208719666 U CN 208719666U
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- current limiting
- limiting plate
- sleeve
- movable
- restriction orifice
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Abstract
The utility model discloses a kind of multistage restriction orifices, including sleeve and positioned at the several groups current limiting component of sleeve inner, the current limiting component includes the set current limiting plate being fixedly and coaxially connected with sleeve and the movable current limiting plate around sleeve axis direction and sleeve rotation connection；The set current limiting plate is provided with the set current limiting hole for axially penetrating through set current limiting plate, and the activity current limiting plate is provided with the movable metering hole for axially penetrating through movable current limiting plate；The end face of the set current limiting plate and movable current limiting plate fits, rotation activity current limiting plate, and set current limiting hole and movable metering hole are overlapping, or movable current limiting plate blocks set current limiting hole；It is more to solve the problems, such as that the fluid flow that it passes through can not be adjusted in existing multistage restriction orifice；The fluid for flowing through multistage restriction orifice can be adjusted, use scope is more extensive.
Description
Technical field
The utility model relates to restriction orifice technical field more particularly to a kind of multistage restriction orifices.
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 CN203604902U discloses a kind of porous current limliting of multistage
Orifice fitting, described device include outer tube, and support ring is from left to right nested in the outer tube, connects flow table and fixed spiral shell
The external annulus of bolt, the support ring is welded on the inner wall of outer tube, and the flow table that connects is provided with multiple, and the flow table that connects is served as reasons
Connect the tubular structure that sleeve and porous plate are constituted, and the first order connects the porous plate of flow table and is in contact with support ring, the fixation
Bolt is spun on the inner wall of outer tube, and the through-hole passed through for liquid is provided on the fixing bolt, and the fixing bolt will be consolidated
Determine bolt, connect flow table and support ring presses together.
The above-mentioned porous restriction orifice device of multistage connects flow table by the multistage being arranged in outer tube and carries out multistage to fluid
Current limliting decompression, but connecing flow table is the tubular structure being made of connection sleeve and porous plate, and the first order connects the porous of flow table
Plate is in contact with support ring, and fixing bolt is spun on the inner wall of outer tube, and the through-hole passed through for liquid is provided on fixing bolt,
Fixing bolt by fixing bolt, connect flow table and support ring presses together, the fluid flow passed through is unadjustable.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of multistage restriction orifice, it can
The fluid for flowing through multistage restriction orifice is adjusted, use scope is more extensive.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of multistage metering hole
Plate, including sleeve and positioned at the several groups current limiting component of sleeve inner, the current limiting component includes being fixedly and coaxially connected with sleeve
Set current limiting plate and around sleeve axis direction and sleeve rotation connection movable current limiting plate；The set current limiting plate is provided with
The set current limiting hole of set current limiting plate is axially penetrated through, the activity current limiting plate is provided with the activity limit for axially penetrating through movable current limiting plate
Discharge orifice；The end face of the set current limiting plate and movable current limiting plate fits, and rotation activity current limiting plate, set current limiting hole and activity limit
Discharge orifice is overlapping, or movable current limiting plate blocks set current limiting hole.
Through the above technical solutions, multistage restriction orifice, including sleeve and positioned at the several groups current limiting component of sleeve inner,
By the setting of more current limiting components, multistage restriction orifice is set to carry out multistage current limliting to the fluid in pipeline, to play more
Good current limliting effect of easing stress；Current limiting component includes the set current limiting plate being fixedly and coaxially connected with sleeve and around sleeve axis direction
With the movable current limiting plate of sleeve rotation connection；By rotation activity restriction orifice, thus change activity metering hole and set current limiting
The overlapping area in hole, so that being adjusted by flow to multistage route orifice plate, makes it play preferably decompression current limitation effect.
Preferably, being fixed with shifting block on the circumferential surface of the activity current limiting plate；It is offered on the circumferential surface of the sleeve and stirs slot,
The shifting block is by stirring the prominent sleeve circumferential surface of slot.
Through the above technical solutions, being fixed with shifting block on the circumferential surface of movable current limiting plate；It offers and stirs on the circumferential surface of sleeve
Slot, shifting block is by stirring the prominent sleeve circumferential surface of slot, to can conveniently be carried out to movable current limiting plate by rotation shifting block
Rotation, and then being adjusted by flow to multistage restriction orifice.
