Waterproof through-wall pipe fitting for heat supply

By designing waterproof through-wall pipe fittings and utilizing pre-embedded water-blocking rings and self-healing materials, the problem of leakage prevention during the construction of heating pipes penetrating walls was solved, achieving the effects of simplified construction, reduced costs, and improved waterproof performance.

CN224135347UActive Publication Date: 2026-04-17TIANJIN THERMOELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN THERMOELECTRIC CO LTD
Filing Date
2025-03-20
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing heating pipelines have problems with insufficient anti-leakage performance during wall penetration construction, strict construction process requirements that depend on technical expertise, short anti-leakage lifespan, and the need for regular maintenance.

Method used

The design incorporates waterproof through-wall fittings, including pre-embedded multi-ring water-blocking structures and self-healing waterproof materials. Combined with stainless steel and an environmentally friendly anti-corrosion coating, these components are connected via flanges to form multiple waterproof barriers. The self-healing materials automatically repair even minor cracks and adapt to changes in pipe temperature.

Benefits of technology

Simplify the construction process, reduce construction and maintenance costs, ensure long-term waterproof performance, reduce the risk of leakage, adapt to the high temperature and corrosiveness of the underground environment, and achieve efficient and reliable operation of the heating network.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of through-wall pipe fittings, and discloses a waterproof through-wall pipe fitting for heat supply, which solves the problems in the background technology, and comprises a pipeline, flange pieces are arranged on both sides of the pipeline, the flange pieces are used for being connected with a heat supply main pipeline, a plurality of circles of water retaining rings are arranged on the pipeline, and the flange pieces are connected with the water retaining rings. A threaded groove is formed in the middle of the pipeline, a threaded part is arranged on the water retaining ring, the threaded part is connected with the threaded groove in a meshed mode, and the water retaining ring is connected with the pipeline in a lockable mode. And meanwhile, the construction and maintenance cost is reduced.
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Description

Technical Field

[0001] This utility model belongs to the technical field of through-wall pipe fittings, specifically a waterproof through-wall pipe fitting for heating. Background Technology

[0002] At present, in the planning and design of heating pipeline networks, heat exchange stations are usually planned and designed as underground heat exchange stations to save above-ground area. This makes it an unavoidable construction process for pipelines to pass through walls. At the same time, in order to avoid groundwater corrosion of pipelines and leakage from the wall penetration, special construction protection processes must be carried out on the pipes passing through the walls.

[0003] The commonly used construction process involves treating carbon steel pipes with rust prevention, followed by waterproofing at the wall penetration points after installation. However, this method has certain drawbacks. First, it requires strict waterproofing techniques and is highly dependent on the technical skills of the construction workers. Second, the waterproofing effect has a short lifespan and requires regular repairs during operation. Therefore, we propose a waterproof wall penetration pipe fitting for heating systems. Utility Model Content

[0004] To address the problems raised in the background art, this utility model provides the following technical solution: a waterproof through-wall pipe fitting for heating, comprising a pipe, flanges on both sides of the pipe for connecting to a main heating pipe, multiple water-retaining rings on the pipe, a threaded groove in the middle of the pipe, and a threaded portion on the water-retaining ring, the threaded portion engaging with the threaded groove, and the water-retaining ring being lockably connected to the pipe.

[0005] Preferably, the multiple water-blocking rings are pre-embedded in the wall. By pre-embedding the water-blocking rings in the wall during the wall construction stage, it is ensured that the water-blocking rings are tightly integrated with the wall, reducing the difficulty of later construction.

[0006] Preferably, the gap between the water-retaining ring and the wall is filled with a self-healing waterproof material. The self-healing waterproof material is a microcapsule-type self-healing material or a polymer-based self-healing material, which is a material that can automatically repair itself when tiny cracks appear, ensuring long-term waterproof performance.

[0007] Preferably, the main body of the pipe is made of stainless steel, which has excellent corrosion resistance, high temperature resistance and strength, and is suitable for underground humid environments and high temperature conditions of heating pipelines.

[0008] Preferably, the outer surface of the pipe is coated with an environmentally friendly anti-corrosion coating, which is a graphene coating or a nano-coating, to further enhance the anti-corrosion performance of the pipe fitting and adapt to harsh underground environments.

[0009] Preferably, the outer surface of the pipe is provided with a visual identifier, which is a QR code or RFID tag. The visual identifier is used to record the installation information, maintenance records and operating parameters of the pipe fitting, improve the traceability of the pipe fitting, facilitate operation and maintenance management, realize digital management of information, and reduce the workload of manual recording and querying.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] During construction, the water-retaining rings are pre-embedded in the wall to ensure a tight fit. Later, during pipe installation, only flanges are needed to connect the through-wall fittings to the main heating pipe, simplifying the construction process. When the pipe passes through the wall, the multiple water-retaining rings form multiple waterproof barriers. Groundwater encountering the water-retaining rings during seepage is blocked and its pressure is dispersed, reducing the risk of leakage. If minor cracks appear between the water-retaining rings and the wall, the self-healing waterproofing material automatically repairs the cracks, restoring waterproofing performance. When the pipe expands or contracts due to temperature changes, the water-retaining rings can be finely adjusted via their threaded structure to prevent gaps between the rings and the wall caused by pipe deformation. Through multiple water-retaining rings and self-healing material, groundwater leakage is effectively prevented, and the pipe can withstand deformation caused by temperature changes, ensuring efficient and reliable operation of the fitting in the heating network while reducing construction and maintenance costs. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a head-up view of the overall structure of this utility model;

