CN203585697U - Restriction orifice assembly - Google Patents
Restriction orifice assembly Download PDFInfo
- Publication number
- CN203585697U CN203585697U CN201420064077.0U CN201420064077U CN203585697U CN 203585697 U CN203585697 U CN 203585697U CN 201420064077 U CN201420064077 U CN 201420064077U CN 203585697 U CN203585697 U CN 203585697U
- Authority
- CN
- China
- Prior art keywords
- internal thread
- short tube
- connection
- restriction orifice
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000002445 nipple Anatomy 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
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- Pipe Accessories (AREA)
Abstract
The utility model provides a restriction orifice assembly, which belongs to the technical field of chemical equipment accessories. The restriction orifice assembly structurally comprises a thread connection tube, an internal thread cap, a restriction orifice sheet and a connection short tube, wherein an internal thread is opened in the front port of the thread connection tube, and an external thread is opened in the rear end tube body of the thread connection tube; a projection ring is arranged at the front end of the connection short tube, a top wall is arranged at the tail portion of the internal thread cap, and a threading connection hole is opened in the centre of the top wall; the diameter of the projection ring is greater than the diameter of the threading connection hole; the opening portion of the internal thread cap is forward and penetrates through the connection short tube, the projection ring of the connection short tube is abutted against the top wall in the inner cavity of the internal thread cap, and the opening portion of the internal thread cap is in threaded connection with the rear end tube body of the thread connection tube; the restriction orifice sheet is arranged between the tail end of the thread connection tube and the projection ring of the connection short tube. The restriction orifice assembly is capable of reducing manufacturing cost, and easy to install and detach; moreover, the various accessories are interchangeable.
Description
Technical field
The utility model relates to chemical industry equipment accessory technical field, specifically a kind of restriction orifice assembly.
Background technique
General, the pressure of low pressure process pipeline purges the general flange-type that adopts, and in the middle of the flange of two DN15, adds the restriction orifice that diameter is 55mm, and then one end is welded on stainless steel pressure pipe, and the other end is welded on copper gas source pipe.Not only materials waste, and on-the-spot installation is loaded down with trivial details, easily goes wrong, particularly Stainless Steel Tube and copper pipe welding, not only welding difficulty, and easily leak, cause pressure inaccurate.Dismounting difficulty simultaneously, is unfavorable for daily cleaning and maintenance, repair.Existing restriction orifice manufacture cost is high, installs, safeguards inconvenient.
Summary of the invention
Technical assignment of the present utility model is to solve the deficiencies in the prior art, and a kind of restriction orifice assembly is provided.
The technical solution of the utility model realizes in the following manner, this restriction orifice assembly, and its structure comprises screw nipple, internal thread nut, metering hole plate and is connected short tube,
In the front port of screw nipple, offer internal thread, the rear end pipe of screw nipple offers outside thread with it;
Connect short tube front end and be provided with convex ring,
Internal thread nut afterbody is provided with roof, and roof center offers jack hole; Convex ring diameter is greater than jack hole diameter;
The opening portion of internal thread nut also passes and connects short tube forward, and connects short tube convex ring in internal thread nut inner chamber and roof apical grafting, and the opening portion of internal thread nut is threaded with the rear end pipe shaft of screw nipple;
Screw nipple end is provided with metering hole plate with being connected between short tube convex ring.
Metering hole plate front-end face and ear end face are respectively arranged with pad.
The beneficial effect that the utility model compared with prior art produced is:
This restriction orifice assembly is the restriction orifice assembly that a kind of dirty pressure medium transmitter pressure purges use, and being specially adapted to processing medium is the chemical plant installations that gas and pressure are not more than 50Kpa.By simple assembling, can realize installation and maintenance, and manufacture cost is more existing declines to a great extent.
This restriction orifice assembly manufacture cost reduces, is easy to installation and removal, and each accessory can exchange.
This restriction orifice component design is reasonable, simple in structure, safe and reliable, easy to use, be easy to safeguard, has good value for applications.
Accompanying drawing explanation
Accompanying drawing 1 is cross-sectional view of the present utility model;
Accompanying drawing 2 is structural representations of the present utility model;
Accompanying drawing 3 is axle TV structure schematic diagram of the present utility model.
Mark in accompanying drawing represents respectively:
1, screw nipple, 2, internal thread, 3, outside thread,
4, connect short tube, 5, convex ring,
6, internal thread nut, 7, roof, 8, jack hole,
9, metering hole plate, 10, metering hole, 11, pad.
Embodiment
Below in conjunction with accompanying drawing, restriction orifice assembly of the present utility model is described in detail below.
As shown in drawings, restriction orifice assembly of the present utility model, its structure comprises screw nipple 1, internal thread nut 6, metering hole plate 9 and is connected short tube 4, and in the front port of screw nipple 1, offer internal thread 2, the rear end pipe of screw nipple offers outside thread 3 with it; Connect short tube 4 front ends and be provided with convex ring 5, internal thread nut 6 afterbodys are provided with roof 7, and roof 7 centers offer jack hole 8; Convex ring 5 diameters are greater than jack hole 8 diameters; The opening portion of internal thread nut 6 also passes and connects short tube 4 forward, and connects short tube convex ring 5 in internal thread nut inner chamber and roof 7 apical graftings, and the opening portion of internal thread nut 6 is threaded with the rear end pipe shaft of screw nipple 1; Screw nipple 1 end is provided with metering hole plate 9 with being connected between short tube convex ring 5.Metering hole plate 9 front-end faces and ear end face are respectively arranged with pad 11.
The technological scheme of this restriction orifice component design is: keep the key technical indexes of restriction orifice constant, changing restriction orifice into diameter that volume obviously reduces is 18mm constrictor, be arranged in two accessories of restriction orifice assembly, these two accessories adopt M20*1.5 screw thread to be connected.One end that restriction orifice assembly accesses pressure pipe adopts welding type, and the one end that connects gas source pipe adopts 1/4 cun of internal thread form, is conveniently connected with push-in joint for plastic tube with conventional copper pipe gas source connector, reaches the object that the loading, unloading of convenient peace are torn open.
During installation, Φ 14*2 is connected to short tube one side and be directly welded on pressure pipe, internal thread G1/4 side is connected with push-in joint for plastic tube with conventional copper pipe gas source connector, completes installation.When needs, take apart and clear up or when other is safeguarded, as long as nut is taken apart.
Screw nipple adopts internal thread 1/4 accessory; Connect short tube and adopt Φ 14*2 short tube accessory; Internal thread nut adopts internal thread M20*1.5 nut.In nut, having opening diameter is metering hole plate and two pads of 0.4mm.
This restriction orifice assembly is that metering hole plate is assembled in two links, and volume is small and exquisite, and low cost of manufacture is convenient to installation and removal.Being applicable to pressure purges lower than dirty, the dirty gas pressure of 50Kpa.
Claims (1)
1. restriction orifice assembly, is characterized in that comprising screw nipple, internal thread nut, metering hole plate and is connected short tube,
In the front port of screw nipple, offer internal thread, the rear end pipe of screw nipple offers outside thread with it;
Connect short tube front end and be provided with convex ring,
Internal thread nut afterbody is provided with roof, and roof center offers jack hole; Convex ring diameter is greater than jack hole diameter;
The opening portion of internal thread nut also passes and connects short tube forward, and connects short tube convex ring in internal thread nut inner chamber and roof apical grafting, and the opening portion of internal thread nut is threaded with the rear end pipe shaft of screw nipple;
Screw nipple end is provided with metering hole plate with being connected between short tube convex ring; Metering hole plate front-end face and ear end face are respectively arranged with pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064077.0U CN203585697U (en) | 2014-02-13 | 2014-02-13 | Restriction orifice assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064077.0U CN203585697U (en) | 2014-02-13 | 2014-02-13 | Restriction orifice assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203585697U true CN203585697U (en) | 2014-05-07 |
Family
ID=50583611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064077.0U Expired - Lifetime CN203585697U (en) | 2014-02-13 | 2014-02-13 | Restriction orifice assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203585697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422534A (en) * | 2015-11-25 | 2016-03-23 | 中国航空工业集团公司沈阳飞机设计研究所 | Flow limiting valve |
-
2014
- 2014-02-13 CN CN201420064077.0U patent/CN203585697U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422534A (en) * | 2015-11-25 | 2016-03-23 | 中国航空工业集团公司沈阳飞机设计研究所 | Flow limiting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |