CN212056299U - Thermal expansion compensator for repairing lining of thermal power pipe network - Google Patents

Abstract

The utility model discloses a thermal energy compensator for repairing lining in thermal power pipe network connects between two metal pipeline, including compensator shell and interior bushing pipe, the thermal deformation volume of interior bushing pipe is greater than metal pipeline, interior bushing pipe sets up just surpass metal pipeline's tip opening in the metal pipeline, all be equipped with the spacing ring on metal pipeline and the interior bushing pipe, be equipped with spacing interval in the compensator shell for the motion to metal pipeline and spacing ring carries on spacingly, the beneficial effects of the utility model are that: by adopting a nested structure, the characteristic of large thermal deformation of the inner lining pipe is utilized according to different thermal deformation of the inner lining pipe and the metal pipeline, the inner lining pipe and the metal pipe can be simultaneously compensated, and the requirement that the inner lining pipe and the outer metal pipe are required to be compensated for trenchless restoration of a thermal underground pipe network can be met; meanwhile, the half structure is adopted, so that the space limitation can be effectively solved, and the installation and the disassembly are also convenient.

Description

Thermal expansion compensator for repairing lining of thermal power pipe network

Technical Field

The utility model relates to a heating power pipe network compensator specifically is a thermal expansion compensator for heat power pipe network lining restoration.

Background

The force pipe network is a high-temperature high-pressure pipeline, the pipeline can generate thermal elongation in the heat medium conveying process, and various compensators are required to be arranged on the pipeline in order to eliminate the influence of thermal stress generated on the pipeline due to the thermal elongation. The existing heat pipe network compensator mainly comprises a natural compensator, a corrugated pipe compensator, a sleeve compensator and the like. The space in the valve well room of the thermal underground pipe network is smaller, and the sleeve type compensator is widely used due to large compensation amount, low cost, low fluid resistance and small occupied space.

When the heat supply underground pipe network uses the trenchless repairing technology, the lining pipe is also influenced by thermal stress, and the thermal deformation is larger than that of metal. The existing compensator can not simultaneously meet the deformation of the inner lining pipe and the outer metal pipe.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a thermal expansion compensator is used in restoration of hot-force pipe network lining to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the thermal expansion compensator for repairing the inner lining of the thermal power pipe network is connected between two metal pipelines and comprises a compensator shell and an inner lining pipe, wherein the thermal deformation amount of the inner lining pipe is larger than that of the metal pipelines, the inner lining pipe is arranged in the metal pipelines and exceeds the end opening of the metal pipelines, limiting rings are arranged on the metal pipelines and the inner lining pipe, and a limiting interval is arranged in the compensator shell and used for limiting the movement of the metal pipelines and the limiting rings.

As a further aspect of the present invention: and a rubber sealing ring is further arranged between the compensator shell and the lining pipe and used for preventing leakage.

As a further aspect of the present invention: the compensator is characterized in that a groove for mounting a rubber sealing ring is formed in the compensator shell, and the wall surface of the groove and a flanging at the opening of the compensator shell form the limiting interval.

As a further aspect of the present invention: and a filling material is arranged between the metal pipeline and the lining pipe.

As a further aspect of the present invention: the compensator shell is of a half structure.

Compared with the prior art, the beneficial effects of the utility model are that: by adopting a nested structure, the characteristic of large thermal deformation of the inner lining pipe is utilized according to different thermal deformation of the inner lining pipe and the metal pipeline, the inner lining pipe and the metal pipe can be simultaneously compensated, and the requirement that the inner lining pipe and the outer metal pipe are required to be compensated for trenchless restoration of a thermal underground pipe network can be met; meanwhile, the half structure is adopted, so that the space limitation can be effectively solved, and the installation and the disassembly are also convenient.

Drawings

Fig. 1 is a schematic structural view (normal temperature state) of a thermal expansion compensator for repairing a liner of a thermal power pipe network.

Fig. 2 is a schematic view showing a structure of a thermal expansion compensator for repairing a liner of a thermal pipe network (compensation state).

Fig. 3 is a schematic view of a thermal expansion compensator for repairing the inner liner of a thermal pipe network in a huff structure.

In the figure: 1-metal pipeline, 2-compensator shell, 3-lining pipe, 4-rubber sealing ring, 5-spacing ring and 6-filling material.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-2, in an embodiment of the present invention, a thermal expansion compensator for repairing a lining in a thermal power pipe network is connected between two metal pipelines 1, and includes a compensator housing 2 and a lining pipe 3, the thermal deformation amount of the lining pipe 3 is greater than that of the metal pipeline 1, the lining pipe 3 is disposed in the metal pipeline 1 and exceeds the end opening of the metal pipeline 1, the metal pipeline 1 and the lining pipe 3 are both provided with a limit ring 5, and the compensator housing 2 is provided with a limit interval for limiting the movement of the metal pipeline 1 and the limit ring 5.

