CN204717214U - The reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer - Google Patents
The reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer Download PDFInfo
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- CN204717214U CN204717214U CN201520135284.5U CN201520135284U CN204717214U CN 204717214 U CN204717214 U CN 204717214U CN 201520135284 U CN201520135284 U CN 201520135284U CN 204717214 U CN204717214 U CN 204717214U
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Abstract
The utility model relates to a kind of sleeve expansion joint, the reducible multi-sealed sleeve expansion joint of especially a kind of thermal insulation layer.This sleeve expansion joint comprises core pipe, one end of described core pipe and the socket joint groove of bell-and-spigot pipe opposite end seal grafting, the cylindrical that described bell-and-spigot pipe has socket joint groove one end is connected the bell-and-spigot pipe gland of link spring shape, described core tube wall is connected the core pipe gland of link spring shape and reset ring flat-plate, described reset ring flat-plate is between bell-and-spigot pipe gland and core pipe gland, be connected by screw rod between described bell-and-spigot pipe gland with core pipe gland, described core pipe gland is connected with the ring flat-plate of kink outside core pipe by spring, filling heat insulating wall between described ring flat-plate and described reset ring flat-plate, described reset ring flat-plate is connected by the baffle ring of seal bellows with next-door neighbour's bell-and-spigot pipe gland.Adopt this structure effectively can prevent dielectric leakage, and improve insulating efficiency.
Description
Technical field
The utility model relates to a kind of sleeve expansion joint, the reducible multi-sealed sleeve expansion joint of especially a kind of thermal insulation layer.
Background technique
At present, sleeve expansion joint adopts material filling type sealing, seal form is single, filler easily weares and teares, and causes heating medium to occur leaking, directly affects product large-scale application, and existing sleeve expansion joint many employings outer wrapping formula insulation, outside environmental elements is comparatively large on thermal insulation layer impact, to this, there is no good solution at present.Find through retrieval, existing sleeve expansion joint (the patent No.: 201020275186.9) adopt graphite packing as main seal form, in short time, sealing effect is good, but in the process of Long-Time Service, the filler wearing and tearing caused due to axially reciprocating cannot be repaired, and sealability reduces greatly.The sleeve expansion joint prefabricated thermal insulation device (patent No.: the built-in heat insulation Rotating fields 201320752808.6) adopting band oversheath, to a certain degree decrease the energy loss of heating medium, but thermal insulation layer core pipe after thermal expansion produces axial displacement, displacement causes thermal insulation layer to be squeezed, after extruding force disappears, thermal insulation layer is difficult to recover original shape, because it does not have reset capability, thermal insulation layer part vacancy can be caused, increase the energy consumption of heating medium conveying.Therefore, be necessary to improve its structure, to meet the user demand of heating medium conveyance conduit.
Model utility content
Technical problem to be solved in the utility model is, overcome the drawback of prior art, there is provided a kind of thermal insulation layer reducible multi-sealed sleeve expansion joint, sealing protection is better, adopts built-in thermal insulation layer simultaneously, avoids thermal insulation layer to be subject to external environment impact, adopting on the other hand can resetting structure, achieve thermal insulation layer and can change its length with flexible change of core pipe, ensure that insulation useful area to greatest extent, decrease the energy loss of heating medium conveying.
In order to reach above object, the technical solution of the utility model is as follows: the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer, comprise core pipe, one end of described core pipe and the socket joint groove of bell-and-spigot pipe opposite end seal grafting, the cylindrical that described bell-and-spigot pipe has socket joint groove one end is connected the bell-and-spigot pipe gland of link spring shape, described core tube wall is connected the core pipe gland of link spring shape and reset ring flat-plate, described reset ring flat-plate is between bell-and-spigot pipe gland and core pipe gland, be connected by screw rod between described bell-and-spigot pipe gland with core pipe gland, it is characterized in that: described core pipe gland is connected with the ring flat-plate of kink outside core pipe by spring, filling heat insulating wall between described ring flat-plate and described reset ring flat-plate, described reset ring flat-plate is connected by the baffle ring of seal bellows with next-door neighbour's bell-and-spigot pipe gland.
Further, described core pipe and socket joint groove are by least one group of seal ring interference fit, and described one group of seal ring is be filled in the seal ring of core inner tube wall groove and be filled in the combination of seal ring of core tube wall groove.
Further, described thermal insulation layer and seal bellows are covered by oversheath, and described oversheath one end and baffle ring are connected, and one end is connected with ring flat-plate.
Further, described ring flat-plate and thermal insulation layer gluing, its excircle place is fixedly connected with screw rod.
Further, described seal ring is made up of non-metallic elastic material and flexible graphite packing.
Further, described reset ring flat-plate is distributed with some clamp devices towards the side of thermal insulation layer.
Compared with prior art, the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer of the utility model, has the following advantages: one, adopt multi-sealing structure, change the seal form that sleeve expansion joint is in the past single; Adopt the form of sealing grafting, utilize the resilience of resilient nonmetallic material to carry out radial compaction to flexible graphite packing, ensure that the reliability of sealing, the sealability of the Seal cage simultaneously utilizing seal bellows to form to compensator is supplemented.Two, insulation resetting-mechanism is adopted; changing sleeve expansion joint in the past relies on heat-preservation cotton outer layer covers to carry out the form be incubated; total closed type oversheath is adopted to protect thermal insulation layer; the thermal insulation layer failure conditions caused because of extraneous factor having stopped that external insulation in the past exists, reset ring flat-plate utilizes clamp device circumferentially to carry out Compression and Expansion reset to thermal insulation layer.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment one structural representation;
Fig. 2 is the utility model embodiment one overall structure schematic diagram;
Fig. 3 is the combined seal ring structural representation of the utility model embodiment one;
Fig. 4 is the clamp device structural representation on the reset ring flat-plate of the utility model embodiment one;
Fig. 5 is the clamp device distribution schematic diagram of the utility model embodiment one.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As depicted in figs. 1 and 2, the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer, comprises core pipe 1, and one end of core pipe 1 and the socket joint groove 18 of bell-and-spigot pipe 2 opposite end seal grafting, and the two is by least one group of seal ring interference fit.The cylindrical that bell-and-spigot pipe 2 has socket joint groove 18 one end is connected the bell-and-spigot pipe gland 4 of link spring shape, and core pipe 1 outer wall is connected the core pipe gland 3 of link spring shape, is connected therebetween by nut 5 with screw rod 6.Reset ring flat-plate 8 is between bell-and-spigot pipe gland 4 and core pipe gland 3, and the outer wall of its inner circle and core pipe 1 is connected.Core pipe gland 3 is connected with the ring flat-plate 9 of kink outside core pipe 1 by spring 14, filling heat insulating wall 12 between ring flat-plate 9 and reset ring flat-plate 8, and reset ring flat-plate 8 is connected by the baffle ring 7 of seal bellows 11 with next-door neighbour's bell-and-spigot pipe gland 4.Thermal insulation layer 12 and seal bellows 11 are covered by oversheath 10, and oversheath 10 one end and baffle ring 7 are connected, and one end is connected with ring flat-plate 9.Ring flat-plate 9 and thermal insulation layer gluing, its excircle place is fixedly connected with screw rod 6.
As shown in Figure 3, one group of seal ring is be filled in the seal ring of core inner tube wall groove 16 and be filled in the combination of seal ring of core tube wall groove 15.Seal ring 13 is made up of rubber ring and flexible graphite packing.
As shown in Figure 4 and Figure 5, reset ring flat-plate 8, towards side uniform intervals 90 degree of distribution four stack clamping devices 17 of thermal insulation layer, often organizes two.This device is a Y type pawl, fixes self-locking bolt between two pawls.
Thermal expansion of pipeline during work, there is relative movement in core pipe 1 and bell-and-spigot pipe 2, the first that the two seals circle 13 that core pipe 1 is arranged utilizes the radial compacting force of rubber ring to Expanded graphite to realize core pipe 1 and bell-and-spigot pipe 2 seals, if when first sealing was lost efficacy, medium can enter in Seal cage 19 along socket joint groove 18, realize second sealing, fully can ensure the sealability of sleeve expansion joint.Operationally thermal expansion of pipeline, reset ring flat-plate 8 is driven when core pipe 1 moves, reset ring flat-plate 8 utilizes Y type clamp device to pull thermal insulation layer 12 to move together along with core pipe 1, thermal insulation layer 12 effectively can cover working cell, thermal insulation layer 12 is built between reset ring flat-plate 8 and ring flat-plate 9, its outer covering oversheath 10, forms the thermal insulation layer of sealed mode, the impact that can effectively prevent outside environmental elements from causing between four.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. the reducible multi-sealed sleeve expansion joint of thermal insulation layer, comprise core pipe (1), one end of described core pipe and the socket joint groove (18) of bell-and-spigot pipe (2) opposite end seal grafting, the cylindrical that described bell-and-spigot pipe (2) has socket joint groove (18) one end is connected the bell-and-spigot pipe gland (4) of link spring shape, described core tube wall is connected the core pipe gland (3) of link spring shape and reset ring flat-plate (8), described reset ring flat-plate is between bell-and-spigot pipe gland and core pipe gland, described bell-and-spigot pipe gland (4) is connected by screw rod (6) with between core pipe gland (3), it is characterized in that: described core pipe gland is connected with the ring flat-plate of kink outside core pipe (9) by spring (14), filling heat insulating wall (12) between described ring flat-plate and described reset ring flat-plate, described reset ring flat-plate is connected by the baffle ring (7) of seal bellows (11) with next-door neighbour's bell-and-spigot pipe gland.
2. the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer according to claim 1, it is characterized in that: described core pipe (1) and socket joint groove (18) are by least one group of seal ring interference fit, and described one group of seal ring is for being filled in the seal ring of core inner tube wall groove (16) and being filled in the combination of seal ring of core tube wall groove (15).
3. the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer according to claim 1, it is characterized in that: described thermal insulation layer (12) and seal bellows (11) are covered by oversheath (10), described oversheath one end and baffle ring (7) are connected, and one end is connected with ring flat-plate (9).
4. the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer according to claim 1, is characterized in that: described ring flat-plate (9) and thermal insulation layer gluing, its excircle place is fixedly connected with screw rod (6).
5. the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer according to claim 2, is characterized in that: described seal ring (13) is made up of non-metallic elastic material and flexible graphite packing.
6. the reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer according to claim 1, is characterized in that: described reset ring flat-plate (8) is distributed with some clamp devices (17) towards the side of thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135284.5U CN204717214U (en) | 2015-03-10 | 2015-03-10 | The reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135284.5U CN204717214U (en) | 2015-03-10 | 2015-03-10 | The reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer |
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| Publication Number | Publication Date |
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| CN204717214U true CN204717214U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520135284.5U Active CN204717214U (en) | 2015-03-10 | 2015-03-10 | The reducible multi-sealed sleeve expansion joint of a kind of thermal insulation layer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764177A (en) * | 2017-01-16 | 2017-05-31 | 江苏宏博机械制造有限公司 | Direct insertion fast connecting joint for pipe |
| CN111594678A (en) * | 2020-06-16 | 2020-08-28 | 江苏贝特管件有限公司 | End face sealing structure for rotary compensator and rotary compensator |
-
2015
- 2015-03-10 CN CN201520135284.5U patent/CN204717214U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106764177A (en) * | 2017-01-16 | 2017-05-31 | 江苏宏博机械制造有限公司 | Direct insertion fast connecting joint for pipe |
| CN111594678A (en) * | 2020-06-16 | 2020-08-28 | 江苏贝特管件有限公司 | End face sealing structure for rotary compensator and rotary compensator |
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| GR01 | Patent grant |