CN212171069U - Prefabricated insulating tube foaming technology end shutoff structure - Google Patents
Prefabricated insulating tube foaming technology end shutoff structure Download PDFInfo
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- CN212171069U CN212171069U CN202020431646.6U CN202020431646U CN212171069U CN 212171069 U CN212171069 U CN 212171069U CN 202020431646 U CN202020431646 U CN 202020431646U CN 212171069 U CN212171069 U CN 212171069U
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Abstract
A prefabricated heat preservation pipe foaming process end plugging structure comprises an annular plug and a sealing rubber ring; the annular plug is made of metal, the inner diameter of the annular plug is not smaller than the outer diameter of the steel pipe in the heat-insulating pipe, an annular groove is formed in the inner wall of the annular plug, the annular groove is a wedge-shaped groove with a large bottom and a small opening, and an air inflation hole communicated with the wedge-shaped groove is formed in the outer end face of the annular plug; the sealing rubber ring is sleeved in the wedge-shaped groove of the annular plug. The utility model discloses a to the sealed effect at work piece both ends, reached and avoided the foaming raw materials to leak, reduce the purpose of sequent arrangement work load.
Description
Technical Field
The utility model relates to a heat preservation pipe block structure, especially a work piece end block structure suitable for prefabricated heat preservation pipe foaming process.
Background
The prefabricated heat-insulating pipe consists of an inner steel pipe for conveying a medium, an outer sleeve and a polyurethane heat-insulating layer filled between the inner steel pipe and the outer sleeve, wherein the heat-insulating layer is tightly bonded with the inner steel pipe and the outer sleeve by adopting a foaming process.
In polyurethane heat preservation foaming in-process, spill over from both ends in order to prevent the foaming raw materials, need carry out the shutoff to the work piece both ends, among the prior art, to insulating tube work piece both ends shutoff problem, generally adopt sticky tape winding mode, because its sealing performance is relatively poor, flexible material's sticky tape has flexible deformation problem simultaneously, not only is difficult to avoid foaming raw materials to leak the problem, but also can cause polyurethane foaming layer tip bulge phenomenon, has increased the work load of sequent arrangement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prefabricated insulating tube foaming technology end block structure aims at realizing the sealed to the work piece both ends through this block structure, reaches the purpose of avoiding the foaming raw materials to leak, reducing sequent arrangement work load.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a prefabricated heat preservation pipe foaming process end plugging structure comprises an annular plug and a sealing rubber ring; the annular plug is made of metal, the inner diameter of the annular plug is not smaller than the outer diameter of the steel pipe in the heat-insulating pipe, an annular groove is formed in the inner wall of the annular plug, the annular groove is a wedge-shaped groove with a large bottom and a small opening, and an air inflation hole communicated with the wedge-shaped groove is formed in the outer end face of the annular plug; the sealing rubber ring is sleeved in the wedge-shaped groove of the annular plug.
According to the prefabricated heat-insulating pipe foaming process end plugging structure, the cross section of the sealing rubber ring is circular.
According to the prefabricated heat-insulating pipe foaming process end socket plugging structure, the inner end face of the annular plug is provided with the annular boss, and the outer diameter size of the annular boss is matched with the inner diameter size of the outer sleeve of the prefabricated heat-insulating pipe.
The prefabricated heat preservation pipe foaming process end plugging structure is further provided with a plug for plugging the inflation hole, and the plug is made of rubber materials.
The utility model provides a prefabricated insulating tube foaming technology end plugging structure, it has set up the annular groove of wedge groove section structure on the inner wall of annular end cap, and suit the sealing rubber ring in the annular groove, still set up the gas charging hole that communicates the annular groove on the outer terminal surface of annular end cap simultaneously, therefore in prefabricated insulating tube foaming process, can install the annular end cap at the work piece both ends, inject compressed air into the annular groove through the gas charging hole, the sealing rubber ring moves to the wedge groove open end under the compressed air thrust effect, through the elastic deformation of sealing rubber ring the gap seal between annular end cap and the steel pipe in the insulating tube; the utility model discloses still be equipped with the annular boss that external diameter and prefabricated insulating tube's outer tube internal diameter matched at the terminal surface in cyclic annular end cap, the location of insulating tube is realized with the cooperation of insulating tube outer tube to the cyclic annular boss of accessible, further guarantees the sealed effect of cyclic annular end cap. Therefore, the utility model discloses a to the sealed effect at work piece both ends, reached and avoided the foaming raw materials to leak, reduced the purpose of sequent arrangement work load.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is an enlarged view of the structure at I in FIG. 1;
FIG. 3 is a schematic view of an inflation process;
FIG. 4 is a schematic view of the working state of the present invention;
fig. 5 is an enlarged view of the structure at ii in fig. 4.
The list of labels in the figure is:
1. 1-1 parts of annular plugs, 1-2 parts of annular grooves, 1-3 parts of inflation holes and annular bosses;
2. sealing the rubber ring;
3. plugging;
4. an inner steel tube;
5. a heat-insulating layer;
6. an outer sleeve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, the utility model provides a prefabricated thermal insulation pipe foaming process end plugging structure, which comprises an annular plug 1 and a sealing rubber ring 2; the annular plug 1 is made of metal, the inner diameter of the annular plug is not smaller than (preferably slightly larger than) the outer diameter of an inner steel tube 4 of the heat preservation tube, an annular groove 1-1 is formed in the inner wall of the annular plug 1, the annular groove 1-1 is a wedge-shaped groove with a large bottom and a small opening, an inflation hole 1-2 communicated with the wedge-shaped groove is formed in the outer end face of the annular plug 1, an annular boss 1-3 is arranged on the inner end face of the annular plug 1, and the outer diameter of the annular boss 1-3 is matched with the inner diameter of an outer sleeve 6 of the prefabricated heat preservation tube; the sealing rubber ring 2 is preferably a rubber ring with a circular cross section, and the sealing rubber ring 2 is sleeved in the wedge-shaped groove of the annular plug 1.
Referring to fig. 4 and 5, the end plugging structure of the prefabricated thermal insulation pipe foaming process of the present invention can install the annular plugs 1 at both ends of the workpiece in the foaming and forming process of the thermal insulation layer 2 of the prefabricated thermal insulation pipe, and realize the positioning of the thermal insulation pipe by the cooperation of the annular bosses 1-3 and the outer sleeve 6 of the thermal insulation pipe; then, compressed air is injected into the annular groove 1-1 through the air inflation hole 1-2, the sealing rubber ring 2 moves towards the opening end of the wedge-shaped groove under the thrust action of the compressed air, and a gap between the annular plug 1 and the steel pipe 4 in the heat preservation pipe is sealed through elastic deformation of the sealing rubber ring 2.
Claims (4)
1. A prefabricated heat preservation pipe foaming process end plugging structure is characterized by comprising an annular plug (1) and a sealing rubber ring (2); the annular plug (1) is made of metal, the inner diameter of the annular plug is not smaller than the outer diameter of an inner steel pipe (4) of the heat preservation pipe, an annular groove (1-1) is formed in the inner wall of the annular plug, the annular groove (1-1) is a wedge-shaped groove with a large bottom and a small opening, and an air inflation hole (1-2) communicated with the wedge-shaped groove is formed in the outer end face of the annular plug (1); the sealing rubber ring (2) is sleeved in the wedge-shaped groove of the annular plug (1).
2. The end plugging structure for the foaming process of the prefabricated heat preservation pipe as claimed in claim 1, wherein the cross section of the sealing rubber ring (2) is circular.
3. The end plugging structure for the foaming process of the prefabricated heat-insulating pipe as claimed in claim 1 or 2, wherein an annular boss (1-3) is arranged on the inner end face of the annular plug (1), and the outer diameter of the annular boss (1-3) is matched with the inner diameter of an outer sleeve (6) of the prefabricated heat-insulating pipe.
4. The prefabricated heat-insulating pipe foaming process end plugging structure is characterized by further comprising a plug (3) for plugging an inflation hole (1-2), wherein the plug (3) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020431646.6U CN212171069U (en) | 2020-03-30 | 2020-03-30 | Prefabricated insulating tube foaming technology end shutoff structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020431646.6U CN212171069U (en) | 2020-03-30 | 2020-03-30 | Prefabricated insulating tube foaming technology end shutoff structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212171069U true CN212171069U (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020431646.6U Active CN212171069U (en) | 2020-03-30 | 2020-03-30 | Prefabricated insulating tube foaming technology end shutoff structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN212171069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827336A (en) * | 2021-10-26 | 2021-12-24 | 苏州海宇新辰医疗科技有限公司 | Freezing sacculus pipe |
-
2020
- 2020-03-30 CN CN202020431646.6U patent/CN212171069U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827336A (en) * | 2021-10-26 | 2021-12-24 | 苏州海宇新辰医疗科技有限公司 | Freezing sacculus pipe |
| CN113827336B (en) * | 2021-10-26 | 2023-09-01 | 苏州海宇新辰医疗科技有限公司 | Freezing sacculus pipe |
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