CN101105253A - Direct-buried filling sleeve compensator - Google Patents
Direct-buried filling sleeve compensator Download PDFInfo
- Publication number
- CN101105253A CN101105253A CNA2007100123444A CN200710012344A CN101105253A CN 101105253 A CN101105253 A CN 101105253A CN A2007100123444 A CNA2007100123444 A CN A2007100123444A CN 200710012344 A CN200710012344 A CN 200710012344A CN 101105253 A CN101105253 A CN 101105253A
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- sealing
- sleeve
- compensator
- direct
- stuffing box
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Abstract
A directly-buried filling sleeve compensator comprises an inner sleeve, an outer sleeve, a sealing end ring, a falling-off preventing ring, guide belt, a sealing filler and a connecting pipe. The invention is characterized in that the inner sleeve extends to the inner end of the outer sleeve and equipped with a falling-off preventing shoulder, the sealing filler is provided in a chamber composed of the inner sleeve, outer sleeve, sealing end ring and falling-off preventing ring, a flexible graphite sealant is filled in the sealing filler, and the flexible graphite sealant and sealing filler are combined to form a sealing mechanism for the compensator. The invention needs not to set a filling orifice, and the sealing filler and sealant are pressed at the beginning of assembly. The invention has the advantages of large capacity of compensation, no elastic force, good thermal expansion performance of the filling sealant, reliable seal, low operating and maintenance cost, no need of being supplemented of the sealant, improved safety and convenience, low manufacturing cost, and prolonged service life.
Description
Technical field
The present invention relates to a kind of sleeve expansion joint, but particularly a kind of direct-burried, and the direct-buried filling sleeve compensator of stuffing box packing Maintenance free is particularly useful for direct buried pipe network.
Background technique
The directly buried installation of the most of employing of heating network now, when the hot water temperature has surpassed Celsius 120 when spending, steam pipe system or hot water pipe net must adopt compensation directly buried installation mode, and the thermal compensation wide range of problem that solves the direct-burried pipe network adopts FlexbleJoint and filling sleeve compensator.The FlexbleJoint anti-chlorine ion corrosion is poor, and compensation ability is little, has problems such as elastic force.Conventional filling sleeve compensator is owing to frequent to-and-fro motion, and stuffing box packing is run off through regular meeting, needs often to fill out mouth from a plurality of uniform notes and injects filler.Safety in operation reduces greatly, and maintenance cost is very high.Because notes are filled out mouth need be easy to maintenance, can not reach direct-burried and use.And common packing-type filler sleeve expansion joint along with the increase packing wearing and tearing of number of run, reduces the Seal cage sealing load, and compensator causes leakage.
Summary of the invention
The purpose of this invention is to provide a kind of direct-buried filling sleeve compensator, need not be provided with to annotate and fill out mouth, stuffing box packing and sealing compound are to be pressed in the initial loading timing, compensation ability is big, nonelastic power annotates that to fill out the sealing compound thermal expansion properties good, and sealing is reliable, operation expense is low, notes are filled out agent and be need not to mend and fill out, and improve the Security of using, convenience, cost is low, increases the service life.
The objective of the invention is to be achieved through the following technical solutions: it comprises inner sleeve, outer sleeve, sealing end ring, anti-avulsion ring, guidance tape, stuffing box packing and adapter, it is characterized in that: the inner that inner sleeve extend in the outer sleeve is provided with the anticreep shoulder, in the cavity that inner sleeve, outer sleeve, sealing end ring and anti-avulsion ring are formed, install stuffing box packing, between stuffing box packing, annotate and fill out band pressure Expanded graphite sealing compound, the sealing mechanism of the combined formation compensator of Expanded graphite sealing compound and stuffing box packing.
Above-mentioned stuffing box packing is made up of graphite grazing packing and teflon seal filler.
The initial assembling pressure of above-mentioned Expanded graphite sealing compound is greater than 3 times of compensator interior media working pressure.
Above-mentioned sealing end ring is pressed into filler until locking, can adopt the mode of structure of screw thread precession, also can adopt pressure to be pressed into the fixing mode of structure of back welding.
Advantage of the present invention is: need not be provided with to annotate and fill out mouth, stuffing box packing and sealing compound are to be pressed in the initial loading timing, and compensation ability is big, nonelastic power, it is good that notes are filled out the sealing compound thermal expansion properties, sealing is reliable, and operation expense is low, annotates to fill out agent and need not to mend and fill out, improve the Security of using, convenience, cost is low, increases the service life.
Working principle: the present invention be by interior cover along the relative sliding motion of conduit axis direction, the hot elongation of extraction duct and cold conditions shorten, and discharge the pipeline thermal stress.Adopt to annotate and to fill out Expanded graphite sealing compound and teflon seal filler, the combined formation sealing mechanism of graphite grazing packing.Realizing slipper seal under the sealing load stably between the overcoat in making.Sealing compound is in closely packing into by pressure when product assembles between the cavity between cover and the overcoat, and the initial assembling pressure of sealing compound is greater than 3 times of compensator interior media working pressure.Because this sealing compound is a compressive state under initial assembling pressure, after work a period of time, it self can along with the variation in pressure of hyperbaric chamber from volumetric expansion, reached the state of compression seal at any time.Characteristics such as it is strong that the graphite grazing packing has sealing, and corrosion resistance is strong, but 600 ℃ of heatproofs.Polytetrafluoroethylene fiber weaving stuffing box packing have very high wear resistance and higher mechanical strength and self-lubricating property very good, friction factor is little, moment of torsion is little.Rely on guidance tape to realize the high-axiality of inside and outside cover relative movement, prevent cover in the scratch plating, make the sealing of pipeline under running state more reliable, durable.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
See Fig. 1, concrete structure of the present invention is as follows: inner sleeve 1 extend in the outer sleeve 9, and its inner is provided with anticreep shoulder, can prevent that pipeline inner sleeve 1 when shrinkage from pulling out.Its intensity can satisfy the interior pressure thrust of pipeline, both can cancel the fixed bearing of pipeline.Form a cavity between inner sleeve 1, outer sleeve 9, sealing end ring 3 and the anti-avulsion ring 8, installing graphite grazing packing 5 in cavity, installing teflon seal filler 6 between graphite grazing packing 5 is annotated between the teflon seal filler 6 and is filled out band pressure graphite flexible sealing agent 7.Be that the agent of graphite flexible sealing is in closely packing into by pressure when product assembles between the cavity between cover and the overcoat, the initial assembling pressure of graphite flexible sealing agent is greater than 3 times of compensator interior media working pressure.Graphite flexible sealing agent 7 constitutes sealing mechanism with teflon seal filler 6, graphite grazing packing 5.
The order of fitting tight mechanism is: the cavity underpart between inner sleeve of holding up 1 and outer sleeve 9 is by anti-avulsion ring 8 back covers.Graphite flexible sealing agent 7 is squeezed in the 8 top filled polytetrafluoroethylene stuffing box packing 5 and graphite grazing packing 6 of anti-avulsion ring in the cavity center portion, seal up with graphite grazing packing 6 and tetrafluoroethylene stuffing box packing on top again.Be pressed into filler until locking with lock sealing end ring 3, locking can be adopted the mode of structure of screw thread precession, also can adopt pressure to be pressed into the fixing mode of structure of back welding.Lock sealing end ring 3 is provided with dust ring 2 one, has foreign material to drop on the work of inner sleeve surface restriction compensator in the time of can preventing work.Take over outer sleeve 9 and weld together.All assembling guide sleeve between sealing end ring 3 and inner sleeve 1 outer wall and between anti-avulsion ring 8 and inner sleeve 1 outer wall.This notes are filled out type, and not have the compensator compensates ability of annotating filling perforation big, and excellent corrosion can reduce engineering cost again.
Claims (4)
1. direct-buried filling sleeve compensator, it comprises inner sleeve, outer sleeve, sealing end ring, anti-avulsion ring, guidance tape, stuffing box packing and adapter, it is characterized in that: the inner that inner sleeve extend in the outer sleeve is provided with the anticreep shoulder, in the cavity that inner sleeve, outer sleeve, sealing end ring and anti-avulsion ring are formed, install stuffing box packing, between stuffing box packing, annotate and fill out band pressure Expanded graphite sealing compound, the sealing mechanism of the combined formation compensator of Expanded graphite sealing compound and stuffing box packing.
2. direct-buried filling sleeve compensator according to claim 1 is characterized in that: stuffing box packing is made up of graphite grazing packing and teflon seal filler.
3. direct-buried filling sleeve compensator according to claim 1 is characterized in that: the initial assembling pressure of Expanded graphite sealing compound is greater than 3 times of compensator interior media working pressure.
4. direct-buried filling sleeve compensator according to claim 1 is characterized in that: the sealing end ring is pressed into filler until locking, can adopt the mode of structure of screw thread precession, also can adopt pressure to be pressed into the fixing mode of structure of back welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100123444A CN101105253A (en) | 2007-08-02 | 2007-08-02 | Direct-buried filling sleeve compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100123444A CN101105253A (en) | 2007-08-02 | 2007-08-02 | Direct-buried filling sleeve compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101105253A true CN101105253A (en) | 2008-01-16 |
Family
ID=38999276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100123444A Pending CN101105253A (en) | 2007-08-02 | 2007-08-02 | Direct-buried filling sleeve compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101105253A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330860A (en) * | 2011-07-28 | 2012-01-25 | 大连益多管道有限公司 | Sleeve compensator |
| CN102330863A (en) * | 2011-07-28 | 2012-01-25 | 大连益多管道有限公司 | Guide ring of sleeve compensator |
| CN101571221B (en) * | 2009-06-16 | 2013-05-08 | 大连益多管道有限公司 | Composite closed type sleeve compensator for steam |
| CN113389960A (en) * | 2021-06-21 | 2021-09-14 | 哈尔滨工程大学 | Underwater spiral loading movable connector |
| CN113669531A (en) * | 2021-08-26 | 2021-11-19 | 江苏亚星波纹管有限公司 | Maintenance-free omnibearing rotary compensator |
-
2007
- 2007-08-02 CN CNA2007100123444A patent/CN101105253A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571221B (en) * | 2009-06-16 | 2013-05-08 | 大连益多管道有限公司 | Composite closed type sleeve compensator for steam |
| CN102330860A (en) * | 2011-07-28 | 2012-01-25 | 大连益多管道有限公司 | Sleeve compensator |
| CN102330863A (en) * | 2011-07-28 | 2012-01-25 | 大连益多管道有限公司 | Guide ring of sleeve compensator |
| CN113389960A (en) * | 2021-06-21 | 2021-09-14 | 哈尔滨工程大学 | Underwater spiral loading movable connector |
| CN113669531A (en) * | 2021-08-26 | 2021-11-19 | 江苏亚星波纹管有限公司 | Maintenance-free omnibearing rotary compensator |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |