Jacking pipe laying connection structure based on heat distribution pipeline system

Abstract

The utility model discloses a pipe jacking laying connection structure based on a heat distribution pipeline system, which comprises a first pipeline and a second pipeline, inner sleeves are sleeved on the inner walls of the first pipeline and the second pipeline close to the opposite end surfaces, and outer sleeves are sleeved on the outer walls of the first pipeline and the second pipeline close to the opposite end surfaces. According to the utility model, the inner and outer nested connection structure is adopted, and the outer sleeve is made of high-strength alloy steel and can resist chemical erosion and mechanical wear in a harsh environment through special anticorrosive coating treatment; the inner-layer sleeve is made of weather-proof rubber with good flexibility, stress generated by slight displacement can be absorbed through elastic deformation while the inner-layer sleeve is tightly attached to the pipeline body, the buffer sleeve between the two layers of sleeves is made of a honeycomb porous elastic material, the unique three-dimensional structure of the buffer sleeve can effectively buffer external impact force, and the service life of the buffer sleeve is prolonged. And when the pipeline expands with heat and contracts with cold due to temperature change, a compressible space can be provided, and joint cracking caused by stress concentration is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat pipeline application, especially based on the pipe laying connection structure of heat pipeline system. BACKGROUND

[0002] The pipe laying of heat pipeline system is a construction technology of underground pipeline laying without excavating ground. It generates the jacking force by jacking equipment in the working pit, and the prefabricated pipeline is jacked into the soil layer according to the designed slope and direction, until reaching the receiving pit. This laying method has the advantages of not damaging ground traffic and buildings, small influence on the surrounding environment, low construction noise, etc., and can effectively reduce the interference on normal life and production of the city.

[0003] The traditional heat pipeline connection structure generally adopts single-layer connection setting, and only relies on the sleeve made of ordinary steel material, the surface of which is not treated in any special way, and is extremely easy to be corroded by chemical substances in harsh environment, and is difficult to withstand strong mechanical impact. The inner layer is directly connected with the pipeline, lacks flexible buffer material, and cannot effectively respond to slight displacement of the pipeline, and is easy to produce stress accumulation. When there is no buffer sleeve between the pipelines, the elastic structure capable of buffering external impact force is missing, and when the pipeline expands or shrinks due to temperature change, there is no compressible space, and stress concentration will cause frequent cracking at the connection, therefore, the utility model provides the pipe laying connection structure based on the heat pipeline system. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem to provide the pipe laying connection structure based on the heat pipeline system, adopts the inner and outer nested type connection structure, the outer sleeve selects the high strength alloy steel material, passes through the special anticorrosive coating treatment, can resist the chemical corrosion and mechanical wear and tear in the severe environment, the inner sleeve adopts the weatherproof rubber with good flexibility, can absorb the stress produced by slight displacement through the elastic deformation when closely adhering to the pipeline body, the buffer sleeve between the double-layer sleeve adopts the honeycomb porous elastic material, its unique three-dimensional structure not only can effectively buffer the external impact force, but also can provide the compressible space when the pipeline expands or shrinks due to temperature change, avoids the cracking at the connection due to stress concentration.

[0005] To solve the above technical problem, one technical scheme of the utility model is provided: provide the pipe laying connection structure based on the heat pipeline system, including the first pipeline and the second pipeline, the inner wall of the first pipeline and the second pipeline is close to the sleeve of the inner sleeve of the opposite end face position, the outer wall of the first pipeline and the second pipeline is close to the sleeve of the outer sleeve of the opposite end face position;

[0006] The outer sleeve is wrapped outside the inner sleeve, and a buffer sleeve is arranged inside the space formed by the outer sleeve and the inner sleeve.

[0007] The utility model further sets up: the outer wall of inner sleeve is close to the end face position symmetry and has the positioning ring, and is connected to the end face of first pipeline and second pipeline through the positioning ring respectively.

[0008] Through the above technical scheme, the positioning ring can be used to position the insertion position of the inner sleeve, so that the inner sleeve can be evenly connected inside the first pipeline and the second pipeline, thereby realizing stable connection.

[0009] The utility model further sets up: the buffer sleeve is honeycomb elastic setting, and the both ends are respectively abutted to the positioning ring.

[0010] Through the above technical scheme, the honeycomb buffer sleeve can effectively buffer the pressure from the outside, and the elastic setting can effectively protect the double-layer connection structure and prevent damage.

[0011] The utility model further sets up: the outer wall of inner sleeve is close to the end face position symmetry and has the positioning ring, and is connected to the end face of first pipeline and second pipeline through the positioning ring respectively.

[0012] Through the above technical scheme, the first sealing ring and the second sealing ring can be used to seal the part of the inner sleeve extending into the first pipeline and the second pipeline, so that the sealing property of the connection part can be maintained during work.

[0013] The utility model further sets up: the inner wall of outer sleeve is provided with the inner thread and the outer thread matched with the connection part of first pipeline and second pipeline, so as to realize the preliminary fixation of outer sleeve and first pipeline and second pipeline.

[0014] Through the above technical scheme, when the outer sleeve is installed, it can be preliminarily fixed through threaded connection, thereby facilitating subsequent reinforcing operation.

[0015] The utility model further sets up: the outer wall of outer sleeve is close to the end face position symmetry and has the positioning ring, and is connected to the end face of first pipeline and second pipeline through the positioning ring respectively.

[0016] Through the technical scheme, when the outer sleeve is installed, the two end connecting flanges can be bolted and fixed, and the sealing gaskets are used for sealing the connecting part, so that external air or liquid cannot enter the inside of the outer sleeve, thereby preventing internal damage.

[0017] The utility model further provides: the outer wall of outer sleeve is close to the fixed connection of protruding ring position symmetry, two sealing gaskets are respectively covered and connected in the outer wall of protruding ring, and two sealing gaskets both sides are arc setting.

[0018] Through the technical scheme, the arc setting of the sealing gasket makes its both sides closely adhere under the action of the connecting flange, so that more firm sealing is realized, and under the action of the protruding ring, the sealing gasket can be fixed during installation.

[0019] The utility model has the advantages that:

[0020] 1. The pipe laying connection structure based on heat pipe system adopts an inner-outer nested connection structure, the outer sleeve is made of high-strength alloy steel material and is treated by a special anticorrosive coating, so that it can resist chemical corrosion and mechanical wear in harsh environments; the inner sleeve is made of weather-resistant rubber with good flexibility, which can closely adhere to the pipe body and absorb stress caused by slight displacement through elastic deformation.

[0021] 2. The pipe laying connection structure based on heat pipe system adopts a honeycomb porous elastic material for the buffer sleeve between the double-layered sleeves, and the unique three-dimensional structure can effectively buffer external impact force and provide compressible space when the pipe expands or shrinks due to temperature changes, so as to avoid cracking of the connecting part caused by stress concentration. DRAWINGS

[0022] Figure 1 It is a structural drawing of the pipe laying connection structure based on heat pipe system of the utility model;

[0023] Figure 2 It is a sectional view of the pipe laying connection structure based on heat pipe system of the utility model;

[0024] Figure 3 It is Figure 2 It is an enlarged view of A in the middle;

[0025] Figure 4 It is a structural drawing of the inner sleeve in the pipe laying connection structure based on heat pipe system of the utility model;

[0026] Figure 5 It is a structural drawing of the outer sleeve in the pipe laying connection structure based on heat pipe system of the utility model;

[0027] Figure 6 This is a structural diagram of the buffer sleeve in the pipe jacking connection structure based on the thermal pipeline system of this utility model.

[0028] In the diagram: 1. First pipe; 11. First positioning flange; 12. First sealing ring; 2. Second pipe; 21. Second positioning flange; 22. Second sealing ring; 3. Inner sleeve; 31. Positioning ring; 4. Outer sleeve; 41. Connecting flange; 42. Raised ring; 43. Sealing gasket; 5. Buffer sleeve. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0030] like Figures 1-4 As shown, the pipe jacking connection structure based on the thermal pipeline system includes a first pipe 1 and a second pipe 2. An inner sleeve 3 is fitted onto the inner wall of the first pipe 1 and the second pipe 2 near their opposite end faces. Positioning rings 31 are symmetrically welded to the outer wall of the inner sleeve 3 near their end faces. These positioning rings 31 are bolted to the end faces of the first pipe 1 and the second pipe 2, respectively. This allows the positioning rings 31 to position the inner sleeve 3 at its insertion point, ensuring a uniform connection within the first pipe 1 and the second pipe 2, thus achieving a stable connection. The two end faces of the outer wall of the inner sleeve 3 extend to the ports of the first pipe 1 and the second pipe 2, respectively, and the outer wall abuts against and is engaged with the first sealing ring 12 and the second sealing ring 22 connected to the inner wall of the first pipe 1 and the second pipe 2. This allows the first sealing ring 12 and the second sealing ring 22 to seal the portion of the inner sleeve 3 extending into the first pipe 1 and the second pipe 2, maintaining the seal at the connection point during operation.

[0031] like Figure 3 and Figure 5As shown, an outer sleeve 4 is fitted onto the outer wall of the first pipe 1 and the second pipe 2 near their opposite end faces. The inner wall of the outer sleeve 4 has matching internal and external threads at the connection point with the first pipe 1 and the second pipe 2, enabling initial fixation of the outer sleeve 4 to the first pipe 1 and the second pipe 2. This facilitates initial fixation via threaded connection during installation, making subsequent reinforcement operations easier. Connecting flanges 41 are symmetrically welded to the outer wall of the outer sleeve 4 near their end faces. These two connecting flanges 41 are bolted to the first positioning flange 11 welded to the outer wall of the first pipe 1 and the second positioning flange 21 welded to the outer wall of the second pipe 2, respectively. The first positioning flange 11 and the second positioning flange 21 are connected to their corresponding connecting flanges... Sealing gaskets 43 are respectively provided between flanges 41, facilitating bolt connection and fixation of the outer sleeve 4 using the connecting flanges 41 at both ends during installation. The sealing gaskets 43 seal the connection, preventing external air or liquid from entering the inner part of the outer sleeve 4 and causing internal damage. Symmetrically fixed protruding rings 42 are attached to the outer wall of the outer sleeve 4 near the end face. Two sealing gaskets 43 are respectively fitted onto the outer wall of the protruding rings 42, and both sealing gaskets 43 have arc-shaped sides. The arc shape of the sealing gaskets 43 allows them to fit tightly against the connecting flanges 41, achieving a more secure seal. Simultaneously, the protruding rings 42 ensure that the sealing gaskets 43 remain fixed during installation.

[0032] like Figure 6 As shown, the outer sleeve 4 wraps around the inner sleeve 3, and a buffer sleeve 5 is provided inside the space formed. The buffer sleeve 5 is honeycomb-shaped and elastic, with its two ends abutting against the positioning ring 31. The honeycomb-shaped buffer sleeve 5 can effectively buffer the pressure brought by the outside, and its elastic design can effectively protect the double-layer connection structure and prevent damage. The inner wall and outer wall of the buffer sleeve 5 are respectively attached to the inner sleeve 3 and the outer sleeve 4 to ensure stable support between the inner sleeve 3 and the outer sleeve 4.

[0033] In use, the positioning rings 31 on the inner sleeve 3 and the first positioning flanges 11 and 21 on the first pipe 1 and the second pipe 2 are all movably fitted. First, the two positioning rings 31 and the buffer sleeve 5 of the inner sleeve 3 are fitted onto the outer wall of the inner sleeve 3, and one of the positioning rings 31 is welded and fixed. Then, the first sealing ring 12 and the second sealing ring 22 are installed inside the first pipe 1 and the second pipe 2 respectively. The inner sleeve 3 is inserted into the inside of the first pipe 1 and the second pipe 2, and the position is fixed by the pre-welded positioning rings 31. At the same time, bolts are used to connect it to the first pipe 1 or the second pipe 2. Then, the other positioning ring 31 is welded and bolted and fixed. Next, the outer sleeve 4, which is installed together with the inner sleeve 3 on the first pipe 1 or the second pipe 2, is installed. The first positioning flanges 11 and the second positioning flanges 21 on the first pipe 1 and the second pipe 2 are welded and fixed. Then, bolts are used to connect and fix the outer sleeve 4, thereby completing the double-layer protection setting at the connection.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pipe jacking connection structure based on a thermal pipeline system, comprising a first pipe (1) and a second pipe (2), characterized in that: The inner walls of the first pipe (1) and the second pipe (2) are fitted with inner sleeves (3) near the opposite end faces, and the outer walls of the first pipe (1) and the second pipe (2) are fitted with outer sleeves (4) near the opposite end faces. The outer sleeve (4) wraps around the outside of the inner sleeve (3), and a buffer sleeve (5) is provided inside the space formed. The inner wall and outer wall of the buffer sleeve (5) are respectively attached to the inner sleeve (3) and the outer sleeve (4) to ensure stable support between the inner sleeve (3) and the outer sleeve (4).

2. The pipe jacking connection structure based on a thermal pipeline system according to claim 1, characterized in that: The outer wall of the inner sleeve (3) is symmetrically welded with positioning rings (31) near the end face, and the positioning rings (31) are bolted to the end faces of the first pipe (1) and the second pipe (2) respectively.

3. The pipe jacking connection structure based on a thermal pipeline system according to claim 2, characterized in that: The buffer sleeve (5) is a honeycomb-shaped elastic structure, with its two ends abutting against the positioning ring (31).

4. The pipe jacking connection structure based on a thermal pipeline system according to claim 2, characterized in that: The outer two ends of the inner sleeve (3) extend to the port positions of the first pipe (1) and the second pipe (2), respectively, and the outer wall abuts against the first sealing ring (12) and the second sealing ring (22) that are engaged with the inner walls of the first pipe (1) and the second pipe (2).

5. The pipe jacking connection structure based on a thermal pipeline system according to claim 1, characterized in that: The inner wall of the outer sleeve (4) is provided with matching internal and external threads at the connection between the first pipe (1) and the second pipe (2) to achieve initial fixation of the outer sleeve (4) with the first pipe (1) and the second pipe (2).

6. The pipe jacking connection structure based on a thermal pipeline system according to claim 5, characterized in that: The outer wall of the outer sleeve (4) is symmetrically welded with connecting flanges (41) near the end face. The first positioning flange (11) welded to the outer wall of the first pipe (1) and the second positioning flange (21) welded to the outer wall of the second pipe (2) are respectively bolted to the two connecting flanges (41). A sealing gasket (43) is provided between the first positioning flange (11) and the second positioning flange (21) and the corresponding connecting flange (41).

7. The pipe jacking connection structure based on a thermal pipeline system according to claim 6, characterized in that: The outer wall of the outer sleeve (4) is symmetrically fixed with a protruding ring (42) near the end face. The two sealing gaskets (43) are respectively sleeved on the outer wall of the protruding ring (42), and both sides of the two sealing gaskets (43) are arc-shaped.

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