CN203847883U - Maintenance-free self-sealing sleeve compensator - Google Patents
Maintenance-free self-sealing sleeve compensator Download PDFInfo
- Publication number
- CN203847883U CN203847883U CN201420196060.0U CN201420196060U CN203847883U CN 203847883 U CN203847883 U CN 203847883U CN 201420196060 U CN201420196060 U CN 201420196060U CN 203847883 U CN203847883 U CN 203847883U
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- China
- Prior art keywords
- wall
- outer sleeve
- sleeve
- sealing
- flexible graphite
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Abstract
The utility model discloses a maintenance-free self-sealing sleeve compensator which comprises an outer sleeve, a core tube, flexible graphite packing, a bolt and nut assembly, a gland and a filling valve. A tube end of the gland extends into a cavity which is formed by the inner wall of the outer sleeve, the left end surface of an inner shoulder and the outer wall of the core tube, so that a sealing cavity can be formed; the filling valve is fixedly connected to the outer wall of the outer sleeve and is communicated with the sealing cavity; the flexible graphite packing is plugged in the sealing cavity; graphite sealing rings are arranged on two sides of the flexible graphite packing in the sealing cavity; the graphite sealing rings are in clearance fit with the inner wall of the outer sleeve and the outer wall of the core tube, contact surfaces of the graphite sealing rings and the flexible graphite packing are conical surfaces, and large-diameter ends of the conical surfaces face the flexible graphite packing. The maintenance-free self-sealing sleeve compensator is characterized in that elastic self-sealing structures are formed by compression springs; a right guide bushing and a left guide bushing are respectively arranged on the inner wall of the inner shoulder of the outer sleeve and the inner wall of the gland; an abrasion-resistant coating is arranged on the outer wall of the core tube. The maintenance-free self-sealing sleeve compensator has the advantages of good self-sealing performance and abrasion resistance, maintenance-free property and long service life.
Description
Technical field
The utility model relates to pipeline compensator, relates in particular to a kind of filling type sleeve compensator.
Background technique
Filling type sleeve compensator can inject sealing compound from material feeding port depended on pressure, and can after-teeming under pipe network operation state, and maintenance does not stop production.Use for many years shows, the sealability that filling type overlaps simple compensator has certain change, and maintenance workload has certain minimizing, still undesirable but existing filling type overlaps the sealability of simple compensator, need to often safeguard, adjusts sealing state.Along with the fast development of concentrated supply of heating in the city, also more and more higher to the performance requirement of sleeve expansion joint, require good seal performance, after installation and operation, do not need to safeguard.
Summary of the invention
The utility model, for the deficiencies in the prior art, proposes the non-maintaining selfsealings sleeve expansion joint that a kind of selfsealings are good.
The utility model is achieved through the following technical solutions technical goal.
Non-maintaining selfsealings sleeve expansion joint, comprises that outer sleeve, core pipe, flexible graphite packing, bolt and nut component, gland and note fill out valve; Described core tube wall right-hand member is provided with anti-decylization; Described outer sleeve inner wall middle part is provided with internal shoulder; Described outer sleeve is linked on core pipe from left to right; Described gland is set in core pipe left end outer wall, is connected with outer sleeve left end flange by bolt and nut component; Described gland pipe end stretches in the cavity of outer sleeve inner wall, internal shoulder left side, core tube wall formation, forms Seal cage; Described note is filled out valve and is fixedly connected on the outer wall of outer sleeve, communicates with Seal cage; Plug dress flexible graphite packing in described Seal cage; Its improvements are: in described Seal cage, the both sides of flexible graphite packing are provided with graphite-seal ring; Described graphite-seal ring and outer sleeve inner wall, core tube wall Spielpassung, be conical surface with the surface of contact of flexible graphite packing, and the larger diameter end of conical surface is towards flexible graphite packing.
In said structure, on the bolt between gland left side and bolt and nut component nut, be set with Compress Spring, form elasticity self sealing structure.
