Heat distribution pipeline installation through-wall joint capable of absorbing axial thermal displacement

Abstract

The utility model discloses a heat distribution pipeline installation through-wall joint capable of absorbing axial thermal displacement. The heat distribution pipeline installation through-wall joint solves the problem that a traditional heat distribution pipeline through-wall joint cannot absorb the axial thermal displacement. The node comprises a through-wall steel pipe, a heat distribution pipeline, an elastic supporting frame, an expansion water stop strip, a flange piece and a polyurethane foaming filling body, the through-wall steel pipe is pre-buried in a wall body, the heat distribution pipeline penetrates through the through-wall steel pipe, and the expansion water stop strip, the elastic supporting frame and the expansion water stop strip are sequentially arranged in an annular space between the through-wall steel pipe and the heat distribution pipeline. The expansion water stop strip, the elastic supporting frame and the expansion water stop strip are fixed through the flange piece, and a polyurethane foaming filling body is arranged in an annular space where the elastic supporting frame is located. The heat distribution pipeline has the axial displacement performance, certain waterproof performance is achieved while the displacement performance is guaranteed, the node has the waterproof performance and the axial displacement capacity, and the heat distribution pipeline through-wall node can absorb axial heat displacement.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal pipeline wall penetration construction. Background Art

[0002] In areas with centralized heating, the heating network is an important bridge connecting the heat source and the heat user, among which the heat pipe is the most common heat facility. The basic structure of the current heat pipe is that it includes a cast iron core tube or a spirally welded core tube 21, a rubber sponge or foam sponge insulation layer 22 is arranged on the outside of the core tube 21 for heat insulation, and the outermost shell 23 is made of PP, PE or PVC. Figure 1 shown.

[0003] The heat medium usually transported by thermal pipelines is hot water or high-temperature steam, and the temperature of the heat medium transported usually ranges from 90 to 120 degrees. Therefore, when the heat medium is transported in the thermal pipeline, the thermal pipeline will produce a large axial thermal displacement. This thermal displacement will cause stress at the connection point between the thermal pipeline and the fixed building.

[0004] In the prior art, direct fixation is used in the construction structure of the thermal pipe through the wall node, that is, the thermal pipe is directly inserted into the pre-buried pipe through the wall and fixed with mortar. This structure forms a rigid connection between the thermal pipe and the wall. Therefore, when the thermal pipe produces axial thermal displacement, it cannot be absorbed. The generated axial stress easily causes plastic deformation of the thermal pipe, thereby affecting the safety of the thermal network. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the utility model provides a thermal pipeline installation wall-penetrating node capable of absorbing axial thermal displacement, thereby solving the problem that traditional thermal pipeline wall-penetrating nodes cannot absorb axial thermal displacement.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A thermal pipeline installation through-wall node capable of accommodating axial thermal displacement comprises a through-wall steel pipe, a thermal pipeline, an elastic support frame, an expansion waterstop strip, a flange and a polyurethane foam filling body, characterized in that: the through-wall steel pipe is pre-buried in the wall, and the thermal pipeline passes through the through-wall steel pipe, and the expansion waterstop strip, the elastic support frame and the expansion waterstop strip are sequentially arranged in the annular space between the through-wall steel pipe and the thermal pipeline, the flange fixes the expansion waterstop strip, the elastic support frame and the expansion waterstop strip, and a polyurethane foam filling body is provided in the annular space where the elastic support frame is located.

[0008] The elastic support frame is a corrugated elastic tube structure as a whole.

[0009] Furthermore, the elastic support frame has retaining rings at both ends. The retaining rings are circular and perpendicular to the axial direction of the wall-penetrating steel pipe. There are multiple bands between the two retaining rings. The cross-section of the band is a V-shaped structure. The inner surface of the band is abutted against the thermal pipeline, and the outer surface is abutted against the wall-penetrating steel pipe.

[0010] Furthermore, a rubber sealing ring is arranged at the wave band abutting against the thermal pipeline, and the rubber sealing ring is clamped in the clamping groove of the elastic support frame and elastically cooperates with the surface of the thermal pipeline.

[0011] Furthermore, the elastic support frame is a metal piece made of stainless steel.

[0012] Furthermore, the through-the-wall steel pipe is provided with a grouting pipe and an exhaust pipe, wherein the grouting pipe is connected to a low point of the through-the-wall steel pipe, and the exhaust pipe is connected to a high point of the through-the-wall steel pipe.

[0013] Furthermore, the two ends of the wall-penetrating steel pipe are provided with a retaining ring and a flange, wherein the flange is bolted to the flange member, and the retaining ring and the flange member limit the expansion water stop strip at both ends of the annular space.

[0014] Furthermore, a triangular rib is arranged on the outer side of the retaining ring.

[0015] Furthermore, a water stop ring is provided on the outer surface of the wall-penetrating steel pipe, and the water stop ring is pre-buried in the wall.

[0016] Furthermore, the flange component is composed of a pressure ring, a flange ring and a transition plate.

[0017] The beneficial effects of the utility model are:

[0018] In this installation node, a polyurethane foam filling body, an elastic support frame, and an expansion water stop strip are formed between the thermal pipeline and the through-wall steel pipe, and the thermal pipeline shell forms a flexible match through the polyurethane foam filling body and the rubber sealing ring, so that the thermal pipeline has axial displacement performance, and has a certain waterproof performance while ensuring the displacement performance, so that the node has both waterproof performance and axial displacement capacity, and is a thermal pipeline through-wall node that can absorb axial thermal displacement. It solves the connection disadvantages of traditional rigid connection nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of the thermal pipeline.

[0020] Figure 2 This is the embedded structure diagram of the wall-penetrating steel pipe.

[0021] Figure 3 This is a diagram of the installation process of the thermal pipeline.

[0022] Figure 4 This is a diagram of the installation process.

[0023] Figure 5 This is the wall penetration node diagram for the thermal pipeline installation.

[0024] Figure 6 It is a three-dimensional diagram of the elastic support frame.

[0025] In the figure:

[0026] 10 wall-penetrating steel pipe, 11 retaining ring, 12 flange, 13 triangular rib plate, 14 water stop ring, 15 grouting pipe, 16 exhaust pipe,

[0027] 20 heat pipe, 21 core pipe, 22 insulation layer, 23 shell,

[0028] 30 elastic support frame, 31 retaining ring, 32 band, 33 rubber sealing ring,

[0029] 40 expansion water stop,

[0030] 50 flanges,

[0031] 60 fastening bolts,

[0032] 70 polyurethane foam filling body. DETAILED DESCRIPTION

[0033] A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement includes a through-wall steel pipe 10, a thermal pipeline 20, an elastic support frame 30, an expansion water stop strip 40, a flange 50, a fastening bolt 60 and a polyurethane foam filler 70. Figures 1 to 6 The innovation of the utility model is described in detail.

[0034] The through-wall steel pipe 10 is pre-buried in the wall 00 and is an embedded part. The two ends of the through-wall steel pipe extend to the two sides of the wall respectively, that is, the two ends are exposed. For the convenience of description, the exposed ends on both sides are marked as inner end and outer end, and Figure 2 Indicated by arrows, the direction indicated by arrows is the outer end. An inwardly contracted retaining ring 11 is provided at the outer end of the through-wall steel pipe 10. The retaining ring is a circular steel plate that is necked inward and fixed by welding. In order to improve the rigidity of the retaining ring and the steel pipe, a triangular rib plate 13 is provided on the outer side of the retaining ring to strengthen the local structure. The inner end of the through-wall steel pipe is provided with an outwardly turned flange 12, which has bolt holes for matching with the above-mentioned flange 50. The channel formed inside the through-wall steel pipe is also the installation channel for the thermal pipeline and the elastic support frame.

[0035] Furthermore, a water stop ring 14 is provided on the outer surface of the wall-penetrating steel pipe 10 . The water stop ring is pre-buried in the wall and has waterproof and water-stopping effects.

[0036] The thermal pipeline 20 is composed of a core pipe 21, a heat-insulating layer 22 and an outer shell 23, which will not be described in detail.

[0037] The elastic support frame 30 is a corrugated elastic tube structure as a whole, that is, it has axial expansion space and capacity. When an axial force is applied to the elastic support frame, the elastic support frame 30 generates axial expansion and contraction. There are retaining rings 31 at both ends of the elastic support frame. The retaining rings are circular and perpendicular to the axial direction of the through-wall steel pipe. There are three bands 32 between the two retaining rings. The cross section of each band is a V-shaped structure, and the inner surface of each band is abutted against the thermal pipe, and the outer surface is abutted against the through-wall steel pipe. That is, the elastic support frame temporarily supports the thermal pipe during the installation of the thermal pipe.

[0038] Furthermore, in each of the above-mentioned bands 32, a rubber sealing ring 33 is provided at the abutment point with the thermal pipe. The rubber sealing ring is clamped in the clamping groove of the elastic support frame and elastically cooperates with the surface of the thermal pipe, thereby having a waterproof effect.

[0039] Furthermore, the elastic support frame 30 is preferably a metal piece made of stainless steel.

[0040] Expansion water stop strips 40 are arranged on both sides of the elastic support frame, that is, the expansion water stop strips are filled.

[0041] A flange 50 is installed on the inner section of the through-wall steel pipe. The flange 50 is composed of a pressure ring, a flange ring, and a transition plate. The pressure ring is attached to and pressed against the inner expansion water stop strip 40, and the pressure ring and the flange ring are connected to form a whole through the transition plate. The flange ring is fastened to the flange on the through-wall steel pipe through a bolt assembly 60, and during the connection process, an axial thrust can be applied to the expansion water stop strip and the elastic support frame.

[0042] A grouting pipe 15 and an exhaust pipe 16 are provided on the above-mentioned wall-penetrating steel pipe 10, wherein the grouting pipe is connected to the low point of the wall-penetrating steel pipe, and the exhaust pipe is connected to the high point of the wall-penetrating steel pipe to form a grouting channel, and polyurethane foam material is injected into the internal cavity through a glue injection device to form a polyurethane foam filling body 70, which wraps the above-mentioned elastic support frame and is beneficial to the stability of the support.

[0043] The construction process of this node, refer to Figures 1 to 4 A series of views are described in detail.

[0044] First, embed the through-wall steel pipe in the wall, then fill the expansion water stop strip in the pipe near the retaining ring, then install the elastic support frame, adjust the position of the elastic support frame, and install the thermal pipe from the inside to the outside ( Figure 3The grouting pipe is inserted into the elastic support frame (in the direction of the arrow in the middle), and after being installed in place, the expansion water stop strip is filled on the inner side of the elastic support frame, and the flange is installed, and the flange is fastened by multiple sets of bolt assemblies to form a preliminary fixation. After the preliminary fixation, the polyurethane foam material is injected into the internal cavity through the glue injection equipment. After the exhaust pipe has continuous polyurethane foam material overflowing, the grouting pipe and the exhaust pipe are blocked, and the polyurethane foam filling body 70 is formed after the foam material hardens. The polyurethane foam filling body wraps the elastic support frame and is conducive to the stability of the support.

[0045] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements to the present invention by relevant technical personnel in the field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement, comprising a through-wall steel pipe (10), a thermal pipeline (20), an elastic support frame (30), an expansion water stop strip (40), a flange (50) and a polyurethane foam filling body (70), characterized in that: The through-the-wall steel pipe is pre-buried in the wall (00), and the thermal pipeline passes through the through-the-wall steel pipe. An expansion water stop strip (40), an elastic support frame (30), and an expansion water stop strip (40) are sequentially arranged in the annular space between the through-the-wall steel pipe and the thermal pipeline. The flange (50) fixes the expansion water stop strip (40), the elastic support frame (30), and the expansion water stop strip (40), and a polyurethane foam filling body (70) is provided in the annular space where the elastic support frame is located.

2. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 1, characterized in that: The elastic support frame (30) is a corrugated elastic tube structure as a whole.

3. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 2, characterized in that: The two ends of the elastic support frame are provided with retaining rings (31), the retaining rings are in the form of a circular ring and are perpendicular to the axial direction of the through-wall steel pipe. A plurality of bands (32) are provided between the two retaining rings, the cross section of the bands being a V-shaped structure, the inner surface of the bands being abutted against the thermal pipe, and the outer surface of the bands being abutted against the through-wall steel pipe.

4. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 3, characterized in that: A rubber sealing ring (33) is provided at the wave band (32) abutting against the thermal pipeline, and the rubber sealing ring is clamped in a clamping groove of the elastic support frame and elastically cooperates with the surface of the thermal pipeline.

5. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 4, characterized in that: The elastic support frame (30) is a metal piece made of stainless steel.

6. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 5, characterized in that: The through-the-wall steel pipe (10) is provided with a grouting pipe (15) and an exhaust pipe (16), wherein the grouting pipe is connected to a low point of the through-the-wall steel pipe, and the exhaust pipe is connected to a high point of the through-the-wall steel pipe.

7. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 1, characterized in that: The two ends of the through-wall steel pipe (10) are provided with a retaining ring (11) and a flange (12), wherein the flange is connected to the flange member by bolts, and the retaining ring and the flange member limit the expansion water stop strip at the two ends of the annular space.

8. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 7, characterized in that: A triangular rib plate (13) is arranged on the outer side of the retaining ring.

9. A thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 8, characterized in that: A water stop ring (14) is provided on the outer surface of the wall-penetrating steel pipe (10), and the water stop ring is pre-buried in the wall.

10. The thermal pipeline installation through-wall node capable of absorbing axial thermal displacement according to claim 1, characterized in that: The flange component is composed of a pressure ring, a flange ring and a transition plate.

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