[0014] Figure 2 This is a side view of the installation structure of this utility model;

[0015] In the diagram: 1. Pipe; 2. Flange; 3. Water-retaining ring; 4. Threaded groove; 5. Wall; 6. Visual signage. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Depend on Figure 1-2As shown, this utility model includes a pipe 1, with flanges 2 on both sides of the pipe 1 for connecting to the main heating pipe. The pipe 1 is provided with multiple water-blocking rings 3, and a threaded groove 4 is provided in the middle of the pipe 1. The water-blocking rings 3 are provided with threads, which engage with the threaded groove 4. The water-blocking rings 3 are lockably connected to the pipe 1.

[0018] Multiple water-blocking rings 3 are pre-embedded in the wall 5. During the construction of the wall 5, the water-blocking rings 3 are pre-embedded in the wall 5 to ensure that the water-blocking rings 3 are tightly integrated with the wall 5, thereby reducing the difficulty of later construction.

[0019] The gap between the water-blocking ring 3 and the wall 5 is filled with a self-healing waterproof material. The self-healing waterproof material is a microcapsule-type self-healing material or a polymer-based self-healing material, which can automatically repair itself when tiny cracks appear, ensuring long-term waterproof performance.

[0020] Pipeline 1 is made of stainless steel, which has excellent corrosion resistance, high temperature resistance and strength, making it suitable for underground humid environments and high temperature conditions of heating pipelines.

[0021] The outer surface of pipe 1 is coated with an environmentally friendly anti-corrosion coating, which is a graphene coating or a nano coating, further enhancing the anti-corrosion performance of the pipe fitting and adapting to harsh underground environments.

[0022] The outer surface of pipe 1 is equipped with a visual identifier 6, which is a QR code or RFID tag. The visual identifier 6 is used to record the installation information, maintenance records and operating parameters of the pipe fitting, improve the traceability of the pipe fitting, facilitate operation and maintenance management, realize digital management of information, and reduce the workload of manual recording and querying.

[0023] Working Principle: During the building construction phase, the water-retaining ring 3 is pre-embedded in the wall 5, ensuring a tight fit between the water-retaining ring 3 and the wall 5. Later, during pipe installation, the through-wall fitting is simply connected to the main heating pipe via the flange 2, simplifying the construction process. When the pipe passes through the wall, the multiple water-retaining rings 3 tightly fit against the wall 5, forming multiple waterproof barriers. When groundwater encounters the water-retaining rings 3 during infiltration, it is blocked and the water pressure is dispersed, reducing the risk of leakage. If a small crack appears between the water-retaining ring 3 and the wall 5, the self-healing waterproofing material will automatically repair the crack and restore waterproofing performance. When the pipe 1 expands and contracts due to temperature changes, the water-retaining ring 3 can be finely adjusted through its threaded structure to prevent gaps between the water-retaining ring 3 and the wall 5 caused by pipe deformation. Through the multiple water-retaining rings 3 and the self-healing material, groundwater leakage is effectively prevented, and the pipe deformation caused by temperature changes is addressed, ensuring efficient and reliable operation of the fitting in the heating network while reducing construction and maintenance costs.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof through-the-wall pipe for heating, comprising a pipe (1), characterised in that: Flanges (2) are provided on both sides of the pipe (1). The flanges (2) are used to connect to the main heating pipe. Multiple water-blocking rings (3) are provided on the pipe (1). A threaded groove (4) is provided in the middle of the pipe (1). A threaded part is provided on the water-blocking ring (3). The threaded part is engaged with the threaded groove (4). The water-blocking ring (3) is lockably connected to the pipe (1).

2. The waterproof through-the-wall pipe for heating according to claim 1, characterized in that: The multiple water-blocking rings (3) are pre-embedded in the wall (5).

3. A water-proof through-wall pipe for heating according to claim 2, wherein: The gap between the water-blocking ring (3) and the wall (5) is filled with a self-healing waterproof material, which is a microcapsule-type self-healing material or a polymer-based self-healing material.

4. The water-proof through-wall pipe for heating according to claim 3, characterized in that: The main body of the pipe (1) is made of stainless steel.

5. A water-proof through-wall pipe for heating according to claim 4, wherein: The outer surface of the pipe (1) is coated with an environmentally friendly anti-corrosion coating, which is a graphene coating or a nano coating.

6. A water-proof through-wall pipe for heating according to claim 5, wherein: The outer surface of the pipe (1) is provided with a visual mark (6), which is a QR code or RFID tag. The visual mark (6) is used to record the installation information, maintenance records and operating parameters of the pipe fitting.