CN203273174U - Multistage restriction orifice structure - Google Patents
Multistage restriction orifice structure Download PDFInfo
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- CN203273174U CN203273174U CN 201320316447 CN201320316447U CN203273174U CN 203273174 U CN203273174 U CN 203273174U CN 201320316447 CN201320316447 CN 201320316447 CN 201320316447 U CN201320316447 U CN 201320316447U CN 203273174 U CN203273174 U CN 203273174U
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- restriction orifice
- multistage
- flanges
- orifice structure
- flange
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Abstract
The utility model discloses a multistage restriction orifice structure which comprises two flanges connected together through a fastener. Restriction orifices are arranged in center holes of the two flanges. The multistage restriction orifice structure overcomes the defects that existing high-differential pressure multistage restriction orifices are welded into a whole, as a result, each restriction orifice cannot be disassembled, and measurement is not convenient. The multistage restriction orifice structure has the advantages of being compact in structure, sturdy and durable, and facilitating overhaul, disassembly, dimensional measurement and replacement of all worn parts.
Description
Technical field
The utility model belongs to Coal Chemical Industry process pipelines chemical medium High Pressure Difference current-limiting apparatus technical field, is specifically related to a kind of multistage restriction orifice structure.
Background technique
Restriction orifice is to increase the local resistance loss of fluid in pipe string by dwindle the medium actual internal area in pipeline; to reduce the pressure reduction of flowing medium to miscellaneous equipment on this depot siding, reach the protection miscellaneous equipment and be operated in the permissible pressure scope or guarantee that miscellaneous equipment is not by medium cavitation erosion, flash distillation and a kind of device of washing away etc.That the restriction orifice of High Pressure Difference generally is designed to is multistage (3 grades, 4 grades or more than), step pressure reducing.Common multistage High Pressure Difference restriction orifice structure is to be welded by restriction orifice is connected with sectional pipeline.Restriction orifice can not be taken out after forming a solder, until use scrap till.Can't detect the abrasion condition of restriction orifice and measure in maintenance process, therefore can't confirm the current limitation effect of restriction orifice.In addition, if because the reason of flowing medium high temperature causes restriction orifice high temperature creep and deformation, perhaps because causing restriction orifice to come off, fragment into fragment, restriction orifice structural strength deficiency and differential pressure reason blow to the downstream process pipeline, the safety of the moving equipment such as the steam turbine that moving of entail dangers to downstream, pump, the restriction orifice fragment that comes off can break rotor or the impeller of pump.The inefficacy of restriction orifice can cause the change fully of working condition, the lighter or cause the modulating valve of relevant on-line operation to lose regulatory function, and the equipment that severe one can cause the downstream moving is impaired, device stops or cause environmental nuisance etc.
The model utility content
The purpose of this utility model is to provide a kind of multistage restriction orifice structure, has solved existing multistage restriction orifice structure inconvenience dismounting, is inconvenient to the problem that detects, measures and overhaul.
The technological scheme that the utility model adopts is: a kind of multistage restriction orifice structure, comprise two flanges that link together by fastening piece, and be provided with restriction orifice in the center hole of two flanges.
Characteristics of the present utility model also are,
Restriction orifice adopts the ring joint face structure, and with the concentricity axle of flange.
Restriction orifice is nested between two flanges.
Restriction orifice is nested between two flanges by grip slipper.
Restriction orifice is fixed on flange by retaining collar.
The center hole wall interference fit of retaining collar and flange, and retaining collar is fixed on the center hole wall of flange by fixator pins.
The beneficial effects of the utility model are: a kind of multistage restriction orifice structural change of the utility model the multistage restriction orifice of existing High Pressure Difference be welded as a whole, the shortcoming that each sheet restriction orifice is non-dismountable, be not easy to measure, the realization compact structure, sturdy and durable of knowing clearly, is convenient to dimension survey, is convenient to change the advantage of each wearout parts the easy access dismounting.
Description of drawings
Fig. 1 is an embodiment's of a kind of multistage restriction orifice structure of the utility model structural representation;
Fig. 2 is another embodiment's of the utility model structural representation.