Preferably, multistage restriction orifice further includes the fixed mechanism that movable current limiting plate and sleeve is fixed；The sleeve
Fixing screwed hole is provided on peripheral wall, the fixed mechanism includes fixing bolt；The fixing bolt and fixing screwed hole screw thread
Engagement, the screw rod end of the fixing bolt are abutted with the circumferential surface of movable current limiting plate.
Through the above technical solutions, multistage restriction orifice further includes the fixed mechanism that movable current limiting plate and sleeve is fixed；
Fixing screwed hole is provided on the peripheral wall of sleeve, fixed mechanism includes fixing bolt；Fixing bolt is nibbled with fixing screwed hole screw thread
It closes, the screw rod end of fixing bolt is abutted with the circumferential surface of movable current limiting plate；It completes to limit multistage by rotation activity current limiting plate
After the flow of discharge orifice plate is adjusted, the circumferential surface of movable current limiting plate is pushed up by the fixing bolt being mounted in fixing screwed hole
Tightly, so that movable current limiting plate and sleeve are attached fixation, and then multistage restriction orifice is maintained at particular flow rate.
Preferably, sleeve includes several segments mounting cylinder；Movable current limiting plate and set current limiting plate are separately mounted to mounting cylinder two
End, set current limiting plate one end of mounting cylinder connects with movable current limiting plate one end of another mounting cylinder, uses between adjacent mounting cylinder
It is detachably connected.
Through the above technical solutions, sleeve includes several segments mounting cylinder；Movable current limiting plate and set current limiting plate are installed respectively
At mounting cylinder both ends, set current limiting plate one end of mounting cylinder connects with movable current limiting plate one end of another mounting cylinder, adjacent installation
It uses and is detachably connected between cylinder；It is convenient clear to set current limiting plate and movable current limiting plate progress to be dismantled by sleeve
It is clean.
Preferably, set current limiting plate one end of the mounting cylinder is provided with male threaded joint, the activity of the mounting cylinder
Current limiting plate one end is provided with female threaded joint, and the male threaded joint and female threaded joint screw thread of the adjacent mounting cylinder are nibbled
It closes.
Through the above technical solutions, set current limiting plate one end of mounting cylinder is provided with male threaded joint, the work of mounting cylinder
Dynamic current limiting plate one end is provided with female threaded joint, passes through the male threaded joint and female threaded joint screw thread of adjacent mounting cylinder
Engagement, mounting cylinder is carried out it is connected, it is easy to operate to further complete the assembling to multistage restriction orifice.
Preferably, outer connection screw thread is provided on the circumferential surface of the set current limiting plate, the set current limiting plate of the mounting cylinder
Installation end is provided with the interior connection screw thread engaged with connection screw thread screw thread outer in set current limiting plate surface.
Through the above technical solutions, installation is fixed by connection screw thread outer on circumferential surface and mounting cylinder in set current limiting plate,
So as to easily by set current limiting plate to disassemble on mounting cylinder, thus it is convenient set current limiting plate is repaired and
Replacement.
Preferably, the sleeve both ends are respectively fixed with connecting flange.
Through the above technical solutions, by the way that connecting flange is arranged at the both ends of sleeve, facilitate its in sleeve and pipeline
Its flange connects, and multistage restriction orifice is installed in fluid circuit to facilitate.
It is detachably connected preferably, the connecting flange is used with sleeve.
Through the above technical solutions, be detachably connected by using connecting flange with sleeve, it can be to connecting flange
Model is replaced, so that multistage restriction orifice be enable to be suitable for more fluid circuits.
In conclusion the utility model has the following beneficial effects:
1. multistage restriction orifice includes sleeve and the several groups current limiting component positioned at sleeve inner, pass through more current limiting components
Setting enables multistage restriction orifice to carry out multistage current limliting to the fluid in pipeline, to play better current limliting effect of easing stress；
Current limiting component includes the set current limiting plate being fixedly and coaxially connected with sleeve and is rotatablely connected around sleeve axis direction and sleeve
Movable current limiting plate；By shifting block rotation activity restriction orifice, thus the overlapping area of change activity metering hole and set current limiting hole,
To being adjusted by flow to multistage route orifice plate, it is made to play preferably decompression current limitation effect；
2. sleeve includes several segments mounting cylinder；Movable current limiting plate and set current limiting plate are separately mounted to mounting cylinder both ends, peace
Set current limiting plate one end of fitted tube connects with movable current limiting plate one end of another mounting cylinder, is connected between adjacent mounting cylinder using screw thread
It connects, and then conveniently movable current limiting plate and set current limiting plate is cleaned.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of multistage restriction orifice；
Fig. 2 is the three dimensional sectional view of multistage restriction orifice；
Fig. 3 is the structural schematic diagram of embodiment activity current limiting plate and mounting cylinder；
Fig. 4 is the structural schematic diagram of movable current limiting plate；
Fig. 5 is the structural schematic diagram of set current limiting plate and mounting cylinder；
Fig. 6 is the structural schematic diagram of fixed plate.
Appended drawing reference: 1, sleeve；11, slot is stirred；12, mounting cylinder；121, male threaded joint；122, internal screw thread connects
Portion；123, interior connection screw thread；13, fixing screwed hole；14, positive connecting cylinder；15, anti-connecting cylinder；2, current limiting component；21, fixed limit
Flowing plate；211, set current limiting hole；212, outer connection screw thread；22, movable current limiting plate；221, movable metering hole；222, shifting block；3, solid
Determine mechanism；31, fixing bolt；4, connecting flange.
Specific embodiment
Embodiment: a kind of multistage restriction orifice, referring to Figures 1 and 2, the several groups including sleeve 1 and inside sleeve 1
Current limiting component 2, current limiting component 2 include the set current limiting plate 21 being fixedly and coaxially connected with sleeve 1 and around 1 axis direction of sleeve with
The movable current limiting plate 22 that sleeve 1 is rotatablely connected.Set current limiting plate 21 is provided with the set current limiting for axially penetrating through set current limiting plate 21
Hole 211, movable current limiting plate 22 are provided with the movable metering hole 221 for axially penetrating through movable current limiting plate 22；Set current limiting plate 21 and work
The end face of dynamic current limiting plate 22 fits.
Multistage restriction orifice further includes the fixed mechanism 3 that movable current limiting plate 22 is fixed with sleeve 1.On the peripheral wall of sleeve 1
It is provided with fixing screwed hole 13, fixed mechanism 3 includes fixing bolt 31；Fixing bolt 31 is engaged with 13 screw thread of fixing screwed hole,
By rotating fixing bolt 31, abut the end of screw rod and the circumferential surface of movable current limiting plate 22, and then movable current limiting plate 22 and set
Cylinder 1 is fixed, so that multistage restriction orifice is maintained at accordingly by flow.
1 both ends of sleeve are respectively fixed with connecting flange 4, and connecting flange 4 is detachably connected with sleeve 1 using what is be threadedly coupled
It connects.By being connected with other flanges in fluid circuit by connecting flange 4 in the both ends of sleeve 1 setting connecting flange 4, side
Just multistage restriction orifice is installed in fluid circuit.Connecting flange 4 with sleeve 1 by the way of being threadedly coupled, thus convenient
The connecting flange 4 of different model is replaced, to sleeve 1 so as to be suitable for the installation of more connecting lines.
Sleeve 1 includes several segments mounting cylinder 12, uses the detachable connection method being threadedly coupled between adjacent mounting cylinder 12.
Movable current limiting plate 22 and set current limiting plate 21 are separately mounted to 12 both ends of mounting cylinder, 21 one end of set current limiting plate of mounting cylinder 12 with
22 one end of movable current limiting plate of another mounting cylinder 12 connects.21 one end of set current limiting plate of mounting cylinder 12 is provided with external screw thread connection
Portion 121,22 one end of movable current limiting plate of mounting cylinder 12 are provided with female threaded joint 122, and the external screw thread of adjacent mounting cylinder 12 connects
Socket part 121 and the engagement of 122 screw thread of female threaded joint.In some fluid media (medium)s in use, multistage restriction orifice makes for a long time
With rear, a large amount of dirt can be adhered on set current limiting plate 21 and movable current limiting plate 22, to influence the normal of multistage restriction orifice
It uses.It is detachably connected by the way that sleeve 1 is arranged to several segments mounting cylinder 12, and between mounting cylinder 12 using what is be threadedly coupled
Mode, it is convenient that set current limiting plate 21 and rotation current limiting plate are cleaned so as to open sleeve 1.
Sleeve 1 further includes connecting flange 4 and the positive connecting cylinder 14 at 21 end of set current limiting plate of mounting cylinder 12 and connect connection
The both ends of the anti-connecting cylinder 15 at 22 end of movable current limiting plate of flange 4 and mounting cylinder 12, positive connecting cylinder 14 and anti-connecting cylinder 15 are all divided
It is not threadedly coupled with sleeve 1 and connecting flange 4.
Fig. 3 and Fig. 4 is fixed with shifting block 222 on the circumferential surface of movable current limiting plate 22；It is offered on the circumferential surface of sleeve 1 and stirs slot
11, shifting block 222 is by stirring prominent 1 circumferential surface of sleeve of slot 11.Multistage restriction orifice passes through the several groups current limliting being arranged in sleeve 1
Component 2 carries out multistage current limliting decompression to the fluid for flowing through multistage restriction orifice in turn, to play more preferably to the fluid in pipeline
Current limliting antihypertensive effect.By stirring shifting block 222, movable current limiting plate 22 is rotated, thus 221 He of change activity metering hole
The overlapping area in set current limiting hole 211, and then being adjusted by flow to multistage restriction orifice.
Referring to figure 5 and figure 6, outer connection screw thread 212, the fixed limit of mounting cylinder 12 are provided on the circumferential surface of set current limiting plate 21
21 installation end of flowing plate is provided with the interior connection screw thread 123 engaged with 212 screw thread of connection screw thread outer on 21 circumferential surface of set current limiting plate.Gu
Fixed limit flowing plate 21, which is connected through a screw thread, to be fixed on mounting cylinder 12, so that convenient repair and replace to set current limiting plate 21.
Specifically used principle is as follows:
According to the fluid circuit to be installed multistage restriction orifice, suitable connecting flange 4 is selected to be installed on sleeve 1.
According to the decompression of fluid circuit and current limliting requirement, shifting block 222 is stirred, movable current limiting plate 22 is rotated, thus change activity
The overlapping area of metering hole 221 and set current limiting hole 211, and then change multistage restriction orifice passes through flow.Pass through fixed spiral shell
Movable current limiting plate 22 is fixed on corresponding position by bolt 31, to carry out holding setting by flow to multistage restriction orifice.?
After using multistage restriction orifice for a long time, multistage restriction orifice is disassembled from pipeline, connected mounting cylinder 12 is dismantled,
And then movable current limiting plate 22 and set current limiting plate 21 are cleaned.
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 multistage restriction orifice including sleeve (1) and is located at sleeve (1) internal several groups current limiting component (2), feature
Be: the current limiting component (2) includes the set current limiting plate (21) being fixedly and coaxially connected with sleeve (1) and around sleeve (1) axis
The movable current limiting plate (22) in line direction and sleeve (1) rotation connection；The set current limiting plate (21), which is provided with, axially penetrates through fixation
The set current limiting hole (211) of current limiting plate (21), the activity current limiting plate (22), which is provided with, axially penetrates through movable current limiting plate (22)
Movable metering hole (221)；The end face of the set current limiting plate (21) and movable current limiting plate (22) fits, rotation activity current limiting plate
(22), set current limiting hole (211) and movable metering hole (221) are overlapping, or movable current limiting plate (22) hides set current limiting hole (211)
Gear.
2. a kind of multistage restriction orifice according to claim 1, it is characterised in that: the circumferential surface of the activity current limiting plate (22)
On be fixed with shifting block (222)；It offers and stirs slot (11) on the circumferential surface of the sleeve (1), the shifting block (222) is by stirring slot
(11) prominent sleeve (1) circumferential surface.
3. a kind of multistage restriction orifice according to claim 2, it is characterised in that: multistage restriction orifice further includes will be movable
The fixed mechanism (3) that current limiting plate (22) and sleeve (1) are fixed；Fixing screwed hole (13) are provided on the peripheral wall of the sleeve (1),
The fixed mechanism (3) includes fixing bolt (31)；The fixing bolt (31) is engaged with fixing screwed hole (13) screw thread, described
The screw rod end of fixing bolt (31) is abutted with the circumferential surface of movable current limiting plate (22).
4. a kind of multistage restriction orifice according to claim 3, it is characterised in that: sleeve (1) includes several segments mounting cylinder
(12)；Movable current limiting plate (22) and set current limiting plate (21) are separately mounted to mounting cylinder (12) both ends, the fixation of mounting cylinder (12)
Current limiting plate (21) one end connects with movable current limiting plate (22) one end of another mounting cylinder (12), uses between adjacent mounting cylinder (12)
It is detachably connected.
5. a kind of multistage restriction orifice according to claim 4, it is characterised in that: the set current limiting of the mounting cylinder (12)
Plate (21) one end is provided with male threaded joint (121), and movable current limiting plate (22) one end of the mounting cylinder (12) is provided with interior
Threaded joints (122), the male threaded joint (121) and female threaded joint (122) screw thread of the adjacent mounting cylinder (12)
Engagement.
6. a kind of multistage restriction orifice according to claim 4, it is characterised in that: the circumferential surface of the set current limiting plate (21)
On be provided with outer connection screw thread (212), set current limiting plate (21) installation end of the mounting cylinder (12) is provided with and set current limiting
The interior connection screw thread (123) of outer connection screw thread (212) screw thread engagement on plate (21) circumferential surface.
7. a kind of multistage restriction orifice according to claim 1, it is characterised in that: sleeve (1) both ends are fixed respectively
There are connecting flange (4).
8. a kind of multistage restriction orifice according to claim 7, it is characterised in that: the connecting flange (4) and sleeve (1)
Using being detachably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821275343.9U CN208719666U (en) | 2018-08-08 | 2018-08-08 | A kind of multistage restriction orifice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821275343.9U CN208719666U (en) | 2018-08-08 | 2018-08-08 | A kind of multistage restriction orifice |
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| Publication Number | Publication Date |
|---|---|
| CN208719666U true CN208719666U (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821275343.9U Active CN208719666U (en) | 2018-08-08 | 2018-08-08 | A kind of multistage restriction orifice |
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| Country | Link |
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| CN (1) | CN208719666U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107763A (en) * | 2019-05-17 | 2019-08-09 | 浙江大学 | A kind of multistage orifice plate damping coil type guide rail stable-pressure device and its method |
| CN111609242A (en) * | 2020-04-28 | 2020-09-01 | 中船澄西船舶修造有限公司 | Throttle plate structure for main engine lubricating oil mixing |
| CN112406037A (en) * | 2020-10-30 | 2021-02-26 | 李应根 | Multi-stage flow adjusting mechanism of multi-cavity injection mold |
| CN112443673A (en) * | 2020-11-30 | 2021-03-05 | 湖南汉华京电清洁能源科技有限公司 | Pressure relief assembly |
| CN112697546A (en) * | 2020-12-08 | 2021-04-23 | 成都市环境保护科学研究院 | Laminated micro-flow hole negative pressure gas sample collecting device and method |
| CN113154398A (en) * | 2021-04-30 | 2021-07-23 | 北京高安屯垃圾焚烧有限公司 | Burn burning furnace mud back spray and mix burning system |
| CN113700958A (en) * | 2021-09-08 | 2021-11-26 | 中国航空工业集团公司西安飞机设计研究所 | Flange plate device with detachable flow limiting hole |
| CN115493016A (en) * | 2022-09-24 | 2022-12-20 | 杭州成套节流装置有限公司 | Porous distributed current-limiting orifice plate |
-
2018
- 2018-08-08 CN CN201821275343.9U patent/CN208719666U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107763A (en) * | 2019-05-17 | 2019-08-09 | 浙江大学 | A kind of multistage orifice plate damping coil type guide rail stable-pressure device and its method |
| CN110107763B (en) * | 2019-05-17 | 2020-04-10 | 浙江大学 | Multistage pore plate buffering spiral guide rail voltage stabilizing device and method thereof |
| CN111609242A (en) * | 2020-04-28 | 2020-09-01 | 中船澄西船舶修造有限公司 | Throttle plate structure for main engine lubricating oil mixing |
| CN112406037A (en) * | 2020-10-30 | 2021-02-26 | 李应根 | Multi-stage flow adjusting mechanism of multi-cavity injection mold |
| CN112443673A (en) * | 2020-11-30 | 2021-03-05 | 湖南汉华京电清洁能源科技有限公司 | Pressure relief assembly |
| CN112443673B (en) * | 2020-11-30 | 2022-09-20 | 湖南汉华京电清洁能源科技有限公司 | Pressure relief assembly |
| CN112697546A (en) * | 2020-12-08 | 2021-04-23 | 成都市环境保护科学研究院 | Laminated micro-flow hole negative pressure gas sample collecting device and method |
| CN113154398A (en) * | 2021-04-30 | 2021-07-23 | 北京高安屯垃圾焚烧有限公司 | Burn burning furnace mud back spray and mix burning system |
| CN113700958A (en) * | 2021-09-08 | 2021-11-26 | 中国航空工业集团公司西安飞机设计研究所 | Flange plate device with detachable flow limiting hole |
| CN115493016A (en) * | 2022-09-24 | 2022-12-20 | 杭州成套节流装置有限公司 | Porous distributed current-limiting orifice plate |
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