Small-bore break pipe connection structure
Patent Information
- Application Number
- CN202521895587.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-03
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-09-03
AI Technical Summary
[0004]为了克服现有技术的不足，本实用新型提供一种小口径断点管道连接结构，能够解决现有技术中热胀冷缩易松动，长期使用易脱开以及水流阻力增大，结构复杂易导致二次渗漏的问题，从而保证管道断点修复的可靠性、耐用性以及施工便捷性，且对水流影响小
[0013]本实用新型的有益效果是：本实用新型通过第一外套管与第二外套管螺纹连接的结构设计，其强度远高于塑料的粘合强度，且不受PVC材料热塑性变形的影响，能有效抵抗管道因热胀冷缩产生的应力，防止连接处脱开，且在连接件两端额外设置固定件能够将第一断点管道和第二断点管道箍紧在连接件内，以防止其轴向移动或松动，确保了连接结构的长期稳定性；通过连接件内部直通的设计，不会改变水流方向和产生涡流，水流阻力显著降低，对管道系统的水力性能影响很小；通过密封件卡接于第一外套管与第二外套管的内侧，极大降低了二次渗漏的风险；且此连接结构的安装过程主要涉及螺纹紧固以及固定件安装，通常只需要扳手等常见工具，避免了热熔对接所需的加热设备和操作技巧，施工更为简便快捷；因此，本实用新型能够解决现有技术中热胀冷缩易松动，长期使用易脱开以及水流阻力增大，结构复杂易导致二次渗漏的问题，从而保证管道断点修复的可靠性、耐用性以及施工便捷性，且对水流影响小。
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Figure CN224872074U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline repair technology, and more specifically, to a small-diameter pipe break connection structure. Background Technology
[0002] Pipe breakage or insufficient length is a common engineering problem during the installation and maintenance of small-diameter PVC pipes. Currently, the industry generally uses two repair methods to address this: heat-deformation flared joint and bridging repair. The heat-deformation flared joint method involves heating the pipe end to soften it and expand it into a flared shape, then inserting a pipe section of the same specification to form a socket connection. This method is quick and requires no special tools, but its repair effectiveness is affected by the thermoplasticity of the material, and the connection is prone to loosening under temperature changes, posing a risk of detachment over long-term use. The bridging repair method involves adding elbows to both ends of the break and then connecting them with short pipes to form a "bridge" transition structure. While this method avoids the difficulties of directly connecting the broken section, it increases local water flow resistance. Furthermore, the increased number of connection points and the more complex structure actually increase the possibility of secondary leakage.
[0003] To address these issues, this invention provides a small-diameter pipe connection structure that solves the problems of easy loosening due to thermal expansion and contraction, easy separation after long-term use, increased water flow resistance, and complex structure leading to secondary leakage in the prior art. This ensures the reliability, durability, and ease of construction of pipe break repairs, while minimizing the impact on water flow. Utility Model Content
[0004] To overcome the shortcomings of existing technologies, this utility model provides a small-diameter pipe connection structure that can solve the problems of easy loosening due to thermal expansion and contraction, easy separation after long-term use, increased water flow resistance, and complex structure that can easily lead to secondary leakage in existing technologies. This ensures the reliability, durability, and ease of construction of pipe break repair, while having little impact on water flow.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a small-diameter broken pipe connection structure, the improvement of which is that the small-diameter broken pipe connection structure includes a first broken pipe, a second broken pipe, a connector, a seal, and a fixing member; one end of the connector is sleeved on the first broken pipe, and the other end is sleeved on the second broken pipe; the seal is sleeved on the first broken pipe and the second broken pipe, and the seal is engaged in the gap between the connector and the first broken pipe and the gap between the connector and the second broken pipe; the fixing member is fixedly installed on the first broken pipe and the second broken pipe, and the fixing member is close to both ends of the connector;
[0006] The connector includes a first outer tube and a second outer tube; one end of the first outer tube is provided with a first insertion hole, and the inner side of the other end is provided with a threaded hole; one end of the second outer tube is provided with a second insertion hole, and the outer side of the other end is provided with a threaded connector; the first outer tube is sleeved on the end of the first break point pipe through the first insertion hole; the threaded hole is threadedly connected to the threaded connector; the second outer tube is sleeved on the end of the second break point pipe through the second insertion hole.
[0007] In the above structure, the sealing element includes a first rubber ring and a second rubber ring; the first rubber ring is sleeved on the first break point pipe and is engaged in the gap between the first outer sleeve and the first break point pipe; the second rubber ring is sleeved on the second break point pipe and is engaged in the gap between the second outer sleeve and the second break point pipe.
[0008] In the above structure, the fastener includes a first stainless steel pipe clamp and a second stainless steel pipe clamp. The first stainless steel pipe clamp is fixedly installed on the first break point pipe, and the first stainless steel pipe clamp is close to the end of the first outer sleeve that is away from the second outer sleeve. The second stainless steel pipe clamp is fixedly installed on the second break point pipe, and the second stainless steel pipe clamp is close to the end of the second outer sleeve that is away from the first outer sleeve.
[0009] In the above structure, both the first stainless steel pipe clamp and the second stainless steel pipe clamp include a steel ring with an opening, a fixing screw, and a fixing nut. The steel ring is fitted onto the first or second break point pipe, and the two ends of the opening of the steel ring are welded with hoops. One end of the fixing screw passes through the hoops and is threadedly connected to the fixing nut.
[0010] In the above structure, the diameter of the first socket is adapted to the outer diameter of the first breakpoint pipe; the diameter of the second socket is adapted to the outer diameter of the second breakpoint pipe.
[0011] In the above structure, the outer diameter of the first stainless steel pipe clamp is larger than the diameter of the first socket; the outer diameter of the second stainless steel pipe clamp is larger than the diameter of the second socket.
[0012] In the above structure, the diameter of the threaded hole is larger than the outer diameter of the first breakpoint pipe and the second breakpoint pipe.
[0013] The beneficial effects of this utility model are as follows: The structural design of the threaded connection between the first and second outer sleeves provides strength far exceeding that of plastic adhesives, and it is unaffected by the thermoplastic deformation of PVC materials. This effectively resists stress caused by thermal expansion and contraction of the pipe, preventing the connection from detaching. Furthermore, the additional fixing components at both ends of the connector tightly clamp the first and second breakpoint pipes within the connector, preventing axial movement or loosening and ensuring the long-term stability of the connection structure. The straight-through design inside the connector does not alter the water flow direction or generate eddies, significantly reducing water flow resistance and minimizing the impact on the piping system. The impact on hydraulic performance is minimal; the sealing element is snapped into the inner side of the first and second outer sleeves, greatly reducing the risk of secondary leakage; and the installation process of this connection structure mainly involves thread tightening and fastener installation, usually requiring only common tools such as wrenches, avoiding the heating equipment and operating skills required for hot-melt butt welding, making construction simpler and faster; therefore, this utility model can solve the problems of easy loosening due to thermal expansion and contraction, easy separation after long-term use, increased water flow resistance, and complex structure that easily leads to secondary leakage in the prior art, thereby ensuring the reliability, durability, and ease of construction of pipeline break repair, with minimal impact on water flow. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a small-diameter pipe breakpoint connection structure according to the present invention. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of a small-diameter pipe break-point connection structure according to the present invention. Figure 2 . Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.
[0018] Reference Figure 1 and Figure 2As shown, this utility model discloses a small-diameter broken pipe connection structure, which includes a first broken pipe 2, a second broken pipe 3, a connector 1, a seal, and a fixing member; one end of the connector 1 is sleeved on the first broken pipe 2, and the other end is sleeved on the second broken pipe 3; the seal is sleeved on the first broken pipe 2 and the second broken pipe 3, and the seal is engaged in the gap between the connector 1 and the first broken pipe 2 and the gap between the connector 1 and the second broken pipe 3; the fixing member is fixedly installed on the first broken pipe 2 and the second broken pipe 3, and the fixing member is close to both ends of the connector 1;
[0019] It should be noted that, in this embodiment, the first break point pipe 2 and the second break point pipe 3 are tightly connected by the connector 1 to repair the pipe break point; the sealing member is snapped into the gap between the connector 1 and the first break point pipe 2 and between the connector 1 and the second break point pipe 3 to effectively prevent water leakage or seepage and reduce the risk of secondary leakage; the fixing member is located near both ends of the connector 1 to reinforce the connection between the first break point pipe 2 and the second break point pipe 3 and the connector 1 to prevent the pipe from moving axially or loosening.
[0020] For details, please refer to... Figure 1 and Figure 2 As shown, the connector 1 includes a first outer tube 101 and a second outer tube 102; one end of the first outer tube 101 is provided with a first insertion hole, and the inner side of the other end is provided with a threaded hole; one end of the second outer tube 102 is provided with a second insertion hole, and the outer side of the other end is provided with a threaded connector; the first outer tube 101 is sleeved on the end of the first breakpoint pipe 2 through the first insertion hole; the threaded hole is threadedly connected to the threaded connector; the second outer tube 102 is sleeved on the end of the second breakpoint pipe 3 through the second insertion hole.
[0021] It should be noted that, in this embodiment, the connector 1 is composed of a first outer sleeve 101 and a second outer sleeve 102. The first outer sleeve 101 and the second outer sleeve 102 are connected by a threaded structure, which has a strength far exceeding that of plastic adhesive and is not affected by the thermoplastic deformation of PVC material. It can effectively resist the stress caused by the thermal expansion and contraction of the pipe and prevent the connection from coming apart. Furthermore, the design of the first and second insertion holes allows for plug-and-play connection between the first outer sleeve 101 and the first pipe break point, and between the second outer sleeve 102 and the second pipe break point, resulting in a straight-through design inside the connector 1. This design does not change the direction of water flow or generate eddies, significantly reducing water flow resistance and having minimal impact on the hydraulic performance of the pipeline system. Furthermore, the diameter of the threaded hole is larger than the outer diameter of the first breakpoint pipe 2 and the second breakpoint pipe 3. This design further reduces water flow resistance and minimizes the impact on the hydraulic performance of the pipeline system. The diameter of the first insertion hole is matched to the outer diameter of the first breakpoint pipe 2, and the diameter of the second insertion hole is matched to the outer diameter of the second breakpoint pipe 3. This design ensures a good fit of the connector 1 at the pipe end, preventing loosening or looseness.
[0022] As a preferred embodiment, refer to Figure 1 and Figure 2 As shown, the sealing element includes a first rubber ring 6 and a second rubber ring 7; the first rubber ring 6 is sleeved on the first break point pipe 2 and is engaged in the gap between the first outer sleeve 101 and the first break point pipe 2; the second rubber ring 7 is sleeved on the second break point pipe 3 and is engaged in the gap between the second outer sleeve 102 and the second break point pipe 3.
[0023] It should be noted that, in this embodiment, the elastic properties of the first rubber ring 6 and the second rubber ring 7 enable them to be tightly pressed together at the connection points of the first breakpoint pipe 2 and the first outer sleeve 101 and the second breakpoint pipe 3 and the second outer sleeve 102, respectively, to form an effective sealing layer, thereby effectively preventing leakage of water or other media and ensuring the sealing of the connection; and the first rubber ring 6 and the second rubber ring 7 can withstand the minor deformation that may occur during the pipe connection process, avoiding water leakage and thus effectively reducing the risk of secondary leakage.
[0024] Continue to refer to Figure 1 and Figure 2As shown, the fasteners include a first stainless steel pipe clamp 4 and a second stainless steel pipe clamp 5. The first stainless steel pipe clamp 4 is fixedly installed on the first break point pipe 2, and the first stainless steel pipe clamp 4 is closer to the end of the first outer sleeve 101 and farther away from the second outer sleeve 102. The second stainless steel pipe clamp 5 is fixedly installed on the second break point pipe 3, and the second stainless steel pipe clamp 5 is closer to the end of the second outer sleeve 102 and farther away from the first outer sleeve 101. Specifically, both the first stainless steel pipe clamp 4 and the second stainless steel pipe clamp 5 include a steel ring with an opening, a fixing screw, and a fixing nut. The steel ring is sleeved on the first break point pipe 2 or the second break point pipe 3, and the two ends of the opening of the steel ring are welded with hoops. One end of the fixing screw passes through the hoops and is threadedly connected to the fixing nut.
[0025] It should be noted that, in this embodiment, the first stainless steel pipe clamp 4 and the second stainless steel pipe clamp 5 are respectively fitted onto the first breakpoint pipe 2 and the second breakpoint pipe 3 using open steel rings, and are fixedly installed at the clamp using fixing bolts and nuts. This forces the diameter of the steel ring to decrease, thereby applying a uniform and large radial pressure to the first breakpoint pipe 2 and the second breakpoint pipe 3, achieving their fixation. Furthermore, since the outer diameter of the first stainless steel pipe clamp 4 is larger than the diameter of the first insertion hole, and the outer diameter of the second stainless steel pipe clamp 5 is larger than the diameter of the second insertion hole, when the first breakpoint pipe 2 and the second breakpoint pipe 3 are subjected to tensile force attempting to dislodge from the connector 1... When the pipe detaches, the first break point pipe 2 and the second break point pipe 3 will move together with the first stainless steel pipe clamp 4 and the second stainless steel pipe clamp 5 that are already tightly clamped on it. However, the first stainless steel pipe clamp 4 and the second stainless steel pipe clamp 5 will be blocked by the end face of the connector 1. Since the friction between the first stainless steel pipe clamp 4 and the first break point pipe 2 and between the second stainless steel pipe clamp 5 and the second break point pipe 3 through the clamping function is much greater than the tension on the first break point pipe 2 and the second break point pipe 3, the first break point pipe 2 and the second break point pipe 3 cannot continue to move, thus effectively preventing the first break point pipe 2 and the second break point pipe 3 from detaching from the connector 1.
[0026] It should also be noted that, in this embodiment, the installation process of the small-diameter pipe connection structure mainly involves thread tightening and fastener installation, which usually only requires common tools such as wrenches, avoiding the heating equipment and operating skills required for hot-melt butt welding, making the construction simpler and faster.
[0027] Compared with the prior art, the advantages of this utility model are: it can solve the problems of easy loosening due to thermal expansion and contraction, easy separation after long-term use, increased water flow resistance, and complex structure that easily leads to secondary leakage in the prior art, thereby ensuring the reliability, durability and construction convenience of pipeline break point repair, and having little impact on water flow.
[0028] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A small-diameter, discontinuous pipe connection structure, characterized in that, The connection structure of the small-diameter break pipe includes a first break pipe, a second break pipe, a connector, a seal, and a fixing member; one end of the connector is sleeved on the first break pipe, and the other end is sleeved on the second break pipe; the seal is sleeved on the first and second break pipes, and the seal is engaged in the gap between the connector and the first and second break pipes; the fixing member is fixedly installed on the first and second break pipes, and the fixing member is close to both ends of the connector; The connector includes a first outer tube and a second outer tube; one end of the first outer tube is provided with a first insertion hole, and the inner side of the other end is provided with a threaded hole; one end of the second outer tube is provided with a second insertion hole, and the outer side of the other end is provided with a threaded connector; the first outer tube is sleeved on the end of the first break point pipe through the first insertion hole; the threaded hole is threadedly connected to the threaded connector; the second outer tube is sleeved on the end of the second break point pipe through the second insertion hole.
2. The small-diameter, discontinuous pipe connection structure according to claim 1, characterized in that, The sealing element includes a first rubber ring and a second rubber ring; the first rubber ring is sleeved on the first break point pipe and is engaged in the gap between the first outer sleeve and the first break point pipe; the second rubber ring is sleeved on the second break point pipe and is engaged in the gap between the second outer sleeve and the second break point pipe.
3. The small-diameter discontinuity pipe connection structure according to claim 1, characterized in that, The fasteners include a first stainless steel pipe clamp and a second stainless steel pipe clamp. The first stainless steel pipe clamp is fixedly installed on the first break point pipe, and the first stainless steel pipe clamp is close to the end of the first outer sleeve that is away from the second outer sleeve. The second stainless steel pipe clamp is fixedly installed on the second break point pipe, and the second stainless steel pipe clamp is close to the end of the second outer sleeve that is away from the first outer sleeve.
4. The small-diameter discontinuity pipe connection structure according to claim 3, characterized in that, Both the first and second stainless steel pipe clamps include a steel ring with an opening, a fixing screw, and a fixing nut. The steel ring is fitted onto the first or second break point pipe, and hoops are welded to the outer sides of both ends of the opening of the steel ring. One end of the fixing screw passes through the hoops and is threadedly connected to the fixing nut.
5. The small-diameter discontinuity pipe connection structure according to claim 1, characterized in that, The diameter of the first socket is adapted to the outer diameter of the first break point pipe; the diameter of the second socket is adapted to the outer diameter of the second break point pipe.
6. The small-diameter discontinuity pipe connection structure according to claim 3, characterized in that, The outer diameter of the first stainless steel pipe clamp is larger than the diameter of the first socket; the outer diameter of the second stainless steel pipe clamp is larger than the diameter of the second socket.
7. The small-diameter discontinuity pipe connection structure according to claim 1, characterized in that, The diameter of the threaded hole is larger than the outer diameter of the pipe at the first break point and the pipe at the second break point.