In figure, 1. flange, 2. fastening piece, 3. grip slipper, 4. restriction orifice, 5. fixator pins, 6. retaining collar.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The utility model provides a kind of multistage restriction orifice structure, as shown in Figure 1, comprises in the center hole of two 1, two flanges 1 of flange that link together by fastening piece 2 being provided with restriction orifice 4.Restriction orifice 4 adopts the ring joint face structures, and with the concentricity axle of flange 1.Restriction orifice 4 is nested between two flanges 1.As shown in Figure 2, restriction orifice 4 is nested between two flanges 1 by grip slipper 3.Restriction orifice 4 is fixed on flange 1 by retaining collar 6.The center hole wall interference fit of retaining collar 6 and flange 1, and retaining collar 6 is fixed on the center hole wall of flange 1 by fixator pins 5.Between two flanges 1, nested restriction orifice 4 adopts the ring joint face structure, plays simultaneously the effect of sealing.
When needs detect, measure or overhaul restriction orifice 4, only need loosening fasteners 2, make two flanges 1 separately, just can be to each sheet restriction orifice 4 direct-detections and the measurement in the middle of it.After complete, then its installation is got final product.The utility model compact structure, sturdy and durable.When assembling respectively flange 1 center hole restriction orifice 4, retaining collar 6 and fixator pins 5 in manufacture process, each circumferential weld is with argon arc welding soldering and sealing, then imposes electric welding and reinforce.Restriction orifice 4 adopts the ring joint face structure, and reliable sealing effect is provided.
Claims (6)
1. a multistage restriction orifice structure, is characterized in that: comprise two flanges (1) that link together by fastening piece (2), be provided with restriction orifice (4) in the center hole of two described flanges (1).
2. a kind of multistage restriction orifice structure according to claim 1, it is characterized in that: described restriction orifice (4) adopts the ring joint face structure, and with the concentricity axle of described flange (1).
3. a kind of multistage restriction orifice structure according to claim 1, it is characterized in that: described restriction orifice (4) is nested between two described flanges (1).
4. a kind of multistage restriction orifice structure according to claim 1, it is characterized in that: described restriction orifice (4) is nested between two described flanges (1) by grip slipper (3).
5. a kind of multistage restriction orifice structure according to claim 1, it is characterized in that: described restriction orifice (4) is fixed on described flange (1) by retaining collar (6).
6. a kind of multistage restriction orifice structure according to claim 5, it is characterized in that: the center hole wall interference fit of described retaining collar (6) and described flange (1), and described retaining collar (6) is fixed on the center hole wall of described flange (1) by fixator pins (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320316447 CN203273174U (en) | 2013-06-03 | 2013-06-03 | Multistage restriction orifice structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320316447 CN203273174U (en) | 2013-06-03 | 2013-06-03 | Multistage restriction orifice structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203273174U true CN203273174U (en) | 2013-11-06 |
Family
ID=49503583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320316447 Expired - Fee Related CN203273174U (en) | 2013-06-03 | 2013-06-03 | Multistage restriction orifice structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203273174U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075069A (en) * | 2014-07-19 | 2014-10-01 | 李彩云 | Throttling orifice plate component |
| CN105840945A (en) * | 2016-05-31 | 2016-08-10 | 成都国光电子仪表有限责任公司 | Throttle orifice |
| CN107270019A (en) * | 2016-04-07 | 2017-10-20 | 丹佛斯有限公司 | Dynamic throttling hole in catheter pressure |
| CN115199849A (en) * | 2021-04-08 | 2022-10-18 | 中国石油化工股份有限公司 | Current-limiting orifice plate with cutting function |
-
2013
- 2013-06-03 CN CN 201320316447 patent/CN203273174U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075069A (en) * | 2014-07-19 | 2014-10-01 | 李彩云 | Throttling orifice plate component |
| CN107270019A (en) * | 2016-04-07 | 2017-10-20 | 丹佛斯有限公司 | Dynamic throttling hole in catheter pressure |
| CN105840945A (en) * | 2016-05-31 | 2016-08-10 | 成都国光电子仪表有限责任公司 | Throttle orifice |
| CN115199849A (en) * | 2021-04-08 | 2022-10-18 | 中国石油化工股份有限公司 | Current-limiting orifice plate with cutting function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20190603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |