CN2122996U - Corrosion-resisting ball expansion joint - Google Patents
Corrosion-resisting ball expansion joint Download PDFInfo
- Publication number
- CN2122996U CN2122996U CN 92208957 CN92208957U CN2122996U CN 2122996 U CN2122996 U CN 2122996U CN 92208957 CN92208957 CN 92208957 CN 92208957 U CN92208957 U CN 92208957U CN 2122996 U CN2122996 U CN 2122996U
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- CN
- China
- Prior art keywords
- fluoroplastic
- corrosion
- expansion joint
- bulb
- shell
- 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.)
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Abstract
The utility model relates to a corrosion-resisting ball expansion joint, which is used to compensate the pipelines of corrosive media, like acid, alkalis, salt, etc. The utility model is composed of a housing, a fluoroplastic lining, a ball tube, a pressure compensation device, etc. The purpose-made fluoroplastic lining is of corrosion resistance, and the housing is of pressure resistance. The pressure compensation device which is arranged on a sealing ring overcomes the inherent defects of the heat expansion and cooling shrinkage of fluoroplastic and the creep deformation of the fluoroplastic.
Description
The utility model relates to a kind of corrosion-resistant ball expansion joint, it is applicable to that compensation such as the expanding with heat and contract with cold of strong corrosive media pipelines such as anti-various acid, alkali, salt, alignment error use, its nominal diameter Dg15～300mm, pressure 4.5～6MPa, temperature-100～250 ℃.
Known anticorrosion pipeline expansion joint, the corrugated expansion joint of making as fluoroplastic, owing to only depend on self material to bear pressure, so withstand voltage low, as the fluoroplastic expansion joint of latus rectum 300mm, in the time of 250 ℃, withstand voltage only 0.05Mpa can not satisfy industrial requirements.And the spherical compensator that metallic material is made only is used on the heat distribution pipeline, and is not corrosion-resistant, as not anti-various acid, alkali, salt, organic solvent, chloroazotic acid etc.
That the utility model is intended to propose is a kind of not only anti-corrosion, but also ball-type expansion joint withstand voltage, heatproof, to solve above-mentioned shortcoming.
The technical solution of the utility model as shown in Figure 1, shell (1) is formed by cast casting, its wall thickness is determined according to the highest pressure resistance.Shell (1) carries out fluoroplastics lining according to the fluoroplastic technological requirement again through machine tooling.The size of seal contact face of the flange A of shell fluoroplastics lining (2) from the shell (1) begins lining, serve as a contrast to the size of seal contact face at flange B place only.(2) through high-frequency spark detection and hydraulic test and do not produce spark-over, it is qualified that crackle and leakage phenomenon then are considered as.Bulb (4) is formed by iron casting or other material forges, cutting forms, and with (1), (2) requirement, is lined with bulb fluoroplastics lining (9), and lining is from the size of seal contact face of G to D place flange.The adapter (10) of bulb (4) right-hand member is made by metallic material, with (1) and (2) requirement, is lined with and takes over fluoroplastics lining (11), and lining ends from E to F place.One seal ring (3) and two road seal rings (5) are housed between shell (1) and the bulb (4), and (3) and (5) add wear-resisting filler by teflon or pure fluoroplastic are formed.Because employed medium is severe corrosive, in case leak then the shell that can rot causes product rejection, so require sealing reliably.And the shortcoming of fluoroplastic maximum is expand with heat and contract with cold big (bigger 10 times than outer steel shell) and intrinsic creep.So a pressure compensator (7) is set, when temperature raises or other reason expands fluoroplastic (lining or, two road seal rings) to cause fluoroplastic distortion or creep, when temperature reduces or other reason when fluoroplastic are shunk, pressure compensator (7) pushes away two road seal rings (5) left by pressing plate (6), and two road seal rings (5) push away bulb (4) left.Two road seal rings (5) and together seal ring (3) remain certain sealing load and can not make dielectric leakage.
Pressure compensator (7) can be that cylindrical spring or butterfly spring or other can produce the mechanism of pressure.If select cylindrical spring, then add a pressing plate (6) on the cylindrical spring left side, the right compresses with gland (8), and gland (8) is gone up with bolt, nut (12), (13) and is fixed.
The utility model has the advantages that what contact with strong corrosive media is the splendid fluoroplastic of antiseptic property, and fluoroplastic are strengthened and protection by the iron and steel shell, so not only anti-corrosion but also withstand voltage.Pressure compensator particularly is set overcomes the expand with heat and contract with cold defective of big and creep of fluoroplastic.
Be described further below in conjunction with accompanying drawing 1.
The last ball external diameter of bulb (4) is 1.1～1.4 times of straight tube external diameter, and it is 10～20 ℃ that bulb allows rotational angle.Fluoroplastics lining nexine (2), (9), (11) thickness 0.05～15mm, fluoroplastic select FEP or PTFE or other fluoroplastic.The purpose that (10) are taken in design is to be convenient to change two road seal rings (5).The external diameter of taking over upper flange E and bulb upper flange D is less than two road seal ring (5) internal diameters and gland (8) internal diameter size, when (5) life time then, take off adapter (10), can successfully two new road seal rings (5) be installed by flange D.One seal ring (3) if replacing take off gland (8), pressure compensator (7) and bulb (4) are promptly replaceable.Flange A and flange F all get the standard measure flange.
Embodiment: embodiment is installed.
Fig. 2 is the initial state structural representation that 4 spherical expansion joints are installed, and wherein (14) are connecting bends, and (15) are to connect straight tube.Fig. 3 is the later deformation state structural representation of pipeline heat expansion.
Claims (2)
1, a kind of corrosion-resistant ball expansion joint mainly is made up of shell and bulb, it is characterized in that:
A, shell, bulb and adapter are provided with fluoroplastics lining;
On b, the seal ring pressure compensator is set.
2, by the described corrosion-resistant ball expansion joint of claim 1, it is characterized in that:
The ball external diameter is 1.1～1.4 times of external diameter of pipe on a, the bulb, and rotational angle is 10 °～20 °;
B, fluoroplastics lining layer thickness are 0.05～15mm;
C, adapter and bulb adpting flange external diameter are less than two road seal ring internal diameter and gland internal diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92208957 CN2122996U (en) | 1992-05-02 | 1992-05-02 | Corrosion-resisting ball expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92208957 CN2122996U (en) | 1992-05-02 | 1992-05-02 | Corrosion-resisting ball expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2122996U true CN2122996U (en) | 1992-11-25 |
Family
ID=4954343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92208957 Granted CN2122996U (en) | 1992-05-02 | 1992-05-02 | Corrosion-resisting ball expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2122996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979974A (en) * | 2011-09-02 | 2013-03-20 | 株式会社东全 | Expansion flexible pipe joint |
| CN111902665A (en) * | 2017-12-07 | 2020-11-06 | 泰科消防产品有限合伙公司 | Adjustable rotating member |
-
1992
- 1992-05-02 CN CN 92208957 patent/CN2122996U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979974A (en) * | 2011-09-02 | 2013-03-20 | 株式会社东全 | Expansion flexible pipe joint |
| CN102979974B (en) * | 2011-09-02 | 2015-02-11 | 株式会社东全 | Expansion flexible pipe joint |
| CN111902665A (en) * | 2017-12-07 | 2020-11-06 | 泰科消防产品有限合伙公司 | Adjustable rotating member |
| US11660619B2 (en) | 2017-12-07 | 2023-05-30 | Tyco Fire Products Lp | Adjustable swivel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |