CN202360955U - Limit type high-temperature pipeline expansion piece - Google Patents
Limit type high-temperature pipeline expansion piece Download PDFInfo
- Publication number
- CN202360955U CN202360955U CN2011204607195U CN201120460719U CN202360955U CN 202360955 U CN202360955 U CN 202360955U CN 2011204607195 U CN2011204607195 U CN 2011204607195U CN 201120460719 U CN201120460719 U CN 201120460719U CN 202360955 U CN202360955 U CN 202360955U
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- CN
- China
- Prior art keywords
- sliding tube
- type high
- limit
- expansion bend
- polytetrafluoroethylene ring
- 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 - Fee Related
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Abstract
The utility model relates to a limit type high-temperature pipeline expansion piece, which comprises a gland (2), a sliding pipe (4) and a pipeline expansion piece body (1) sheathed at the two ends of the sliding pipe (4), wherein the inner wall of one end of the pipeline expansion piece body (1), which is connected with the sliding pipe (4), is provided with a stepped hole (1.1); and the gland (2) comprises a sleeve (2.1) which is sheathed on the sliding pipe (4), and is positioned in the stepped hole (1.1) of the pipeline expansion piece body (1), and a cavity formed by the pipeline expansion piece body (1), the gland (2) and the sleeve (2.1) is filled with a packing layer. The limit type high-temperature pipeline expansion piece provided by the utility model has the advantages of favorable sealing performance and long service life.
Description
Technical field
The utility model relates to a kind of pipeline extension device, belongs to the pipeline connection technology field.
Background technique
Pipeline extension device is during pipeline connects because the link that the dimensional changes that causes of expanding with heat and contract with cold is recompensed especially for the pipeline that operates under the condition of high temperature, guarantees the key equipment of the normal operation of pipeline during expansion bend.What pipeline extension device was the most frequently used has two kinds, and a kind of is the rubber tubing expansion bend, and another kind is the metallic conduit expansion bend;
The rubber tubing expansion bend has following advantage: volume is little, in light weight, good springiness, installation and maintenance convenient; Can produce during installation axially, laterally, warp-wise, angular displacement, do not receive the obstructed heart of user pipe, the uneven restriction of flange; Can reduce structure-borne noise during work, vibration absorption ability is strong; With special synthetic rubber can be high temperature resistant, acid resistant alkali, oil resistant, be the ideal product of chemical industry anticorrosion pipeline; But its flexible compensation amount is less greatly, bearing capacity is relatively poor, and the metallic conduit expansion bend can reach this requirement; But the sealability of metallic conduit expansion bend is relatively poor.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of pipeline extension device with better sealability is provided.
The purpose of the utility model is achieved in that a kind of limit-type high-temperature pipe expansion bend; The body that said pipeline extension device includes gland, sliding tube and is set in the sliding tube two ends; The end inwall that said body is connected with sliding tube is provided with step hole, and said gland includes sleeve, and said sleeve set is on sliding tube; And be positioned at the step hole of body, the cavity that said body, gland and sleeve constitute is filled with packing layer.
A kind of limit-type high-temperature pipe expansion bend of the utility model is provided with metal gasket between the step surface of said packing layer and step hole.
A kind of limit-type high-temperature pipe expansion bend of the utility model, the outer wall of said body is provided with the body flange, and the outer wall of said sleeve is provided with connecting plate, passes through bolt between said body flange and the connecting plate with the packing layer compacting.
A kind of limit-type high-temperature pipe expansion bend of the utility model, the outer wall of said sliding tube is provided with the sliding tube flange, and said body flange, connecting plate and sliding tube flange are connected through bolt.
A kind of limit-type high-temperature pipe expansion bend of the utility model; Said packing layer includes high carbon fiber layer; Be filled with polytetrafluoroethylene ring in the said high carbon fiber layer, and polytetrafluoroethylene ring is set on the sliding tube internal surface of polytetrafluoroethylene ring and the closely contact mutually of the outer wall of sliding tube.
Compared with prior art, the beneficial effect of the utility model is:
The packing layer of the utility model can provide duplicate protection; After being the Lubricants mummification of convenient lubricating grease and aquadag formation; Teflon also can provide enough lubricating; Thereby make the packing layer of the utility model have longer working life, higher sealing effect, thereby make the pipeline extension device of this packing layer of use have better sealing effect and working life; Simultaneously in pipeline extension device, add metal gasket, thereby make packing layer can obtain better consolidation effect, help improving the sealing effect of pipeline extension device.
Description of drawings
Fig. 1 is the structural representation of pipeline extension device of the present invention.
Fig. 2 is Fig. 1's
partial enlarged drawing.
Fig. 3 is a main body structure schematic representation of the present invention.
Fig. 4 is the structural representation of gland of the present invention.
Wherein:
Step hole 1.1, body flange 1.2;
Sleeve 2.1, connecting plate 2.2;
Sliding tube flange 4.1.
Embodiment
Referring to Fig. 1 ~ 4, a kind of limit-type high-temperature pipe expansion bend that the utility model relates to, the body 1 that said pipeline extension device includes gland 2, sliding tube 4 and is set in sliding tube 4 two ends; The outer wall of said sliding tube 4 is provided with sliding tube flange 4.1, and the end inwall that said body 1 is connected with sliding tube 4 is provided with step hole 1.1, and outer wall is provided with body flange 1.2; Said gland 2 includes sleeve 2.1 and is arranged at the connecting plate 2.2 on sleeve 2.1 outer walls; Said sleeve 2.1 is set on the sliding tube 4, and is positioned at the step hole 1.1 of body 1, and the cavity that said body 1, gland 2 and sleeve 2.1 constitute is filled with packing layer; Said packing layer includes high carbon fiber layer 5; High carbon fiber layer 5 is impregnated with the blending agent of lubricating grease and aquadag formation, is filled with polytetrafluoroethylene ring 6 in the said high carbon fiber layer 5, and said polytetrafluoroethylene ring 6 is impregnated with the blending agent of lubricating grease and aquadag formation; Said lubricating grease is polyurea based lubricating grease; Said polytetrafluoroethylene ring 6 is set on the sliding tube 4, and the closely contact mutually of the outer wall of the internal surface of polytetrafluoroethylene ring 6 and sliding tube 4, between said body flange 1.2 and the connecting plate 2.2 through bolt with the packing layer compacting; For further improving consolidation effect, be provided with metal gasket 7 between the step surface of said packing layer and step hole 1.1; Said body flange 1.2, connecting plate 2.2 can be connected through same bolt 3 with sliding tube flange 4.1, and said bolt 3 can play position-limiting action to the sliding distance of sliding tube 4.
Claims (7)
1. limit-type high-temperature pipe expansion bend; It is characterized in that: the body (1) that said pipeline extension device includes gland (2), sliding tube (4) and is set in sliding tube (4) two ends; The end inwall that said body (1) is connected with sliding tube (4) is provided with step hole (1.1); Said gland (2) includes sleeve (2.1); Said sleeve (2.1) is set on the sliding tube (4), and is positioned at the step hole (1.1) of body (1), and the cavity that said body (1), gland (2) and sleeve (2.1) constitute is filled with packing layer.
2. a kind of according to claim 1 limit-type high-temperature pipe expansion bend is characterized in that: be provided with metal gasket (7) between the step surface of said packing layer and step hole (1.1).
3. a kind of according to claim 1 or claim 2 limit-type high-temperature pipe expansion bend; It is characterized in that: the outer wall of said body (1) is provided with body flange (1.2); The outer wall of said sleeve (2.1) is provided with connecting plate (2.2), passes through bolt between said body flange (1.2) and the connecting plate (2.2) with the packing layer compacting.
4. like the said a kind of limit-type high-temperature pipe expansion bend of claim 3; It is characterized in that: the outer wall of said sliding tube (4) is provided with sliding tube flange (4.1), and said body flange (1.2), connecting plate (2.2) and sliding tube flange (4.1) are connected through bolt (3).
5. a kind of according to claim 1 or claim 2 limit-type high-temperature pipe expansion bend; It is characterized in that: said packing layer includes high carbon fiber layer (5); Be filled with polytetrafluoroethylene ring (6) in the said high carbon fiber layer (5); And polytetrafluoroethylene ring (6) is set on the sliding tube (4), and the internal surface of polytetrafluoroethylene ring (6) closely contacts with the outer wall of sliding tube (4) mutually.
6. like the said a kind of limit-type high-temperature pipe expansion bend of claim 3; It is characterized in that: said packing layer includes high carbon fiber layer (5); Be filled with polytetrafluoroethylene ring (6) in the said high carbon fiber layer (5); And polytetrafluoroethylene ring (6) is set on the sliding tube (4), and the internal surface of polytetrafluoroethylene ring (6) closely contacts with the outer wall of sliding tube (4) mutually.
7. like the said a kind of limit-type high-temperature pipe expansion bend of claim 4; It is characterized in that: said packing layer includes high carbon fiber layer (5); Be filled with polytetrafluoroethylene ring (6) in the said high carbon fiber layer (5); And polytetrafluoroethylene ring (6) is set on the sliding tube (4), and the internal surface of polytetrafluoroethylene ring (6) closely contacts with the outer wall of sliding tube (4) mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204607195U CN202360955U (en) | 2011-11-19 | 2011-11-19 | Limit type high-temperature pipeline expansion piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204607195U CN202360955U (en) | 2011-11-19 | 2011-11-19 | Limit type high-temperature pipeline expansion piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360955U true CN202360955U (en) | 2012-08-01 |
Family
ID=46572141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204607195U Expired - Fee Related CN202360955U (en) | 2011-11-19 | 2011-11-19 | Limit type high-temperature pipeline expansion piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371044A (en) * | 2015-12-17 | 2016-03-02 | 安徽盛运环保工程有限公司 | Large-diameter high-temperature-resistant one-way expansion joint |
| CN115289006A (en) * | 2022-08-19 | 2022-11-04 | 上海东高液压件有限公司 | Gear pump |
-
2011
- 2011-11-19 CN CN2011204607195U patent/CN202360955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371044A (en) * | 2015-12-17 | 2016-03-02 | 安徽盛运环保工程有限公司 | Large-diameter high-temperature-resistant one-way expansion joint |
| CN115289006A (en) * | 2022-08-19 | 2022-11-04 | 上海东高液压件有限公司 | Gear pump |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20161119 |