In this embodiment, the lining pipe 3 and the metal pipeline 1 are made of different materials, and the thermal deformation amount of the lining pipe 3 is larger than that of the metal pipeline 1, so that the lining pipe 3 is firstly thermally deformed during operation, and slides in a deformation space of the lining pipe 3 due to different thermal deformation coefficients and different temperatures and heating times, and the metal pipeline 1 is firstly cooled and restored to an installation position during cooling, and then the lining pipe 3 is cooled and restored to the installation position, thereby completing a thermal stress compensation cycle. Of course, the above-mentioned deformation amounts are all limited in a limiting interval within the compensator housing 2.

Referring to fig. 1-2, in an embodiment of the present invention, a thermal expansion compensator for repairing a liner of a thermal power pipe network, a rubber sealing ring 4 is further disposed between the compensator housing 2 and the liner pipe 3 for preventing leakage.

Since there is a gap between the two lining tubes 3, in order to prevent leakage of media and the like therein, particularly in the initial installation position (i.e., not heated), a rubber packing 4 is provided between the compensator housing 2 and the lining tube 3, and the packing is replaced with the rubber packing 4.

Referring to fig. 1-2, in an embodiment of the present invention, in a thermal expansion compensator for repairing a liner of a thermal power pipe network, a groove for installing a rubber seal ring 4 is disposed on a compensator housing 2, and a wall surface of the groove and a flange at an opening of the compensator housing 2 form the limit section.

In this embodiment, the spacing region on the compensator casing 2 can prevent the inner lining tube 3 and the metal pipeline 1 from being separated from the compensator casing 2 during cooling, and simultaneously, the spacing region can limit the inner lining tube 3 and the metal pipeline 1 when the thermal deformation occurs.

Referring to fig. 1-2, in an embodiment of the present invention, a thermal expansion compensator for repairing a liner of a thermal power pipe network is provided, a filling material 6 is disposed between the metal pipe 1 and the liner pipe 3, and the filling material 6 in this embodiment is the same as a filling material in the prior art, which is not specifically disclosed or limited herein.

Referring to fig. 3, in an embodiment of the present invention, a thermal expansion compensator for repairing a liner of a thermal pipe network, the compensator casing 2 is of a huff structure.

In practical application, under the condition that the inner space of the inspection well and the diameter of the well mouth are limited, the Hough structure is adopted, so that the space limitation can be effectively solved, and meanwhile, the installation and the disassembly are also convenient.

The utility model discloses a thermal expansion compensator for repairing lining in heat power pipe network in the above embodiment, adopt nested structure, according to the different thermal deformation amount of inside lining pipe and metal pipeline, utilize the big characteristic of inside lining pipe thermal deformation amount, can compensate inside lining pipe and metal pipe simultaneously, can satisfy the requirement that heating power underground pipe network non-excavation restoration inside lining pipe and outer metal pipe all need the compensation; meanwhile, the half structure is adopted, so that the space limitation can be effectively solved, and the installation and the disassembly are also convenient.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a thermal expansion compensator for restoration of thermal power pipe network lining, connects between two metal pipeline (1), its characterized in that, including compensator shell (2) and interior bushing pipe (3), the thermal deformation volume of interior bushing pipe (3) is greater than metal pipeline (1), interior bushing pipe (3) set up in metal pipeline (1) and surpass the tip opening of metal pipeline (1), all be equipped with spacing ring (5) on metal pipeline (1) and interior bushing pipe (3), be equipped with spacing interval in compensator shell (2) for carry on spacingly to the motion of metal pipeline (1) and spacing ring (5).

2. A thermal expansion compensator for repairing the lining of a thermal power pipe network according to claim 1, wherein a rubber packing (4) is further provided between the compensator housing (2) and the lining pipe (3) for preventing leakage.

3. The thermal expansion compensator for repairing the lining of the thermal power pipe network as claimed in claim 2, wherein the compensator shell (2) is provided with a groove for mounting a rubber sealing ring (4), and the wall surface of the groove and a flanging at the opening of the compensator shell (2) form the limit interval.

4. A thermal expansion compensator for repairing the lining of a thermal power pipe network according to claim 1, wherein a filler material (6) is provided between the metal pipe (1) and the lining pipe (3).

5. A thermal expansion compensator for repairing the lining of a thermal power pipe network according to claim 1, 2, 3 or 4, wherein the compensator casing (2) is of a Haff type structure.

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