CN103438309A - Plunger type expansion device - Google Patents
Plunger type expansion device Download PDFInfo
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- CN103438309A CN103438309A CN2013103734958A CN201310373495A CN103438309A CN 103438309 A CN103438309 A CN 103438309A CN 2013103734958 A CN2013103734958 A CN 2013103734958A CN 201310373495 A CN201310373495 A CN 201310373495A CN 103438309 A CN103438309 A CN 103438309A
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- plunger
- cylinder barrel
- section
- type expansion
- accommodating section
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Abstract
The invention discloses a plunger type expansion device which comprises a first cylinder barrel, a plunger, a second cylinder barrel, a guiding sleeve and a pressing cover. The first cylinder barrel, the plunger and the second cylinder barrel are all hollow barrel bodies, the first cylinder barrel is divided into a connecting section and a containing section, the diameter of the connecting section is smaller than the diameter of the containing section, and external threads are arranged on the end portion of the connecting section and the end portion of the containing section. The plunger is located in the containing section of the first cylinder barrel and can slide in the axial direction of the containing section, one end of the plunger is inserted into the containing section, a shaft shoulder is arranged at the end of the plunger, and the other end of the plunger is extended out of the containing section and provided with external threads. Rib rings are arranged on the inner surface of the second cylinder barrel, the second cylinder barrel is divided into an installation section and a supporting section through the rib rings, and the first cylinder barrel is sleeved with the installation section of the second cylinder barrel through the external threads on the end portion of the containing section. The plunger is sleeved with the guiding sleeve through the other end of the plunger, and the guiding sleeve is located in the supporting section of the second cylinder barrel. The plunger is sleeved with the pressing cover through the other end of the plunger, and the pressing cover is detachably fixed on the end portion of the supporting section of the second cylinder barrel.
Description
Technical field
The present invention relates to the pipeline valve connection device, more particularly, relate to a kind of plunger type expansion bend of installing for pipeline valve.
Background technique
Due to country, for the installation dimension (as length) of valve unified standard not, valve products is constantly updated again, therefore in actual applications can be due to the installation dimension of the same specification valve of same manufacturer differently causes exchanging difficulty.General valve products is by the specification supply of material, due to the installation dimension difference of same specification valve, exchanging while installing and need cut or add long process pipeline.And prohibiting the scene of a fire in one's power during field work, it is very difficult being cut or add long process pipeline, causes that the replacing time is long, labor intensity is large.
Therefore, need to provide a kind of equipment that can solve the asynchronous interchange issues of same specification valve installation size.
Summary of the invention
The object of the present invention is to provide a kind ofly can solve the different interchange issues of same specification valve installation size, realize the purpose that shortens the replacing time and reduce labor intensity; Simultaneously, solve the equipment of the internal stress problem that pipe expansion is produced because of variation of ambient temperature or pipeline medium temperature variation.
To achieve these goals, the invention provides a kind of plunger type expansion bend, described plunger type expansion bend comprises the first cylinder barrel, plunger, the second cylinder barrel, guide sleeve and gland, and wherein, the first cylinder barrel, plunger, the second cylinder barrel are hollow cylinder; The first cylinder barrel is divided into linkage section and accommodating section, and the diameter of linkage section is less than the diameter of accommodating section, and the end of linkage section and accommodating section is equipped with outside thread; Plunger be arranged in the first cylinder barrel accommodating section and can be along the endwisely slipping of described accommodating section, an end of plunger stretches in described accommodating section and is provided with the shaft shoulder, it is outer and be provided with outside thread that the other end of plunger stretches out described accommodating section; The internal surface of the second cylinder barrel is provided with the rib circle and the second cylinder barrel is divided into construction section and supporting section by described rib circle, the external thread sleeve of the construction section of described the second cylinder barrel by the end of described accommodating section, on described the first cylinder barrel, is provided with sealing gasket between the rib circle of the end face of the accommodating section of the first cylinder barrel and the second cylinder barrel; The other end of guide sleeve by described plunger is placed on plunger and guide sleeve is arranged in the supporting section of described the second cylinder barrel; Gland is placed on the end of the supporting section that also removably is fixed on described the second cylinder barrel on plunger by the other end of described plunger, between described gland and described guide sleeve, is provided with seal ring.
The embodiment according to plunger type expansion bend of the present invention, described plunger type expansion bend also comprises the first flange and the second flange, described the first flange is fixed on the first cylinder barrel by the outside thread of the linkage section of the first cylinder barrel, and described the second flange is fixed on plunger by the outside thread of the other end of described plunger.
According to an embodiment of plunger type expansion bend of the present invention, described outside thread is the sealed pipe screw thread.
Plunger type expansion bend of the present invention can be by controlling the sealed pipe thread tolerance, select unlike material, the wall thickness of change plunger (cylinder barrel) etc. is applicable on various pressure pipings it; When ambient temperature, medium temperature change, plunger can stretch vertically, and pipeline is not produced to internal stress; The valve that can be used for the flange connection can be used for again the valve that internal thread connects; Be applicable to the exchange of same specification difference installation dimension valves, to pipeline, do not need cutting (or lengthening) to process, be conducive to shorten the replacing time, reduce labor intensity, and there are the characteristics such as simple in structure, that exchange is convenient.
The accompanying drawing explanation
Fig. 1 is the structural representation of the plunger type expansion bend of exemplary embodiment of the present.
Description of reference numerals:
1-the first flange, 2-the first cylinder barrel, 3-plunger, 4-the second cylinder barrel, 5-sealing gasket, 6-guide sleeve, 7-seal ring, 8-gland, 9-bolt, 10-the second flange.
Embodiment
Below, describe exemplary embodiment of the present invention in detail with reference to accompanying drawing.
Fig. 1 is the structural representation of the plunger type expansion bend of exemplary embodiment of the present.As shown in Figure 1, plunger type expansion bend of the present invention comprises the first cylinder barrel 2, plunger 3, the second cylinder barrel 4, guide sleeve 6 and gland 8.
Wherein, the first cylinder barrel 2, plunger 3, the second cylinder barrel 4 are hollow cylinder, and when the plunger type expansion bend is installed on pipeline valve, liquid still can pass through smoothly thus.
The first cylinder barrel 2 is divided into linkage section and accommodating section, and the diameter of linkage section is less than the diameter of accommodating section, and the end of linkage section and accommodating section is equipped with outside thread.Because the diameter of linkage section is less than the diameter of accommodating section, linkage section can provide constraints to the slip of the plunger 3 in accommodating section, makes plunger 3 have fixing sliding stroke.And the end of linkage section and accommodating section is equipped with the valve that outside thread had both made plunger type expansion bend of the present invention be connected for internal thread, the valve that also can plunger type expansion bend of the present invention also can be connected for flange by described outside thread mounting flange.
The internal surface of the second cylinder barrel 4 is provided with the rib circle and the second cylinder barrel 4 is divided into construction section and supporting section by the rib circle, the external thread sleeve of the end of the construction section of the second cylinder barrel 4 by accommodating section, on the first cylinder barrel 2, is provided with sealing gasket 5 between the rib circle of the end face of the accommodating section of the first cylinder barrel 2 and the second cylinder barrel 4.Owing to having selected screw thread to add the double seal mode of sealing gasket between the first cylinder barrel 2 and the second cylinder barrel 4, can guarantee better the reliability sealed.
The other end of guide sleeve 6 by plunger 3 is placed on plunger 3 and guide sleeve 6 is arranged in the supporting section of the second cylinder barrel 4, guide sleeve 6 is mainly plunger 3 to be played to supporting make the plunger 3 can endwisely slipping along the accommodating section of the first cylinder barrel 2, the purpose of using guide sleeve 6 to be supported is in order to reduce sliding contact surface, to facilitate manufacturing.
In order to make plunger type expansion bend of the present invention not only can be used for the valve of flange connection but also can be used for the valve that internal thread connects, according to another embodiment of the invention, the plunger type expansion bend also comprises the first flange 1 and the second flange 10, the first flange 1 is fixed on the first cylinder barrel 2 by the outside thread of the linkage section of the first cylinder barrel 2, and the second flange 10 is fixed on plunger 3 by the outside thread of the other end of plunger 3.Thus, while using the first flange 1, the second flange 10, the plunger type expansion bend is applicable to the valve installation that flange connects; While removing the first flange 1, the second flange 10, the valve installation that the applicable internal thread of plunger type expansion bend connects.And plunger 3, can also be along circumferential rotation except can be along endwisely slipping, this is convenient to the connection between screw on flange.
Preferably, above-mentioned outside thread is the sealed pipe screw thread, can guarantee sealability by the tolerance grade of controlling the sealed pipe screw thread.
While using plunger type expansion bend of the present invention, can, by the tolerance of controlling the sealed pipe screw thread, the wall thickness of selecting unlike material manufacture, change plunger or cylinder barrel, it be applicable on various pressure pipings.And when the plunger type expansion bend changes in ambient temperature, medium temperature, plunger can stretch vertically, thereby realizes the function of expander, make temperature variation not produce internal stress to pipeline.The exchange that can also make the plunger type expansion bend be applicable to same specification different size valve that endwisely slips of plunger is installed.
In sum, that plunger type expansion bend of the present invention has is simple in structure, exchange the characteristics such as convenient, effectively shortens the replacing time, reduces labor intensity.
The invention is not restricted to above-described embodiment, without departing from the present invention, can carry out various changes and modifications.
Claims (3)
1. a plunger type expansion bend, is characterized in that, described plunger type expansion bend comprises the first cylinder barrel, plunger, the second cylinder barrel, guide sleeve and gland, wherein,
The first cylinder barrel, plunger, the second cylinder barrel are hollow cylinder;
The first cylinder barrel is divided into linkage section and accommodating section, and the diameter of linkage section is less than the diameter of accommodating section, and the end of linkage section and accommodating section is equipped with outside thread;
Plunger be arranged in the first cylinder barrel accommodating section and can be along the endwisely slipping of described accommodating section, an end of plunger stretches in described accommodating section and is provided with the shaft shoulder, it is outer and be provided with outside thread that the other end of plunger stretches out described accommodating section;
The internal surface of the second cylinder barrel is provided with the rib circle and the second cylinder barrel is divided into construction section and supporting section by described rib circle, the external thread sleeve of the construction section of described the second cylinder barrel by the end of described accommodating section, on described the first cylinder barrel, is provided with sealing gasket between the rib circle of the end face of the accommodating section of the first cylinder barrel and the second cylinder barrel;
The other end of guide sleeve by described plunger is placed on plunger and guide sleeve is arranged in the supporting section of described the second cylinder barrel;
Gland is placed on the end of the supporting section that also removably is fixed on described the second cylinder barrel on plunger by the other end of described plunger, between described gland and described guide sleeve, is provided with seal ring.
2. plunger type expansion bend according to claim 1, it is characterized in that, described plunger type expansion bend also comprises the first flange and the second flange, described the first flange is fixed on the first cylinder barrel by the outside thread of the linkage section of the first cylinder barrel, and described the second flange is fixed on plunger by the outside thread of the other end of described plunger.
3. plunger type expansion bend according to claim 1, is characterized in that, described outside thread is the sealed pipe screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103734958A CN103438309A (en) | 2013-08-23 | 2013-08-23 | Plunger type expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103734958A CN103438309A (en) | 2013-08-23 | 2013-08-23 | Plunger type expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103438309A true CN103438309A (en) | 2013-12-11 |
Family
ID=49692011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103734958A Pending CN103438309A (en) | 2013-08-23 | 2013-08-23 | Plunger type expansion device |
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| Country | Link |
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| CN (1) | CN103438309A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195731A (en) * | 2019-06-20 | 2019-09-03 | 淄博鸿润新材料有限公司 | High pressure resistant wear-resistant ceramic plunger |
| CN112228650A (en) * | 2020-11-21 | 2021-01-15 | 张静 | Hydraulic engineering pipeline fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0428120A2 (en) * | 1989-11-13 | 1991-05-22 | FIMCIM S.r.l. | Releasable connection part for conduits |
| US20070057502A1 (en) * | 2005-09-14 | 2007-03-15 | Aasef Shafik | Adjustable plumbing fittings |
| CN101900235A (en) * | 2010-07-29 | 2010-12-01 | 江苏贝特管件有限公司 | Zero-thrust sleeve type compensator |
| CN202140715U (en) * | 2011-06-08 | 2012-02-08 | 武汉海王机电工程技术公司 | Mechanical automatic regulation telescopic unit |
| CN203488886U (en) * | 2013-08-23 | 2014-03-19 | 攀钢集团工程技术有限公司 | Plunger type expansion device |
-
2013
- 2013-08-23 CN CN2013103734958A patent/CN103438309A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0428120A2 (en) * | 1989-11-13 | 1991-05-22 | FIMCIM S.r.l. | Releasable connection part for conduits |
| US20070057502A1 (en) * | 2005-09-14 | 2007-03-15 | Aasef Shafik | Adjustable plumbing fittings |
| CN101900235A (en) * | 2010-07-29 | 2010-12-01 | 江苏贝特管件有限公司 | Zero-thrust sleeve type compensator |
| CN202140715U (en) * | 2011-06-08 | 2012-02-08 | 武汉海王机电工程技术公司 | Mechanical automatic regulation telescopic unit |
| CN203488886U (en) * | 2013-08-23 | 2014-03-19 | 攀钢集团工程技术有限公司 | Plunger type expansion device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195731A (en) * | 2019-06-20 | 2019-09-03 | 淄博鸿润新材料有限公司 | High pressure resistant wear-resistant ceramic plunger |
| CN112228650A (en) * | 2020-11-21 | 2021-01-15 | 张静 | Hydraulic engineering pipeline fixing device |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131211 |