In said structure, described outer sleeve internal shoulder inwall is provided with right guide bush; Described gland inwall is provided with left guide bush; Described left guide bush, right guide bush endoporus and core tube wall Spielpassung.
In said structure, described core tube wall is provided with wear resistant coating.
The utility model compared with prior art, has following good effect:
1. the end face that carbon packing ring contacts with flexible graphite packing is conical surface, the larger diameter end of conical surface is towards flexible graphite packing, in compaction process, stuffing box packing is subject to axially and lateral extrusion simultaneously like this, makes stuffing box packing tightly embrace core tube wall, significantly improves sealing reliability.
2. sleeve expansion joint used after a period of time, and filler has wearing and tearing, and gland is under the effect of Compress Spring, and automatic impaction, remains sealability, without shutting down dismounting additional fillers.
3. outer sleeve internal shoulder inwall, gland inwall are provided with guide bush, lead on the one hand by front and back, have improved use stationarity; On the other hand, because the wear resistance of guide bush is better, improved the working life of compensator.
4. core tube wall is provided with wear resistant coating, has further improved the working life of compensator.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and in conjunction with the embodiments below.
Non-maintaining selfsealings sleeve expansion joint shown in accompanying drawing, comprises that outer sleeve 1, core pipe 3, flexible graphite packing 6, bolt and nut component 8, gland 9 and note fill out valve 7; Core pipe 3 outer wall right-hand members are provided with anti-decylization 2; Outer sleeve 1 inwall middle part is provided with internal shoulder 1.1, and in the present embodiment, outer sleeve 1 internal shoulder 1.1 inwalls are provided with right guide bush 11, right guide bush 11 endoporus and core pipe 3 outer wall Spielpassung; Outer sleeve 1 is linked on core pipe 3 from left to right.
Gland 9 is set in core pipe 3 left end outer walls, is connected with outer sleeve 1 left end flange by bolt and nut component 8, on the bolt between gland 9 left sides and bolt and nut component 8 nuts, is set with Compress Spring 10, forms elasticity self sealing structure.In the present embodiment, gland 9 inwalls are provided with left guide bush 4, left guide bush 4 endoporus and core pipe 3 outer wall Spielpassung.
Gland 9 pipe ends stretch in the cavity of outer sleeve 1 inwall, internal shoulder 1.1 left sides, the 3 outer walls formation of core pipe, form Seal cage; Note is filled out valve 7 and is fixedly connected on the outer wall of outer sleeve 1, communicates with Seal cage; Plug dress flexible graphite packing 6 in Seal cage; In Seal cage, the both sides of flexible graphite packing 6 are provided with graphite-seal ring 5; Graphite-seal ring 5 and outer sleeve 1 inwall, core pipe 3 outer wall Spielpassung, be conical surface with the surface of contact of flexible graphite packing 6, and the larger diameter end of conical surface is towards flexible graphite packing 6.
Core pipe 3 outer walls are provided with wear resistant coating, and in the present embodiment, wear resistant coating is pressed against layer firmly for plating.
Claims (4)
1. a non-maintaining selfsealings sleeve expansion joint, comprises that outer sleeve (1), core pipe (3), flexible graphite packing (6), bolt and nut component (8), gland (9) and note fill out valve (7); Described core pipe (3) outer wall right-hand member is provided with anti-decylization (2); Described outer sleeve (1) inwall middle part is provided with internal shoulder (1.1); Described outer sleeve (1) is linked on core pipe (3) from left to right; Described gland (9) is set in core pipe (3) left end outer wall, is connected with outer sleeve (1) left end flange by bolt and nut component (8); Described gland (9) pipe end stretches in the cavity of outer sleeve (1) inwall, internal shoulder (1.1) left side, the formation of core pipe (3) outer wall, forms Seal cage; Described note is filled out valve (7) and is fixedly connected on the outer wall of outer sleeve (1), communicates with Seal cage; Plug dress flexible graphite packing (6) in described Seal cage; It is characterized in that: in described Seal cage, the both sides of flexible graphite packing (6) are provided with graphite-seal ring (5); Described graphite-seal ring (5) and outer sleeve (1) inwall, core pipe (3) outer wall Spielpassung, be conical surface with the surface of contact of flexible graphite packing (6), and the larger diameter end of conical surface is towards flexible graphite packing (6).
2. non-maintaining selfsealings sleeve expansion joint according to claim 1, is characterized in that: on the bolt between gland (9) left side and bolt and nut component (8) nut, be set with Compress Spring (10), form elasticity self sealing structure.
3. non-maintaining selfsealings sleeve expansion joint according to claim 1 and 2, is characterized in that: described outer sleeve (1) internal shoulder (1.1) inwall is provided with right guide bush (11); Described gland (9) inwall is provided with left guide bush (4); Described left guide bush (4), right guide bush (11) endoporus and core pipe (3) outer wall Spielpassung.
4. non-maintaining selfsealings sleeve expansion joint according to claim 3, is characterized in that: described core pipe (3) outer wall is provided with wear resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196060.0U CN203847883U (en) | 2014-04-22 | 2014-04-22 | Maintenance-free self-sealing sleeve compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196060.0U CN203847883U (en) | 2014-04-22 | 2014-04-22 | Maintenance-free self-sealing sleeve compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847883U true CN203847883U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420196060.0U Expired - Fee Related CN203847883U (en) | 2014-04-22 | 2014-04-22 | Maintenance-free self-sealing sleeve compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847883U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122655A (en) * | 2016-08-30 | 2016-11-16 | 洛阳双瑞特种装备有限公司 | A kind of air sac sealing sleeve expansion joint |
| CN106678476A (en) * | 2017-02-20 | 2017-05-17 | 江苏丰禾机械制造股份有限公司 | Sleeve-type dynamic seal compensator |
| CN107781563A (en) * | 2016-08-31 | 2018-03-09 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of external pressure straight pipe pressure-equalizing |
| CN107795786A (en) * | 2016-08-31 | 2018-03-13 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of on-line monitoring external pressure straight pipe pressure-equalizing |
| CN110594501A (en) * | 2019-09-23 | 2019-12-20 | 宁波天生密封件有限公司 | Thread clamping and pressing type pipe fitting structure and using method thereof |
| CN114320997A (en) * | 2021-12-31 | 2022-04-12 | 石家庄强大泵业集团有限责任公司 | Leakage-free pump shaft sealing structure |
-
2014
- 2014-04-22 CN CN201420196060.0U patent/CN203847883U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122655A (en) * | 2016-08-30 | 2016-11-16 | 洛阳双瑞特种装备有限公司 | A kind of air sac sealing sleeve expansion joint |
| CN107781563A (en) * | 2016-08-31 | 2018-03-09 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of external pressure straight pipe pressure-equalizing |
| CN107795786A (en) * | 2016-08-31 | 2018-03-13 | 吉慧萍 | The non-maintaining self- steering sealed expansion joint of on-line monitoring external pressure straight pipe pressure-equalizing |
| CN106678476A (en) * | 2017-02-20 | 2017-05-17 | 江苏丰禾机械制造股份有限公司 | Sleeve-type dynamic seal compensator |
| CN110594501A (en) * | 2019-09-23 | 2019-12-20 | 宁波天生密封件有限公司 | Thread clamping and pressing type pipe fitting structure and using method thereof |
| CN114320997A (en) * | 2021-12-31 | 2022-04-12 | 石家庄强大泵业集团有限责任公司 | Leakage-free pump shaft sealing structure |
| CN114320997B (en) * | 2021-12-31 | 2023-07-21 | 石家庄强大泵业集团有限责任公司 | Pump shaft sealing structure without leakage |
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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: 20140924 Termination date: 20180422 |