CN204962170U - Preset direct -burried insulating tube connecting pipe - Google Patents
Preset direct -burried insulating tube connecting pipe Download PDFInfo
- Publication number
- CN204962170U CN204962170U CN201520575207.1U CN201520575207U CN204962170U CN 204962170 U CN204962170 U CN 204962170U CN 201520575207 U CN201520575207 U CN 201520575207U CN 204962170 U CN204962170 U CN 204962170U
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- steel pipe
- pipe
- thermal insulation
- connecting tube
- outer sleeve
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Abstract
The utility model relates to a thermal insulation pipe technical field especially wades a preset direct -burried insulating tube connecting pipe, including the connecting pipe body, the connecting pipe body mainly comprises outer tube, interior steel pipe, be equipped with the polyurethane foam layer between outer tube and the interior steel pipe, the length at interior steel pipe both ends is greater than the length of outer tube, the polyurethane foam layer with be equipped with the slot between the interior steel pipe, it annotates the hole to be equipped with the foaming between outer tube and the polyurethane foam layer, the foaming is annotated hole one end and is extended to polyurethane foam layer side, other end setting is in the surface of outer tube. The utility model discloses change the connected mode of two traditional insulating tubes, this device is want when a joint, can connect two insulating tubes through this connecting pipe, and the connecting pipe can form an organic whole with two insulating tubes, can not warp owing to inside high temperature to effectually prevent that two insulating tube hookup location are too early ageing, improved hot oil line's life.
Description
Technical field
The utility model relates to heat-insulating pipe technical field, particularly relates to a kind of preset direct-buried insulated pipe connecting tube.
Background technique
Prefabricated direct-buried heat insulation pipe is mainly used in district heating outer net pipeline, and along with country is to the popularization of central heat supply, its consumption is increasing, and using scope is also more and more wider.Prefabricated direct-buried thermal insulation pipe road has the plurality of advantages such as waterproof, antiseptic property is good, investment reduction, shortening construction period, maintenance expenses are low.And the prefabricated direct-buried pipe used at present is by steel pipe, anticorrosive coat, support, outer sleeve forms, temperature because of hot water in steel pipe or steam in heat supplying process is very high, due to anticorrosive coat, support, the expansion coefficient of steel pipe is different, link position between two thermal insulation pipes must be caused to expand, due in conventional art, all weld after directly docking between two thermal insulation pipes, after temperature is very high, just easily cause the thermal insulation layer in two thermal insulation pipe link positions, support is subjected to displacement, and then cause the link position heat insulation effect of two thermal insulation pipes poor, long-time water can enter into thermal insulation layer by joint, cause whole thermal insulation pipe ineffective, too early is aging, working life reduces.
Model utility content
The purpose of this utility model is the deficiency overcoming above-mentioned technology, and provides a kind of preset direct-buried insulated pipe connecting tube, prevents joint premature aging between two thermal insulation pipes.
The utility model for achieving the above object, by the following technical solutions: a kind of preset direct-buried insulated pipe connecting tube, it is characterized in that: comprise connecting tube body, described connecting tube body is primarily of outer sleeve, interior steel pipe is formed, polyurethane foaming layer is provided with between described outer sleeve and interior steel pipe, the length at described interior steel pipe two ends is greater than the length of described outer sleeve, the external diameter of described interior steel pipe is less than the internal diameter of steel pipe in preset direct-buried insulated pipe, slot is provided with between described polyurethane foaming layer and described interior steel pipe, the length of described slot is identical with the steel pipe length exposed in preset direct-buried insulated pipe, foaming orifice is provided with between described outer sleeve and polyurethane foaming layer, described foaming orifice one end extends to described polyurethane foaming layer side, the other end is arranged on the surface of described outer sleeve.The utility model structure is simple, change the Placement of two traditional thermal insulation pipes, this device is want when a joint, can be connected two thermal insulation pipes by this connecting tube, connecting tube can form one with two thermal insulation pipes, can not be too high and be out of shape due to inside temperature, thus effectively prevent too early aging of two thermal insulation pipe link positions, improve the working life of insulation pipe.During use, the front end of two thermal insulation pipes is inserted in slot respectively, the steel pipe of connecting tube is inserted into the inside of thermal insulation pipe, weld between two steel pipes again, again by foaming orifice after welding, inject stabilizer between thermal insulation pipe and connecting tube, liquid stabilizer enters between thermal insulation pipe and connecting tube and foams, make the two link together closely, effect and the thermal insulation pipe of formation are about the same.
The two ends of described outer sleeve are provided with annular stop block.Can be fixed the outer sleeve of the outer sleeve of connecting tube and thermal insulation pipe by annular stop block, finally carry out between playing glue sealing.
Retaining ring is provided with in the middle part of described outer sleeve.Outer sleeve can be fixed by retaining ring, prevent outer sleeve to be out of shape.
The beneficial effects of the utility model are: the utility model structure is simple, change the Placement of two traditional thermal insulation pipes, this device is want when a joint, can be connected two thermal insulation pipes by this connecting tube, connecting tube can form one with two thermal insulation pipes, can not be too high and be out of shape due to inside temperature, thus effectively prevent too early aging of two thermal insulation pipe link positions, improve the working life of insulation pipe.During use, the front end of two thermal insulation pipes is inserted in slot respectively, the steel pipe of connecting tube is inserted into the inside of thermal insulation pipe, weld between two steel pipes again, again by foaming orifice after welding, inject stabilizer between thermal insulation pipe and connecting tube, liquid stabilizer enters between thermal insulation pipe and connecting tube and foams, make the two link together closely, effect and the thermal insulation pipe of formation are about the same.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is using state schematic diagram of the present utility model.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing and preferred embodiment.As depicted in figs. 1 and 2, a kind of preset direct-buried insulated pipe connecting tube, comprise connecting tube body, described connecting tube body is primarily of outer sleeve 1, interior steel pipe 2 is formed, polyurethane foaming layer 3 is provided with between described outer sleeve and interior steel pipe, the length at described interior steel pipe two ends is greater than the length of described outer sleeve, the external diameter of described interior steel pipe is less than the internal diameter of steel pipe in preset direct-buried insulated pipe, slot 4 is provided with between described polyurethane foaming layer and described interior steel pipe, the length of described slot is identical with the steel pipe length exposed in preset direct-buried insulated pipe, the orifice 5 that foams is provided with between described outer sleeve and polyurethane foaming layer, described foaming orifice one end extends to described polyurethane foaming layer side, the other end is arranged on the surface of described outer sleeve.The utility model structure is simple, change the Placement of two traditional thermal insulation pipes, this device is want when a joint, can be connected two thermal insulation pipes by this connecting tube, connecting tube can form one with two thermal insulation pipes, can not be too high and be out of shape due to inside temperature, thus effectively prevent too early aging of two thermal insulation pipe link positions, improve the working life of insulation pipe.During use, the front end of two thermal insulation pipes is inserted in slot respectively, the steel pipe of connecting tube is inserted into the inside of thermal insulation pipe, weld between two steel pipes again, again by foaming orifice after welding, inject stabilizer between thermal insulation pipe and connecting tube, liquid stabilizer enters between thermal insulation pipe and connecting tube and foams, make the two link together closely, effect and the thermal insulation pipe of formation are about the same.
The two ends of described outer sleeve are provided with annular stop block 6.Can be fixed the outer sleeve of the outer sleeve of connecting tube and thermal insulation pipe by annular stop block, finally carry out between playing glue sealing.Retaining ring 7 is provided with in the middle part of described outer sleeve.Outer sleeve can be fixed by retaining ring, prevent outer sleeve to be out of shape.
In order to strengthen the anti-corrosion capacity of thermal insulation pipe further, prevent liquid from entering the internal structure of connecting tube from the joint of connecting tube, scribble preventing rubber layer at the two ends of connecting tube, the thickness of protective coating is at 1-5mm.The Rotating fields all by connecting tube all carries out bonding protection, substantially increases the working life of thermal insulation pipe.
The utility model structure is simple, change the Placement of two traditional thermal insulation pipes, this device is want when a joint, can be connected two thermal insulation pipes by this connecting tube, connecting tube can form one with two thermal insulation pipes, can not be too high and be out of shape due to inside temperature, thus effectively prevent too early aging of two thermal insulation pipe link positions, improve the working life of insulation pipe.During use, the front end of two thermal insulation pipes is inserted in slot respectively, the steel pipe of connecting tube is inserted into the inside of thermal insulation pipe, weld between two steel pipes again, again by foaming orifice after welding, inject stabilizer between thermal insulation pipe and connecting tube, liquid stabilizer enters between thermal insulation pipe and connecting tube and foams, make the two link together closely, effect and the thermal insulation pipe of formation are about the same.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a preset direct-buried insulated pipe connecting tube, it is characterized in that: comprise connecting tube body, described connecting tube body is primarily of outer sleeve, interior steel pipe is formed, polyurethane foaming layer is provided with between described outer sleeve and interior steel pipe, the length at described interior steel pipe two ends is greater than the length of described outer sleeve, the external diameter of described interior steel pipe is less than the internal diameter of steel pipe in preset direct-buried insulated pipe, slot is provided with between described polyurethane foaming layer and described interior steel pipe, the length of described slot is identical with the steel pipe length exposed in preset direct-buried insulated pipe, foaming orifice is provided with between described outer sleeve and polyurethane foaming layer, described foaming orifice one end extends to described polyurethane foaming layer side, the other end is arranged on the surface of described outer sleeve.
2. preset direct-buried insulated pipe connecting tube according to claim 1, is characterized in that: the two ends of described outer sleeve are provided with annular stop block.
3. preset direct-buried insulated pipe connecting tube according to claim 1, is characterized in that: be provided with retaining ring in the middle part of described outer sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520575207.1U CN204962170U (en) | 2015-07-31 | 2015-07-31 | Preset direct -burried insulating tube connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520575207.1U CN204962170U (en) | 2015-07-31 | 2015-07-31 | Preset direct -burried insulating tube connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204962170U true CN204962170U (en) | 2016-01-13 |
Family
ID=55057238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520575207.1U Active CN204962170U (en) | 2015-07-31 | 2015-07-31 | Preset direct -burried insulating tube connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204962170U (en) |
-
2015
- 2015-07-31 CN CN201520575207.1U patent/CN204962170U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |