CN216045937U - Tightening device for joint coating of directly-buried thermal insulation pipe - Google Patents
Tightening device for joint coating of directly-buried thermal insulation pipe Download PDFInfo
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- CN216045937U CN216045937U CN202122311270.2U CN202122311270U CN216045937U CN 216045937 U CN216045937 U CN 216045937U CN 202122311270 U CN202122311270 U CN 202122311270U CN 216045937 U CN216045937 U CN 216045937U
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Abstract
The utility model provides a shrinking device for repairing a mouth of a directly-buried heat-insulating pipe, which comprises at least two hoops and a locking bolt, wherein each hoop is composed of an arc-shaped plate with the angle less than 180 degrees and lug plates respectively arranged at two ends of the arc-shaped plate, and a positioning plate is arranged on one side, positioned at an opening of the arc-shaped plate, of each lug plate; a positioning block is arranged in the middle of the locking bolt; the positioning block is provided with a jackscrew perpendicular to the locking bolt, the other end of the jackscrew is a working end, one side of the working end is provided with a pressing block, and the pressing block is used for filling a gap between adjacent ear plates and pressing the circumference surrounded by the hoop. The utility model adopts the hoops to shrink the caliber of the short sleeve, the gap between the adjacent hoops is compressed by the pressing block and the cushion block, so that the long-acting sealing between the short sleeve and the outer protecting pipe can be ensured, after the short sleeve is buried, the gap between the short sleeve and the outer protecting pipe is not cracked, the hole is not easy to appear, the construction is simple and easy, the cost is low, and the construction quality can be greatly improved.
Description
Technical Field
The utility model relates to a construction technology of a direct-buried heat-insulating pipe, in particular to a shrinking device for repairing a joint of the direct-buried heat-insulating pipe.
Background
The direct-buried heat-insulating pipe consists of an internal working steel pipe, a middle polyurethane heat-insulating layer and an outer polyethylene protective pipe. The direct-buried heat-insulating pipes are generally prefabricated in factories, the length of the direct-buried heat-insulating pipes is 12 meters, the direct-buried heat-insulating pipes need to be placed in a pipe ditch firstly during laying construction, then working steel pipes of two adjacent direct-buried heat-insulating pipes are welded together, at the moment, the ports of the working steel pipes of the direct-buried heat-insulating pipes need to be exposed out of the ports of the polyethylene outer protective pipes so as to be convenient for welding in a construction site, therefore, heat-insulating layers are not manufactured in advance near the two ports of the working steel pipes, heat is supplemented and insulated after welding, and the supplementary heat insulation at the welding seams of the working steel pipes is called 'repaired mouth'.
At present, the joint coating process is a hot melting method, which adopts a hot melting connection principle, adopts a polyethylene short sleeve joint with the same diameter as the outer protective pipe of the laid heat-insulating pipe, and the principle is that the short sleeve is fixedly expanded, then is sleeved at the end part of the outer protective pipe of the laid heat-insulating pipe, then is heated by nuclear radiation and liquefied gas baking, so that the diameter of the short sleeve after being fixedly expanded is reduced, and is tightly contacted with the outer protective pipe, the inner wall of the end part of the short sleeve is preset with a resistance wire, is heated by electrifying, so that the short sleeve can be in hot melting connection with the outer protective pipe, and finally, a heat-insulating material is filled in the short sleeve. The construction quality of the hot melting method is reliable, and the connection quality of the polyethylene outer protective pipe and the polyethylene short sleeve can be ensured; the disadvantages are high cost and long construction time, wherein the main reason of high cost is high nuclear radiation cost and liquefied gas baking and heating cost; the main reason for long construction time of the on-site repaired mouth is that the time for roasting and heating the liquefied gas is long.
The joint coating process also adopts a mechanical joint coating method, the joint coating method adopts a common polyethylene short sleeve, the inner diameter of the short sleeve is larger than the outer diameter of the laid outer protective pipe of the heat-insulating pipe, during construction, the short sleeve is sleeved at the end part of the outer protective pipe, and then the end part of the short sleeve is bound on the end part of the outer protective pipe by using a steel belt or a steel wire rope.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a shrinking device for joint coating of a directly-buried heat-insulating pipe.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a contraction device for joint coating of a directly-buried heat-insulating pipe comprises at least two hoops and a locking bolt, wherein the at least two hoops are arranged on the same circumference at intervals, and adjacent hoops are connected through the locking bolt; the hoop is composed of an arc-shaped plate with an angle less than 180 degrees and lug plates respectively arranged at two ends of the arc-shaped plate, and a positioning plate is arranged on one side, located at an opening of the arc-shaped plate, of each lug plate; two ends of the locking bolt respectively penetrate through the lug plates of the adjacent hoops, a positioning block is arranged in the middle of the locking bolt, and one side surface of the positioning block is in contact with the positioning block; the locating piece on be equipped with the jackscrew of perpendicular to locking bolt, jackscrew one end pass the locating piece and with locating piece threaded connection, the jackscrew other end is the work end, is equipped with the briquetting in one side of work end, the briquetting is used for filling the space between the adjacent otic placode and compresses tightly the circumference that the clamp centers on.
The middle part of the positioning block is provided with a threaded through hole A and is connected with the locking bolt through the threaded through hole A; threaded through holes C are respectively formed in the two sides of the threaded through hole A, and a jackscrew is arranged in each threaded through hole C; each jackscrew is connected with a pressing block, cushion blocks are arranged on two sides of each pressing block, and the cushion blocks are used for filling gaps between the pressing blocks and the lug plates.
One side surface of the cushion block is contacted with the lug plate, the other side surface of the cushion block is provided with an inclined surface B, and the inclined surface B is contacted with the pressing block.
The working end of the jackscrew is provided with a spherical surface, and the diameter of the spherical surface is larger than that of the jackscrew; one side of the pressing block is provided with an arc-shaped working surface, the other side of the pressing block is provided with a ring sleeve, the ring sleeve is provided with a through hole, the diameter of the through hole is larger than the diameter of the jackscrew and smaller than the diameter of the spherical surface, one side of the through hole is provided with a stepped hole, and the stepped hole is in threaded connection with the pressing block; the working end of the jackscrew penetrates through the through hole, and the spherical surface of the working end of the jackscrew is positioned in the step hole.
Two ends of the arc-shaped working surface of the pressing block are respectively provided with an inclined surface A, and the inclined surfaces A are in contact with the cushion blocks.
The utility model has the beneficial effects that: the utility model adopts the hoops to shrink the caliber of the short sleeve, the gap between the adjacent hoops is compressed by the pressing block and the cushion block, so that the long-acting sealing between the short sleeve and the outer protecting pipe can be ensured, after the short sleeve is buried, the gap between the short sleeve and the outer protecting pipe is not cracked, the hole is not easy to appear, the construction is simple and easy, the cost is low, and the construction quality can be greatly improved.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is an enlarged view of a portion a of fig. 1.
FIG. 3 is a partial exploded view of adjacent clip connection locations.
Fig. 4 is a schematic view of the deployment of a single clip.
Fig. 5 is a schematic view of the connection between the positioning block and the locking bolt.
Fig. 6 is a perspective view of the positioning block.
Fig. 7 is a front view of the collar.
FIG. 8 is a view showing a structure of a repaired part after the repair is performed by the present apparatus.
In the figure: 1. the device comprises a hoop, 2, a locking bolt, 3, a positioning block, 4, a jackscrew, 5, a pressing block, 6, a cushion block, 7, a working steel pipe, 8, a heat insulation layer, 9, an outer protective pipe, 10, a short sleeve, 101, an arc-shaped plate, 102, an ear plate, 103, a positioning plate, 301, a threaded through hole A, 302, a threaded through hole C, 401, a spherical surface, 501, a ring sleeve, 511, a through hole, 512 and a stepped hole.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-7, a shrinking device for repairing a joint of a direct-buried heat-insulating pipe comprises at least two hoops 1 and locking bolts 2, wherein the at least two hoops 1 are arranged on the same circumference at intervals, and the adjacent hoops 1 are connected through the locking bolts 2; the clamp 1 is composed of an arc-shaped plate 101 with an angle less than 180 degrees and ear plates 102 respectively arranged at two ends of the arc-shaped plate 101, and a positioning plate 103 is arranged on one side, located at an opening of the arc-shaped plate 101, of each ear plate 102; two ends of the locking bolt 2 respectively penetrate through the lug plates 102 of the adjacent hoops 1, a positioning block 3 is arranged in the middle of the locking bolt 2, and one side surface of the positioning block 3 is in contact with a positioning plate 103; the positioning block 3 is provided with a jackscrew 4 perpendicular to the locking bolt 2, one end of the jackscrew 4 penetrates through the positioning block 3 and is in threaded connection with the positioning block 3, the other end of the jackscrew 4 is a working end, one side of the working end is provided with a pressing block 5, and the pressing block 5 is used for filling a gap between the adjacent ear plates 102 and pressing the circumference surrounded by the clamp 1.
Specifically, in an embodiment of the present invention, a structure of two bands 1 and two locking bolts 2 is adopted, and the specific application is as shown in fig. 1 and fig. 2, the two bands 1 are symmetrically arranged at the junction of a short sleeve 10 and an outer protective sleeve 9, a gap is left between the two bands 1, the adjacent bands 1 are connected through the locking bolts 2, and the two bands 1 and the two locking bolts 2 surround the outer circumferential surface of the short sleeve 10; when the locking bolt 2 is tightened, the arc-shaped plate 101 of the hoop 1 is attached to the short sleeve 10, but between the adjacent ear plates 102, due to the fact that no arc-shaped plate exists, a leakage point appears when the short sleeve 10 is stressed, and the short sleeve is easily separated from the outer protective pipe 9, therefore, the locking bolt 2 is provided with the positioning block 3, the positioning block 3 is provided with the jackscrew 4, the jackscrew 4 is used for driving the pressing block 5 to press the short sleeve 10, and the short sleeve 10 at the position is tightly attached to the outer protective pipe; in order to ensure the stable movement direction and force of the jackscrew, as shown in fig. 2, 3 and 4, a positioning plate 103 is arranged on one side of the ear plate 102, which is positioned at the opening of the arc plate 101, when the positioning block 3 is contacted with the positioning plate, the jackscrew 4 is screwed, the movement direction of the jackscrew 4 is not deviated, and when the jackscrew is subjected to the reaction force of the pressing block 5, the positioning block 3 is not deflected, so that a stable structure is obtained.
As shown in fig. 5 and 6, a threaded through hole a301 is formed in the middle of the positioning block 3 and connected to the locking bolt 2 through the threaded through hole a 301; threaded through holes C302 are respectively formed in two sides of the threaded through hole A301, and a jackscrew 4 is arranged in each threaded through hole C302; as shown in fig. 2, each jackscrew 4 is connected with a pressing block 5, two sides of each pressing block 5 are also provided with cushion blocks 6, and the cushion blocks 6 are used for filling the gap between the pressing block 5 and the ear plate 102. The designed cushion block 6 can supplement the area compressed by the pressing block 5, so that the whole circumference of the short sleeve 10 between the two ear plates 101 is stressed, and after the short sleeve 10 is buried underground, the joint of the short sleeve 10 and the outer protective pipe 9 cannot crack.
One side surface of the cushion block 6 is in contact with the lug plate 102, and the other side surface is provided with an inclined surface B which is in contact with the pressing block 5. The inclined plane B can enable the cushion block to be displaced to the side of the lug plate after being stressed, and the gap is filled better.
The working end of the jackscrew 4 is provided with a spherical surface 401, and the diameter of the spherical surface 401 is larger than that of the jackscrew 4; one side of the pressing block 5 is provided with an arc-shaped working surface, the other side of the pressing block is provided with a ring sleeve 501, as shown in fig. 7, the ring sleeve 501 is provided with a through hole 511, the diameter of the through hole 511 is larger than that of the jackscrew 4 and smaller than that of the spherical surface 401, one side of the through hole 511 is provided with a stepped hole 512, and the stepped hole 512 is in threaded connection with the pressing block 5; the working end of the jackscrew 4 penetrates through the through hole 511, and the spherical surface 401 of the working end of the jackscrew 4 is positioned in the stepped hole 512.
Two ends of the arc-shaped working surface of the pressing block 5 are respectively provided with an inclined surface A, and the inclined surfaces A are in contact with the cushion blocks 6.
Specifically, as shown in fig. 1 and 8, in the heat preservation pipe to be butted, a short sleeve 10 is firstly sleeved on the outer protection pipe 9 on one side, then the ports of the two working steel pipes 7 are welded together, and after the welding, the two ends of the short sleeve 10 are respectively sleeved on the ports of the adjacent outer protection pipes 9; then, two ends of the short sleeve 10 are respectively provided with the device; after the device is connected, the locking bolt 2 is screwed, the arc-shaped plate 101 tightly presses the port of the short sleeve 10 on the port of the outer protective pipe 9, then the jackscrew is screwed, so that the pressing block 5 tightly presses the area between the ear plates 102, and when the pressing block is tightly pressed, cushion blocks are arranged on two sides of the pressing block, thereby ensuring the integrity of pressing; and finally, drilling a pouring hole on the short sleeve 10, injecting a polyurethane foaming material into a cavity between the short sleeve 10 and the working steel pipe 7 to form the heat insulation layer 8, and then plugging the pouring hole, so that the joint coating is finished.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
The utility model is not described in detail in the prior art.
Claims (5)
1. A contraction device for joint coating of a directly-buried heat-insulating pipe comprises at least two hoops (1) and locking bolts (2), wherein the at least two hoops (1) are arranged on the same circumference at intervals, and the adjacent hoops (1) are connected through the locking bolts (2); the method is characterized in that: the clamp (1) is composed of an arc-shaped plate (101) with an angle less than 180 degrees and ear plates (102) respectively arranged at two ends of the arc-shaped plate (101), and a positioning plate (103) is arranged on one side, located at an opening of the arc-shaped plate (101), of each ear plate (102); two ends of the locking bolt (2) respectively penetrate through the lug plates (102) of the adjacent hoops (1), a positioning block (3) is arranged in the middle of the locking bolt (2), and one side surface of the positioning block (3) is in contact with the positioning plate (103); locating piece (3) on be equipped with jackscrew (4) perpendicular to locking bolt (2), jackscrew (4) one end pass locating piece (3) and with locating piece (3) threaded connection, jackscrew (4) other end is the work end, is equipped with briquetting (5) in one side of work end, briquetting (5) are used for filling the space between adjacent otic placode (102) and compress tightly the circumference that clamp (1) centers on.
2. The shrinking device for the repaired mouth of the direct-buried thermal insulation pipe as claimed in claim 1, wherein: the middle part of the positioning block (3) is provided with a thread through hole A (301) and is connected with the locking bolt (2) through the thread through hole A (301); threaded through holes C (302) are respectively arranged on two sides of the threaded through hole A (301), and a jackscrew (4) is arranged in each threaded through hole C (302); each jackscrew (4) is connected with one pressing block (5), cushion blocks (6) are further arranged on two sides of each pressing block (5), and the cushion blocks (6) are used for filling gaps between the pressing blocks (5) and the lug plates (102).
3. The shrinking device for the repaired mouth of the direct-buried thermal insulation pipe as claimed in claim 2, wherein: one side surface of the cushion block (6) is in contact with the lug plate (102), the other side surface is provided with an inclined surface B, and the inclined surface B is in contact with the pressing block (5).
4. The shrinking device for the repaired mouth of the direct-buried thermal insulation pipe as claimed in claim 1, wherein: the working end of the jackscrew (4) is provided with a spherical surface (401), and the diameter of the spherical surface (401) is larger than that of the jackscrew (4); one side of the pressing block (5) is provided with an arc-shaped working surface, the other side of the pressing block is provided with a ring sleeve (501), the ring sleeve (501) is provided with a through hole (511), the diameter of the through hole (511) is larger than that of the jackscrew (4) and smaller than that of the spherical surface (401), one side of the through hole (511) is provided with a stepped hole (512), and the stepped hole (512) is in threaded connection with the pressing block (5); the working end of the jackscrew (4) penetrates through the through hole (511), and the spherical surface (401) of the working end of the jackscrew (4) is positioned in the stepped hole (512).
5. The shrinking device for the repaired mouth of the direct-buried thermal insulation pipe as claimed in claim 4, wherein: two ends of the arc-shaped working surface of the pressing block (5) are respectively provided with an inclined surface A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311270.2U CN216045937U (en) | 2021-09-24 | 2021-09-24 | Tightening device for joint coating of directly-buried thermal insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311270.2U CN216045937U (en) | 2021-09-24 | 2021-09-24 | Tightening device for joint coating of directly-buried thermal insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216045937U true CN216045937U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122311270.2U Active CN216045937U (en) | 2021-09-24 | 2021-09-24 | Tightening device for joint coating of directly-buried thermal insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216045937U (en) |
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2021
- 2021-09-24 CN CN202122311270.2U patent/CN216045937U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhongguancun Technology Leasing Co.,Ltd. Assignor: Sanjie energy saving new material Co.,Ltd. Contract record no.: X2022980008802 Denomination of utility model: A tightening device for directly buried insulation pipe joint coating Granted publication date: 20220315 License type: Exclusive License Record date: 20220624 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A tightening device for directly buried insulation pipe joint coating Effective date of registration: 20220627 Granted publication date: 20220315 Pledgee: Zhongguancun Technology Leasing Co.,Ltd. Pledgor: Sanjie energy saving new material Co.,Ltd. Registration number: Y2022980009088 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |